JP2001083948A - Display device and method thereof - Google Patents

Abstract

(57) [Summary] [Problem] To display an image stored in a digital camera with high image quality. SOLUTION: An IrDA interface 6 for interfacing with a digital camera using infrared light,
Under the control of the IrDA interface 6,
The image data stored in the digital camera 21 is input and expanded by infrared light, and the expanded image data is displayed on the liquid crystal panel 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device capable of exchanging image data with a digital camera and a method therefor.

[0002]

2. Description of the Related Art A conventional display device displays a color image by inputting a video signal such as NTSC or an RGB signal from a computer device or the like.

Recently, digital cameras have become widespread, and as an interface means using infrared rays for transmitting image data between these digital cameras, for example, Ir is used.
DA has proposed a standard called IrTran-P, and digital cameras equipped with these interfaces are commercially available.

[0004]

However, since the conventional display device does not have such an interface using infrared rays, high-resolution image data output from a digital camera is directly taken in through such an interface. I couldn't do that. Therefore, in such a display device, for example, image data is taken in a state where a digital signal is converted into an NTSC signal, or the image data is once taken into a computer from a digital camera, and the image data is taken into a display device through the computer device. Image data had to be output and displayed. Since such an NTSC signal depends on the resolution of the television, even if the original image is a high-resolution image, the resolution of the displayed image is significantly reduced.

At present, a display device capable of transmitting image data of a high-quality color image output from an information processing device or the like displayed on a screen to a digital camera and storing the same is realized. Absent.

The present invention has been made in view of the above conventional example, and has as its object to provide a display device and a method thereof capable of displaying an image stored in a digital camera with high image quality.

Another object of the present invention is to provide a display device having an interface using infrared rays which is a standard interface of a digital camera, and capable of transmitting and receiving image data to and from the digital camera, and a method therefor. is there.

Another object of the present invention is to provide a display device and a method for transmitting image data of an image displayed on the display device to a digital camera.

[0009]

In order to achieve the above object, a display device of the present invention has the following arrangement. That is, a camera communication control means for controlling an interface using infrared light with the digital camera, and image data stored in the digital camera is input and developed by infrared light under the control of the camera communication control means. Image processing means, and display means for displaying image data developed by the image processing means.

To achieve the above object, the display method of the present invention comprises the following steps. That is, the method includes a step of inputting image data stored in the digital camera with infrared light and developing the image data, and a display step of displaying the developed image data.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

An embodiment of the display device of the present invention will be described. The display device of the present embodiment is applied to a data projector.

[First Embodiment] FIG. 1 is a block diagram showing a configuration of a display device 1 according to the present embodiment.

In FIG. 1, reference numeral 2 denotes a system bus, which connects each unit included in the display device 1 described later. Reference numeral 3 denotes a CPU that controls the entire display device and executes various processes. Reference numeral 4 denotes a ROM, which stores a control program executed by the CPU 3 and the like. The control program may be stored in the RAM 5 from a storage medium such as a hard disk and executed. The RAM 5 is used as a work area for storing various data during the control operation of the CPU 3 and also for storing various data such as image data described later. 6 is an IrDA interface (IrDA
I / F) controls communication of various data with the digital camera 21. Reference numeral 7 denotes a remote control interface which receives infrared light transmitted from a remote controller of the display device 1. Reference numeral 8 denotes a serial interface for performing serial communication with another computer device or the like. Reference numeral 9 denotes a drawing signal processing unit.
Image data and the like developed by M5 and captured by the digital camera 21 are converted into drawing signals. The liquid crystal panel 10 is a portion that displays an image to be projected on a projector (not shown). However, the liquid crystal panel 10 may be a normal display panel that simply displays an image. Here, in the case of the reflection type, light is applied to the liquid crystal panel 10 to illuminate the liquid crystal panel 10.
The image displayed above is reflected and projected on the screen of the projector via the optical system. In the case of transmission type,
By irradiating light from behind the liquid crystal panel 10, an image displayed on the liquid crystal panel 10 is projected on a screen of a projector via an optical system. Here, the description of these optical systems and the screen of the projector will be omitted.

Reference numeral 11 denotes an analog signal interface for inputting an analog video signal such as NTSC, PAL, or SECAM. The analog signal / interface 11 is connected to the signal processing unit 9. The analog video signal input through the analog signal / interface 11 is processed by the signal processing unit 9 and the liquid crystal panel 10 is processed.
And the image can be projected and displayed on a projector. Reference numeral 12 denotes an RGB signal interface for inputting a video signal from another computer device or the like. The RGB signal / interface 12 is also connected to the signal processing section 9, and the image based on the RGB video signal input via the RGB interface 12 is displayed on the liquid crystal panel 10 so as to be projected and displayed on the projector. Can be.

In the above configuration, this display device 1
An image signal input via the analog signal interface 11 or the RGB interface 12 is displayed on the liquid crystal panel 10, or image data input from the digital camera 21 via the IrDA interface 6 is displayed on the liquid crystal panel 10. be able to.

FIG. 2 is a state transition diagram when transmitting image data captured by the digital camera 21 from the digital camera 21 connected to the display device 1 via the IrDA interface 6.

When image data is to be transmitted from the digital camera 21 to the display device 1, processing is performed according to the state transition shown in FIG. First, a connection request is issued from the digital camera 21 to the display device 1 (step S1). At this time, if the display device 1 is in a state capable of receiving image data, a connection permission is issued to the digital camera 21 (step S2). Accordingly, the digital camera 21 transmits a request for confirming the size of the receivable image data to the display device 1 in order to select the size of the image data to be transmitted (step S3). Thus, the display device 1 returns the size of the receivable image data (step S4). Thus, in step S5, the digital camera 21 transmits the image data having the size obtained in step S4 to the display device 1. In this way, all of the image data to be transmitted from the digital camera 21 to the display device 1 is transmitted, and when there is no error or the like in the received image data, the display device 1 notifies the digital camera 21 of the end of the reception of the image data. Notify (step S6). In the display device 1, the received image data is stored in the RAM 5.

When the digital camera 21 receives the notification of the completion of the reception of the image data from the display device 1, it transmits a disconnection request and performs a disconnection process (step S7). As a result, in step S8, the display device 1
When a disconnection request is received from, a disconnection process is performed.

When the image data sent from the digital camera 21 is stored in the RAM 5, the CPU 3
Is, for example, the JPEG code stored in the RAM 5
The decompression process is executed according to the program stored in the OM 4 to develop a bit-up image, the bitmap data is transferred to the signal processing unit 9 via the system bus 2 and subjected to image processing. The image is displayed, and further projected and displayed on a projector screen via an optical system.

As described above, according to the display device of the first embodiment, image data from the digital camera 21 can be directly transferred to the display device and projected on the projector screen.

Second Embodiment Next, a second embodiment of the present invention will be described. In the second embodiment, a connection request is issued from the display device 1 to the digital camera 21,
The image data stored in the display device 1 or displayed on the liquid crystal panel 10 is transmitted to the digital camera 21 and stored in the digital camera 21. The configuration of the display device 1 according to the second embodiment is the same as the configuration of the first embodiment shown in FIG.

FIG. 3 shows a display device 1 according to the second embodiment.
FIG. 6 is a state transition diagram when image data is transmitted to and displayed on the digital camera 21 from the camera.

Here, a case where image data displayed on the liquid crystal panel 10 of the display device 1 is transmitted to the digital camera 21 will be described. Here, the display device 1 is a liquid crystal panel 1
The image data of the image displayed on the projector screen and displayed on the projector screen is transmitted from the signal processing unit 9 to the system bus 2.
The CPU 3 performs a compression process according to a program stored in the ROM 4 and stores the data in the RAM 5. At this time, image data having the maximum size of the display device 1 and image data having a standard size of IrTran-P are prepared.

First, in step S11, the display device 1 issues a connection request to the digital camera 21. If the digital camera 21 is ready to receive image data, a connection permission is sent from the digital camera 21 to the display device 1 in step S12. Next, step S
At 13, the display device 1 transmits a request for checking the size of the receivable image data to the digital camera 21 in order to select the size of the image data to be transmitted. In response, the digital camera 21 returns the size of the receivable image data in step S14. Thus, the display device 1 transfers the image data having the size obtained in step S14 to the display device 1 (step S15). Thus,
When transmission of all image data to be transmitted from the display device 1 to the digital camera 21 is completed, the digital camera 21 determines whether or not there is an error in the received image data. Is notified of the end of image data reception (step S16). Upon receiving the image data reception notification from the digital camera 21, the display device 1 determines in step S17 that the digital camera 21
To perform a disconnection process. Then, when receiving the disconnection request from the display device 1, the digital camera 21 performs a disconnection process (step S18).

As described above, in the display device according to the second embodiment, the image data displayed on the display device 1 can be directly transmitted to the digital camera 21.

In this embodiment, IrDA is used for the interface between the display device and the digital camera. However, the present invention is not limited to this. For example, even if wired serial communication is used. Good. Further, a display device having a configuration in which the first and second embodiments are combined may be used.

Even if the present invention is applied to a system including a plurality of devices (for example, a host computer, an interface device, a reader, a printer, etc.), a device including one device (for example, a copying machine, a facsimile machine) Etc.).

Another object of the present invention is to supply a storage medium (or a recording medium) in which program codes of software for realizing the functions of the above-described embodiments are recorded to a system or an apparatus, and to provide a computer (a computer) of the system or the apparatus. Alternatively, the present invention is also achieved when a CPU or an MPU reads and executes a program code stored in a storage medium. In this case, the program code itself read from the storage medium implements the functions of the above-described embodiment, and the storage medium storing the program code constitutes the present invention. By executing the program code read by the computer, not only the functions of the above-described embodiments are realized, but also an operating system (OS) running on the computer based on the instruction of the program code. This includes a case where a part or all of the actual processing is performed, and the functions of the above-described embodiments are realized by the processing.

Further, after the program code read from the storage medium is written into a memory provided in a function expansion card inserted into the computer or a function expansion unit connected to the computer, the program code is read based on the instruction of the program code. This also includes the case where the CPU provided in the function expansion card or the function expansion unit performs part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.

As described above, according to the first embodiment, when displaying the image of the digital camera 21 on the display device, the image data stored in the digital camera 21 is directly transmitted to the display device and displayed. be able to. Also,
Since it is not converted into an NTSC signal or the like, a high-resolution image can be transmitted and displayed.

According to the second embodiment, images and video images displayed on a display device, for example, transmitted from an information processing device or the like can be directly transmitted to the digital camera 21 and stored. Therefore, using a data processing device or the like, the image data of
There is an effect that it is not necessary to convert to image data for use.

[0033]

As described above, according to the present invention, an image stored in a digital camera can be displayed with high image quality.

According to the present invention, an interface using infrared rays, which is a standard interface of a digital camera, is provided, and image data can be exchanged with the digital camera.

Further, according to the present invention, there is an effect that image data of an image displayed on a display device can be transmitted to a digital camera.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of a display device according to an embodiment of the present invention.

FIG. 2 is a state transition diagram when image data is transmitted from the digital camera to the display device according to the first embodiment.

FIG. 3 is a state transition diagram when image data is transmitted from the display device to the digital camera according to the first embodiment.

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) H04N 7/18 H04N 7/18 U // H04N 7/14 7/14 F term (reference) 5C022 AA13 AC31 AC69 5C054 AA02 AA05 CA04 CC02 DA05 DA07 EA05 FA02 FB04 HA17 5C064 AA04 AB02 AB03 AC04 AC13 AD06 AD14 5C080 AA10 BB05 JJ02 JJ07 KK43 5C082 AA27 BA20 BB01 MM05 MM10

Claims (10)

[Claims] 1. A camera communication control means for controlling an interface with a digital camera using infrared light, and image data stored in the digital camera is input as infrared light under the control of the camera communication control means. A display device comprising: an image processing unit that expands the image data; and a display unit that displays the image data expanded by the image processing unit. 2. The display device according to claim 1, further comprising interface means for transmitting and receiving an image signal to and from a computer device. 3. An NTSC for inputting an NTSC signal.
The display device according to claim 1, further comprising an interface unit. 4. The apparatus according to claim 1, wherein said display means projects and displays an image on a projector screen.
The display device according to any one of claims 1 to 3. 5. A conversion unit for converting image information displayed by the display unit into image information of the digital camera, and a transmission unit for transmitting the image information converted by the conversion unit to the digital camera. The display device according to claim 1, further comprising: 6. A display method, comprising: a step of inputting image data stored in a digital camera with infrared light and expanding the image data; and a display step of displaying the expanded image data. 7. The display method according to claim 6, further comprising a step of transmitting and receiving an image signal to and from a computer device. 8. The display method according to claim 6, further comprising a step of inputting an NTSC signal. 9. The display step of displaying an image by projecting the image on a projector screen.
9. The display method according to any one of claims 1 to 8. 10. A conversion step of converting image information displayed in the display step into image information of the digital camera, and a transmission step of transmitting the image information converted in the conversion step to the digital camera. Claims 5 to 9 further comprising
The display method according to any one of the above items.