JPH11313273A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reproduce an image and a voice signal related to each other synchronously by providing a voice storage means storing voice data and a voice reproduction means reproducing and outputting the voice data stored in the voice storage means to the display device. SOLUTION: A liquid crystal projector 10 is provided with a CPU 11, a timing controller 12, changeover switches 13R, 13G, 13B, a scanning conversion circuit 14, liquid crystal display panels 15R, 15G, 15B, a voice output circuit 16, a speaker 17, a microphone 18, a format conversion circuit 19, a file system section 20 and an external operation section 21 or the like. The liquid crystal projector 10 is provided with the file system 20 that stores image data and voice data or the like and has a function of reproducing image data and voice data related to each other synchronously among the image data and the voice data stored in the file system section 20. Thus, a voice signal in addition to an image signal is reproduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a display device such as a liquid crystal projector.

[0002]

2. Description of the Related Art When a presentation is performed using a display device such as a liquid crystal projector, a personal computer (hereinafter referred to as a personal computer) for executing the presentation is required. Therefore, when giving a presentation using a liquid crystal projector at a place where the user is going, it is necessary to carry a personal computer in addition to the liquid crystal projector.

Some liquid crystal projectors have a function of storing images and reproducing the stored images. However, a device having a function of reproducing sound has not yet been developed.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a display device capable of reproducing sound in addition to images.

[0005] It is an object of the present invention to provide a display device capable of storing images and sounds and reproducing the stored images and sounds.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a display device in which images and sounds are stored, and among the stored images and sounds, those related to each other can be synchronously reproduced. .

[0007]

A first display device according to the present invention comprises a voice storage means for storing voice data, and a voice reproduction means for reproducing and outputting the voice data stored by the voice storage means. It is characterized by the following.

[0008] A second display device according to the present invention is a sound storage means for storing sound data, a sound reproduction means for reproducing and outputting the sound data stored by the sound storage means,
It is characterized by comprising image storage means for storing image data, and image reproduction means for reproducing and outputting the image data stored by the image storage means.

[0009] A third display device according to the present invention is a sound storage means for storing sound data, a sound reproduction means for reproducing and outputting the sound data stored by the sound storage means,
Image storage means for storing image data, image reproduction means for reproducing and outputting image data stored by the image storage means, and image data stored in the image storage means and audio data stored in the voice storage means. Index information storage means for storing index information indicating the association, and control for controlling the image reproduction means and the audio reproduction means so as to synchronously reproduce and output the image and the audio associated with each other based on the index information. Means is provided.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a liquid crystal projector will be described below with reference to the drawings.

FIG. 1 mainly shows the configuration of a liquid crystal projector.

The liquid crystal projector 10 includes a CPU 11, a timing controller 12, changeover switches 13R and 13
G, 13B, scan conversion circuit 14, liquid crystal panel 15R, 1
5G, 15B, an audio output circuit 16, a speaker 17, a microphone 18, a format conversion circuit 19, a file system unit 20, an external operation unit 21, and the like.

The operation for displaying the image signals (R, G, B signals) output from the personal computer 30 in real time is the same as the operation of a general liquid crystal projector.

From the personal computer 30, R signal, G signal, B signal
A signal, a horizontal synchronizing signal and a vertical synchronizing signal are output.
The horizontal synchronization signal and the vertical synchronization signal are sent to the timing controller 12. Changeover switches 13R, 13G,
13B is switched to the first contact a side, and the R signal, the G signal, and the B signal are switched by the changeover switches 13R, 13R.
The data is sent to the scan conversion circuit 14 via G and 13B. The scan conversion circuit 14 performs scan conversion, image quality adjustment, and the like for displaying the input R signal, G signal, and B signal on the liquid crystal panels 15R, 15G, and 15B based on control data from the CPU 11, and performs timing control. The R signal, the G signal, and the B signal after the scan conversion, the image quality adjustment, and the like are performed based on the timing signal from the LCD panel 15 are sent to the liquid crystal panels 15R, 15G, and 15B. Thereby, an enlarged projection image for the image output from the personal computer 30 is displayed.

The liquid crystal projector 10 includes a file system section 20 capable of storing image data, audio data, and the like. Of the image data and audio data stored in the file system section 20, the liquid crystal projector 10 relates to each other. A function to play things synchronously (hereinafter referred to as images /
Audio playback function). Although not shown, the file system unit 20 includes an A / D converter, a D / A converter,
An image compression / decompression unit, an audio compression / decompression unit, a storage device, and the like are provided.

In the liquid crystal projector 10, there are the following three methods for achieving the image / sound reproduction function.

[1] First Method The personal computer 30 creates an image file, an audio file, and an index file, and stores these files in R
The file is taken into the file system unit 20 via the S232C cable. The index file is a file that associates an image file with an audio file.

Here, a case where three image files and three audio files are captured will be described.

The three image file names are defined as follows. image0.jpg image1.jpg image2.jpg

The three audio file names are defined as follows. sound0.wav sound1.wav sound2.wav

FIG. 2 shows an example of the index file.

The format of the index file is similar to an object-oriented language. In this index file, Image, Audio, setAudio, null, Rep
layTime, Time, User, Sec, and Play are reserved words (predefined words). The number at the left end of each line is a line number for reference.

The keyword "Image" declares that an object is an image. Therefore, the first line declares that img0, img1, and img2 are image file objects.

The second to fourth lines include image0.jpg, image1.jpg, and image0 for the objects img0, img1, and img2, respectively.
2.jpg is stored.

Line 6 declares that au0, au1, and au2 are audio file objects.

Lines 7 to 9 contain sound0.wav, sound1.wav, and sound2.wav for objects au0, au1, and au2, respectively.
Is stored.

Lines 11 to 13 contain the keyword "setAudi
o ”is used to determine the association between the image file object and the audio file object. In this example, the image file object img0 is associated with the audio file object au2, and the image file object img1 is associated with the audio file object au1. There is no audio file object associated with the image file object img2.

Lines 15 to 17 include the keyword “ReplayTi
The playback time of the image file object img0 is determined so as to match the playback time of the audio file object au2, and the playback time of the image file object img1 is determined as follows. 1
It is determined to be 0 seconds, and the playback time of the image file object img2 is determined to be until a user operation.

Lines 19 to 21 determine the order in which images are reproduced using the keyword "Play". In this example, im
It is decided to play back in the order of g2, img1, img0.

In the case where the above-described files are stored in the file system unit 20, when a reproduction start command is input by the user, the file system unit 20
The CPU 11 executes an image / sound reproduction process based on the index file stored in the storage device inside. As shown in FIG. 3, first, the file system unit 20
The image data of the image file of image2.jpg is read out from the storage means, and if necessary, subjected to image decompression processing, and then converted into analog R, G, and B signals.
The obtained R signal, G signal, and B signal are supplied to the switch 13
R, 13G, 13B (switched to contact b side)
And a liquid crystal panel 15R via the scan conversion circuit 14.
15G and 15B for display.

When a page break command is input by a user operation (User action), the image data of the image file of image1.jpg is read from the storage means of the file system unit 20, and the image decompression process is performed if necessary. After that, it is converted into an analog R signal, G signal, and B signal. The obtained R signal, G signal and B signal are supplied to the changeover switches 13R and 13R.
The data is sent to the liquid crystal panels 15R, 15G, and 15B via the G and 13B and the scan conversion circuit 14 and displayed.

At the same time, the sound data of the sound file Sound1.wav is read from the storage means of the file system unit 20 and, if necessary, subjected to sound decompression processing.
It is converted to an analog audio signal. The obtained audio signal is sent to the speaker 17 via the audio output circuit 16 and output.

1 from the page break command by the user operation
After the elapse of 0 seconds, the image data of the image file of image0.jpg is read from the storage unit of the file system unit 20, and if necessary, after image decompression processing is performed, the analog R signal, G signal, B signal Converted to a signal. The obtained R signal, G signal, and B signal are used as changeover switches 13R, 13G,
13B and the scan conversion circuit 14, the liquid crystal panel 1
It is sent to 5R, 15G, and 15B for display.

At the same time, the sound data of the sound file Sound2.wav is read from the storage means of the file system unit 20 and, if necessary, subjected to sound decompression processing.
It is converted to an analog audio signal. The obtained audio signal is sent to the speaker 17 via the audio output circuit 16 and output. When the sound reproduction time corresponding to Sound2.wav ends, the reproduction of the image corresponding to image0.jpg also ends.

[2] Second Method The second method is different from the first method in how to take in an audio file.

An image file and an index file are created on the personal computer 30 side, and these files are stored in the RS23.
The data is taken into the file system unit 20 via the 2C cable. The audio file is taken into the file system unit 20 via the microphone 18 and the format conversion circuit 19. The format conversion circuit 19 converts the input audio signal into a predetermined file format (for example, a wav format).
Convert to

[3] Third Method The third method differs from the first method in the way of capturing image files and audio files.

An index file is created on the personal computer 30 side, and these files are taken into the file system unit 20 via the RS232C cable.

The audio file is taken into the file system section 20 via the microphone 18 and the format conversion circuit 19. The format conversion circuit 19 converts the input audio signal into a predetermined file format (for example, wav
Format).

The image file is fetched from the R, G and B signals output from the personal computer 30. Specifically, when the R signal, the G signal, and the B signal output from the personal computer 30 are sent to the file system unit 20, they are stored in the storage unit after A / D conversion and image compression. At this time, the changeover switches 13R, 13G,
If 13B is switched to the contact a side, the image output from the personal computer 30 is displayed, so that the image can be taken into the file system unit 20 while checking the image.

According to the present invention, in addition to a liquid crystal projector, a liquid crystal display device, a DMD (digital mirror device), an ILA
And the like.

[0042]

According to the present invention, a display device capable of reproducing sound in addition to images is realized. According to the present invention, a display device capable of storing images and sounds and reproducing the stored images and sounds is realized.
According to the present invention, a display device capable of storing images and sounds and synchronizing and reproducing related images and sounds among the stored images and sounds is realized.

[Brief description of the drawings]

FIG. 1 is a block diagram mainly showing a configuration of a liquid crystal projector.

FIG. 2 is a schematic diagram showing an example of an index file.

FIG. 3 is a schematic diagram for explaining image / sound reproduction processing executed based on the index file of FIG. 2;

[Explanation of symbols]

 Reference Signs List 10 liquid crystal projector 11 CPU 12 timing controller 13R, 13G, 13B changeover switch 14 scan conversion circuit 15R, 15G, 15B liquid crystal panel 16 audio output circuit 17 speaker 18 microphone 19 format conversion circuit 20 file system section 21 external operation section

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI H04N 5/91 H04N 5/91 C

Claims (3)

[Claims] 1. A display device comprising: audio storage means for storing audio data; and audio reproduction means for reproducing and outputting the audio data stored by the audio storage means. 2. An audio storage means for storing audio data, an audio reproduction means for reproducing and outputting the audio data stored by the audio storage means, an image storage means for storing image data, and an image storage means. A display device comprising: image reproducing means for reproducing and outputting image data. 3. An audio storage means for storing audio data, an audio reproduction means for reproducing and outputting the audio data stored by the audio storage means, an image storage means for storing image data, and an image stored by the image storage means. Image reproduction means for reproducing and outputting data; index information storage means for storing index information indicating association between image data stored in the image storage means and audio data stored in the audio storage means; and And a control means for controlling the image reproducing means and the audio reproducing means so as to synchronously reproduce and output the image and the sound associated with each other.