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US20140146195A1 - Data processing apparatus for transmitting/receiving compression-related indication information via camera interface and related data processing method - Google Patents

Data processing apparatus for transmitting/receiving compression-related indication information via camera interface and related data processing method Download PDF

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Publication number
US20140146195A1
US20140146195A1 US13/965,210 US201313965210A US2014146195A1 US 20140146195 A1 US20140146195 A1 US 20140146195A1 US 201313965210 A US201313965210 A US 201313965210A US 2014146195 A1 US2014146195 A1 US 2014146195A1
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data processing
interface
indication information
bitstream
camera
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US13/965,210
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Chi-cheng Ju
Tsu-Ming Liu
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MediaTek Inc
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MediaTek Inc
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Priority to US13/965,210 priority Critical patent/US20140146195A1/en
Assigned to MEDIATEK INC. reassignment MEDIATEK INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JU, CHI-CHENG, LIU, TSU-MING
Priority to CN201310594147.3A priority patent/CN103841318A/en
Publication of US20140146195A1 publication Critical patent/US20140146195A1/en
Abandoned legal-status Critical Current

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    • H04N5/23241—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
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    • G06F1/32—Means for saving power
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    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/179—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a scene or a shot
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    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/184—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
    • H—ELECTRICITY
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    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/65—Control of camera operation in relation to power supply
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    • G09G2340/04—Changes in size, position or resolution of an image
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Definitions

  • the disclosed embodiments of the present invention relate to transmitting and receiving multimedia data over a camera interface, and more particularly, to a data processing apparatus for transmitting/receiving compression-related indication information via a camera interface and related data processing method.
  • a camera interface is disposed between a first chip and a second chip to transmit multimedia data from the first chip to the second chip for further processing.
  • the first chip may include a camera module
  • the second chip may include an image signal processor (ISP).
  • the multimedia data may include image data (i.e., a single still image) or video data (i.e., a video sequence composed of images).
  • image data i.e., a single still image
  • video data i.e., a video sequence composed of images.
  • the camera module and the ISP are both located at a portable device (e.g., a smartphone) powered by a battery device, the battery life is shortened due to the increased power consumption of the camera interface.
  • a portable device e.g., a smartphone
  • the battery life is shortened due to the increased power consumption of the camera interface.
  • a data processing apparatus for transmitting/receiving compression-related indication information via a camera interface and related data processing method are proposed.
  • an exemplary data processing apparatus has a compressor and an output interface.
  • the compressor is arranged for generating a compressed multimedia data by compressing a multimedia data according to a compression algorithm.
  • the output interface is arranged for recording indication information in an output bitstream and outputting the output bitstream via a camera interface, wherein the output bitstream is derived from the compressed multimedia data, and the indication information is set in response to the compression algorithm employed by the compressor.
  • an exemplary data processing apparatus has a de-compressor and an input interface.
  • the de-compressor is arranged for de-compressing a compressed multimedia data derived from an input bitstream.
  • the input interface is arranged for receiving the input bitstream via a camera interface, parsing indication information included in the input bitstream, and configuring the de-compressor to employ a de-compression algorithm as indicated by the indication information.
  • an exemplary data processing method includes at least the following steps: generating a compressed multimedia data by compressing a multimedia data according to a compression algorithm; and recording indication information in an output bitstream and outputting the output bitstream via a camera interface, wherein the output bitstream is derived from the compressed multimedia data, and the indication information is set in response to the compression algorithm.
  • an exemplary data processing method includes at least the following steps: de-compressing a compressed multimedia data derived from an input bitstream; and receiving the input bitstream via a camera interface, parsing indication information included in the input bitstream, and configuring the de-compressing step to employ a de-compression algorithm as indicated by the indication information.
  • FIG. 1 is a block diagram illustrating a data processing system according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating a data structure of the output bitstream generated from the camera module to the ISP according to an embodiment of the present invention.
  • FIG. 3 is a diagram illustrating an example of information handshaking between the camera module and the ISP.
  • FIG. 4 is a flowchart illustrating a control and data flow of the data processing system shown in FIG. 1 when interface compression is enabled.
  • FIG. 5 is a block diagram illustrating a data processing system according to another embodiment of the present invention.
  • FIG. 6 is a diagram illustrating a data structure of the output bitstream generated from the camera module to the ISP according to another embodiment of the present invention.
  • FIG. 7 is a flowchart illustrating a control and data flow of the data processing system shown in FIG. 5 when interface compression is enabled.
  • the present invention proposes applying data compression to a multimedia data and then transmitting a compressed multimedia data over a camera interface.
  • the data size/data rate of the compressed multimedia data is smaller than that of the original un-compressed multimedia data, the power consumption of the camera interface is reduced correspondingly.
  • the de-compression algorithm employed by a receiving end which receives and de-compresses a compressed multimedia data is required to be compliant with the compression algorithm employed by a transmitting end which generates and transmits the compressed multimedia data; otherwise, the receiving end fails to correctly de-compress the compressed multimedia data. Therefore, the present invention further proposes transmitting/receiving the compression-related indication information via the camera interface, such that the de-compression algorithm of the receiving end is properly configured based on the compression-related indication information. Further details will be described as below.
  • FIG. 1 is a block diagram illustrating a data processing system according to an embodiment of the present invention.
  • the data processing system 100 includes a plurality of data processing apparatuses such as a camera module 102 and an image signal processor (ISP) 104 .
  • the camera module 102 and the ISP 104 may be different chips, and the camera module 102 communicates with the ISP 104 via a camera interface 103 .
  • the camera interface 103 may be a camera serial interface (CSI) standardized by a Mobile Industry Processor Interface (MIPI).
  • CSI camera serial interface
  • MIPI Mobile Industry Processor Interface
  • the camera module 102 is coupled to the camera interface 103 , and supports un-compressed data transmission and compressed data transmission.
  • the camera module 102 When the camera module 102 is used to transmit un-compressed data to the ISP 104 , the camera module 102 generates the un-compressed multimedia data D 1 according to an input multimedia data derived from capturing the incident light, and transmits the un-compressed multimedia data D 1 over the camera interface 103 .
  • the camera module 102 is used to transmit compressed data to the ISP 104 , the camera module 102 generates a compressed multimedia data D 1 ′ according to the input multimedia data derived from capturing the incident light, and transmits the compressed multimedia data D 1 ′ over the camera interface 103 .
  • the input multimedia data obtained by capturing the incident light and used for generating the un-compressed multimedia data D 1 /compressed multimedia data D 1 ′ may be an image data or a video data.
  • the camera module 102 includes a camera controller 112 , an output interface 114 and a processing circuit 116 .
  • the processing circuit 116 includes circuit elements required for processing the input multimedia data to generate the un-compressed data D 1 or the compressed data D 1 ′.
  • the processing circuit 116 has a compressor 117 and other circuitry 118 , where the other circuitry 118 may have a lens module, a camera sensor, a camera buffer, multiplexer(s), etc.
  • the lens module guides the incident light to the camera sensor, and the camera sensor obtains the input multimedia data correspondingly.
  • the input multimedia data obtained by the camera sensor may be a single captured image or a video sequence composed of a plurality of captured images.
  • the input multimedia data obtained by the camera sensor may be single view data for 2D display or multiple view data for 3D display.
  • the camera buffer is arranged to buffer the input multimedia data obtained by the camera sensor.
  • the compressor 117 performs data compression.
  • the multiplexer receives the un-compressed multimedia data D 1 and the compressed multimedia data D 1 ′, and selectively outputs the un-compressed multimedia data D 1 or the compressed multimedia data D 1 ′ according to the operation mode of the camera module 102 .
  • the camera controller 112 controls the operation of the camera module 102 .
  • the multiplexer When the camera module 102 is operated under a compression mode, the multiplexer outputs the compressed multimedia data D 1 ′; and when the camera module 102 is operated under a non-compression mode, the multiplexer outputs the un-compressed multimedia data D 1 .
  • the present invention focuses on the handshaking mechanism between the camera module 102 and the ISP 104 , further description of the other circuit 118 is omitted here for brevity.
  • the output interface 114 is arranged for packing/packetizing the un-compressed multimedia data D 1 /compressed multimedia data D 1 ′ into an output bitstream according to the transmission protocol of the camera interface 103 , and transmits the output bitstream to the ISP 104 via the camera interface 103 .
  • the compressor 117 When the compression mode of the camera module 102 is enabled, the compressor 117 further sets indication information INFO in response to the compression algorithm employed. Besides, the output interface 114 further records the indication information INFO in the output bitstream. In this way, when the output bitstream is transmitted from the camera module 102 to the ISP 104 , the compression-related indication information (e.g., the indication information INFO) is also transmitted via the camera interface 103 .
  • the ISP 104 it communicates with the camera module 102 via the camera interface 103 .
  • the ISP 104 is coupled to the camera interface 103 , and supports un-compressed data reception and compressed data reception.
  • the camera module 102 transmits the un-compressed data D 1 to the ISP 104
  • the ISP 104 is operated under a non-decompression mode to receive an un-compressed data D 2 from the camera interface 103 , generate a processed multimedia data according to the un-compressed data D 2 , and send the processed multimedia data to one or multiple processors, such as a display processor 106 _ 1 , a video processor 106 _ 2 , and/or a graphic processor 106 _ 3 , for further processing.
  • the ISP 104 When the camera module 102 transmits the compressed data D 1 ′ to the ISP 104 , the ISP 104 is operated under a de-compression mode to receive a compressed multimedia data D 2 ′ from the camera interface 103 , generate a processed multimedia data according to the compressed data D 2 ′, and send the processed multimedia data to one or multiple processors, such as the display processor 106 _ 1 , the video processor 106 _ 2 , and/or the graphic processor 106 _ 3 , for further processing.
  • processors such as the display processor 106 _ 1 , the video processor 106 _ 2 , and/or the graphic processor 106 _ 3 , for further processing.
  • the un-compressed data D 1 transmitted under the non-compression mode should be identical to the un-compressed data D 2 received under the non-decompression mode, and the compressed data D 1 ′ transmitted under the compression mode should be identical to the compressed data D 2 ′ received under the de-compression mode.
  • the ISP 104 includes an ISP controller 122 , an input interface 124 and a processing circuit 126 .
  • the processing circuit 126 may include circuit elements required for generating the processed multimedia data according to an internal transmission mode (e.g., an on-the-fly mode or an off-line mode).
  • the other circuitry 128 may have a write direct memory access (DMA) controller, a read DMA controller, an image processor, multiplexers, etc.
  • the de-compressor 127 generates the de-compressed multimedia data by de-compressing the compressed multimedia data D 2 ′ according to a de-compression algorithm, where the compressed multimedia data D 2 ′ is derived from an input bitstream received from the camera interface 103 .
  • the write DMA controller is arranged for storing a multimedia data into an external image buffer of the ISP 104 , where the multimedia data may be an un-compressed multimedia data, a compressed multimedia data or a de-compressed multimedia data.
  • the read write DMA controller is arranged for reading a buffered multimedia data from the external image buffer of the ISP 104 .
  • the image processor is arranged to support several image processing operations, including resizing/scaling, rotation, quality enhancement, etc., where the processed multimedia data is generated from the image processor.
  • the multiplexers control interconnections of the de-compressor 127 , the image processor, the write DMA controller, and the read DMA controller. As the present invention focuses on the handshaking mechanism between the camera module 102 and the ISP 104 , further description of the other circuitry 128 is omitted here for brevity.
  • the input interface 124 is arranged for receiving the input bitstream from the camera interface 103 , and un-packing/un-packetizing the input bitstream into un-compressed multimedia data D 2 /compressed multimedia data D 2 ′ according to the transmission protocol of the camera interface 103 .
  • the input interface 124 is further arranged for parsing the indication information INFO included in the input bitstream, and configuring the de-compressor 127 to employ a de-compression algorithm as indicated by the indication information INFO.
  • information handshaking is realized through the camera interface 103 . Therefore, with the help of the indication information INFO supplied from the camera module 102 , the de-compressor 127 of the ISP 104 is properly configured to employ an adequate de-compression algorithm needed for de-compressing the compressed data D 2 ′ correctly.
  • the output interface 114 records the indication information INFO by setting a command set in a payload portion of the output bitstream transmitted over the camera interface 103
  • the input interface 124 obtains the indication information INFO by parsing a command set in a payload portion of the input bitstream received from the camera interface 103 .
  • FIG. 2 is a diagram illustrating a data structure of the output bitstream generated from the camera module 102 to the ISP 104 according to an embodiment of the present invention.
  • the information handshaking between the camera module 102 and the ISP 104 may be realized by defining a set of commands in the transmitted payload.
  • these commands can be specified in vendor-specific commands based on MIPI camera command set (CCS) specification, where each command in a command set may be an 8-bit code, and the command set can be used to communicate between the camera module 102 and the ISP 104 about the compression capability and compression/de-compression algorithms they support.
  • CCS MIPI camera command set
  • FIG. 3 is a diagram illustrating an example of information handshaking between the camera module 102 and the ISP 104 .
  • the compressor 117 supports four compression algorithms
  • the de-compressor 127 supports four de-compression algorithms compliant with the compression algorithms, respectively.
  • the different compression algorithms may handle different compression ratios, different compression unit sizes, different color formats (e.g.
  • the indication information INFO is adjusted when at least one of a compression ratio, a compression unit size, a color format, and a bit depth of a compression algorithm employed is changed.
  • the camera module 102 may check a de-compression capability of the ISP 104 by sending a request to the ISP 104 through the camera interface 103 , and the ISP 104 may inform the camera module 102 of its de-compression capability by sending a response to the camera module 102 through the camera interface 103 .
  • the camera module 102 can detect whether the ISP 104 has the ability of performing data de-compression, and can further detect what kinds of de-compression algorithms the ISP 104 supports if the ISP 104 is equipped with the de-compression capability.
  • the compressor 117 at the camera module 102 is configured to use the compression algorithm #4, and the indication information INFO is set correspondingly.
  • the indication information INFO is carried by the command set transmitted from the camera module 102 to the ISP 104 via the camera interface 103 .
  • the ISP 104 receives the indication information INFO through the camera interface 103 , and configures the de-compressor 127 to employ the de-compression algorithm #4 as indicated by the indication information INFO.
  • FIG. 4 is a flowchart illustrating a control and data flow of the data processing system 100 shown in FIG. 1 when interface compression is enabled. Provided that the result is substantially the same, the steps are not required to be executed in the exact order shown in FIG. 4
  • the exemplary control and data flow may be briefly summarized by following steps.
  • Step 400 Start.
  • Step 402 Configure the compressor 117 to employ a compression algorithm.
  • Step 404 Set the indication information INFO in response to the compression algorithm employed by the compressor 117 .
  • Step 406 Record the indication information INFO in an output bitstream.
  • the indication information INFO is recorded by setting a command set in a payload portion of the output bitstream.
  • Step 408 Transmit the output bitstream over the camera interface 103 .
  • Step 410 Receive an input bitstream from the camera interface 103 .
  • Step 412 Parse the indication information INFO included in the input bitstream.
  • the indication information INFO is obtained by parsing a command set in a payload portion of the input bitstream.
  • Step 414 Configure the de-compressor 127 to employ a de-compression algorithm as indicated by the indication information INFO.
  • Step 416 End.
  • steps 402 - 408 are performed by the camera module 102
  • steps 410 - 414 are performed by the ISP 104 .
  • steps 402 - 408 are performed by the camera module 102
  • steps 410 - 414 are performed by the ISP 104 .
  • FIG. 5 is a block diagram illustrating a data processing system according to another embodiment of the present invention.
  • the data processing system 500 includes a channel detector 502 , a channel controller 504 , and a plurality of data processing apparatuses such as the aforementioned camera module 102 and ISP 104 shown in FIG. 1 .
  • the output stream generated from the camera module 102 may be composed of interleaved data streams with different data formats.
  • the camera module 102 may have multiple camera sensors and support different compression algorithms.
  • a first data stream included in the output stream is generated based on a first compression algorithm and an input multimedia data obtained by a first camera sensor using a first color format (e.g., Bayer); and a second data stream included in the output stream is generated based on a second compression algorithm and an input multimedia data obtained by a second camera sensor using a second color format (e.g., RGBW).
  • a first color format e.g., Bayer
  • a second data stream included in the output stream is generated based on a second compression algorithm and an input multimedia data obtained by a second camera sensor using a second color format (e.g., RGBW).
  • the camera module 102 assigns different channel identification (ID) numbers to the first stream and the second stream.
  • ID channel identification
  • the virtual channel is to provide separate channels (e.g., 506 _ 1 and 506 _ 2 ) for different data flows that are interleaved in the data stream transmitted over the camera interface 103 .
  • the receiving end will monitor the channel ID numbers and de-multiplex the interleaved data streams (e.g., the aforementioned first data stream and second data stream) to their appropriate channels 506 _ 1 , 506 _ 2 .
  • the channel controller 504 is arranged to direct data streams to individual channels 506 _ 1 , 506 _ 2 under the control of the channel detector 502 .
  • the output interface 114 of the camera module 102 is further arranged for recording a channel ID number ID CH in a header portion of the output bitstream to indicate which one of the channels 506 _ 1 , 506 _ 2 should be connected for receiving the output bitstream.
  • FIG. 6 is a diagram illustrating a data structure of the output bitstream generated from the camera module 102 to the ISP 104 according to another embodiment of the present invention.
  • the information handshaking between the camera module 102 and the ISP 104 is realized by defining a set of commands in the transmitted payload.
  • the channel detector 502 is implemented for receiving an input bitstream from the camera interface 103 , and identifying the channel ID number ID CH from the header portion of the input bitstream.
  • the channel controller 504 dispatches the input bitstream, including the header portion and the payload portion shown in FIG. 6 , to a selected channel with the channel ID number ID CH .
  • the information handshaking as illustrated in FIG. 3 for configuring the compression and de-compression algorithms is also performed between the camera module 102 and the ISP 104 . Further description is omitted here for brevity.
  • FIG. 7 is a flowchart illustrating a control and data flow of the data processing system 500 shown in FIG. 5 when interface compression is enabled. Provided that the result is substantially the same, the steps are not required to be executed in the exact order shown in FIG. 7 .
  • the exemplary control and data flow may be briefly summarized by following steps.
  • Step 700 Start.
  • Step 702 Configure the compressor 117 to employ a compression algorithm.
  • Step 704 Set the indication information INFO in response to the compression algorithm employed by the compressor 117 .
  • Step 706 Set the channel ID number ID CH indicative of which channel should be connected for data transmission.
  • Step 708 Record the channel ID number ID CH and the indication information INFO in an output bitstream.
  • the indication information INFO is recorded by setting a command set in a payload portion of the output bitstream
  • the channel ID number ID CH is recorded by setting a header portion of the output bitstream.
  • Step 710 Transmit the output bitstream over the camera interface 103 .
  • Step 712 Get the channel ID number ID CH from an input bitstream.
  • the channel ID number ID CH is obtained by parsing a header portion of the input bitstream.
  • Step 714 Dispatch the input bitstream to a selected channel with the channel ID number ID CH .
  • Step 716 Receive the input bitstream dispatched from the channel controller 504 .
  • Step 718 Parse the indication information INFO included in the input bitstream.
  • the indication information INFO is obtained by parsing a command set in a payload portion of the input bitstream.
  • Step 720 Configure the de-compressor 127 to employ a de-compression algorithm as indicated by the indication information INFO.
  • Step 722 End.
  • steps 702 - 710 are performed by the camera module 102
  • step 712 is performed by the channel detector 502
  • step 714 is performed by the channel controller 504
  • steps 716 - 720 are performed by the ISP 104 .
  • steps 702 - 710 are performed by the camera module 102
  • step 712 is performed by the channel detector 502
  • step 714 is performed by the channel controller 504
  • steps 716 - 720 are performed by the ISP 104 .

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Abstract

A data processing apparatus has a compressor and an output interface. The compressor generates a compressed multimedia data by compressing a multimedia data according to a compression algorithm. The output interface records indication information in an output bitstream, and outputs the output bitstream via a camera interface, wherein the output bitstream is derived from the compressed multimedia data, and the indication information is set in response to the compression algorithm employed by the compressor. Another data processing apparatus has a de-compressor and an input interface. The de-compressor de-compresses a compressed multimedia data derived from an input bitstream. The input interface receives the input bitstream via a camera interface, parses indication information included in the input bitstream, and configures the de-compressor to employ a de-compression algorithm as indicated by the indication information.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS
  • This application claims the benefit of U.S. provisional application No. 61/729,426, filed on Nov. 23, 2012 and incorporated herein by reference.
    • BACKGROUND
  • The disclosed embodiments of the present invention relate to transmitting and receiving multimedia data over a camera interface, and more particularly, to a data processing apparatus for transmitting/receiving compression-related indication information via a camera interface and related data processing method.
  • A camera interface is disposed between a first chip and a second chip to transmit multimedia data from the first chip to the second chip for further processing. For example, the first chip may include a camera module, and the second chip may include an image signal processor (ISP). The multimedia data may include image data (i.e., a single still image) or video data (i.e., a video sequence composed of images). When a camera sensor with a higher resolution is employed in the camera module, the multimedia data transmitted over the camera interface would have a larger data size/data rate, which increases the power consumption of the camera interface inevitably. If the camera module and the ISP are both located at a portable device (e.g., a smartphone) powered by a battery device, the battery life is shortened due to the increased power consumption of the camera interface. Thus, there is a need for an innovative design which can effectively reduce the power consumption of the camera interface.
    • SUMMARY
  • In accordance with exemplary embodiments of the present invention, a data processing apparatus for transmitting/receiving compression-related indication information via a camera interface and related data processing method are proposed.
  • According to a first aspect of the present invention, an exemplary data processing apparatus is disclosed. The exemplary data processing apparatus has a compressor and an output interface. The compressor is arranged for generating a compressed multimedia data by compressing a multimedia data according to a compression algorithm. The output interface is arranged for recording indication information in an output bitstream and outputting the output bitstream via a camera interface, wherein the output bitstream is derived from the compressed multimedia data, and the indication information is set in response to the compression algorithm employed by the compressor.
  • According to a second aspect of the present invention, an exemplary data processing apparatus is disclosed. The exemplary data processing apparatus has a de-compressor and an input interface. The de-compressor is arranged for de-compressing a compressed multimedia data derived from an input bitstream. The input interface is arranged for receiving the input bitstream via a camera interface, parsing indication information included in the input bitstream, and configuring the de-compressor to employ a de-compression algorithm as indicated by the indication information.
  • According to a third aspect of the present invention, an exemplary data processing method is disclosed. The exemplary data processing method includes at least the following steps: generating a compressed multimedia data by compressing a multimedia data according to a compression algorithm; and recording indication information in an output bitstream and outputting the output bitstream via a camera interface, wherein the output bitstream is derived from the compressed multimedia data, and the indication information is set in response to the compression algorithm.
  • According to a fourth aspect of the present invention, an exemplary data processing method is disclosed. The exemplary data processing method includes at least the following steps: de-compressing a compressed multimedia data derived from an input bitstream; and receiving the input bitstream via a camera interface, parsing indication information included in the input bitstream, and configuring the de-compressing step to employ a de-compression algorithm as indicated by the indication information.
  • These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a block diagram illustrating a data processing system according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating a data structure of the output bitstream generated from the camera module to the ISP according to an embodiment of the present invention.
  • FIG. 3 is a diagram illustrating an example of information handshaking between the camera module and the ISP.
  • FIG. 4 is a flowchart illustrating a control and data flow of the data processing system shown in FIG. 1 when interface compression is enabled.
  • FIG. 5 is a block diagram illustrating a data processing system according to another embodiment of the present invention.
  • FIG. 6 is a diagram illustrating a data structure of the output bitstream generated from the camera module to the ISP according to another embodiment of the present invention.
  • FIG. 7 is a flowchart illustrating a control and data flow of the data processing system shown in FIG. 5 when interface compression is enabled.
    •  DETAILED DESCRIPTION
  • Certain terms are used throughout the description and following claims to refer to particular components. As one skilled in the art will appreciate, manufacturers may refer to a component by different names. This document does not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms “include” and “comprise” are used in an open-ended fashion, and thus should be interpreted to mean “include, but not limited to . . . ”. Also, the term “couple” is intended to mean either an indirect or direct electrical connection. Accordingly, if one device is coupled to another device, that connection may be through a direct electrical connection, or through an indirect electrical connection via other devices and connections.
  • The present invention proposes applying data compression to a multimedia data and then transmitting a compressed multimedia data over a camera interface. As the data size/data rate of the compressed multimedia data is smaller than that of the original un-compressed multimedia data, the power consumption of the camera interface is reduced correspondingly. Besides, the de-compression algorithm employed by a receiving end which receives and de-compresses a compressed multimedia data is required to be compliant with the compression algorithm employed by a transmitting end which generates and transmits the compressed multimedia data; otherwise, the receiving end fails to correctly de-compress the compressed multimedia data. Therefore, the present invention further proposes transmitting/receiving the compression-related indication information via the camera interface, such that the de-compression algorithm of the receiving end is properly configured based on the compression-related indication information. Further details will be described as below.
  • FIG. 1 is a block diagram illustrating a data processing system according to an embodiment of the present invention. The data processing system 100 includes a plurality of data processing apparatuses such as a camera module 102 and an image signal processor (ISP) 104. The camera module 102 and the ISP 104 may be different chips, and the camera module 102 communicates with the ISP 104 via a camera interface 103. In this embodiment, the camera interface 103 may be a camera serial interface (CSI) standardized by a Mobile Industry Processor Interface (MIPI).
  • The camera module 102 is coupled to the camera interface 103, and supports un-compressed data transmission and compressed data transmission. When the camera module 102 is used to transmit un-compressed data to the ISP 104, the camera module 102 generates the un-compressed multimedia data D1 according to an input multimedia data derived from capturing the incident light, and transmits the un-compressed multimedia data D1 over the camera interface 103. When the camera module 102 is used to transmit compressed data to the ISP 104, the camera module 102 generates a compressed multimedia data D1′ according to the input multimedia data derived from capturing the incident light, and transmits the compressed multimedia data D1′ over the camera interface 103. By way of example, but not limitation, the input multimedia data obtained by capturing the incident light and used for generating the un-compressed multimedia data D1/compressed multimedia data D1′ may be an image data or a video data.
  • As shown in FIG. 1, the camera module 102 includes a camera controller 112, an output interface 114 and a processing circuit 116. The processing circuit 116 includes circuit elements required for processing the input multimedia data to generate the un-compressed data D1 or the compressed data D1′. For example, the processing circuit 116 has a compressor 117 and other circuitry 118, where the other circuitry 118 may have a lens module, a camera sensor, a camera buffer, multiplexer(s), etc. The lens module guides the incident light to the camera sensor, and the camera sensor obtains the input multimedia data correspondingly. The input multimedia data obtained by the camera sensor may be a single captured image or a video sequence composed of a plurality of captured images. Besides, the input multimedia data obtained by the camera sensor may be single view data for 2D display or multiple view data for 3D display. The camera buffer is arranged to buffer the input multimedia data obtained by the camera sensor. The compressor 117 performs data compression. The multiplexer receives the un-compressed multimedia data D1 and the compressed multimedia data D1′, and selectively outputs the un-compressed multimedia data D1 or the compressed multimedia data D1′ according to the operation mode of the camera module 102. For example, the camera controller 112 controls the operation of the camera module 102. When the camera module 102 is operated under a compression mode, the multiplexer outputs the compressed multimedia data D1′; and when the camera module 102 is operated under a non-compression mode, the multiplexer outputs the un-compressed multimedia data D1. As the present invention focuses on the handshaking mechanism between the camera module 102 and the ISP 104, further description of the other circuit 118 is omitted here for brevity.
  • The output interface 114 is arranged for packing/packetizing the un-compressed multimedia data D1/compressed multimedia data D1′ into an output bitstream according to the transmission protocol of the camera interface 103, and transmits the output bitstream to the ISP 104 via the camera interface 103. When the compression mode of the camera module 102 is enabled, the compressor 117 further sets indication information INFO in response to the compression algorithm employed. Besides, the output interface 114 further records the indication information INFO in the output bitstream. In this way, when the output bitstream is transmitted from the camera module 102 to the ISP 104, the compression-related indication information (e.g., the indication information INFO) is also transmitted via the camera interface 103.
  • Regarding the ISP 104, it communicates with the camera module 102 via the camera interface 103. In this embodiment, the ISP 104 is coupled to the camera interface 103, and supports un-compressed data reception and compressed data reception. When the camera module 102 transmits the un-compressed data D1 to the ISP 104, the ISP 104 is operated under a non-decompression mode to receive an un-compressed data D2 from the camera interface 103, generate a processed multimedia data according to the un-compressed data D2, and send the processed multimedia data to one or multiple processors, such as a display processor 106_1, a video processor 106_2, and/or a graphic processor 106_3, for further processing. When the camera module 102 transmits the compressed data D1′ to the ISP 104, the ISP 104 is operated under a de-compression mode to receive a compressed multimedia data D2′ from the camera interface 103, generate a processed multimedia data according to the compressed data D2′, and send the processed multimedia data to one or multiple processors, such as the display processor 106_1, the video processor 106_2, and/or the graphic processor 106_3, for further processing. If there is no error introduced during the data transmission, the un-compressed data D1 transmitted under the non-compression mode should be identical to the un-compressed data D2 received under the non-decompression mode, and the compressed data D1′ transmitted under the compression mode should be identical to the compressed data D2′ received under the de-compression mode.
  • As shown in FIG. 1, the ISP 104 includes an ISP controller 122, an input interface 124 and a processing circuit 126. The processing circuit 126 may include circuit elements required for generating the processed multimedia data according to an internal transmission mode (e.g., an on-the-fly mode or an off-line mode). For example, the other circuitry 128 may have a write direct memory access (DMA) controller, a read DMA controller, an image processor, multiplexers, etc. The de-compressor 127 generates the de-compressed multimedia data by de-compressing the compressed multimedia data D2′ according to a de-compression algorithm, where the compressed multimedia data D2′ is derived from an input bitstream received from the camera interface 103. The write DMA controller is arranged for storing a multimedia data into an external image buffer of the ISP 104, where the multimedia data may be an un-compressed multimedia data, a compressed multimedia data or a de-compressed multimedia data. The read write DMA controller is arranged for reading a buffered multimedia data from the external image buffer of the ISP 104. The image processor is arranged to support several image processing operations, including resizing/scaling, rotation, quality enhancement, etc., where the processed multimedia data is generated from the image processor. The multiplexers control interconnections of the de-compressor 127, the image processor, the write DMA controller, and the read DMA controller. As the present invention focuses on the handshaking mechanism between the camera module 102 and the ISP 104, further description of the other circuitry 128 is omitted here for brevity.
  • The input interface 124 is arranged for receiving the input bitstream from the camera interface 103, and un-packing/un-packetizing the input bitstream into un-compressed multimedia data D2/compressed multimedia data D2′ according to the transmission protocol of the camera interface 103. When the de-compression mode of the ISP 104 is enabled, the input interface 124 is further arranged for parsing the indication information INFO included in the input bitstream, and configuring the de-compressor 127 to employ a de-compression algorithm as indicated by the indication information INFO. In addition to the compressed data transmission between the camera module 102 and the ISP 104, information handshaking is realized through the camera interface 103. Therefore, with the help of the indication information INFO supplied from the camera module 102, the de-compressor 127 of the ISP 104 is properly configured to employ an adequate de-compression algorithm needed for de-compressing the compressed data D2′ correctly.
  • In one exemplary design, the output interface 114 records the indication information INFO by setting a command set in a payload portion of the output bitstream transmitted over the camera interface 103, and the input interface 124 obtains the indication information INFO by parsing a command set in a payload portion of the input bitstream received from the camera interface 103. Please refer to FIG. 2, which is a diagram illustrating a data structure of the output bitstream generated from the camera module 102 to the ISP 104 according to an embodiment of the present invention. The information handshaking between the camera module 102 and the ISP 104 may be realized by defining a set of commands in the transmitted payload. For example, these commands can be specified in vendor-specific commands based on MIPI camera command set (CCS) specification, where each command in a command set may be an 8-bit code, and the command set can be used to communicate between the camera module 102 and the ISP 104 about the compression capability and compression/de-compression algorithms they support. Please refer to FIG. 3, which is a diagram illustrating an example of information handshaking between the camera module 102 and the ISP 104. In this example, the compressor 117 supports four compression algorithms, and the de-compressor 127 supports four de-compression algorithms compliant with the compression algorithms, respectively. The different compression algorithms may handle different compression ratios, different compression unit sizes, different color formats (e.g. Bayer or RGBW), and/or different bit depths (8-bit, 10-bit or 12-bit). Hence, the indication information INFO is adjusted when at least one of a compression ratio, a compression unit size, a color format, and a bit depth of a compression algorithm employed is changed. The camera module 102 may check a de-compression capability of the ISP 104 by sending a request to the ISP 104 through the camera interface 103, and the ISP 104 may inform the camera module 102 of its de-compression capability by sending a response to the camera module 102 through the camera interface 103. In this way, the camera module 102 can detect whether the ISP 104 has the ability of performing data de-compression, and can further detect what kinds of de-compression algorithms the ISP 104 supports if the ISP 104 is equipped with the de-compression capability. In this example, the compressor 117 at the camera module 102 is configured to use the compression algorithm #4, and the indication information INFO is set correspondingly. The indication information INFO is carried by the command set transmitted from the camera module 102 to the ISP 104 via the camera interface 103. Hence, the ISP 104 receives the indication information INFO through the camera interface 103, and configures the de-compressor 127 to employ the de-compression algorithm #4 as indicated by the indication information INFO.
  • FIG. 4 is a flowchart illustrating a control and data flow of the data processing system 100 shown in FIG. 1 when interface compression is enabled. Provided that the result is substantially the same, the steps are not required to be executed in the exact order shown in FIG. 4 The exemplary control and data flow may be briefly summarized by following steps.
  • Step 400: Start.
  • Step 402: Configure the compressor 117 to employ a compression algorithm.
  • Step 404: Set the indication information INFO in response to the compression algorithm employed by the compressor 117.
  • Step 406: Record the indication information INFO in an output bitstream. For example, the indication information INFO is recorded by setting a command set in a payload portion of the output bitstream.
  • Step 408: Transmit the output bitstream over the camera interface 103.
  • Step 410: Receive an input bitstream from the camera interface 103.
  • Step 412: Parse the indication information INFO included in the input bitstream. For example, the indication information INFO is obtained by parsing a command set in a payload portion of the input bitstream.
  • Step 414: Configure the de-compressor 127 to employ a de-compression algorithm as indicated by the indication information INFO.
  • Step 416: End.
  • It should be noted that steps 402-408 are performed by the camera module 102, and steps 410-414 are performed by the ISP 104. As a person skilled in the art can readily understand details of each step shown in FIG. 4 after reading above paragraphs, further description is omitted here for brevity.
  • It should be noted that the same handshaking mechanism may be applied to a data processing system equipped with virtual channel capability. Please refer to FIG. 5 in conjunction with FIG. 1. FIG. 5 is a block diagram illustrating a data processing system according to another embodiment of the present invention. The data processing system 500 includes a channel detector 502, a channel controller 504, and a plurality of data processing apparatuses such as the aforementioned camera module 102 and ISP 104 shown in FIG. 1. The output stream generated from the camera module 102 may be composed of interleaved data streams with different data formats. For example, the camera module 102 may have multiple camera sensors and support different compression algorithms. Hence, a first data stream included in the output stream is generated based on a first compression algorithm and an input multimedia data obtained by a first camera sensor using a first color format (e.g., Bayer); and a second data stream included in the output stream is generated based on a second compression algorithm and an input multimedia data obtained by a second camera sensor using a second color format (e.g., RGBW). To make a receiving end able to distinguish between the first data stream and the second stream interleaved in the output stream, the camera module 102 assigns different channel identification (ID) numbers to the first stream and the second stream.
  • The virtual channel is to provide separate channels (e.g., 506_1 and 506_2) for different data flows that are interleaved in the data stream transmitted over the camera interface 103. Thus, the receiving end will monitor the channel ID numbers and de-multiplex the interleaved data streams (e.g., the aforementioned first data stream and second data stream) to their appropriate channels 506_1, 506_2. More specifically, the channel controller 504 is arranged to direct data streams to individual channels 506_1, 506_2 under the control of the channel detector 502. In this embodiment, the output interface 114 of the camera module 102 is further arranged for recording a channel ID number IDCH in a header portion of the output bitstream to indicate which one of the channels 506_1, 506_2 should be connected for receiving the output bitstream. FIG. 6 is a diagram illustrating a data structure of the output bitstream generated from the camera module 102 to the ISP 104 according to another embodiment of the present invention. As mentioned above, the information handshaking between the camera module 102 and the ISP 104 is realized by defining a set of commands in the transmitted payload. In this embodiment, the virtual channel capability of the data processing system 500 is realized by defining the channel ID number in the transmitted header. For example, the channel 506_1 is connected for data transmission/reception when IDCH=#1, and the channel 506_2 is connected for data transmission/reception when IDCH=#2.
  • The channel detector 502 is implemented for receiving an input bitstream from the camera interface 103, and identifying the channel ID number IDCH from the header portion of the input bitstream. Next, the channel controller 504 dispatches the input bitstream, including the header portion and the payload portion shown in FIG. 6, to a selected channel with the channel ID number IDCH. The information handshaking as illustrated in FIG. 3 for configuring the compression and de-compression algorithms is also performed between the camera module 102 and the ISP 104. Further description is omitted here for brevity.
  • FIG. 7 is a flowchart illustrating a control and data flow of the data processing system 500 shown in FIG. 5 when interface compression is enabled. Provided that the result is substantially the same, the steps are not required to be executed in the exact order shown in FIG. 7. The exemplary control and data flow may be briefly summarized by following steps.
  • Step 700: Start.
  • Step 702: Configure the compressor 117 to employ a compression algorithm.
  • Step 704: Set the indication information INFO in response to the compression algorithm employed by the compressor 117.
  • Step 706: Set the channel ID number IDCH indicative of which channel should be connected for data transmission.
  • Step 708: Record the channel ID number IDCH and the indication information INFO in an output bitstream. For example, the indication information INFO is recorded by setting a command set in a payload portion of the output bitstream, and the channel ID number IDCH is recorded by setting a header portion of the output bitstream.
  • Step 710: Transmit the output bitstream over the camera interface 103.
  • Step 712: Get the channel ID number IDCH from an input bitstream. For example, the channel ID number IDCH is obtained by parsing a header portion of the input bitstream.
  • Step 714: Dispatch the input bitstream to a selected channel with the channel ID number IDCH.
  • Step 716: Receive the input bitstream dispatched from the channel controller 504.
  • Step 718: Parse the indication information INFO included in the input bitstream. For example, the indication information INFO is obtained by parsing a command set in a payload portion of the input bitstream.
  • Step 720: Configure the de-compressor 127 to employ a de-compression algorithm as indicated by the indication information INFO.
  • Step 722: End.
  • It should be noted that steps 702-710 are performed by the camera module 102, step 712 is performed by the channel detector 502, step 714 is performed by the channel controller 504, and steps 716-720 are performed by the ISP 104. As a person skilled in the art can readily understand details of each step shown in FIG. 7 after reading above paragraphs, further description is omitted here for brevity.
  • Those skilled in the art will readily observe that numerous modifications and alterations of the device and method may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.

Claims (18)

What is claimed is:
1. A data processing apparatus comprising:
a compressor, arranged for generating a compressed multimedia data by compressing a multimedia data according to a compression algorithm; and
an output interface, arranged for recording indication information in an output bitstream and outputting the output bitstream via a camera interface, wherein the output bitstream is derived from the compressed multimedia data, and the indication information is set in response to the compression algorithm employed by the compressor.
2. The data processing apparatus of claim 1, wherein the camera interface is a camera serial interface (CSI) standardized by a Mobile Industry Processor Interface (MIPI).
3. The data processing apparatus of claim 1, wherein the output interface records the indication information by setting a command set in a payload portion of the output bitstream.
4. The data processing apparatus of claim 3, wherein a first end of the camera interface is coupled to the output interface of the data processing apparatus, and a second end of the camera interface is allowed to be coupled to another data processing apparatus via any of a plurality of channels; the output interface further records a channel identification (ID) number in a header portion of the output bitstream to indicate which one of the channels is connected for receiving the output bitstream.
5. A data processing apparatus comprising:
a de-compressor, arranged for de-compressing a compressed multimedia data derived from an input bitstream; and
an input interface, arranged for receiving the input bitstream via a camera interface, parsing indication information included in the input bitstream, and configuring the de-compressor to employ a de-compression algorithm as indicated by the indication information.
6. The data processing apparatus of claim 5, wherein the camera interface is a camera serial interface (CSI) standardized by a Mobile Industry Processor Interface (MIPI).
7. The data processing apparatus of claim 5, wherein the input interface obtains the indication information by parsing a command set in a payload portion of the input bitstream.
8. The data processing apparatus of claim 7, wherein one end of the camera interface is allowed to be coupled to the data processing apparatus via any of a plurality of channels; and a specific channel selected from the channels according to a channel identification (ID) number recorded in a header portion of the input bitstream is connected for receiving the input bitstream.
9. A data processing method comprising:
generating a compressed multimedia data by compressing a multimedia data according to a compression algorithm; and
recording indication information in an output bitstream and outputting the output bitstream via a camera interface, wherein the output bitstream is derived from the compressed multimedia data, and the indication information is set in response to the compression algorithm.
10. The data processing method of claim 9, wherein the camera interface is a camera serial interface (CSI) standardized by a Mobile Industry Processor Interface (MIPI).
11. The data processing method of claim 9, wherein the step of recording the indication information in the output bitstream comprises:
recording the indication information by setting a command set in a payload portion of the output bitstream.
12. The data processing method of claim 11, wherein a first end of the camera interface is coupled to the output bitstream, and a second end of the camera interface is allowed to be coupled to a data processing apparatus via any of a plurality of channels; and the data processing method further comprises:
recording a channel identification (ID) number in a header portion of the output bitstream to indicate which one of the channels is connected for receiving the output bitstream.
13. The data processing method of claim 9, wherein the indication information is adjusted when at least one of a compression ratio, a compression unit size, a color format, and a bit depth of the compression algorithm is changed.
14. A data processing method comprising:
de-compressing a compressed multimedia data derived from an input bitstream; and
receiving the input bitstream via a camera interface, parsing indication information included in the input bitstream, and configuring the de-compressing step to employ a de-compression algorithm as indicated by the indication information.
15. The data processing method of claim 14, wherein the camera interface is a camera serial interface (CSI) standardized by a Mobile Industry Processor Interface (MIPI).
16. The data processing method of claim 14, wherein the step of parsing the indication information included in the input bitstream comprises:
obtaining the indication information by parsing a command set in a payload portion of the input bitstream.
17. The data processing method of claim 16, wherein one end of the camera interface is allowed to be coupled to any of a plurality of channels; and the data processing method further comprises:
receiving the input bitstream from the camera interface via a specific channel selected from the channels according to a channel identification (ID) number recorded in a header portion of the input bitstream.
18. The data processing method of claim 14, wherein the indication information is adjusted when at least one of a compression ratio, a compression unit size, a color format, and a bit depth of the compression algorithm is changed.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9491495B2 (en) * 2015-01-16 2016-11-08 Analog Devices Global Method and apparatus for providing input to a camera serial interface transmitter
US10331564B2 (en) * 2017-11-29 2019-06-25 Intel Corporation Technologies for secure I/O with MIPI camera device
US20220337747A1 (en) * 2018-12-07 2022-10-20 Samsung Electronics Co., Ltd. Apparatus and method for operating multiple cameras for digital photography

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104011775A (en) * 2011-12-26 2014-08-27 英特尔公司 Techniques for managing three-dimensional graphics display modes
US9568985B2 (en) * 2012-11-23 2017-02-14 Mediatek Inc. Data processing apparatus with adaptive compression algorithm selection based on visibility of compression artifacts for data communication over camera interface and related data processing method
CN103369142B (en) * 2013-07-09 2015-02-04 广东欧珀移动通信有限公司 Method and system for avoiding call-up malfunction
JP2015053644A (en) * 2013-09-09 2015-03-19 オリンパス株式会社 Imaging device
US10080018B2 (en) * 2014-03-25 2018-09-18 Owtware Holdings Limited, BVI Video content classification
CN106462202A (en) * 2014-06-12 2017-02-22 联发科技股份有限公司 Thermal management method and electronic system with thermal management mechanism
CN105404331A (en) * 2014-09-10 2016-03-16 联想(北京)有限公司 Control method and device, and electronic equipment
US9536045B1 (en) 2015-03-16 2017-01-03 D.R. Systems, Inc. Dynamic digital image compression based on digital image characteristics
CN104717433A (en) * 2015-03-27 2015-06-17 电子科技大学 Distributed transmission device for video stream signal processing system
JP6355595B2 (en) * 2015-06-02 2018-07-11 キヤノン株式会社 IMAGING ELEMENT, IMAGING DEVICE, IMAGING ELEMENT CONTROL METHOD, PROGRAM, AND STORAGE MEDIUM
US20170094190A1 (en) * 2015-09-30 2017-03-30 Microsoft Technology Licensing, Llc Processing display of digital camera readout with minimal latency
US10827039B1 (en) * 2015-10-19 2020-11-03 Quest Software Inc. Systems and methods for dynamic compression of time-series data
JP6743427B2 (en) * 2016-03-08 2020-08-19 株式会社リコー Information processing apparatus, imaging system, and data transfer method
KR102510708B1 (en) * 2016-07-25 2023-03-16 삼성전자주식회사 Electronic device and method for diplaying image
KR102778992B1 (en) 2016-09-16 2025-03-07 소니 세미컨덕터 솔루션즈 가부시키가이샤 Image pickup device and electronic apparatus
WO2018139947A1 (en) * 2017-01-24 2018-08-02 Huawei Technologies Co., Ltd. Apparatus and method for data compression
US10229322B2 (en) 2017-04-06 2019-03-12 Ants Technology (Hk) Limited Apparatus, methods and computer products for video analytics
US10453221B2 (en) * 2017-04-10 2019-10-22 Intel Corporation Region based processing
CN107241600B (en) * 2017-04-20 2018-07-03 中国科学技术大学 A kind of static background inner frame coding method and device
CN107176100A (en) * 2017-05-12 2017-09-19 深圳市京弘全智能科技股份有限公司 Car-mounted terminal and its distance-finding method with distance measurement function
KR102204596B1 (en) * 2017-06-02 2021-01-19 삼성전자주식회사 Processor, image processing device comprising the same, and method for image processing
KR102434417B1 (en) 2017-07-20 2022-08-22 삼성전자주식회사 Method for transmitting image data and data associated with control of image capture based on sizes of image data and data associated with control of image capture and electronic device for supporting the same
TWI640957B (en) 2017-07-26 2018-11-11 聚晶半導體股份有限公司 Image processing wafer and image processing system
KR102301940B1 (en) 2017-12-01 2021-09-14 삼성전자주식회사 Method and apparatus for image fusion
CN108205320A (en) * 2017-12-18 2018-06-26 深圳市奇虎智能科技有限公司 Map data processing method and device
TWI653886B (en) 2017-12-21 2019-03-11 鴻海精密工業股份有限公司 Picture transmision method and photographic device
US10739838B2 (en) * 2017-12-28 2020-08-11 Omnivision Technologies, Inc. Quality-driven dynamic frequency scaling for energy optimization of smart camera systems
KR102499033B1 (en) 2018-01-31 2023-02-13 삼성전자주식회사 Image sensor and electronic device including the image sensor
KR102499286B1 (en) 2018-02-23 2023-02-14 삼성전자주식회사 Electronic device for compressing image based on compression loss data associated with compression of a plurality of blocks into which image has been segmented and method for operating thefeof
US11432187B2 (en) * 2018-04-04 2022-08-30 Charter Communications Operating, Llc Dynamic use of header compression in a wireless network
GB2575463B (en) * 2018-07-10 2022-12-14 Displaylink Uk Ltd Compression of display data
CN110971943B (en) * 2018-09-30 2021-10-15 北京微播视界科技有限公司 Video code rate adjusting method, device, terminal and storage medium
CN111756963B (en) * 2019-03-29 2022-01-14 华为技术有限公司 Image shooting module and electronic terminal
KR20210009255A (en) 2019-07-16 2021-01-26 삼성전자주식회사 Image sensor and image processing system comprising thereof
CN112243090B (en) 2019-07-16 2024-10-18 三星电子株式会社 Image sensor and image processing system
TWM600051U (en) * 2020-04-15 2020-08-11 聯詠科技股份有限公司 Image device and image processing integrated circuit thereof
WO2023008605A1 (en) * 2021-07-28 2023-02-02 엘지전자 주식회사 Image display device
CN113918298B (en) * 2021-10-12 2024-05-14 北京字节跳动网络技术有限公司 Multimedia data processing method, system and equipment
CN114020385A (en) * 2021-11-01 2022-02-08 联想(北京)有限公司 A data processing method, device and system
US12375101B1 (en) * 2024-03-31 2025-07-29 AtomBeam Technologies Inc. Distributed system and method for adaptive neural network-based data compression

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030165200A1 (en) * 2001-08-30 2003-09-04 Pugel Michael Anthony Method and apparatus for simultaneously retrieving portions of a data stream from different channels
US20080025412A1 (en) * 2006-07-28 2008-01-31 Mediatek Inc. Method and apparatus for processing video stream

Family Cites Families (97)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5502485A (en) 1993-06-23 1996-03-26 Nikon Corporation Camera which compresses digital image data in correspondence with the focus control or the stop value of the camera
CA2163556C (en) 1994-04-22 2006-07-11 Tetsuji Kawashima System and method for transmitting compressed data or pre-compressed data based on a preset compression ratio
US5553160A (en) * 1994-09-01 1996-09-03 Intel Corporation Method and apparatus for dynamically selecting an image compression process based on image size and color resolution
US5778191A (en) 1995-10-26 1998-07-07 Motorola, Inc. Method and device for error control of a macroblock-based video compression technique
US6031929A (en) * 1996-07-18 2000-02-29 University Of Pittsburgh Image facsimile with real time image segmentation
WO1998009436A1 (en) * 1996-08-30 1998-03-05 Sony Corporation Device, method, and medium for recording still picture and animation
JPH1093918A (en) 1996-09-17 1998-04-10 Nikon Corp Image recording device
US6201834B1 (en) 1996-12-20 2001-03-13 Intel Corporation Method and apparatus for packet loss recovery with standard-based packet video
US7110025B1 (en) 1997-05-28 2006-09-19 Eastman Kodak Company Digital camera for capturing a sequence of full and reduced resolution digital images and storing motion and still digital image data
US6507672B1 (en) 1997-09-10 2003-01-14 Lsi Logic Corporation Video encoder for digital video displays
US6614934B1 (en) * 1998-03-06 2003-09-02 Divio, Inc. Method and apparatus for concatenating bits of odd-length words
JP2000232649A (en) * 1998-12-10 2000-08-22 Fujitsu Ltd MPEG video decoder and MPEG video decoding method
US6704310B1 (en) 1999-06-30 2004-03-09 Logitech Europe, S.A. Header encoding method and apparatus for packet-based bus
US6995794B2 (en) 1999-06-30 2006-02-07 Logitech Europe S.A. Video camera with major functions implemented in host software
US6956971B1 (en) 1999-07-20 2005-10-18 Lg Electronics Inc. Terminal and method for transporting still picture
US6300973B1 (en) 2000-01-13 2001-10-09 Meir Feder Method and system for multimedia communication control
JP3849461B2 (en) 2001-06-07 2006-11-22 ソニー株式会社 Imaging apparatus and imaging method
US7088398B1 (en) * 2001-12-24 2006-08-08 Silicon Image, Inc. Method and apparatus for regenerating a clock for auxiliary data transmitted over a serial link with video data
KR20030097310A (en) * 2002-06-20 2003-12-31 삼성전자주식회사 method and system for adjusting image size of display apparatus and recording media for computer program therefor
JP2004040548A (en) * 2002-07-04 2004-02-05 Minolta Co Ltd Image pickup device
US7069394B2 (en) 2002-12-05 2006-06-27 International Business Machines Corporation Dynamic data routing mechanism for a high speed memory cloner
US7403660B2 (en) 2003-04-30 2008-07-22 Nokia Corporation Encoding picture arrangement parameter in picture bitstream
KR100513274B1 (en) 2003-07-30 2005-09-09 이디텍 주식회사 A controlling method for a high speed DVI using compression technique and a DVI transmitter and Receiver using the method
US20050073586A1 (en) * 2003-10-06 2005-04-07 Songnian Li Digital camera interface
CN1309258C (en) * 2003-12-19 2007-04-04 联想(北京)有限公司 A method of lossless image compression applied to real time transmission
US7394410B1 (en) 2004-02-13 2008-07-01 Samplify Systems, Inc. Enhanced data converters using compression and decompression
US20050195205A1 (en) * 2004-03-03 2005-09-08 Microsoft Corporation Method and apparatus to decode a streaming file directly to display drivers
US7539218B2 (en) * 2004-03-04 2009-05-26 Nvidia Corporation Media processing engine framework
US7570270B2 (en) * 2004-05-21 2009-08-04 Broadcom Corporation Buffer for driving display with asynchronous display engine
US7656561B2 (en) 2004-05-31 2010-02-02 Phase One A/S Image compression for rapid high-quality imaging
CN101002477A (en) * 2004-08-13 2007-07-18 皇家飞利浦电子股份有限公司 System and method for compression of mixed graphic and video sources
CN2724334Y (en) 2004-08-27 2005-09-07 马晨阳 Cell phone video frequency image monitor
US20060104356A1 (en) * 2004-11-15 2006-05-18 Microsoft Corporation Timing for decoder buffer examination
US20060176960A1 (en) * 2005-02-07 2006-08-10 Paul Lu Method and system for decoding variable length code (VLC) in a microprocessor
US8311088B2 (en) * 2005-02-07 2012-11-13 Broadcom Corporation Method and system for image processing in a microprocessor for portable video communication devices
KR101199498B1 (en) 2005-03-31 2012-11-09 삼성전자주식회사 Apparatus for encoding or generation of multi-view video by using a camera parameter, and a method thereof, and a recording medium having a program to implement thereof
JP4368835B2 (en) 2005-08-29 2009-11-18 富士通マイクロエレクトロニクス株式会社 Image processing apparatus, imaging apparatus, and image processing system
KR100744120B1 (en) 2006-01-10 2007-08-01 삼성전자주식회사 Image signal scaler and image signal processing apparatus having the same
US8296156B2 (en) * 2006-02-07 2012-10-23 Lg Electronics, Inc. Apparatus and method for encoding/decoding signal
US7873224B2 (en) 2006-03-01 2011-01-18 Qualcomm Incorporated Enhanced image/video quality through artifact evaluation
US20070286277A1 (en) * 2006-06-13 2007-12-13 Chen Xuemin Sherman Method and system for video compression using an iterative encoding algorithm
JP4250648B2 (en) 2006-09-21 2009-04-08 株式会社東芝 Information processing device
EP1921867B1 (en) * 2006-10-17 2016-05-25 Harman Becker Automotive Systems GmbH Sensor assisted video compression
BRPI0718951A2 (en) * 2006-12-28 2013-12-17 Thomson Licensing METHOD AND APPARATUS FOR AUTOMATIC ANALYSIS OF VISUAL ARTFACTS AND ARTIFICATION REDUCTION
TW200830170A (en) 2007-01-04 2008-07-16 Benq Corp Data processing system and method
KR20080066408A (en) 2007-01-12 2008-07-16 삼성전자주식회사 3D image processing device and method
JP4858294B2 (en) * 2007-05-09 2012-01-18 ソニー株式会社 Imaging device, imaging circuit, and image processing circuit
FR2917919B1 (en) 2007-06-21 2010-06-11 Canon Kk METHOD AND DEVICE FOR TRANSMITTING IMAGES
US20090074058A1 (en) 2007-09-14 2009-03-19 Sony Corporation Coding tool selection in video coding based on human visual tolerance
US20090086174A1 (en) 2007-09-28 2009-04-02 Sanyo Electric Co., Ltd. Image recording apparatus, image correcting apparatus, and image sensing apparatus
US8049761B1 (en) 2007-11-08 2011-11-01 Nvidia Corporation Bus protocol for transferring pixel data between chips
JP2009129484A (en) 2007-11-21 2009-06-11 Hitachi Ltd Information recording / reproducing device
DE102007058724B3 (en) 2007-12-06 2009-05-14 Fujitsu Siemens Computers Gmbh Data processing system
CN201127091Y (en) 2007-12-20 2008-10-01 唐斌 Mobile phone having function of preventing wireless video from watching
CN101217623B (en) 2007-12-26 2012-07-11 广东威创视讯科技股份有限公司 A quick manual focusing method
CN101472190B (en) * 2007-12-28 2013-01-23 华为终端有限公司 Multi-visual angle filming and image processing apparatus and system
JP5593596B2 (en) 2008-02-04 2014-09-24 ソニー株式会社 Video signal transmitting apparatus and video signal transmitting method
TW201026056A (en) 2008-12-16 2010-07-01 Quanta Comp Inc Image capturing device and image delivery method
AU2010206977B2 (en) * 2009-01-26 2016-02-25 Interdigital Vc Holdings, Inc. Frame packing for video coding
US8157738B2 (en) * 2009-06-02 2012-04-17 Samplify Systems, Inc. Ultrasound signal compression
US20100309987A1 (en) 2009-06-05 2010-12-09 Apple Inc. Image acquisition and encoding system
TWM378589U (en) * 2009-07-10 2010-04-11 Jetcom Technology Inc Video conference device in combination with camera lens
JP2011045039A (en) * 2009-07-21 2011-03-03 Fujifilm Corp Compound-eye imaging apparatus
CN102063265A (en) * 2009-11-17 2011-05-18 智微科技股份有限公司 Memory device and memory controller for accessing non-volatile memory
CN101702778B (en) * 2009-11-30 2011-04-13 公安部第一研究所 Network video encoder using PS encapsulation technology to carry OSD information
CN102118791B (en) * 2009-12-31 2014-01-08 华为技术有限公司 Method and device for transmitting data packets
CN102118792B (en) * 2009-12-31 2015-01-21 华为技术有限公司 Method and device for transmitting data packets
JP5131286B2 (en) 2010-01-04 2013-01-30 株式会社ニコン Image processing apparatus and image processing program
CN101778161A (en) * 2010-01-19 2010-07-14 中兴通讯股份有限公司 Mobile Internet terminal
US8588536B2 (en) 2010-02-22 2013-11-19 Texas Instruments Incorporated Guaranteed-rate tiled image data compression
US9973768B2 (en) 2010-03-16 2018-05-15 Texas Instruments Incorporated CABAC decoder with decoupled arithmetic decoding and inverse binarization
US20110234200A1 (en) * 2010-03-24 2011-09-29 Kishan Shenoi Adaptive slip double buffer
US8233534B2 (en) * 2010-04-09 2012-07-31 Newport Media, Inc. Frame buffer compression and memory allocation in a video decoder
US8446484B2 (en) 2010-04-21 2013-05-21 Nokia Corporation Image processing architecture with pre-scaler
US8599316B2 (en) 2010-05-25 2013-12-03 Intellectual Ventures Fund 83 Llc Method for determining key video frames
US20120120083A1 (en) * 2010-11-12 2012-05-17 Novatek Microelectronics Corp. Display apparatus, and display controller and operating method thereof
JP2012105188A (en) 2010-11-12 2012-05-31 Sony Corp Image output device, image output method, image processing system, image processing method, program, and imaging apparatus
KR20120058057A (en) 2010-11-29 2012-06-07 삼성전자주식회사 Offset canceling circuit, sampling circuit and image sensor
GB201020983D0 (en) * 2010-12-10 2011-01-26 Apical Ltd Display controller and display system
CN102647611A (en) 2011-02-18 2012-08-22 安凯(广州)微电子技术有限公司 Chip camera interface function testing method and chip camera interface function testing system
JP5822544B2 (en) * 2011-06-08 2015-11-24 キヤノン株式会社 Imaging apparatus and imaging system
US9077917B2 (en) * 2011-06-09 2015-07-07 Apple Inc. Image sensor having HDR capture capability
US8879826B2 (en) * 2011-07-05 2014-11-04 Texas Instruments Incorporated Method, system and computer program product for switching between 2D and 3D coding of a video sequence of images
CN102523446B (en) * 2011-12-26 2014-06-04 南京鹏力系统工程研究所 Adaptive compression method of radar video in vessel traffic navigation system
TW201408071A (en) * 2012-04-09 2014-02-16 Vid Scale Inc Weighted prediction parameter signaling for video coding
CN202551178U (en) 2012-04-25 2012-11-21 东北石油大学 Portable image acquisition and compression device
US9532080B2 (en) * 2012-05-31 2016-12-27 Sonic Ip, Inc. Systems and methods for the reuse of encoding information in encoding alternative streams of video data
CN102685532B (en) * 2012-06-04 2014-04-16 山东大学 Coding method for free view point four-dimensional space video coding system
CN102843566B (en) 2012-09-20 2015-06-17 歌尔声学股份有限公司 Communication method and equipment for three-dimensional (3D) video data
US20140092439A1 (en) 2012-09-28 2014-04-03 Scott A. Krig Encoding images using a 3d mesh of polygons and corresponding textures
US9355613B2 (en) 2012-10-09 2016-05-31 Mediatek Inc. Data processing apparatus for transmitting/receiving compression-related indication information via display interface and related data processing method
US20140098111A1 (en) 2012-10-09 2014-04-10 Mediatek Inc. Data processing system for transmitting compressed display data over display interface
US9077965B2 (en) 2012-10-12 2015-07-07 Mediatek Inc. Method and apparatus for performing lossy image compression through source quantization and lossless compression kernel, and related method and apparatus for image decompression
US9568985B2 (en) * 2012-11-23 2017-02-14 Mediatek Inc. Data processing apparatus with adaptive compression algorithm selection based on visibility of compression artifacts for data communication over camera interface and related data processing method
CN103220492A (en) 2013-03-25 2013-07-24 东莞市久益通信科技有限公司 Mobile Video Conference System Based on 3G Network
CN103294038A (en) 2013-06-10 2013-09-11 中山市拓维电子科技有限公司 Dynamic quality remote monitoring system of stabilized soil and cement stabilized gravel production process
CN103338354A (en) 2013-06-17 2013-10-02 青岛海信电子设备有限公司 Small-sized video encoding equipment, and video capture, coding and transmission system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030165200A1 (en) * 2001-08-30 2003-09-04 Pugel Michael Anthony Method and apparatus for simultaneously retrieving portions of a data stream from different channels
US20080025412A1 (en) * 2006-07-28 2008-01-31 Mediatek Inc. Method and apparatus for processing video stream

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9491495B2 (en) * 2015-01-16 2016-11-08 Analog Devices Global Method and apparatus for providing input to a camera serial interface transmitter
US10331564B2 (en) * 2017-11-29 2019-06-25 Intel Corporation Technologies for secure I/O with MIPI camera device
US20220337747A1 (en) * 2018-12-07 2022-10-20 Samsung Electronics Co., Ltd. Apparatus and method for operating multiple cameras for digital photography

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