JPH03273363A - Content list display system for moving image - Google Patents

Abstract

PURPOSE:To juxtapose and display plural pictures without requiring labor by automatically selecting the picture out of a moving image for each fixed time interval or fixed frame number, storing the selected picture into information and displaying the list of those pictures. CONSTITUTION:When the output of a moving image reproducing means 101 is inputted to a picture information storing means 103, the picture is stored when receiving a trigger signal from a picture selecting means 102 for each constant time interval. In such a way, the sampled picture 201 is displayed at a display means 104. When this display means 104 is not so large in comparison with the picture of the moving image, a picture reducing means is provided between the reproducing means 101 and the display means 104. On the other hand, a frame number is outputted from the picture selecting means 102 to the reproducing means 101 and only the picture required for sampling is reproduced. Based on the memory request of the selecting means 102, the picture information storing means 103 stores the picture information and the selecting means 102 increases the frame number to be outputted only for a scheduled number. By repeating this operation, the pictures are stored in the storing means 103 at the constant time intervals and all the moving image is not reproduced. Therefore, the time required for storage is further shortened.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a method for displaying a list of contents of moving images of a display device that displays and searches moving images, and in particular, it is possible to list the contents of moving WJ images. This invention relates to a method for displaying a list of contents of moving images.

(Conventional technology) Video images have not only a two-dimensional spread but also a time axis, so it is difficult to view the contents at a glance. Conventionally, to understand the contents of a video, it is necessary to view the video along the time axis. Methods such as fast-forward playback are also used to shorten the time taken, but basically the video is played back in order and then watched by a human being. become. Additionally, this method relies solely on human memory for the content of the captured moving image, so it also has the disadvantage of being easily confused.

For the purpose of making a note of the contents that have been viewed once and listing the contents of a moving image, there is a method of displaying a list of moving image contents as shown in FIG. Hereinafter, a conventional moving image content list display technique will be explained using FIG. First, a moving image output from the moving image reproduction means 801 is displayed on the display means 803.

While viewing the displayed moving images, if a screen that is not to be stored does not appear, a request to store the screen is transmitted to the screen information storage means 802 by pressing a button or the like. Then, the screen information storage means 802 receives and stores the screen from the moving image reproduction device Pi 801. By repeating this process from the beginning to the end of the moving image and displaying a plurality of screens thus stored on the display hand Pi 803, the contents of the moving image can be viewed at a glance.

(Problem to be solved by the invention) However, even with the above method, although it is possible to view the moving images at a glance, there is still a need for humans to view the moving images from beginning to end. However, even if fast-forward playback is used, it is very time-consuming.

An object of the present invention is to provide a method for displaying a list of moving image contents, which displays a list of moving image contents without much human intervention.

(Means for Solving the Problems) The first invention is a display device for displaying and searching moving images! In the method for displaying a list of moving image contents, screens are read out and stored from the moving image at regular time intervals or every fixed number of frames, and a plurality of the stored screens are displayed side by side on a display means.

A second invention is a method for displaying a list of contents of moving images in a display device that displays and searches moving images, in which a difference between adjacent screens is calculated, and screens in which the difference is greater than or equal to a predetermined value are stored. Then, a plurality of stored screens are displayed side by side on a display device.

(Operation) In the first invention, a screen is automatically selected from among moving images at fixed time intervals or every fixed number of frames by a timer or the like, and displayed screen information is stored in a storage means. Furthermore, the stored images are displayed on the display means in a viewable form. As a result, the contents of a moving image can be viewed on the screen without much manual effort.

In the second invention, two adjacent screens of moving images are sequentially compared,
Screen information of a screen whose difference is larger than a predetermined value is stored in a storage means. When this operation is repeated from the beginning to the end of the moving image, a plurality of screens with greatly changed scenes are stored in the storage means. Thereafter, the stored screens are displayed on the display means in a viewable form. As a result, the first screen of a scene of a moving image can be viewed at a glance on the display means without much manual effort.

(Example) Hereinafter, the first invention and the second invention will be described with reference to the drawings.

First, the first invention will be explained in detail.

FIG. 1 is a block diagram showing the configuration of an embodiment of a moving image content list display method according to the first invention. First, its constituent elements will be explained.

Reference numeral 101 denotes a moving image reproducing means for reproducing moving images. It consists of a moving image playback device and the like.

102 is a screen storage request signal 102 at fixed time intervals.
1, and the screen selection means 10
2 consists of, for example, a timer. Furthermore, instead of the timer, a moving image reproducing counter provided in the moving image reproducing means 101 may be used.

103 is a storage request signal 102 from the screen selection means 102;
1 is screen information storage means for storing the screen output from the moving image reproduction means 1o1. If the amount of screen information to be stored is small, a memory is used as the screen information storage means 103, but if the amount of screen information to be stored is large, an auxiliary storage device such as a hard disk storage device may be used.

104 is a display means for displaying a list of screens stored in the screen information storage means 103, and the display means 104 is comprised of a display device such as a CRT or a liquid crystal display.

Next, the operation of the first invention will be explained based on the embodiment shown in FIG.

First, when a command to display a list of moving images is given to the apparatus according to this embodiment, moving images are pressed from the moving image reproducing means 101 through the data line 1011. The output of the moving image is input to the screen information storage means 103, and the screen information storage means 103 stores a part of the inputted moving images, and the other inputted moving images are stored in the screen information storage means 103. 103.

A trigger signal for storing the screen is sent to the screen selection means 10.
The 0-screen information storage means 103, which is sent from 2 to the screen information storage means 103 at regular intervals, stores the screen sent from the moving image reproduction means 101 when the trigger signal is received. When the above operation is repeated from the beginning to the end of the moving image, the screen information storage means 103 stores screens sampled from the moving image at regular intervals.

Next, the screens sampled as described above are simultaneously displayed on the display means 104. FIG. 2 is a diagram schematically showing how the plurality of sampled screens 201 are displayed on the display means 104. Here, the display means 1
04 is not so large that it can fit on the moving image screen, a screen reduction means 301 is placed between the moving image reproduction means 101 and the display means 104, as shown in FIG. The position may be placed between the moving image reproduction means 101 and the screen information storage means 103 as shown in FIG.
As shown in Figure (b), between the screen + W information storage means 103 and the display means 104! Even if it's there, it won't grow.

Please note that the playback speed of video images is not limited to the normal playback speed.
It is also possible to perform fast-forward playback. This increases the processing speed of the present invention.

Further, in a case where the moving image reproducing means 101 can directly specify the reproducing screen using a frame number or the like, as in the case of an optical disc, a second embodiment having a configuration as shown in FIG. 4 can be considered. That is, in the first embodiment shown in FIG. 1, moving images are continuously played back in the moving image playback means 101, whereas in the second embodiment shown in FIG. From the video image reproducing means 101
The frame number to be reproduced is output through the signal line 1022 to reproduce only the screen necessary for sampling. The screen with the frame number is sent from the moving image reproduction means 101 to the screen information storage means 103, and is stored in response to a storage request signal 1021 as a cue. Thereafter, the frame number output by the screen selection means 102 is increased by a predetermined number.

Thereafter, if the above procedure is repeated, screens at fixed time intervals will be stored in the screen information storage means 103 as in the first embodiment, and since the moving images are not all played back, the time required for storage will be is much shorter than in the first embodiment. Note that the means for increasing the frame number by a predetermined number can be easily constructed from a counter 502 and a constant storage means 501, as shown in FIG. This is done by adding the contents to counter 502.

In the above embodiment, only the image is stored in the screen information storage means 103, but the screen information storage means 103 also stores information such as the time until the screen appears, the frame number of the screen, etc. It is also possible to do so. By doing this, you can play back a moving image from a scene selected from the list displayed on the screen.

Next, an embodiment of the second invention will be described.

FIG. 6 is a professional drawing showing the configuration of an embodiment of the second invention. First, the constituent elements will be explained. Since the moving image reproduction means 101, the screen information storage means 103, and the display means 104 are the same as those in the first invention, their explanations will be omitted.

601 is a storage request signal 6 for the screen where the scene has changed.
The scene change detection means 601 outputs 012, and the scene change detection means 601 is composed of interframe prediction means known as a part of moving image compression means. The inter-frame prediction means subtracts a predicted value predicted using data from one frame before from image data regarding a pixel in an X-Y two-dimensional image plane, and generates a difference. An embodiment of the scene change detection means 601 will be described based on FIG. 7. It is now assumed that the screen of the i-th frame is being sent from the moving image reproduction means 101 to the scene change detection means 601 through the data line 6011. 701 is a frame memory, and the frame memory 701 stores the screen of the (1-1)th frame. The difference generation means 702 receives the i-th signal input from the moving image reproduction means 101.
The difference for each pixel is calculated using the screen of the frame and the screen of the (i-1)th frame inputted from the frame memory 701, and the absolute values are summed to trigger output means 703.
send to Trigger output means 703 compares the sent difference value with a pre-stored reference value, and outputs a trigger signal if it exceeds the reference value. Note that in the above embodiment, inter-frame prediction means is used as the scene change detection means 601, but a motion-guaranteed inter-frame prediction means or the like may be used.

Next, the operation of the present invention using the above means will be explained.

First, when a command to display a list of moving images is given to the apparatus according to this embodiment, moving images are output from the moving image reproducing means 101 through the data line 1011. The output of the moving image is input to the screen information storage means 103, and a part of the input moving image is stored in the screen information storage means 103. When the scene changes significantly, the trigger signal for storing the screen is sent from the scene change detection means 601 to the image il! ili
One-screen information storage means 10 sent to information storage Senwa 103
3 stores the screen sent from the moving image reproducing means 101 when the trigger signal is received. When the above operation is repeated from the beginning to the end of the moving image, the screen information storage means 103 sequentially stores the screens when the scene changes significantly in the moving image.

Next, the screen stored as described above is simultaneously displayed on the display means 1.
Display on 04. The display method and the method of using the screen reduction means 301 are the same as in the first invention, and the displayed image is as shown in FIG.

Also, similar to the first invention, the screen information storage means 103 can also store the time until the screen appears or the frame number of the screen.

(Effects of the Invention) As described above, according to the moving image content list display device of the first invention, it is possible to automatically sample screens at fixed time intervals and view the sampled screens on the display device. . Also,! 11. If the image reproducing means is of a type that can call up a screen by frame number, the time for memorizing the screen can be greatly saved, as shown in the second embodiment. In addition, even if the content list display screen is divided into several pages, there is sufficient time to perform sampling after the command to display the display screen is issued, so there is no need to memorize the entire sampling screen. Another advantage is that it requires less memory capacity to store screen images.

According to the moving image content list display device of the second aspect of the invention, it is possible to automatically store screens with changed scenes and view the stored screens on the display device.

As a result, you don't have to watch the video from beginning to end! II The content of the image can be understood, and the time required to understand the content of the moving image can be greatly saved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the first invention, FIG. 2 is a diagram schematically showing a probe on which a sampled screen is displayed on a display device, and FIG. 3 (a> A diagram showing an example of the arrangement of the screen reduction means, FIG. 3(b) is a diagram showing another example of the arrangement of the screen reduction means, and FIG. 4 is a block diagram showing the configuration of another embodiment of the first invention. , FIG. 5 is a diagram showing an embodiment of means for increasing the frame number by a fixed amount, and FIG.
FIG. 7 is a block diagram showing the configuration of an embodiment of the second invention, FIG. 7 is a block diagram showing the configuration of an embodiment of the scene change detection means, and FIG. 8 is a diagram for explaining the conventional technology. be. 101...Moving image playback means, 102...Screen selection means, 103...Screen information storage means, 104...Display means, 601...Scene change detection means. Figure 1 101? Figure 2 Figure 4 Figure 5 02 Figure S (a) (1)) Figure 8 01 ζ / 03

Claims (2)

[Claims] (1) In a method for displaying a list of contents of moving images in a display device that displays and searches moving images, screens are read and stored from the moving image at fixed time intervals or fixed number of frames, and the stored screens are displayed. A method for displaying a list of contents of moving images characterized by displaying a plurality of images side by side on a means. (2) In a method for displaying a list of contents of moving images in a display device that displays and searches moving images, the difference between adjacent screens is calculated, and the screens for which the difference is greater than or equal to a predetermined value are stored and stored. A video content list display method characterized by displaying a plurality of displayed screens side by side on a display device.