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WO2016029502A1 - Procédé et dispositif de changement de source de signaux - Google Patents

Procédé et dispositif de changement de source de signaux Download PDF

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Publication number
WO2016029502A1
WO2016029502A1 PCT/CN2014/085882 CN2014085882W WO2016029502A1 WO 2016029502 A1 WO2016029502 A1 WO 2016029502A1 CN 2014085882 W CN2014085882 W CN 2014085882W WO 2016029502 A1 WO2016029502 A1 WO 2016029502A1
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WO
WIPO (PCT)
Prior art keywords
signal
video signal
memory
cached
source channel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2014/085882
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English (en)
Chinese (zh)
Inventor
赵新科
王海滨
虞顺
刘翔章
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen Skyworth RGB Electronics Co Ltd
Original Assignee
Shenzhen Skyworth RGB Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of WO2016029502A1 publication Critical patent/WO2016029502A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44213—Monitoring of end-user related data
    • H04N21/44222—Analytics of user selections, e.g. selection of programs or purchase activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
    • H04N21/4331—Caching operations, e.g. of an advertisement for later insertion during playback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
    • H04N21/440218—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display by transcoding between formats or standards, e.g. from MPEG-2 to MPEG-4
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk

Definitions

  • the present invention relates to the field of display devices, and in particular, to a method and an apparatus for switching a signal source.
  • the television as a living room entertainment terminal not only undertakes the use of the entertainment function of the television itself, but also has a plurality of peripheral signal ports, so the television is also a display terminal as various peripherals.
  • the television is also a display terminal as various peripherals.
  • peripheral products and more and more functions it is also frequent for users to switch signal sources to play different video content.
  • every time the TV set switches the signal source it needs to exit the playback process of the signal source before switching, and then call the initialization data of the switched signal source, and then display the video data of the switched signal source, thus causing The switching process of the signal source is slow and the signal display is slow, which forms a visual pause in switching the signal source, resulting in poor visual effects.
  • the main object of the present invention is to solve the technical problem that the multimedia playback device has poor visual effects due to slow process of switching signal sources and slow signal display.
  • the present invention provides a method for switching a signal source, and the method for switching the signal source includes the following steps:
  • the video signal corresponding to the switched source channel is read from the memory, and the video signal is displayed.
  • the method for switching the signal source further includes:
  • the step of acquiring the video signal in the signal source channel with the signal input comprises:
  • the step of buffering the video signal encoded in the signal source channel with the signal input into the memory includes:
  • the encoded video signal is the same as the video signal pre-cached in the memory, deleting the encoded video signal, and maintaining the video signal pre-cached in the memory;
  • the detecting instruction is an instruction generated by the multimedia playing device at a timing or an instruction generated when the multimedia playing device is powered on or an instruction generated when a signal source button is triggered.
  • the present invention further provides a switching device for a signal source, where the switching device of the signal source includes:
  • the detecting module is configured to detect whether each signal source channel of the multimedia playing device has a signal input when detecting the detecting instruction;
  • An acquisition module configured to acquire a video signal in a signal source channel with a signal input
  • a buffer module configured to buffer a video signal in the source channel of the acquired signal input into the memory
  • a reading module configured to: when the signal source switching instruction is detected, read a video signal corresponding to the switched source channel from the memory, and display the video signal.
  • the switching device of the signal source further includes:
  • An identification module for identifying a source channel having a signal input.
  • the acquiring module is further configured to acquire a video signal within a preset duration in a signal source channel having a signal input.
  • the cache module comprises:
  • a coding unit configured to encode a video signal in a signal source channel obtained with a signal input
  • a determining unit configured to determine whether the encoded video signal is the same as a video signal that is pre-cached in the memory
  • a holding unit configured to: after the encoded video signal is the same as the video signal pre-cached in the memory, delete the encoded video signal, and maintain the video signal pre-cached in the memory;
  • a replacing unit configured to replace the encoded video signal with the video signal pre-cached in the memory, after the encoded video signal is different from the video signal pre-cached in the memory.
  • the detecting instruction or the instruction generated by the multimedia playing device timing or the instruction generated when the multimedia playing device is powered on or the command generated by the signal source button is triggered.
  • the method and device for switching a signal source of the present invention by detecting the signal input state (ie, with/without signal input) of each signal source channel of the multimedia playback device, and detecting all the signal source channels that have signal input
  • the video signal is pre-cached into the memory.
  • the pre-cached video signal is directly read from the switched source channel for display, eliminating the video of the switched source channel.
  • the signal is buffered to the memory for processing, so that the switched image signal can be displayed more quickly when the signal source channel is switched, the visual pause when the signal source channel is switched is greatly reduced, and the visual effect of the multimedia playback device is improved.
  • FIG. 1 is a flowchart of a first embodiment of a method for switching a signal source according to the present invention
  • FIG. 2 is a flowchart of a second embodiment of a method for switching a signal source according to the present invention
  • step S30 in FIG. 1 is a flow chart of the refinement of step S30 in FIG. 1;
  • FIG. 4 is a schematic diagram of functional modules of a first embodiment of a signal source switching apparatus according to the present invention.
  • FIG. 5 is a schematic diagram of functional modules of a second embodiment of a signal source switching apparatus according to the present invention.
  • FIG. 6 is a schematic diagram of a refinement function module of a cache module in a third embodiment of a signal source switching apparatus according to the present invention.
  • the present invention provides a method of switching a signal source, the method of switching the signal source running in a multimedia playback device (such as a television).
  • FIG. 1 is a flowchart of a first embodiment of a method for switching a signal source according to the present invention.
  • the method for switching the signal source includes:
  • Step S10 detecting, when detecting the detection instruction, detecting whether each signal source channel of the multimedia playback device has a signal input;
  • the multimedia playback device detects the detection command in real time, and the multimedia playback device detects whether each signal source channel of the multimedia playback device has a signal input when detecting the detection instruction, to confirm which signal source channels have signal input, and which signal source channels have no signal. Input.
  • the multimedia playback device does not detect the detection command, does not perform any operation or continues to detect the detection command.
  • detecting whether the signal source channel has a signal input can be determined by a status signal fed back by the signal source channel. For example, when the signal source channel has a signal input, the feedback status signal is at a first level (for example, a high level). When the signal source channel has no signal input, the feedback status signal is a second level (for example, a low level) opposite to the first level state.
  • the detection instruction may be an instruction generated by the multimedia playback device at a timing, that is, whether timing detection is performed on each signal source channel of the multimedia playback device; for example, a detection instruction is generated every 1 second. It is detected once in 1 second.
  • the detection command can also be an instruction generated when the multimedia playback device is powered on, that is, the multimedia playback device generates a detection command when the device is turned on, and detects whether there is a signal input for each signal source channel when the device is turned on. 3.
  • the detection command can also be a command generated when the signal source button (for example, the signal source channel selects the menu button) is triggered, that is, when the user presses the signal source button, a detection command is generated, and whether each signal source channel has a signal input is performed. Detection.
  • the generation of the detection instruction may include one or more of the above three modes, that is, the multimedia playback device generates the detection instruction periodically, generates the detection instruction when the power is turned on, and generates the detection instruction when the signal source button is triggered, and may exist at the same time.
  • Step S20 acquiring a video signal in a signal source channel with a signal input
  • the video signal in the signal source channel (the signal source channel with the signal input) is acquired for a period of time, and the video data in all the signal source channels with the signal input are respectively obtained.
  • the video signal in the source channel of the no-signal input signal may be not performed, or no operation may be performed, or whether the signal input of other signal source channels is continuously detected.
  • Step S30 buffering the video signal in the signal source channel with the signal input into the memory
  • the encoding process of the source channel is called, the acquired video signal is encoded into a video stream, and then the encoded video stream is buffered into the memory (for example, double Corresponding locations in the rate SDRAM) (different source channels correspond to different cache addresses) for the multimedia playback device to read the display.
  • the memory for example, double Corresponding locations in the rate SDRAM
  • Step S40 when the signal source switching instruction is detected, the video signal corresponding to the switched source channel is read from the memory, and the video signal is displayed.
  • the multimedia playback device detects the signal source switching instruction, and reads the video signal corresponding to the switched source channel from the memory: if the switched source channel is a signal source with signal input
  • the channel that is, the video stream buffered in the memory after the switching source channel is read for image preprocessing (image preprocessing including image reading, image decoding, audio and video synchronization processing and display format adjustment), and image preprocessing is completed.
  • image preprocessing image preprocessing including image reading, image decoding, audio and video synchronization processing and display format adjustment
  • image preprocessing image preprocessing including image reading, image decoding, audio and video synchronization processing and display format adjustment
  • the display data is sent to the CPU of the multimedia playing device, and is displayed through the CPU display channel; if the switched source channel is a signal source channel without signal input, the signal source channel without signal input is not buffered in the memory.
  • the video signal so the signal is not read, that is, no signal is displayed.
  • the method for switching the signal source proposed in this embodiment is to detect the signal input state (ie, with/without signal input) of each signal source channel of the multimedia playback device, and to detect all the signal source channels that have signal input.
  • the video signal is pre-cached into the memory.
  • the pre-cached video signal is directly read from the switched source channel for display, eliminating the video of the switched source channel.
  • the signal is buffered to the memory for processing, so that the switched image signal can be displayed more quickly when the signal source channel is switched, the visual pause when switching the signal source channel is greatly reduced, and the visual effect of the multimedia playing device is improved.
  • step S20 the step of acquiring the video signal in the signal source channel with the signal input comprises: acquiring the video signal within the preset duration in the signal source channel with the signal input.
  • the length of the acquired video signal can be preset, and can be set according to the remaining resource size of the CPU of the specific multimedia playback device. For example, when the multimedia playback device runs more processes and the CPU resources are less, the data can be obtained.
  • the duration of the video signal of the signal source channel with signal input is set smaller (for example, 3 seconds, 5 seconds), thereby reducing the CPU resource requirement of the multimedia playback device, reducing the burden on the CPU of the multimedia playback device, and making the multimedia playback device The use of the run is smoother.
  • the duration of the video signal in the signal source channel with the signal input can be set by itself, and the corresponding modification setting can be performed according to different operating burdens of the multimedia playing device, thereby ensuring multimedia. Smooth operation of the playback device.
  • FIG. 2 is a flowchart of a second embodiment of a method for switching a signal source according to the present invention.
  • the method for switching the signal source further includes:
  • step S50 the signal source channel with signal input is identified.
  • the signal source channel (the signal source channel with the signal input) is identified.
  • the manner of the identification may be various, for example, 1. the corresponding arrangement of the signal source channel on the interactive interface may be highlighted by a high brightness or displayed in a color background; 2. the corresponding source channel may be corresponding to the interaction interface. The words “with/with signal” are displayed on the option.
  • the signal source switching method can also display dark gray brightness of the corresponding signal source channel on the interactive interface when the signal source channel of the multimedia playback device has no signal input, or input no signal.
  • the signal source channel is shielded (not displayed) in the corresponding interface on the interactive interface; or, the signal source switching method can correspond to the signal source channel with signal input and the signal source channel with no signal input on the interaction interface.
  • the options are divided into two types of separate displays (for example, divided into "with signal” and "no signal”).
  • the user can clearly know which signal source channels have signal input, and avoid the user in each signal source channel when switching the signal source channel.
  • the blind switching operation (including the signal source channel with signal input and the signal source channel without signal input) allows the user to switch to the source channel that you want to watch more accurately and efficiently when switching the source channel.
  • FIG. 3 is a flow chart of the refinement of step S30 in FIG.
  • step S30 of the method for switching the signal source includes:
  • Step S301 encoding a video signal in a signal source channel obtained with a signal input
  • the encoding process of the source channel of the acquired video signal is called, and the acquired video signal is encoded into a video stream.
  • Step S302 determining whether the encoded video signal is the same as the video signal pre-cached in the memory
  • the video signal pre-cached in the memory corresponding to the signal source channel having the signal input in the memory can be compared with the video signal corresponding to the signal source channel in the memory. To determine whether the video signal in the signal source channel with the signal input is updated, that is, whether the encoded video signal is the same as the video signal pre-cached in the memory.
  • Step S303 if the encoded video signal is the same as the video signal pre-cached in the memory, the encoded video signal is deleted, and the video signal pre-cached in the memory is held;
  • the comparison result is the same, it means that the video signal in the signal source channel with signal input is not updated. In this case, the encoded video signal is not needed, the encoded video signal is deleted, and the video pre-cached in the memory is kept. The signal does not change.
  • Step S304 if the encoded video signal is different from the video signal pre-cached in the memory, the encoded video signal is replaced with a video signal pre-cached in the memory.
  • the comparison result is different, indicating that the video signal in the signal source channel with the signal input is updated, it is necessary to update the video signal pre-cached in the memory corresponding to the signal source channel having the signal input in the memory, so that the multimedia is
  • the latest video signal is read for display; at this time, the video signal pre-cached in the memory is useless, so the encoded video signal is replaced.
  • the video signal pre-cached in the memory is cleared, and the video signal pre-cached in the memory is cleared, and the encoded video signal is buffered to form the latest video signal pre-cached in the memory, and the next encoded video signal is updated with the latest one.
  • the video signals pre-cached in the memory are compared for comparison.
  • the method for switching the signal source of the embodiment by detecting whether the video signal in the signal source channel with the signal input is updated, when the update is performed, the newly acquired video signal is encoded, and the corresponding pre-cached in the memory is replaced in the memory.
  • the video signal avoids the use of memory by useless video signals; at the same time, when there is no update, the video signal corresponding to the pre-cached memory in the memory is directly kept unchanged, and the encoded video signal is deleted without being cached. , effectively reducing the occupation of the CPU resources of the multimedia playback device.
  • the present invention further provides a switching device for a signal source, the switching device of which operates in a multimedia playback device, such as a television.
  • FIG. 4 is a schematic diagram of functional modules of a first embodiment of a signal source switching apparatus according to the present invention.
  • the switching device of the signal source includes:
  • the detecting module 10 is configured to detect whether each signal source channel of the multimedia playing device has a signal input when detecting the detecting instruction;
  • the detecting module 10 detects the detecting instruction, and when detecting the detecting command, the detecting module 10 detects whether each signal source channel of the multimedia playing device has a signal input, to confirm which signal source channels have signal input, and which signal source channels have no signal input. .
  • the detection module 10 does not detect the detection instruction, does not perform any operation or continues to detect the detection instruction.
  • detecting whether the signal source channel has a signal input can be determined by a status signal fed back by the signal source channel. For example, when the signal source channel has a signal input, the feedback status signal is at a first level (for example, a high level). When the signal source channel has no signal input, the feedback status signal is a second level (for example, a low level) opposite to the first level state.
  • the detection instruction may be an instruction generated by the multimedia playback device at a timing, that is, whether timing detection is performed on each signal source channel of the multimedia playback device; for example, a detection instruction is generated every 1 second. It is detected once in 1 second.
  • the detection command can also be an instruction generated when the multimedia playback device is powered on, that is, the multimedia playback device generates a detection command when the device is turned on, and detects whether there is a signal input for each signal source channel when the device is turned on. 3.
  • the detection command can also be a command generated when the signal source button (for example, the signal source channel selects the menu button) is triggered, that is, when the user presses the signal source button, a detection command is generated, and whether each signal source channel has a signal input is performed. Detection.
  • the generation of the detection instruction may include one or more of the above three modes, that is, the multimedia playback device generates the detection instruction periodically, generates the detection instruction when the power is turned on, and generates the detection instruction when the signal source button is triggered, and may exist at the same time.
  • the obtaining module 20 is configured to acquire a video signal in a signal source channel with a signal input;
  • the acquiring module 20 acquires a video signal in the signal source channel (the signal source channel with the signal input) for a period of time, and respectively acquires all the signal source channels having the signal input. Video data.
  • the acquiring module 20 may not acquire the video signal in the signalless input signal source channel, or do nothing, or let the detecting module 10 continue to detect whether other signal source channels are detected. There is a signal input.
  • the buffer module 30 is configured to buffer the video signal in the signal source channel that has acquired the signal input into the memory;
  • the encoding process of the source channel is called, the acquired video signal is encoded into a video stream, and then the encoded video stream is buffered into the memory (for example, double Corresponding locations in the rate SDRAM) (different source channels correspond to different cache addresses) for the multimedia playback device to read the display.
  • the memory for example, double Corresponding locations in the rate SDRAM
  • the reading module 40 is configured to: when the signal source switching instruction is detected, read the video signal corresponding to the switched source channel from the memory, and display the video signal.
  • the reading module 40 detects the signal source switching instruction, and reads the video signal corresponding to the switched signal source channel from the memory: if the switched signal source channel is a signal input signal
  • the source channel reads the video stream buffered in the memory by the read module 40 to perform image preprocessing (image preprocessing including image reading, image decoding, audio and video synchronization processing, and display format adjustment).
  • image preprocessing including image reading, image decoding, audio and video synchronization processing, and display format adjustment.
  • the display data is sent to the CPU of the multimedia playing device, and is displayed through the CPU display channel; if the switched source channel is a signal source channel without signal input, the signal is not buffered due to no signal in the memory.
  • the video signal of the input source channel so the reading module 40 can not read the signal, that is, no signal is displayed.
  • the signal source switching device proposed in this embodiment detects the signal input state (ie, presence/absence of signal input) of each signal source channel of the multimedia playback device, and detects all the signal source channels that have signal input.
  • the video signal is pre-cached into the memory.
  • the pre-cached video signal is directly read from the switched source channel for display, eliminating the video of the switched source channel.
  • the signal is buffered to the memory for processing, so that the switched image signal can be displayed more quickly when the signal source channel is switched, the visual pause when switching the signal source channel is greatly reduced, and the visual effect of the multimedia playing device is improved.
  • the obtaining module 20 is further configured to acquire a video signal within a preset duration in the signal source channel with the signal input.
  • the length of the video signal acquired by the obtaining module 20 can be preset, and can be reasonably set according to the remaining resource size of the CPU of the specific multimedia playing device. For example, when the multimedia playing device runs more processes and the CPU resources are less, The duration of the video signal of the source channel with the signal input can be set smaller (for example, 3 seconds, 5 seconds), thereby reducing the CPU resource requirement of the multimedia playback device and reducing the burden on the CPU of the multimedia playback device. The use of multimedia playback devices runs more smoothly.
  • the switching device of the signal source of the embodiment can set the duration of the video signal in the signal source channel with the signal input, and can perform corresponding modification and setting according to different operating burdens of the multimedia playing device, thereby ensuring multimedia. Smooth operation of the playback device.
  • FIG. 5 is a schematic diagram of functional modules of a second embodiment of a signal source switching apparatus according to the present invention.
  • the switching device of the signal source further includes:
  • the identification module 50 is configured to identify a signal source channel with a signal input.
  • the identification module 50 When detecting that the signal source channel of the multimedia playing device has a signal input, the identification module 50 identifies the signal source channel (the signal source channel with the signal input).
  • the identifier module 50 can be identified in multiple manners, for example, 1. the corresponding channel of the signal source channel can be highlighted by a high-brightness or a color background, and the source channel can be in an interactive interface. The words “with/with signal” are displayed on the corresponding options.
  • the identification module 50 of the switching device of the signal source may display dark grayscale brightness on the corresponding interface of the signal source channel without signal input when the signal source channel of the multimedia playback device has no signal input, or The signal source channel without signal input is shielded (not displayed) in the corresponding interface on the interactive interface; or, the identification module 50 of the switching device of the signal source can have a signal source channel with signal input and a signal source with no signal input.
  • the corresponding options of the channel on the interactive interface are divided into two types of separate display (for example, divided into "with signal” and "no signal” separately).
  • the signal source switching device of the embodiment identifies the signal source channel with the signal input through the identification module 50, so that the user can clearly know which signal source channels have signal input, thereby avoiding the user in switching the signal source channel.
  • the source channel (including the signal source channel with signal input and the signal source channel without signal input) is blindly switched, so that when the user switches the signal source channel, it can switch to the source channel that you want to watch more accurately and efficiently. .
  • FIG. 6 is a schematic diagram of a refinement function module of a cache module in a third embodiment of a signal source switching apparatus according to the present invention.
  • the cache module 30 includes:
  • the encoding unit 31 is configured to encode the video signal in the signal source channel that has acquired the signal input;
  • the encoding unit 31 calls an encoding program of the source channel of the acquired video signal, and encodes the acquired video signal into a video stream.
  • the determining unit 32 is configured to compare the encoded video signal with a video signal pre-cached in the memory corresponding to the signal source channel in the memory;
  • the determining unit 32 buffers the video signal pre-cached in the memory corresponding to the signal source channel with the signal input in the memory (that is, the video stream whose signal source channel has been buffered in the memory) An alignment is made to determine if the video signal in the source channel with the signal input is updated.
  • the holding unit 33 is configured to determine whether the encoded video signal is the same as the video signal pre-cached in the memory
  • the holding unit 33 can buffer the video signal pre-cached in the memory corresponding to the signal source channel with the signal input in the memory (that is, the video stream with the signal input channel already buffered in the memory)
  • the comparison is performed to determine whether the video signal in the signal source channel with the signal input is updated, that is, whether the encoded video signal is identical to the video signal pre-cached in the memory.
  • the replacing unit 34 is configured to replace the encoded video signal with a video signal pre-cached in the memory, and replace the encoded video signal with a video signal pre-cached in the memory.
  • the replacement unit 34 will encode the coded
  • the video signal replaces the video signal pre-cached in the memory, that is, the video signal pre-cached in the memory is cleared, and the encoded video signal is buffered to form the latest video signal pre-cached in the memory, and the next encoded video signal is Is it the same as the latest video signal pre-cached in memory?
  • the switching device of the signal source of the embodiment detects the presence or absence of the video signal in the signal source channel with the signal input.
  • the newly acquired video signal is encoded and replaced with the corresponding pre-cached in the memory.
  • the video signal avoids the use of memory by useless video signals; at the same time, when there is no update, the video signal corresponding to the pre-cached memory in the memory is directly kept unchanged, and the encoded video signal is deleted without being cached. , effectively reducing the occupation of the CPU resources of the multimedia playback device.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Social Psychology (AREA)
  • Studio Circuits (AREA)
  • Television Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

L'invention concerne un procédé de changement de source de signaux. Le procédé comporte les étapes suivantes: suite à la détection d'une commande de test, tester si chaque canal source de signaux d'un dispositif de lecture multimédia dispose d'une entrée de signaux; obtenir les signaux vidéo de canaux sources de signaux disposant d'une entrée de signaux; selon des règles prédéfinies de mise en cache, coder et mettre en cache dans une mémoire les signaux vidéo obtenus; et, suite à la détection d'une commande de changement de source de signaux, lire à partir de la mémoire le signal vidéo correspondant au canal source de signaux après changement, et afficher le signal vidéo. L'invention concerne également un dispositif de changement de source de signaux. Dans le procédé et le dispositif de changement de source de signaux de la présente invention, lors du changement de canaux sources de signaux, le signal d'image après changement peut être affiché plus vite, réduisant ainsi considérablement l'immobilisation visible lors du changement de canaux sources de signaux, et améliorant ainsi les effets visuels du dispositif de lecture multimédia.
PCT/CN2014/085882 2014-08-29 2014-09-03 Procédé et dispositif de changement de source de signaux Ceased WO2016029502A1 (fr)

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CN201410435950.7A CN104320701B (zh) 2014-08-29 2014-08-29 信号源的切换方法及装置
CN201410435950.7 2014-08-29

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CN106658138B (zh) * 2016-07-25 2019-09-03 青岛海信电器股份有限公司 智能电视及其信号源切换方法、装置
CN106254937B (zh) * 2016-08-09 2019-12-03 深圳Tcl数字技术有限公司 电视机及其信号源的切换方法
CN106254926A (zh) * 2016-08-10 2016-12-21 青岛海信电器股份有限公司 输入通道图标的显示控制方法和电视终端
CN106375683A (zh) * 2016-09-21 2017-02-01 广州视源电子科技股份有限公司 电视信号通道切换方法及装置
CN107333180B (zh) * 2017-06-28 2020-07-21 深圳Tcl新技术有限公司 电视机的信源切换方法、电视机及计算机可读存储介质
CN115334266A (zh) * 2022-08-10 2022-11-11 深圳创维－Rgb电子有限公司 音频响度调节方法、装置、电子设备及存储介质
CN115346564B (zh) * 2022-08-17 2024-10-29 上海今海医疗科技有限公司 一种基于存储容量判断刻录机模块信号源接入系统

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