JPH07264534A - Short-time video display device - Google Patents

Abstract

PURPOSE:To obtain a video display device suitable to a purpose for viewing a short-time video. CONSTITUTION:A short-time video information is compressed and encoded by using encoding technique and an encoded video signal is stored in a storing medium such as a memory card 6. Video relational parts such as a video display 1, a memory card reading part 5 and a video decoder 7 are started by a switch 2 interlocked with the opening/closing of a cover for a music box device. When respective parts are started, the encoded video signal stored in the memory card 6 is repeatedly read out by a memory card reading control part 6. When the read signal is sequentially decoded by a video decoder 7, the short-time video is repeatedly displayed on a liquid crystal display 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display device using a storage medium.

[0002]

2. Description of the Related Art Conventional video signals are usually produced for long-term listening for entertainment and education. For this reason, for example, a video tape recorder for storing images generally uses a tape capable of recording for 2 hours, and if the quality of the image does not matter, it is usually used at high density by low-speed recording. There is.

[0003]

The conventional apparatus for recording / reproducing an image as described above has a configuration suitable for long-time viewing because the premise of the usage of the image is long-time viewing. It was not suitable for repeated viewing of images.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a video display device suitable for a short time video viewing application.

[0005]

In order to achieve the above-mentioned object, the invention of claim 1 of the present invention is a coded video storage means for storing coded video of information-compressed short time video,
A configuration including a storage signal reading unit that reads out the encoded video stored in the encoded video storage unit, a video decoding unit that sequentially decodes the read encoded video, and a unit that displays the decoded video. And

According to the invention of claim 2, the above-mentioned claim 1 is adopted.
In the above invention, the accumulated signal reading means repeatedly reads the encoded video.

Further, in the invention of claim 3, the above-mentioned claim 2 is adopted.
In the invention described above, a means for stopping the display by deciding the display time and stopping the accumulation reading means when the period has elapsed is provided.

Further, in the invention of claim 4, the above-mentioned claim 1
In the above invention, a replaceable storage medium such as a memory card is used as the coded image storage means.

According to the invention of claim 5, the above-mentioned claim 1 is adopted.
In the above invention, a semiconductor memory is used as the coded image storage means.

According to the invention of claim 6, the above-mentioned claim 1
The short-time image display device of the invention of claim 1 is combined with another device, and means for activating the accumulated signal reading means and activating the image display operation is provided in association with a specific operation or operation of the other device.

[0011]

In the short-time video display device of the present invention, the coded video can be used as a coded video in which the amount of information in the video signal is efficiently reduced while the deterioration during reproduction is minimized by the video coding. Enable accumulation. By reading out the stored encoded video signal and decoding the encoded video signal, a short-time video is generated once according to the application, or repeatedly in the invention of claim 2, or a predetermined time in the invention of claim 3. It can be displayed repeatedly.

According to the invention of claim 4, the image to be displayed is stored in a storage medium such as a memory card that can be easily carried and stored, and various short-time images can be displayed by exchanging the storage medium. Video search made easy by managing video content
The display time can be shortened.

Further, in the invention of claim 5, a semiconductor memory is used as the coded image storage means and a movable part for reading the same is eliminated, thereby improving maintainability.

Furthermore, according to the invention of claim 6, the operability and the function of the device are enhanced by combining with another device and interlocking with the operation and operation of the device.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 shows an embodiment of a short-time image display device according to the present invention, which is an example of a music box device having a video display function. In the figure, 1 is a liquid crystal display, 2 is a switch of a music box device, 3 is a music box music player, 4 is a memory card in which encoded video is stored, 5 is a memory card reading unit, and 6 is memory card reading control. Part 7 is a video decoder.

In the above structure, the liquid crystal display 1
Is incorporated in the lid of the music box device, and by opening the lid of the music box device, the switch 2 of the entire device is actuated, the music box music player 3 is activated, and at the same time, the chassis potential of the device is transmitted from the switch 2. Then, the video-related parts, that is, the liquid crystal display 1, the memory card reading unit 5, and the video decoder 7 are activated. The music box music reproducer 3 repeatedly reproduces music for a short time by the power of the mainspring as in a normal music box or electronically. The memory card 4 stores a short-time video, for example, a video of about 20 seconds, which is coded according to the MPEG (moving picture expert group) system proposed by ISO or the like. The stored encoded video is read by the memory card reading unit 5 in ascending order of memory address. In the head portion of the video signal stored in the memory card, the storage start address and the final address of the encoded video are written, and by decoding the information when the memory card reading is started, the memory card reading unit 5 Are stored in the reading control unit 6. Thereafter, the coded video data number is sequentially read from the read head address, and after reaching the final address, the same coded video data is read repeatedly by returning to the head address. The read encoded video data complies with the MPEG system, and the signal contains all the information for decoding. As a result, the video decoder 7 can decode the original video signal from only the read encoded video data.
The video signal sequentially decoded by the video decoder 7 is displayed on the liquid crystal display 1. LCD display 1
When is closed, switch 2 is turned off and both video and music systems are stopped.

FIG. 2 shows an example of storing a video signal in the memory card 4. At the beginning (0000 (hexadecimal number)) of the memory address of the memory card 4, the video data storage start address (0010 (hexadecimal number)) is set, and at the next address (0002 (hexadecimal number)), the video data storage end address is set. (1FF0 (hexadecimal number)) is stored. The memory card reading control unit 6 in FIG.
These video data storage start address and end address are accumulated, and the addresses are repeatedly accessed while sequentially increasing by 2 between these addresses.

In the above embodiment, an example in which a replaceable memory card is used as the coded image storage means has been described, but a fixed or semi-fixed (socket attachment / detachment) semiconductor memory or other storage is used depending on the application. Means may be used. Further, in addition to the embodiment of FIG. 1, the liquid crystal display 1 is independent, a lid for covering the display surface is provided, and the opening and closing of the lid is linked with the switch, so that a video is displayed instead of the photograph as the second embodiment. The video stand used can be configured. Furthermore, as a third embodiment, this device is incorporated into an automatic vending device or various automatic service providing devices,
The video-related parts of this device are activated in conjunction with the operation and operation of the push buttons of those devices, and by controlling the reading of the storage medium, short-time video display is repeated once or a predetermined number of times or for a predetermined time. By doing so, the operability and functions of these automatic vending devices and various automatic service providing devices can be improved.

[0020]

As described above, according to the short-time image display device of the present invention, it is possible to easily handle a short-time image, and it is possible to configure the device in a small size so as to be compatible with other devices. The combination is easy and the application can be expanded.

According to the second aspect of the invention, in particular, it is possible to repeatedly display the video for a short time according to the application.

According to the third aspect of the invention, in particular, it is possible to display a short time image for a predetermined time according to the application.

Further, according to the invention of claim 4, in particular, by exchanging the storage medium, various short-time images can be displayed, and the image contents can be managed for each storage medium. -The time required for display can be shortened.

Further, the invention of claim 5 is suitable for an apparatus or the like which is excellent in maintainability and frequently used because there is no movable part for reading the storage medium.

Further, according to the invention of claim 6, it can be used particularly in combination with a wide variety of devices, and the operability and the function of these devices can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a music box device having a video function according to an embodiment of the present invention.

FIG. 2 is a diagram showing an example of storing a video signal in the memory card in the above embodiment.

[Explanation of symbols]

 1 ... Liquid crystal display 2 ... Switch of music box device 3 ... Music box music player 4 ... Memory card 5 ... Memory card reading unit 6 ... Memory card reading control unit 7 ... Video decoder

Claims (6)

[Claims] 1. A coded video storage means for storing coded video of information-compressed short-time video, a storage signal reading means for reading the coded video stored in the coded video storage means, and the read signal. A short-time video display device comprising: a video decoding means for sequentially decoding encoded video; and a means for displaying the decoded video. 2. The accumulated signal reading means repeatedly reads the coded video.
The short-time video display device described. 3. The short-time image display apparatus according to claim 2, further comprising means for determining a display time and stopping the accumulation reading means to stop the display when the period has elapsed. 4. The short-time video display apparatus according to claim 1, wherein a replaceable storage medium is used as the coded video storage means. 5. The short-time image display device according to claim 1, wherein the encoded image storage means is a semiconductor memory. 6. A means for combining the short-time video display device according to claim 1 with another device, and for activating the accumulated signal reading means and interlocking with a specific operation or operation of the other device to activate a video display operation. A short-time image display device comprising: