JPS6192092A - Video information display device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a device that electronically superimposes multiple pieces of color video information and compares and references them, increasing the amount of frame memory that stores video information. The present invention relates to a video information display device that is suitable for realizing superimposition of color video without overlapping.

[Background of the invention]

2. Description of the Related Art Color video media, such as video tapes, are on sale for use in education and sports training, and include model movements (eg, golf swings, etc.).

On the other hand, with the development of video cameras and the like, individuals have become able to freely create video information. In such a situation, there is a need to improve the efficiency of education and training by not only passively viewing the above-mentioned model video, but also comparing and referencing video information shot by a single individual. occurs.

In order to meet such needs, a method of superimposing multiple pieces of video information is effective. When superimposing image information, there are the following two problems.

i) When multiple pieces of video information to be superimposed are both moving images, it is a circuit to control the progress of both so that the video contents are synchronized.

ii) To process multiple color images, each R,G.

A plurality of sets of frame memories corresponding to B are required, and their capacity becomes enormous.

Regarding these conventional techniques, for example, "1 Image Processing and its Application": Part 1 [Object of the Invention] The object of the present invention is to eliminate the above-mentioned drawbacks and to easily synchronize multiple pieces of video information. It is an object of the present invention to provide a device that can perform the above-mentioned functions and prevent an increase in the amount of frame memory.

[Summary of the invention]

In order to achieve the above object, the present invention has the following features.

i) A function to convert one side's video information to be compared/contrasted into a still image at any time, and it) convert either the still image created in i) above or the video information of the other side to be compared into a monochrome image. It has the function of converting into From i) above, easy synchronization is possible,
Furthermore, the amount of frame memory can be reduced by the above ji).

[Embodiments of the invention]

Hereinafter, the present invention will be explained in detail using examples.

FIG. 1 shows the configuration of a video information display device according to the present invention.

A conventional color video display device takes in color video data sent from the video source 1 and displays red (R).

Color frame memory 1 for each color layer of green (G) and blue (B)
Temporarily store it in 0. Add this data to color palette 20
A color video signal generator 30 generates a video signal, and this signal drives a display 40 such as a cathode ray tube.

In addition to this conventional device, the video information display device according to the present invention includes a data converter 50 that creates monochrome data based on RGB color signals. A monochrome frame memory 60 that stores this monochrome data. A monochrome video signal generator 70 generates a monochrome video signal based on this content. A video mixer 80 that combines and superimposes the monochrome video signal with the color video signal described above. It also includes a video control section 90 that centrally controls each of these parts.

The data converter 50 is a part that converts KGB color data into monochrome data, and the conversion method is, for example, as described in reference literature, a method in which the highest value of brightness among each RGB color is set as the brightness of a monochrome image. The configuration of the monochrome frame memory 60 is exactly the same as that of the color frame memory 10 for one color. The monochrome video signal generator 70 is a part that generates a drive signal for lighting the display 40 based on the output from the monochrome frame memory 60. The video mixer 80 is a part that combines a color video signal and a monochrome video signal so that the color video and monochrome video are displayed in a superimposed manner on the display 40.

Next, the operation of the video control section 90 that controls the above operations will be explained with reference to FIG. The video control unit 90 is activated by an external operation instruction such as a request from an operator,
First of all, data writing to the color frame memory 10 is prohibited. At this point, color frame memory 10
The above video data is converted to monochrome as a still image. Next, the color video data (all RGB) to become this still image is read out and transferred to the data converter 50. An address and a write signal are generated to write the video data converted into monochrome by the data converter 50 into the monochrome frame memory 6o. When all the data for one screen has been written to the monochrome frame memory 60, the prohibition of data writing to the color frame memory 10 is canceled and the state is returned to the state where a moving image can be displayed.Then, the color video signal generator 30 ,
and the monochrome video signal generator 70 are activated at the same time, and furthermore, the video mixer 80 is also activated. A signal indicating the superimposition state is transferred to the video mixer 8o. Here, the superimposed state refers to four types of first-order states.

(1) Replace part of the color video with a monochrome still image.

(2) Conversely, replacing part of a monochrome still image with a color image, (3) Transparently compositing a monochrome still image over part or all of a color image, (4) Conversely, a monochrome still image A color image is transparently composited onto part or all of the image.

The case where any of the data to be compared is converted to monochrome has been described above, but it is not limited to white or black, but it is also possible to set a specific color and convert to this.

〔Effect of the invention〕

According to the present invention, a plurality of pieces of video information can be superimposed and compared and contrasted. At this time, one of the data to be compared is converted into monochrome data and a still image if necessary, so that an increase in the amount of frame memory can be minimized and synchronization of comparison can be easily performed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a video information display device according to the present invention, and FIG. 2 is a flow chart showing processing contents of the video control section in the configuration of FIG. 1. 1...Video source, 10...Color frame memory, 2
0... Color palette, 30... Color video signal generator, 40... Display, 50... Data converter, 60... Monochrome frame memory, 70... Monochrome video signal generator, 80 ...Video mixer, 90・
...Video control section. Tomi ) figure

Claims (1)

[Claims] Video information comprising: a converter for converting a color video into a minochrome video; a video mixer for combining the monochrome video signal with the color video signal; and video control means for comprehensively and synchronously controlling each of these parts. Display device.