JPS6365484A - Digital image display device - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This description relates to a digital image display device that facilitates pointing in the process of displaying digitized image data.

[Conventional technology]

Fig. 3 shows a conventional digital image display device. A display interface to create.

(8) is an image input/output interface for displaying an image based on the image display signal outputted from the display interface (7); display #(9) is an image input/output interface for inputting/outputting image data to/from the image memory (1); α0 is a control signal creation unit that creates input/output or processing operation timings for this image input/output interface (9), the image memory (1), and display interface (7) and controls these hardware; It is equipped with various general-purpose arithmetic processing functions, information storage and input/output functions, and includes the image memory (11) and image input/output interface (9).
Q3 is a processor that inputs and outputs image data and control information to and from the control signal generation unit 00 and manages the entire operation of the device. This is a pointing device for indicating t.

FIG. 4 is a diagram showing a conventional pointing display processing flow, and the operation will be explained in conjunction with the configuration of FIG. 3.

Display of digital images.

First, perform pointing device operation α4, and the operation is completed? (g) If not, point device @
Pointing position data (il) for instructing the pointing position from is transferred to the processor ■ to calculate the pointing position αfjL for the display position of the two images, image memory (1), image input/output interface (9), control signal generation unit 00 By outputting the control information (h) to the image memo (January 1), the save image is written to the old position α9, the image at the pointing position is saved from the 1 image memory (1), and the pointing position is transferred to the image memory (1). Shape image writing Qp is performed, and the image data (a) from the 1-image memory (1) is converted into an image display signal (g) by the display interface (7) and displayed on the display (8).

Repeat the steps from pointing device operation α4 above and the operation is complete? If (to).

The display of the digital image by pointing processing ends.

[Problem that the invention seeks to solve]

Since the conventional digital image display device is configured as described above, it is necessary to read and write the pointing position image to two image memories, and the response time of image display when operating the pointing device is limited to this time. There is a problem that the processing time is limited by the sum of the reading and writing times, and that unprocessed image data does not remain in the image memory.

This invention was made in order to solve the above-mentioned problems, and it is a digital device that can shorten the response time of image display when operating a pointing device, and can also store unprocessed image data in an image memory. The purpose is to improve image display devices.

[Means for solving problems]

A digital image display device according to the present invention.

Pointing shape R for storing and displaying a pointing shape image according to instructions from the pointing device
It is equipped with an OM and I'LOM address generation section, a position detection section, a position register, and a synthesis section that synthesizes the image data output from one image memory and the pointing data output from the pointing shape ROM. be.

[Effect]

In the present invention, pointing data is stored in a pointing shape ROM, combined with an image memory in two combining sections, and displayed on a display. Therefore, in the configuration of the present invention, pointing data does not use one image memory, so the image memory of the pointing display part can be saved in the pointing display processing, and can be displayed in response to the operation of the pointing device. .

〔Example〕

FIG. 1 shows an embodiment of the present invention. In Figure 1, (1) is an image memory that stores digitized image data, and (2+ is a pointing shape that outputs pointing data in the process of displaying image data stored in this image memo January 1). ROM = (3) is R that creates the address of this pointing-shaped ROM (2)
, OM address creation section.

(4) is a position detection unit that detects and controls the pointing position relative to the display position of this ROM address creation unit (3); (5) is a position register that sets the pointing position for this position detection unit (4); 6) is a synthesis unit that synthesizes the image data output from the image memo January 1) and the pointing data output from the pointing shape ROM (21), and (7) is the synthesis unit that is output from this synthesis unit (6). A display interface (8) that creates an image display signal from image synthesis data is a display interface that creates an image display signal from image synthesis data.
A display that displays an image based on an image display signal output from an interface (7), (9) an image input/output interface for inputting and outputting image data to and from the image memory (1), and GO being this image input/output interface. (9) and the input/output or processing operation timings of the image memory (1), ROM address creation unit (3), position detection unit (4), and display interface (7) are created and these hardware The control signal generation unit (6) that performs control is equipped with various general-purpose arithmetic processing functions, information storage, and input/output functions.

Above image memory (1) and position register (5) 9 synthesis unit (6) I image input/output interface (9>, 'ff1
A processor that inputs and outputs image data and control information to and from the lJ control signal generator aO, and controls and manages the overall operation of the device;
Q3 is a pointing device used by a person to indicate the pointing position to this processor (2).

FIG. 2 is a diagram showing the pointing display processing flow of the present invention, and the operation will be explained in conjunction with the configuration of FIG. 1. The display of image data by pointing processing starts from the processor (6) to the position register (5) and the compositing unit (
6) Outputs the control information (hl) and turns on the 1 synthesis section,
Pointing device operation u4 completed?
(To) If not, transfer the pointing position data (j) for instructing the pointing position from the pointing device @ to the processor 0, calculate the pointing position αG for the display position of 1 image, and calculate the 2nd position register (5
) by outputting the control information (h) to the position register αη, and the control signal (
+) and the pointing position address (c) from the 1 position register (5), the 1 position detection unit (4) detects the pointing position relative to the display position, and the full address creation unit (3)
The address control signal (d) is output to the pointing shape U M (2), and the ROM address (c) from the ROM address generation section (3) is combined with the pointing data (b) to the synthesis section (6). This synthesis unit (6) synthesizes the image data (a) output from the above image memo (January 1) and the pointing data (b) output from the pointing shape ROM (2), and displays the The image synthesis data (f) is output to the interface (7), and the display interface (7) converts the image synthesis data (f) from the synthesis unit (6) into an image display signal (g), which is displayed on the display (8). do.

Repeat the steps from pointing device operation α4 above and the operation is complete? If (to).

Position register (5) and synthesis unit (6) from processor circle
The control information (h) is outputted to turn off (to) the first combining section, and the display of the digital image by pointing processing is ended.

〔effect〕

As described above, according to the present invention, in displaying the pointing position, by using the pointing shape ROM, the ROM address generation section, the position detection section, the position register, and the synthesis section, the pointing position can be displayed immediately in response to an instruction from the pointing device. to display it on the display, point and
This has the effect of shortening the response time from the device and saving unprocessed image data.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a digital image display device according to an embodiment of the present invention, FIG. 2 is a pointing display processing flow diagram of the present invention, FIG. 3 is a block diagram of a conventional digital image display device, and FIG. 4 is a block diagram of a conventional digital image display device. It is a conventional pointing display processing flow diagram. In the figure, (1) is an image memory, (2) is a pointing-shaped ROM, and +31 is a ROM address generation unit. (4) is a position detection unit, (5) is a position register, (6) is a synthesis unit, (7) is a display interface, (8)
) is a display, and (9) is an image input/output interface. (To) is the control signal generation unit, Hit is the processor, U is the pointing device, 03 is the synthesis unit on, α4 is the pointing device operation, (I119 is finished?, (To) is the position calculation, α7) is the position register Set, (l is compositing unit off, α9 is writing a saved image at the old position, (1) is saving an image at the pointer position, (2) is writing a pointer shape image. Note that the same symbols in Figure 1 are the same or equivalent. Show parts.

Claims (1)

[Claims] An image memory that stores digitized image data, a pointing-shaped ROM that outputs pointing data in the process of displaying the image data stored in this image memory, and a ROM address that creates an address for this pointing-shaped ROM. a creation section, a position detection section that detects and controls the pointing position relative to the display position of the ROM address creation section, a position register that sets the pointing position for this position detection section, and image data output from the image memory. and pointing shape R
A synthesis section that synthesizes pointing data output from the OM, a display interface that creates an image display signal from the image synthesis data output from this synthesis section, and an image display signal that is output from this display interface. a display for displaying images; an image input/output interface that inputs and outputs image data to and from the image memory; a control signal generator that performs hardware control of the image memory and display interface, a ROM address generator, and a position detector; A digital image display device comprising: a processor that controls and manages each of the above components; and a pointing device that allows a person to instruct the processor about a pointing position.