JPH0648860B2 - Image display device - Google Patents

Description

The present invention relates to an image display device that outputs image information using a recording medium that records a plurality of still images.

A device has been proposed in which a plurality of (for example, about 100) still images are recorded as digital information on a disk-shaped recording medium, and these are reproduced and displayed on a monitor (for example, Japanese Patent Publication No. 63-58435). . In such an image display device, as described in the specification of the publication, since digital still image information is recorded by time extension, it is possible to reproduce a still image for one field by about 0.
It takes 4 seconds and 1.6 seconds for a color image with 4 fields as one unit. Therefore, it takes an extremely large amount of time to search for a necessary picture in a sequential manner. Although it is possible to select the necessary image information by adding a character index, it is not possible to fully express the contents of the picture with characters, and at most there is a limit to adding a title format index. It takes a lot of time to produce. Also, when searching by character index, it is difficult to create an identifiable index if there are many still images that are similar to each other, and the actual contents of the image cannot be known unless actually reproduced. Met.

The present invention is to solve the above problems, and a plurality of still images are recorded from a recording medium in the form of digital information having a time axis extended from a normal video signal,
In the image display device of the present invention in which one still image to be reproduced is designated to obtain a desired still image display, in order to display a plurality of still images on one index screen divided into segments. The recording medium includes reduced still image information corresponding to each still image recorded in a specific recording area.

A reproducing device for reproducing still image information and reduced still image information from the recording medium, and a reproduction signal of the reduced still image information are written and read out at a speed of a normal time axis to generate a video signal forming the index screen. An index memory to be obtained and an image memory to obtain a still image video signal by writing the reproduction output of the still image information and reading it at a speed on the normal time axis are provided.

By specifying to the player the number of each segment of the index screen displayed based on the output of the index memory, the still image information corresponding to the selected reduced still image is reproduced from the recording medium, and the image memory The desired still image display is obtained by writing and reading.

With this configuration, it is possible to search the recorded contents in the recording medium in an extremely short time, and since the still image is recorded by the digital signal, it takes a long time to reproduce one still image. Even if it is difficult to search for a short time, it is possible to display a list of recorded contents on the index screen, and the time required to find and display a required still image is greatly shortened.

Embodiments of the present invention will be described below with reference to the drawings.

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

The input video signal a is converted into a digital signal by the A / D converter 1, and one frame of still image information is stored in the image memory 2
Written in. The read output of the memory 2 is supplied to and recorded in the disc recording / reproducing device 3. By repeating this recording operation, a plurality of pieces of still image information is recorded on the disc. The reading speed of the image memory 2 is changed to match the rotation speed of the disc.

The output of the image memory 2 is also given to the reduction device 4.
The reduction device 4 has a function of reducing an image to 14,
For example, three out of four scan lines are thinned out and A on the scan line is
Three of four sampling points at the time of / D conversion are thinned out. The output of the reduction device 4 is sent to the disc recording / reproducing device 3 and recorded in this predetermined portion, that is, an area for index recording.

At the time of reproduction, first, the reproduction output of the index recording area of the disc recording / reproducing device 3 is sent to the index memory 5, and one piece of index image information is stored. The output of the index memory 5 is sent to the D / A converter 7 via the switch 6, where it is converted into an analog video signal and then sent to the monitor TV.

As a result, on the screen 9 of the monitor TV, the reduced still image is indexed in each region of each segment (1 to 16) divided into a plurality (for example, 16) as shown in the screen front view of FIG. Is displayed as. In the area of each segment, reference numbers (1 to 16) are displayed so as to be superimposed on the image or written on a transparent plate on the screen.

In this way, necessary information can be selected by looking at the index screen 9 shown in FIG. Necessary still image information is reproduced by instructing the disc recording / reproducing device 3 of the index reference number, and the image memory 8
Memorized in.

The output of the image memory 8 is given to the monitor TV via the switch 6 and the D / A converter 7, and the selected still image is displayed.

As described above, the present invention searches for a target still image in an extremely short time when a recording medium on which a still image is recorded as digital information is reproduced by a reproducing device in which the relative speed of the head and the medium is slow. A reduced still image is recorded on the recording medium so that it can be displayed and is displayed on a segmented index screen. Therefore, if the index image is reproduced and displayed on the screen, the contents of a plurality of still images can be listed to quickly find the necessary one, and a simple operation can be selected without error. Therefore, the target still image can be reproduced and displayed in a short time. Moreover, since it is a reduced image, the original image is represented almost faithfully, and even if the image content is complicated, it can be accurately searched. Therefore, the digital still image retrieval and display system can be made inexpensive and practical.

[Brief description of drawings]

FIG. 1 is a block diagram of an image display device showing an embodiment of the present invention, and FIG. 2 is a front view of an index screen. In the reference numerals used in the drawings, 3 ... disk recording / reproducing device 4 ... reduction device 5 ... index memory 8 ... image memory 9 ... index screen.

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H04N 5/92 D 4227-5C

Claims (1)

[Claims] 1. A desired still image by designating one still image to be reproduced from a recording medium in which a plurality of still images are recorded in the form of digital information having a time axis extended from a regular video signal. In order to display a plurality of still images on a single segmented index screen in an image display device capable of displaying images, reduced still image information corresponding to each still image is recorded in a specific recording area. The above-mentioned recording medium, a reproducing device for reproducing still image information and reduced still image information from the recording medium, and a reproduction output of the reduced still image information is written and read out at a speed of a normal time axis. An index memory that obtains a video signal that forms an index screen, and the playback output of the above-mentioned still image information are written and read at the speed of the normal time axis, so that the still image Image memory for obtaining the image data, and by specifying to the player the number of each segment of the index screen displayed based on the output of the index memory, the still image information corresponding to the selected reduced still image is displayed. An image display device characterized by reproducing from the recording medium, writing to and reading from the image memory to obtain a desired still image display.