JPH02199499A - Multiple moving image display device - Google Patents

Abstract

PURPOSE:To improve the interface between a user and plural moving images and to lighten the load on an operator by connecting moving image units in many serial stages and displaying plural moving images. CONSTITUTION:A CPU 40 draws a display specification color area on a graphic memory 41, different display specification color values are set in display specification color registers in units 42 - 44, and characters and graphic images which are drawn on the memory 41 are inputted to the personal computer graphic input terminals (terminals C) 33 of the moving image units while a moving image of the NTSC system is inputted through NTSC #i input terminals. A comparator 27, on the other hand, compares the value of a display specification color register with the values of the characters and graphic images and only when an area which is painted out with display specification color is scanned, the output of a multiplexer 26 is switched to the side of a frame memory 25, but when not, the output is switched to a character and graphic image side. Therefore, a mixed image of characters, graphics, and natural moving images is sent out to a multistage connection output terminal (terminal E) 35.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus, such as a computer-based moving image search system, that displays a mixture of natural moving images, text, and graphics images.

BACKGROUND ART FIG. 3 shows a block diagram of a conventional image display device. In FIG. 3, 1 is a CPU.

2 is an RGB separation circuit, 3 is an A/D converter, 4 is a synchronization separation circuit, 5 is a master clock generation circuit, 6 is a natural image memory that holds a natural image, 7 is a graphic memory, and 8 is a device that reads data from the graphic memory. a display circuit; 9 a display designation color register for setting a color to display a natural image among the characters and colors used in the graphic image held in the graphic memory; 11 is a D/A converter; 12 is a comparator that compares the values of the natural image memory and the display designated color register; 13 is a display unit that displays a mixed image obtained through the D/A converter; It is a display device that

The operation of this conventional example configured as described above will be explained. A designated display color area is drawn in the graphic memory 7 by the CPU using the designated display color. A display designation color value indicating the desired color of the natural image is set in the display designation color register 9 by the CPU. Characters and graphic images recorded in the graphic memory 7 by the CPUI and natural images recorded in the natural image memory 6 are read out in synchronization with the master scan of the display circuit 8, and the graphic data is sent to the display specified color register 9 in the comparator 12. The value read out from the graphic memory 7 is compared with the value read out from the graphic memory 7, and only when the area filled with the specified display color is scanned, the output of the switch 10 is switched to the natural image memory 6 side.
0 to the display device 13 to display a mixed screen of characters, graphics, and natural images.

Problems to be Solved by the Invention However, with the above configuration, although it is possible to mix characters and graphics with natural images, only one moving image can be displayed on the display screen.

In view of this, an object of the present device is to provide a display device that improves the interface between a user and a plurality of moving images by having a configuration that can display a plurality of moving images.

Means for Solving the Problems The present invention comprises an image input section for processing input natural moving images, a computer control section for processing commands from a computer, a graphics memory section for holding characters and graphics, and a computer control section for processing commands from the image input section. It consists of a part that mixes the signal and the signal from the graphics memory unit, and when reading out an area filled with a display designation color specified in advance by the computer control unit while reading the graphic memory, the mixing is performed. An apparatus comprising means for outputting a natural moving image from a region and displaying characters or graphics images when reading out other regions, the image input section, the computer control section, and the mixing section. The multi-video display device is characterized in that the frame memory section is a video unit, and means for connecting the video units in series in multiple stages is provided.

Effect of the present invention With the above-described configuration, the output of the previous stage, that is, the mixed image of natural moving images, characters, and graphics is input,
A new natural moving image is added and becomes the next input image,
Multiple video images can be displayed.

Embodiment FIG. 1 shows the i-th stage (i=1.2.
. . . , n and below). FIG. 2 is an example of multi-stage connection of the moving image units. In FIG. 1, reference numeral 20 denotes an NTSC#i input terminal (terminal A in FIG.
), 21 is an RGB separation circuit (#i), 22 is an A/D converter (#1), 23 is a synchronization separation circuit (#i), 24 is a master blackouter generation circuit, and 25 is a circuit that generates moving images alternately in each field. Frame memory (#i) consisting of field memory for writing and field memory for reading, 2
6 is a multiplexer (#i), 27 is a comparator (#i)
i), 28 is an address decoder (#i), 29 is a register clock generation circuit (#i), 30 is a display specification color register (#i), 31 is another register (#i), 32
is the multi-stage connection input/terminal (#i) (terminal B in Figure 2) that receives the output of the previous stage, 33 is the PC graphics input terminal (#i) (terminal C in Figure 2), and 34 is the PC path. Terminal (#i) (terminal D in FIG. 2), 35 is a multi-stage connection output terminal connected to the multi-stage input terminal of the next-stage moving image unit. In FIG. 2, 40 is the CPU 141 is the graphic memo 1c, 42, 43, and 44 are the video units;
45 is a D/A converter, 46 is a display device, 47.48
．． 49 is an input terminal for the NTSC signal.

The operation of this embodiment configured as above will be explained.

[1 CPU 40 draws a designated display color area in the graphic memory 41 using the designated display color.

[Two CPUs 40 create a video unit (#1) 42, a video unit (#2) 43, ... a video unit)
n) 44, display specified color register (#1) 9, display specified color register (#2) 9, ...display specified color register (
#n) In 9, set the display designation color values indicating the desired colors of the natural image to different values.

[3] Ground the multistage input terminal.

[4] The characters and graphic images written in the graphic memory 41 by the CPU 40 are stored in the moving image unit (#1
) is input to the PC graphics input terminal (#1) 33. In addition, video unit (#1) 42 NTSC
An NTSC moving image is input via the #i input terminal.

On the other hand, the comparator (#1) 27 compares the value of the display specified color register (#1) 9 with the value of the character or graphic image, and only when the area filled with the display specified color is scanned, the multiplexer (#1) 1) Switch the output of 26 to the frame memory (#1) 25 side, and switch the other outputs to the text and graphics image side. In this way, a mixed image of text, graphics, and natural moving images is sent to the multi-stage connection output terminal (#1) 35.

[5] If it is 1f-n, connect the multistage connection output terminal to the next stage multistage connection input terminal, set i to i+1, and perform [4].

If i=n, the output of the moving image unit (#n) is switched from a digital signal to an analog signal by the D/A converter 45 and sent to the display device 46.

As described above, according to this embodiment, by providing a moving image unit, it is possible to display a plurality of moving images through multi-stage connection.

As described in detail, according to the present invention, it is possible to display a plurality of moving images on one display system, it is possible to improve the interface between the user and the plurality of moving images, and it is possible to display multiple moving images in multiple states. The work burden on workers involved in monitoring changes can be greatly reduced, and its practical effects are extremely large.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of an i-th stage video unit in an embodiment of the present invention, FIG. 2 is a diagram showing an example of multi-stage connection of the video units, and FIG. 3 is a configuration diagram of a conventional image display device. . 20...NT newly mixed in the i-th stage video unit
NTSC#i input terminal (terminal A in Figure 2) which is an input terminal for the SC input signal, 21...RGB separation circuit,
22...A/D converter, 23...Synchronization separation circuit, 2
4... Master clock generation circuit, 25... Frame memory consisting of field memory to which moving images are written alternately in each field unit and field memory to read out, 2.
6...Multiplexer, 27...Comparator, 28...
・Address decoder, 29...Register clock generation circuit, 30...Display specification color register (#iL 31...
Other registers, 32...Multi-stage connection input terminal that receives the output of the previous stage (terminal B in Figure 2), 33...PC graphics input terminal (terminal C in Figure 2), 34...PC bus terminal ( Terminal D) in FIG. 2, 35... Multi-stage connection output terminal connected to the multi-stage input terminal of the next-stage moving image unit.

Claims (1)

[Claims] An image input section that inputs natural moving images, a computer control section that processes commands from the computer, a graphics memory section that holds characters and graphics, and mixes signals from the image input section and signals from the graphics memory section. and when reading out an area filled in using a designated display color specified in advance by the computer control unit while reading out the graphic memory, the output from the mixing part is treated as a natural moving image. ,
An apparatus comprising means for displaying characters and graphics images when reading other areas, the image input section, the computer control section, the mixing section and the frame memory section being a moving image unit, A multi-video display device comprising means for serially connecting the video units in multiple stages.