JP2003044031A - Image display device and image display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display device and an image display method capable of performing moving picture display by switching a image for every display or every two or more displays without burdening a microcomputer as an image display technique. SOLUTION: A display image control part 100 increases or decreases or cyclically repeats a display code within a certain time by counting vertical synchronizing signals, to read display data corresponding to the display code from ROM 101, and to display an image on a CRT 101.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to image control for displaying on a display device such as a CRT, and more particularly to image control for displaying a moving image by switching a plurality of images.

[0002]

2. Description of the Related Art Recently, in order to display various information such as channel, volume and menu display on a TV set or the like, a ROM in which all display data is recorded in advance based on control data from a microcomputer. Therefore, a technique of reading an image corresponding to the above various information and displaying it on a CRT or the like is used.

The configuration of a conventional image display device will be described below with reference to FIG. FIG. 9 is a block diagram showing the configuration of a conventional image display device. In FIG. 9, a conventional image display device includes a display image control unit 600 that controls an image to be displayed by control data sent from a microcomputer (not shown), and the display image control unit 60.
CR which is a display unit for displaying the image generated in 0.
And the display image control unit 6
00 is the display RAM 106 and the display position control circuit 108.
The display decoding circuit 107, the ROM address generation circuit 109, the ROM 110, and the display circuit 111.

The display RAM 106 stores control data written by a microcomputer. The control data has a display code indicating which image is displayed and what color the displayed image is. It is data including information such as a color code indicating that. Also,
The display position control circuit 108 includes display position data which is written from the microcomputer and which indicates at which position on the screen the image is displayed, and the display image control unit 600.
By the vertical synchronizing signal V, the horizontal synchronizing signal H, and the dot clock D input to the vertical direction position data s118, which is the vertical position of the scanning line on the display screen, and the display RAM 1.
The address of the control data read from the plurality of control data stored in 06 is the display RAM read address s1.
It is output as 08.

Further, the display decoding circuit 107 decodes the control data s106 read from the display RAM 106 by the display RAM read address s108 output from the display position control circuit 108 and includes it in the control data s106. The ROM address generation circuit 109 computes the display code s107 and the vertical position data s118 output from the display position control circuit 108 to correspond to the display code s107. ROM 11 in which the image to be stored is stored
The display data address s109 of 0 is generated.

The ROM 110 in which the display data of all the images to be displayed on the screen is stored in advance is the R
Display data address s from OM address generation circuit 109
The display circuit 111 receives the 109 and outputs the display data s110. The display circuit 111 outputs the RGB signal s11 synchronized with the dot clock D for each line from the display data s110.
1 is generated and output to the CRT 101.

The operation of displaying an image in the image display device having such a configuration will be described below. First, from the microcomputer to the display RAM 106,
Control data including a display code indicating which figure is displayed is written, and display position data indicating the position where the figure is displayed is written in the display position control circuit 108.

Next, in the display position control circuit 108,
By determining the start of the display screen from the vertical synchronizing signal V and the vertical position of the screen from the horizontal synchronizing signal H, vertical position data s118 of the scanning line of the screen is generated and output to the ROM address generating circuit 109. In addition, the horizontal position of the screen is determined from the dot clock D, and the display RAM read address s108 is displayed in accordance with the display position data according to the display position data.
It outputs to 06.

Then, the display RAM 106 which has received the display RAM read address signal s108 is controlled by the control data s.
106 is read out, and in the display decoding circuit 107,
The control data s106 is decoded, the display code s107 is extracted, and is output to the ROM address generation circuit 109.

Then, the display code s107 and the vertical position data s from the display position control circuit 108 described above.
The ROM 11 in which the figure to be displayed and the line to be scanned, which is the display position of the figure, are determined based on 118 and display data of a plurality of figures are stored in advance for each line.
A display data address s109 which is an address within 0 is generated.

The display data s110 displayed on the screen is read from the ROM 110 which has received the display data address s109, and the display circuit 111 generates the RGB signal s111 synchronized with the dot clock D and outputs it to the CRT 101.

As described above, in the conventional image display device, the display image control unit 60 is operated from the microcomputer.
If the display code of the figure to be displayed and the display position data for displaying the image are sent to 0, the display image control unit 600
Vertical sync signal V, horizontal sync signal H, and dot clock D
The RGB signal 111 synchronized with is output to the CRT 101, and the figure is displayed on the CRT 101.

As described above, as a method of making a displayed still image such as a figure or a picture appear to move, there is a method of switching the still image for each screen or for every plurality of screens.

The operation of making the displayed image appear moving in the conventional apparatus by using the above-mentioned method will now be described. Display of a process in which the image is deformed like one frame of a video film. Data in ROM110
It is possible to control it by storing it in a screen and switching it to display every screen or a plurality of screens at a certain fixed interval.

For example, in order to switch and display the six still images stored in the ROM 110 as shown in FIG. 10, the display RAM 10 is first sent from the microcomputer.
6, the control data for each image shown in FIG. 10 is stored, and the display position data is input to the display position control circuit 108. Then, from the display position control circuit 108, the display RAM read address s10 is synchronized with the display position timing.
8 is output, and the control data s106 of the image 701 in FIG. 10, which is the first image to be displayed, is output from the display RAM 106. Then, this control data s106 is decoded to generate a display code s107, and a display data address s109 is created from the display code s107 and the vertical position data s118 output from the display position control circuit 108, and is displayed from the ROM 110. Read the data s110,
The RGB signal s111 is created by the display circuit 111, and C
The image 701 of FIG. 10 is displayed on the RT 101. Then, at this time, the timer inside the microcomputer is measuring time, and after a certain period of time, the image 702 of FIG. 10 is displayed on the CRT 101 in the same procedure, and similarly, the images 703 to 10 of FIG. 10 are displayed. By displaying the image 706 at certain fixed time intervals, the still image can be seen as moving.

[0016]

However, in the configuration of the conventional image display device, when a still image is switched and displayed for each screen or for each of a plurality of screens, as described above, the microcomputer always waits for the screen switching time. In addition, the control data stored in the display RAM 106 had to be rewritten at an appropriate timing in order to continue to display the still image. This operation places a heavy burden on the microcomputer, and as a result, there is a problem that the performance of the image display apparatus as a whole is lowered.

The present invention has been made in view of the above problems, and an image display device for displaying a moving image by switching the image for each screen or for every plurality of screens without imposing a burden on the microcomputer. An object is to provide an image display method.

[0018]

In order to solve the above-mentioned problems, the image display device according to claim 1 of the present invention is a still image display or an image display for displaying a moving image by switching a plurality of still images. In the device, a first memory for storing control data including at least a display code of an image displayed on a display screen and a moving image / still image selection signal indicating whether or not the image indicated by the display code is a moving image. And a second memory in which display data of all images displayed on the display screen are stored in advance, and the control data is read from the first memory to display the display code and the moving image still image. The decoding circuit that outputs the selection signal and the increment signal that is output when the value of the counted vertical synchronization signal reaches a certain set value are used to determine the number of images used for the set moving image. Then, by using the initial value of the video code from the video code generation circuit that counts the increment signal and outputs the count value that is incremented, decremented, or cyclically repeated as a video code, the display code. An adder that generates an initial display code that is a display code used when displaying a still image and a moving image display code that is a display code used when displaying a moving image using the moving image code, and the moving image still image described above. A selector for selecting one of the moving image display code and the initial display code based on a selection signal, a display code selected by the selector, and display data corresponding to the display code stored therein. And an address generation circuit for outputting the address of the second memory.

According to a second aspect of the present invention, in the image display apparatus according to the first aspect, the moving image code generation circuit stores the number of images used for the set moving image. Register, a comparator for comparing the number of images stored in the register with the value of the moving image code, and the comparator input if the number of images does not match the value of the moving image code. It is provided with a binary counter which counts up the increment signal, stops counting when the number of images and the value of the moving image code match, and outputs the output as the moving image code.

According to a third aspect of the present invention, in the image display apparatus according to the first aspect, the moving image code generation circuit stores the number of images used for the set moving image. Register, a comparator for comparing the number of images stored in the register with the value of the moving image code, and the comparator input if the number of images does not match the value of the moving image code. A binary counter is provided which counts up the increment signal, resets the count when the number of images matches the value of the moving image code, and outputs the output as the moving image code.

According to a fourth aspect of the present invention, in the image display apparatus according to the first aspect, the moving picture code generation circuit stores the number of images used for the set moving picture. Register, a detector for detecting that the moving image code has a predetermined numerical value, and counting down the increment signal that is input when the output of the detector does not indicate detection of the predetermined numerical value. If the output indicates that a predetermined numerical value has been detected, the number of images stored in the register is preset, and a binary down counter having the output as the moving image code is provided.

According to a fifth aspect of the present invention, in the image display method for displaying a still image or a moving image by switching a plurality of still images, a display code of an image to be displayed, Control data including at least a video still image selection bit indicating whether or not the image to be displayed is a moving image, moving image speed data indicating the timing of switching the moving image, and moving image control data indicating the number of images used for the moving image, A data input step of inputting, a count start step of starting counting of the vertical synchronizing signal, an initial value of the moving picture code is created, and an initial display code created by the initial value of the moving picture code and the display code is shown. Initial screen display step of displaying the image on the display device, and reset every time the vertical sync signal is counted up to the value of the moving picture speed data An increment signal output step of outputting an increment signal, and a moving image code generation step of determining whether the moving image code at that time is a predetermined value each time the increment signal is received and generating a moving image code according to the determination result. A moving picture display code generating step of generating a moving picture display code which is a display code used when displaying a moving picture from the initial display code using the moving picture code, and displaying the moving picture based on the moving picture still picture selection bit. A selection step of selecting one of the code and the initial display code, and an image display step of displaying an image indicated by the display code selected in the selection step on a display device, and the increment signal output A loop is formed between the step and the image display step, and Code generating step, the determination result is the video code at that time to +1 or -1 if a mismatch is one if the determination result matches the video code at that time returned to the initial value.

According to a sixth aspect of the present invention, in the image display method for displaying a still image or a moving image by switching a plurality of still images, a display code of an image to be displayed, Control data including at least a video still image selection bit indicating whether or not the image to be displayed is a moving image, moving image speed data indicating the timing of switching the moving image, and moving image control data indicating the number of images used for the moving image, A data input step of inputting, a count start step of starting counting of the vertical synchronizing signal, an initial value of the moving picture code is created, and an initial display code created by the initial value of the moving picture code and the display code is shown. Initial screen display step of displaying the image on the display device, and reset every time the vertical sync signal is counted up to the value of the moving picture speed data An increment signal output step of outputting an increment signal, and a moving image code generation step of determining whether the moving image code at that time is a predetermined value each time the increment signal is received and generating a moving image code according to the determination result. A moving picture display code generating step of generating a moving picture display code which is a display code used when displaying a moving picture from the initial display code using the moving picture code, and displaying the moving picture based on the moving picture still picture selection bit. A selection step of selecting one of the code and the initial display code, and an image display step of displaying an image indicated by the display code selected in the selection step on a display device, and the increment signal output A loop is formed between the step and the image display step, and The code generation step increments the moving picture code at that time point by +1 or -1 if the judgment result does not match, and stops the moving picture code at the time point by that value if the judgment result matches. .

[0024]

BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) Hereinafter, Embodiment 1 of the present invention will be described with reference to the drawings.
First, the configuration of the image display device according to the first embodiment will be described with reference to FIG. FIG. 1 is a block diagram showing the configuration of the image display device according to the first embodiment. Figure 1
In the image display device according to the first embodiment, the control data from the microcomputer (not shown), the display position data that determines the display position of the image, the moving image speed data that determines the moving speed of the moving image, and the moving image The display image control unit 100 that receives the moving image control data indicating the number of images to be used and outputs the RGB signal s111 according to the vertical synchronizing signal V, the horizontal synchronizing signal H, and the dot clock D necessary for image display, and the RGB signal. The CRT 101 receives s111 and displays an image.

The display image control unit 100 has a display RAM.
106, a display decoding circuit 107, a display position control circuit 108, a ROM address generation circuit 109, and a ROM
110, display circuit 111, video speed setting circuit 1
02, the moving image code generation circuit 103, and the adder 104
And a selector 105.

The display RAM 106 stores control data written by a microcomputer, and the control data has a display code indicating which image is displayed and what color the displayed image is. In addition to information such as a color code indicating that the moving image still image selection bit indicating whether the displayed image is a moving image is further included. In the first embodiment, the control data includes the display code and the moving image / still image selection bit in order to simplify the description.

Further, the display decoding circuit 107 decodes the control data s106 including the display code and the moving picture / still picture selection bit read from the display RAM 106 to display the display code s107 and the moving picture / still picture selection signal s1.
And 17 are output.

Further, the moving picture speed setting circuit 102 described above.
The moving picture speed data, which is the count value of the vertical synchronizing signal V, is written from the microcomputer, and the vertical synchronizing signal V input to the display image control unit 100 is counted up to the value of the moving picture speed data. Is completed every time, the moving image code increment signal s102
Is output. After the moving picture control data is written from the microcomputer, the moving picture code generation circuit 103 counts up or counts down the moving picture code increment signal s102 based on the moving picture control data to obtain a value. The moving image code s103 that is increased, decreased, or cyclically repeated is output. Embodiment 1
, The moving picture code circuit 103a increases to 0, 1, ... And the moving picture code s103a stopped at the moving picture control data n.
Shall be output. FIG. 3 is a diagram showing a configuration of the moving picture code generation circuit 103a in the first embodiment. In FIG. 3, the moving picture code generation circuit 103a stores moving picture control data from the microcomputer, and the moving picture number data s201. Video number register 201 that outputs
And the value of the video number data s201 and the video code s10
3a is compared, and if they match, "0" is output, and if they do not match, "1" is output as a comparison result signal s202, and the logic of the comparison result signal s202 and the moving image code increment signal s102. The AND circuit 203 that takes the product and the video control data are reset when they are input, and the logical product s203 from the AND circuit 203 is counted up, and the count value is the video code s.
And a binary counter 204 with reset, which is output as 103a.

The adder 104 has a display code s107 output from the display decoding circuit 107,
The moving picture code s103a output from the moving picture code generation circuit 103 generates and outputs a moving picture display code s104 which is a display code used when displaying a moving picture. The selector 105 includes the display decoding circuit. The moving image / still image selection signal s11 output from 107
7, either the moving picture display code s104 or the display code s107 is selected and output as a selector output code s105. Since the other configurations are the same as those of the conventional device shown in FIG. 9, description thereof will be omitted here.

That is, the display image control unit 100 in the first embodiment is the same as the conventional display image control unit 6 shown in FIG.
In addition to the configuration of 00, the moving picture speed setting circuit 1 described above
02, the moving image code generation circuit 103, and the adder 104
And a selector 105. Further, in the display decoding circuit 107 according to the first embodiment, in addition to the function of the conventional display decoding circuit 107 shown in FIG. 9, a moving image still image selection bit is further included in the present embodiment. From the control data s106 in the form 1, the moving image / still image selection signal s117
Is provided.

Next, with reference to FIGS. 1 to 4, the operation of displaying a graphic in the image display device according to the first embodiment configured as described above will be described. FIG. 2 shows the display RAM 10 of the image display device according to the first embodiment.
An example of control data set to 6 (FIG. 2 (a)) and RO
An example of the display data stored in advance in M110 (see FIG. 2)
(b)) and an example of an image displayed on the CRT 101 (FIG. 2).
FIG. 4 is a flowchart diagram showing a series of operations of the display image control unit 100 in the first embodiment. The data A, the data B, the data C, and the data D shown in FIG. 2B are display data of the graphic A, the graphic B, the graphic C, and the graphic D, respectively. If the figure has 16 dots in the vertical direction, the data A has 8-bit data for 16 addresses. As the display code corresponding to each display data, here, the figure A is the display code "0", the figure B is the display code "1", the figure C is the display code "2", and the figure D is the display code. It corresponds to "3".

First, the microcomputer is the CRT1.
Display the control data of the figure displayed on the initial screen of 01 RA
The display position data is displayed in M106 in the display position control circuit 1
08, the moving image speed data is written in the moving image speed setting circuit 102, and the moving image control data is written in the moving image code generating circuit 103a (step S401). Here, it is assumed that the moving image control data is n (n: integer), the moving image is selected if the moving image still image selection bit is "1", and the moving image is not selected if it is "0".
For example, when two control data as shown in FIG. 2A are written from the microcomputer to the display RAM 106, the first control data has a display code 501 of “0” and a moving image still image selection bit 502 of “1”. 1 "indicates that the graphic A is displayed as a moving picture, while the second control data has the display code 501 of" 3 "and the moving picture / still picture selection bit 502 of" 0 ". Indicates that is displayed as a still image.

When the above-mentioned respective data are set in the display image control unit 100 of the image display device in the first embodiment in this way, the moving image speed setting circuit 102 starts counting (step S402), and the CRT1.
01, the first figure, figure A and figure D, are shown in FIG.
It is displayed as shown in the initial screen 503 of (c) (step S403).

The specific operation from the setting of each data in the display image control unit 100 to the display of the first figure on the CRT 101 will be described below. First, the moving image speed setting circuit 102 starts counting the vertical synchronization signal V, and the display position control circuit 108 determines the start of the display screen by the vertical synchronization signal V and the vertical position of the screen by the horizontal synchronization signal H. The horizontal position of the screen is determined by the clock D, and the display RAM read address s108 is output at the timing of the display position.

Then, the display RAM read address s
The display RAM 106, which has received 108, displays the control data s1.
06 is read out, the display decoding circuit 107 decodes the control data s106, and a display code s107 indicating which figure is displayed is added to the adder 104 and the selector 1.
05, and a moving picture still image selection signal s117 indicating whether or not the figure is to be a moving picture is output to the selector 105.
For example, in the case of the first control data shown in FIG. 2A, the display code s107 “0” and the moving image / still image selection signal s117 “1” are output, and in the case of the second control data, the display Code s107 "3", video still image selection signal s
117 "0" is output.

Next, in the adder 104, the display code s107 from the display decoding circuit 107 and the moving picture code s103a from the moving picture code generating circuit 103a are added. Here, when the moving picture control data is input from the microcomputer, the moving picture code generation circuit 103a according to the first embodiment sets the value to the moving picture number register 2
01, and the binary counter with reset 204 is reset at the same time when the moving image control data is input. As a result, the binary counter with reset 20
4 outputs "0" as the initial value of the moving image code s103a. Therefore, in the case of the first figure, the above display code s
The value of the moving image display code s104, which is the added value of 107 and the moving image code s103a, becomes the same value as the display code s107, and the selector 105 outputs the moving image still image selection signal s.
In any case, regardless of the value of 117, the display code s
The value of 107 will be output as the selector output code s105.

Then, the ROM address generation circuit 109 generates the display data address s109 in which the display data of the figure indicated by the selector output code s105 is stored, and the RO is generated based on the display data address s109.
The display data s110 is output from M110. For example,
In the case of the first control data, the data A corresponding to the display code “0” is output to the display circuit 111, and in the case of the second control data, the data D corresponding to the display code “3” is displayed in the display circuit 111. Is output.

Then, in the display circuit 111, the RGB signal s111 synchronized with the dot clock D is displayed on the CRT.
101, and for example, the initial screen 50 of FIG.
As shown in FIG. 3, in the case of the first control data, the figure A
However, in the case of the second control data, the figure D is the CRT 101.
Will be displayed as the first screen.

As can be seen from the above, the CRT1
The graphic first displayed on 01 is the graphic indicated by the display code included in the control data written in the display RAM 106 by the microcomputer.

Next, after a certain period of time has passed since the counting was started in the moving image speed setting circuit 102 (step S404), the first figure displayed on the CRT 101 is switched to the next figure (step S404). S40
The operation of the display image control unit 100 in steps 5 to S412) will be described.

First, when the moving picture speed setting circuit 102 counts the vertical synchronizing signal V by the value of the set moving picture speed data (step S404), the moving picture speed setting circuit 102 resets the count value to "0". And the moving image code increment signal s10
2 is output (step S405). Then, the moving picture code generation circuit 103a receiving the moving picture code increment signal s102 compares the moving picture code s103a output last time, here the initial value “0”, with the moving picture control data n in the comparator 202 (step S406). ), If they do not match, "1" is output as the comparison result signal s202, so the AND circuit 203 outputs a logical product s203 every time the moving image code increment signal s102 is input, and the binary counter with reset 204 is counted up. Let Therefore, if the moving image control data n and the moving image code s103a "0" do not match, the reset binary counter 204 is counted up and "1" is output as the moving image code s103a (step S4).
07). Then, in the adder 104, the display code s
107 and the moving image code s10 generated as described above.
3a “1” is added to generate a moving image display code s104 which is display data used when displaying a moving image. For example, in the first control data of FIG. 2A, (display code s107 “0”) + (moving image code s103 “1”) =
(Movie display code s104 “1”) is output, and in the case of the second control data, (display code s107 “3”) +
(Video code s103 “1”) = (Video display code s1
04 "4") is output. Then, in the selector 105, the moving picture display code s1 is generated based on the moving picture still picture selection signal s117 output from the display decoding circuit 107.
Either 04 or display code s107 is selected (step S409). Here, if the moving image / still image selection signal s107 is "1", it is determined that the moving image is displayed, and the display code s is selected as the selector output code s105.
The moving image display code s104 obtained by adding +1 to 107 is RO.
It is output to the M address generation circuit 109 (step S41
0), the display data corresponding to the moving image display code s104 is output to the display circuit 111 (step S412).
As a result, on the CRT 101, the figure indicated by the display code obtained by adding +1 to the display code included in the control data written in the display RAM 106 by the microcomputer is displayed. On the other hand, if the moving image / still image selection signal s117 is "0", it is determined that the still image is displayed, and the display code s107 is output to the ROM address generation circuit 109 as the selector output code s105 (step S411).
Since the display data corresponding to the display code s107 is output to the display circuit 111 (step S412), the CRT
The display RAM 106 is displayed on the microcomputer 101.
The graphic indicated by the display code written in, that is, the graphic that is the same as the graphic displayed on the first screen is displayed. Therefore, in the case of the first control data, the selector output code s105
When the moving image display code s104 “1” is the second control data, the display code s107 “3” is output as the selector output code s105.
The graphic A based on the first control data and the graphic D based on the second control data displayed on the initial screen 503 of (c) are displayed as a first moving image display as shown on the screen 504 of FIG. 2C. The graphic A based on the control data of No. 2 is switched to the graphic B, and the graphic D based on the second control data indicating the still image display is displayed as the graphic D as it is.

After a further time has elapsed, when the moving picture speed setting circuit 102 counts the vertical synchronizing signal V by the value of the moving picture speed data set again (step S404), the moving picture speed setting circuit 102 causes the counter The value is reset and the moving image code increment signal s102 is output again (step S405). And
The previously output video code s103a, here "1"
And the moving picture control data n (step S40
6) If they do not match, count up and output "2" as the moving image code s103 (step S40).
7).

Then, in the adder 104, the moving image code s generated as described above is added to the display code s107.
103a “2” is added to generate a moving image display code s104 which is display data used when displaying a moving image. Then, in the selector 105, the moving image / still image selection signal s
Based on 117, either the moving image display code s104 or the display code s107 is selected (step S40).
9), the graphic corresponding to the selected selector output code s105 is displayed on the CRT 101. Therefore, the figure displayed like the screen 504 of FIG.
As shown in the screen 505 of FIG. 2C, the first showing the moving image display.
The graphic B based on the control data of No. 2 is switched to the graphic C, and the graphic D based on the second control data indicating the still image display is displayed as it is.

Then, the above operation is performed by the value n of the moving picture control data written in the moving picture code generation circuit 103a.
After repeating the number of times, the moving image control data n is compared with the moving image code s103a output last time, here “n” in the comparator 202 in the above-described step S406 in the next n + 1-th time. Since the moving image code s103a and the moving image control data match here, "0" is output as the comparison result signal s202, the logical product s203 is fixed to "0", and the counter is stopped in the binary counter with reset 204. It Therefore, here, the moving image code s103a "n" is output without counting up, and the adder 104
The display code s107 and the moving image code s103a "n" are added to generate the moving image display code s104, and the selector 105 outputs the moving image display code s104 or the display code s1 based on the moving image still image selection signal s117.
07 is selected (step S409), and the CRT 101 is selected based on the selected selector output code s105.
The image is displayed on. Therefore, regarding the graphic displayed on the CRT 101, the previously displayed graphic is displayed in the case of the first control data indicating the moving image display, and the graphic D is displayed in the case of the second control data indicating the still image display. It will be displayed as it is.

Here, specifically, the moving picture control data is 5, the control data includes the display code "0", and the moving picture still picture selection bit "1".
It is assumed that the display data whose shape is gradually changed is stored as shown in FIG. 7, the image 701 is displayed in the display code “0”, the image 702 is displayed in the display code “1”, and the image 703 is displayed in the display code “2”. If the display code “3” corresponds to the image 704, the display code “4” corresponds to the image 705, and the display code “5” corresponds to the image 706, the graphic first displayed on the CRT 101 corresponds to the control data. Display code “0” included
Is an image 701 corresponding to the video speed setting circuit 1
Every time the video code increment signal s102 is output from 02, the video displayed on the CRT 101 is a video display code that is a display code used for video display in the adder 104, and the image is displayed without control of the microcomputer. , Image 702, image 703, ..., image 70
6 is switched at a certain fixed interval and stops at the image 706.

As described above, according to the first embodiment,
As an initial value, a control signal including the above-mentioned display code and video still image selection signal, display position data, video speed data which is data related to video display, and video control data are set as initial values, and the video speed is set. Each time the setting circuit 102 counts the vertical synchronizing signal to the value of the moving image speed data, the moving image code increment signal s102 is output, and the moving image code generation circuit 103 outputs the moving image code increment signal s1.
02 is counted up, a moving image display code which is a display code used for displaying a moving image is automatically generated in the adder 104, and based on the moving image still image selection signal s117,
Since either the display code s107 or the moving image display code s104 is selected and displayed by the selector 105, the image and the moving image of the image and the moving image to be displayed first on the CRT 101 are initially set by the microcomputer. By setting the data relating to the moving image such as the speed and the number of images used for the moving image, it is not necessary for the display image control unit 100 to generate the address for displaying the moving image in the microcomputer and write it in the display RAM 106, and the moving image display code s104. Can be automatically generated at a certain timing to display a moving image on the CRT 101, and if the selector 105 always outputs the value of the display code s107 as the selector output code s105, a still image is not generated. Can be displayed. Further, the vertical synchronizing signal V is counted by the moving picture speed setting circuit 102, and the image is switched every time the moving picture code increment signal s102 is output. Therefore, the moving picture display speed is displayed not by the microcomputer. It can be managed by the image control unit 100. As a result, the first embodiment
According to the image display device in (1), it is possible to switch the images one after another and display the moving image without burdening the microcomputer when displaying the moving image. Further, if the value of the moving picture speed data set as the initial value is changed, the number of vertical synchronizing signals V counted by the moving picture speed setting circuit 102 changes, and as a result, the timing of switching the image changes. , You can change the speed of moving images.

Further, in the configuration of the moving image code generation circuit 103a in the first embodiment, the image displayed as a moving image can be stopped at a predetermined image without control from the microcomputer.

In the first embodiment, the case where the moving picture code generating circuit 103 outputs the moving picture code s103 which increases to 0, 1, ... And which is stopped by the moving picture control data n has been described. If the configuration of the code generation circuit 103 is changed, the moving image code s103 is changed to n, ...
It is decreased to 1,0 to display a moving image with the opposite movement, and the moving image code s103 is 0,1,2, ... n, 0,1,
It is possible to repeatedly display a moving image by repeating 2, ... n, 0.

(Modification 1 of Embodiment 1) Hereinafter, referring to FIG. 5, the moving image code s103 is 0, 1, 2, ..., N, 0,
The moving picture code generation circuit 103b that is cyclically repeated 1, 2, ..., N will be described. FIG. 5 is a block diagram showing the configuration of the moving image code generation circuit 103b.

In FIG. 5, the moving image code generation circuit 103
b is a moving picture number register 201 which stores moving picture control data from the microcomputer and outputs moving picture number data s201, and compares the value of the moving picture number data s201 with the numerical value of the moving picture code s103b to obtain a comparison result signal s302. The output of the comparator 302, the logical sum s3 of the comparison result signal s302 and the reset signal included in the moving image control data.
The OR circuit 301 taking 01 and the logical sum s301 reset the moving image code increment signal s.
A binary counter 204 with reset, which counts up 102 and outputs the count value as a moving image code s103b, is provided.

The operation of displaying a graphic in the display image control unit 100 having the moving picture code generation circuit 103b configured as described above will be described below with reference to FIG. FIG. 6 is a flow chart diagram showing a series of operations of the display image control unit 100 in the first modification of the first embodiment.

First, the microcomputer is the CRT1.
Display the control data of the figure displayed on the initial screen of 01 RA
The display position data is displayed in M106 in the display position control circuit 1
08, the moving image speed data is written in the moving image speed setting circuit 102, and the moving image control data is written in the moving image code generating circuit 103b (step S601). Here, as described in the first embodiment, the control data also includes a display code indicating which figure is displayed, and a moving image / still image selection bit indicating whether or not the displayed figure is displayed as a moving image. If the moving picture control data is n (n: integer) and the moving picture still picture selection bit is "1", a moving picture is selected, and if it is "0", a still picture is selected. It shall be.

In this way, when the above-mentioned respective data are set in the display image control unit 100 in the first modification of the first embodiment, the moving image speed setting circuit 102 starts counting (step S602).

Here, the moving picture code generation circuit 103b in the first modification of the first embodiment writes the moving picture control data n to the moving picture number register 201 when the microcomputer receives the moving picture control data n, and also inputs the moving picture control data n. At the same time, a reset signal “1” is sent to the OR circuit 301 to reset the binary counter with reset 204, and the OR circuit 301 outputs “1” as the logical sum s301 regardless of the value of the comparison result signal s302. , Reset the binary counter 204 with reset. As a result, the binary counter with reset 204 outputs "0" as the initial value of the moving image code s103b, and CR
A graphic corresponding to the display code set in the control data is displayed as the first graphic on T101 (step S603).

Next, after a certain period of time has passed since the vertical synchronizing signal V was started to be counted in the moving picture speed setting circuit 102 (step S604), the first figure displayed on the CRT 101 as described above is next. Until switching to the figure (step S605 to step S612)
The operation of the display image control unit 100 will be described.

First, when the moving picture speed setting circuit 102 counts the vertical synchronizing signal V by the value of the set moving picture speed data (step S604),
The moving image speed setting circuit 102 resets the count value to "0" and at the same time, the moving image code increment signal s1.
02 is output (step S605). Then, the moving picture code generation circuit 103b receiving the moving picture code increment signal s102, the comparator 302 outputs the moving picture code s103b, which is the initial value “0” in this case,
The moving image control data n is compared (step S606), and if they do not match, “0” is output, and if they match, a comparison result signal s302 that outputs “1” for a certain period of time and becomes “0” again is output. That is, if the comparison result does not match in the comparator 302, the comparison result signal s302 is “0”, and the reset signal by the moving image control data is also “0” because the reset has already been completed. The logical sum s301 from is 0, and the reset binary counter 204 is released from reset. Therefore, if the comparison results do not match, the binary counter with reset 20
4 is counted up each time the moving image code increment signal s102 is input, and the count value is output as the moving image code s103b (step S607). Then, in the adder 104, the display code s107,
The moving image code s103b obtained as described above, which is "1" in this case, generates a moving image display code s104 which is a display code used when displaying a moving image. Then, in the selector 105, the display decoding circuit 1
07, the moving picture display code s107, or the moving picture display code s
Either 104 is selected (step S609).
Here, if the moving image / still image selection signal s117 is "1", it is determined that the moving image is displayed, and the selector output code s
The moving picture display code s104 obtained by adding +1 to the display code s107 is the ROM address generation circuit 109.
Is output to (step S610), and the moving image display code s
Display data corresponding to 104 is output to the display circuit 111 (step S612). As a result, on the CRT 101, the figure indicated by the display code obtained by adding +1 to the display code included in the control data written in the display RAM 106 by the microcomputer is displayed. On the other hand, if the moving image / still image selection signal s117 is "0", it is determined that the still image is displayed, and the display code s107 is output as the selector output code s105 to the ROM address generation circuit 109 (step S611). Since the display data corresponding to s107 is output to the display circuit 111 (step S612), the graphic displayed by the display code included in the control data written in the display RAM 106 by the microcomputer, that is, the first screen is displayed on the CRT 101. The same graphic as the displayed graphic is displayed.

When a further time elapses, the moving picture speed setting circuit 102 again counts the vertical synchronizing signal V by the value of the moving picture speed data (step S).
604), the moving image speed setting circuit 102 resets the counter value and outputs the moving image code increment signal s102 (step S605). Then, the previously output moving image code s103b, here "1", is compared with the moving image control data n (step S606). If they do not match, the count is counted up, and "2" is output as the moving image code s103b (step S407). ).

Then, in the adder 104, the moving image code s generated as described above is added to the display code s107.
103b “2” is added, and the moving picture display code s10 is added.
4 is generated. Then, the selector 105 selects either the moving picture display code s104 or the display code s107 based on the moving picture still picture selection signal s117 (step s609), and the selected selector output code s1.
A graphic corresponding to 05 is displayed on the CRT 101.

The above-described operation is performed by the moving picture code generation circuit 1
After repeating n times the moving picture control data written in 03b, at the next (n + 1) th time, the above step S
At 606, the moving image control data n is compared with the previously output moving image code s103, here "n", and since the moving image code s103 and the moving image control data match.
The comparator 302 is "1" for a certain period. At this time, since the reset signal from the moving image control data is "0", the logical sum s301 is "1" for a certain period,
The binary counter 204 with reset is reset (step S608), and the comparison result signal s302 is "0".
Reset is released when That is, in the first embodiment, the binary counter with reset 204 stops without being reset at the (n + 1) th time (FIG. 4).
Step S408), in the first modification of the first embodiment, since the binary counter with reset 204 is reset, the next moving image code increment signal s102 is not stopped.
When is input, the count-up is restarted, and the operation of resetting again when the moving image control data n and the moving image code s103 match again is repeated.

Here, specifically, the moving picture control data is 5, and the control data includes the display code "0" and the moving picture still picture selection bit "1".
It is assumed that the display data whose shape is gradually changed is stored as shown in FIG. 7, the image 701 is displayed in the display code “0”, the image 702 is displayed in the display code “1”, and the image 703 is displayed in the display code “2”. If the display code “3” corresponds to the image 704, the display code “4” corresponds to the image 705, and the display code “5” corresponds to the image 706, the graphic first displayed on the CRT 101 corresponds to the control data. Display code “0” included
Is an image 701 corresponding to the video speed setting circuit 1
Every time the video code increment signal s102 is output from 02, the video displayed on the CRT 101 is a video display code that is a display code used for video display in the adder 104, and the image is displayed without control of the microcomputer. , Image 702, image 703, ..., image 70
6, the image 701, the image 702, ... Are repeatedly displayed.

As described above, in the first modification of the first embodiment, the moving picture code generation circuit 103b is reset at the same time when the moving picture control data is input from the microcomputer, so that the initial value of the moving picture code s103 is set to "". 0 "
Then, the operation of counting up the moving image code s103 up to the value of the set moving image control data n, returning to "0" and counting up again is repeated. The moving image code generation circuit 103b causes the display image control unit 100 to operate.
Is the moving image control data n set by the microcomputer.
It is possible to display a moving image by switching the number of images of, that is, the number of images used for the moving image, and to repeat the displaying of the moving image any number of times. Further, the microcomputer may write “0” in the moving picture number register 201 and reset the binary counter with reset 204, thereby stopping the repetition of the moving picture display.

(Modification 2 of Embodiment 1) Next, referring to FIG. 7, n, ... 3,2,1,0, n, ... 3,2,1,0
… Video code s103 that cyclically repeats decrease
The moving image code generation circuit 103c that outputs is described. FIG. 7 is a block diagram showing the configuration of the moving image code generation circuit 103c in the second modification of the first embodiment.

In FIG. 7, the moving image code generation circuit 103
c is a moving picture number register 2 that receives moving picture control data from the microcomputer and outputs moving picture number data s201.
01 and the moving image code s103c, and if the numerical value of the moving image code s103c is "0", the detection result signal s401
And the detection result signal s401
And s4 of the reset signals included in the moving image control data
An OR circuit 402 that takes 02, and a preset binary down counter 403 that presets the moving image number data s201 by the logical sum s402, counts down the moving image code increment signal s102, and outputs the count value as the moving image code s103. .

The operation of displaying a graphic in the display image control unit 100 having the moving picture code generation circuit 103c configured as described above will be described below. First, the microcomputer displays the control data of the graphic displayed on the initial screen of the CRT 101 in the display RAM 106, the display position data in the display position control circuit 108, the moving picture speed data in the moving picture speed setting circuit 102, and the moving picture control. The data is written in the moving image code generation circuit 103c. Here, as described in the first embodiment, the control data also includes a display code indicating which figure is displayed, and a moving image / still image selection bit indicating whether or not the displayed figure is displayed as a moving image. If the moving picture control data is n (n: integer) and the moving picture still picture selection bit is "1", a moving picture is selected, and if it is "0", a still picture is selected. It shall be.

In this way, when the above-mentioned respective data are set in the display image control unit 100 in the second modification of the first embodiment, the moving image speed setting circuit 102 starts counting.

Here, the moving picture code generation circuit 103c in the second modification of the first embodiment writes the moving picture control data n to the moving picture number register 201 when the microcomputer inputs the moving picture control data n, and also inputs the moving picture control data n. Binary down counter with preset 4
In order to preset the moving image number data s201 in 03, here "n", the preset signal "1" is applied to the OR circuit 402.
The OR circuit 402 outputs "1" as the logical sum s402 regardless of the value of the detection result signal s401, and presets the moving picture number data s201 "n" in the preset binary down counter 403. As a result, the preset binary down counter 403 outputs the value “n” of the moving picture number data S201 as the initial value of the moving picture code s103c, and the display set by the control data is displayed on the CRT 101 as the first figure. A graphic corresponding to the display code of code + n is displayed.

Next, after a certain period of time has passed since the counting of the vertical synchronizing signal V was started in the moving picture speed setting circuit 102, the first figure displayed on the CRT 101 is switched to the next figure as described above. The operation of the display image control unit 100 up to the above will be described.

First, in the moving picture speed setting circuit 102, when the vertical synchronizing signal V corresponding to the set value of the moving picture speed data is counted, the moving picture speed setting circuit 102 resets the count value to "0" and The moving image code increment signal s102 is output. Then, the moving picture code generation circuit 103c receiving the moving picture code increment signal s102 outputs the moving picture code s103c output last time in the detector 401, here "0" if the initial value "n" is not "0". , “0”, the detection result signal s401 which becomes “1” for a certain period and becomes “0” again is output. That is, if the detection result of the detector 401 is other than "0", the detection result signal s4
01 is “0”, and the preset signal by the moving image control data is also “0” because the preset has already been completed. Therefore, the logical sum s402 from the OR circuit 402 becomes “0”, and the binary down counter with preset 403. Is not preset. Therefore, if the moving image code s103c is other than "0", the preset binary down counter 403 determines that the moving image code increment signal s102.
Is counted down every time is input, and the count value is output as the moving image code s103c. Then, in the adder 104, the display code s107 and the moving image code s103c obtained as described above, in this case "n-
1 "generates a moving picture display code s104 which is a display code used when displaying a moving picture. Then, in the selector 105, based on the moving picture still picture selection signal s117 output from the display decoding circuit 107, the moving picture display is performed. Either the code s107 or the moving picture display code s104 is selected.If the moving picture still picture selection signal s117 is "1", it is determined that the moving picture is displayed, and the moving picture is selected as the selector output code s105. The display code s104 is output to the ROM address generation circuit 109, and the display data corresponding to the moving image display code s104 is output to the display circuit 111. On the other hand, if the moving image still image selection signal s117 is "0", the still image is displayed. It is determined to be display, and the display code s1 is selected as the selector output code s105.
07 is output to the ROM address generation circuit 109, and the display data corresponding to the display code s107 is displayed on the display circuit 11
It is output to 1.

After a further lapse of time, the moving picture speed setting circuit 102 again counts the vertical synchronizing signal V corresponding to the value of the moving picture speed data, and every time the moving picture code increment signal s102 is output, the moving picture display code is generated. After the circuit 103c counts down and the moving image code s103c is output as n-1, n-2, ... Repeated n times the moving image control data, the next n +
When the moving image code s103c becomes "0" in the first time, the detection result signal s401 becomes "1" for a certain period. At this time, since the preset signal from the moving image control data is "0", the logical sum s402 becomes "1" for a certain period of time, and the preset binary down counter 403 is preset with the moving image number data s201 again.
When the inspection result signal s401 becomes “0”, the preset is released and the moving image code increment signal s102
Is input, the countdown is restarted, and when the video code s103c becomes "0", the video number data s
The operation of presetting 201 "n" is repeated.

Here, specifically, the moving picture control data is 5, the control data includes the display code "0", and the moving picture still picture selection bit "1".
It is assumed that the display data whose shape is gradually changed is stored as shown in FIG. 7, the image 701 is displayed in the display code “0”, the image 702 is displayed in the display code “1”, and the image 703 is displayed in the display code “2”. If the display code “3” corresponds to the image 704, the display code “4” corresponds to the image 705, and the display code “5” corresponds to the image 706, the graphic first displayed on the CRT 101 corresponds to the control data. Display code "5" included
Is an image 706 corresponding to the video speed setting circuit 1
Every time the video code increment signal s102 is output from 02, the video displayed on the CRT 101 is a video display code that is a display code used for video display in the adder 104, and the image is displayed without control of the microcomputer. , Image 705, image 704, ..., image 70
1, the image 706, the image 705, ... And the image is repeatedly displayed in the reverse rotation.

As described above, in the moving picture code generation circuit 103c in the second modification of the first embodiment, the moving picture control data is preset at the same time as the moving picture control data is input from the microcomputer. The initial value of the code s103c is "n", and the moving image code s10
The moving image code s103 is counted down until 3c becomes "0", and when the moving image code s103c becomes "0", it is preset to the value of the moving image control data again, and the count down operation is repeated. This video code generation circuit 1
03c, the display image control unit 100 switches the number of images of the moving image control data n set by the microcomputer, that is, the number of images used for the moving image, thereby displaying the moving image in the opposite direction, and displaying the moving image. Can be repeated any number of times. Further, the microcomputer can write "0" in the moving picture number register 201 and preset "0" in the preset binary down counter 403 to stop repeating the moving picture display.

The first embodiment and its modification 1,
2, the control data includes the display code and the moving image / still image selection bit, but may include, for example, a color code. In that case, FIG.
If the control data shown in (a) includes a color bit indicating a color code, and the color bit is "1", for example, a red-based color palette A prepared in advance is used, and the color code is "2". In the case of “”, if the blue-based color palette B prepared in advance is used, it is possible to change the color even with the same graphic display.

In the first embodiment, 0,
For the moving picture code generation circuit 103a that outputs the moving picture code s103a that increases to 1, ... and stops at the moving picture control data n, and in the first modification of the first embodiment, 0, 1,
2, ... n, 0,1,2, ... n, 0 ... The moving picture code generation circuit 103b that outputs the repeating moving picture code s103b, and in the second modification of the first embodiment, n ,.
The moving picture code generation circuit 103c that outputs the moving picture code s103c that decreases as 3, 2, 1, 0 has been described.
The moving picture code generation circuit 103 may be composed of a circuit in which the moving picture code generation circuits 103a to 103c shown in FIGS. 3, 5, and 7 are combined.
For example, the configuration of the moving image code generation circuit 103 in the case where the moving image code s103 that is stopped at a predetermined value that has increased or decreased or is cyclically increased or decreased to the predetermined value is output is shown in FIG. In such a case, it is possible to input the above moving image control data from the microcomputer and at the same time, to select whether to stop the moving image code s103 at the value of the moving image control data or repeat it. It is necessary to input the / stop switching signal and the up / down switching signal indicating whether to increase or decrease s103 of the moving image code.

Furthermore, in the first embodiment and the first and second modifications thereof, the image to be displayed is assumed to be a graphic.
The present invention is applicable not only to figures but also to images such as pictures and characters.

[0075]

As described above, according to the image display device of the first aspect of the present invention, the image display device for displaying a still image or a moving image by switching a plurality of still images is displayed on the display screen. Display code of the image displayed in
A first memory for storing control data including at least a moving image / still image selection signal indicating whether or not the image indicated by the display code is a moving image, and display data for all images displayed on the display screen. And a decoding circuit for reading the control data from the first memory and outputting the display code and the moving image / still image selection signal, and a counted vertical synchronization signal. Receives an increment signal that is output when the value of becomes a certain set value, counts the increment signal based on the number of images used for the set moving image, increases, decreases,
Alternatively, the count value that is cyclically repeated is
A video code generation circuit that outputs a video code, and an initial display code that is a display code used when a still image is displayed from the above display code using the initial value of the above video code, and a video display using the above video code And a selector that selects one of the moving image display code and the initial display code based on the moving image still image selection signal. And an address generation circuit for receiving the display code selected by the selector and outputting the address of the second memory storing the display data corresponding to the display code. The computer can set the first display image and display the moving image without controlling the subsequent moving image display. Can, to reduce the burden of the micro-computer, it is possible to increase the performance of the entire apparatus. In addition, it is possible to display moving images and still images separately on a single screen, and the microcomputer can set the moving speed and the number of moving images at the beginning to control the moving speed of the moving images. It is possible to stop the moving image at the set number of moving image screens, repeat the moving image at the set number of moving image screens, or display the moving image having the opposite motion.

According to the image display device of the second aspect of the present invention, in the image display device of the first aspect, the number of images used in the moving image code generation circuit is set. In the register that stores the number of images, the comparator that compares the number of images stored in the register with the value of the moving image code, and if the number of images does not match the value of the moving image code in the comparator, the value is input. The increment signal is counted up, and when the number of images and the value of the moving image code match, counting is stopped, and a binary counter whose output is the moving image code is provided. It is possible to manage the operation of stopping the count-up by the specified value on the image display device side and stop the operation. It is possible to provide a device for displaying without placing a burden to Yuta.

According to the image display device of the third aspect of the present invention, in the image display device of the first aspect, the number of images used for the set moving image by the moving image code generation circuit. In the register that stores the number of images, the comparator that compares the number of images stored in the register with the value of the moving image code, and if the number of images does not match the value of the moving image code in the comparator, the value is input. The increment signal is counted up, and when the number of images and the value of the moving image code match, the count is reset, and a binary counter whose output is the moving image code is provided. Counts up to the specified value, resets the set value, and returns to "0"
From the above, the operation of counting up from the above set value can be managed and repeated on the side of the image display device, and a device that displays a moving image that repeats the movement with a preset number of moving images without burdening the microcomputer is provided. Can be provided.

Further, according to the image display device described in claim 4 of the present invention, in the image display device described in claim 1, the number of images used for the set moving image by the moving image code generation circuit. A register for storing, a detector for detecting that the video code has a predetermined numerical value, and counting down the increment signal that is input when the output of the detector does not indicate detection of the predetermined numerical value, When the output of the detector indicates the detection of a predetermined numerical value, the number of images stored in the register is preset, and the binary down counter having the output as the moving image code is provided. The operation of counting down from 0 to “0”, presetting again to the set value, and counting down to “0” can be managed and repeated on the image display device side. Come, it is possible to provide a device for displaying without burdening the video repeating movement to reverse the micro Kopyuta in the number of preset video.

The image display method according to claim 5 of the present invention is a display code of an image to be displayed in the image display method for displaying a still image or a moving image by switching a plurality of still images, Control data including at least a video still image selection bit indicating whether or not the image to be displayed is a moving image, moving image speed data indicating the timing of switching the moving image, and moving image control data indicating the number of images used for the moving image, A data input step of inputting, a count start step of starting counting of the vertical synchronizing signal, an initial value of the moving picture code is created, and an initial display code created by the initial value of the moving picture code and the display code is shown. Initial screen display step of displaying the image on the display device, and reset every time the vertical sync signal is counted up to the value of the moving picture speed data An increment signal output step of outputting an increment signal, and a moving image code generation step of determining whether the moving image code at that time is a predetermined value each time the increment signal is received and generating a moving image code according to the determination result. A moving picture display code generating step of generating a moving picture display code which is a display code used when displaying a moving picture from the initial display code using the moving picture code, and displaying the moving picture based on the moving picture still picture selection bit. A selection step of selecting one of the code and the initial display code, and an image display step of displaying an image indicated by the display code selected in the selection step on a display device, and the increment signal output A loop is formed between the step and the image display step, and In the code generation step, if the determination result does not match, the moving image code at the time point is incremented by +1 or -1, and if the determination result is matched, the moving image code at the time point is returned to the initial value. The display code is incremented or decremented for a certain period of time by counting the vertical synchronization signals, and this is repeated, so the images corresponding to the display code are also switched one after another, and the preset number of moving images without burdening the microcomputer. You can display a moving image with.

According to the image display method of the sixth aspect of the present invention, in the image display method for displaying a still image or a moving image by switching a plurality of still images,
Control code including at least a display code of an image to be displayed and a moving image still image selection bit indicating whether or not the image to be displayed is a moving image, moving image speed data indicating a timing for switching the moving image, and used for the moving image. A data input step of inputting moving image control data indicating the number of images, a count start step of starting counting of the vertical synchronizing signal, an initial value of the moving image code, and an initial value of the moving image code and the display code. The initial screen display step of displaying the image indicated by the initial display code created on the display device, and the increment signal output step of resetting each time the vertical synchronization signal is counted up to the value of the moving picture speed data and outputting the increment signal. Every time the above increment signal is received, it is determined whether the video code at that time is a predetermined value. A video code generation step for generating a video code according to the determination result, and a video display code generation for generating a video display code which is a display code used when displaying a video from the initial display code using the video code. A step, a selection step of selecting one of the video display code and the initial display code based on the video still image selection bit, and an image indicated by the display code selected in the selection step. And an image display step for displaying, and forming a loop between the increment signal output step and the image display step, the moving image code generating step, if the determination result does not match, at the time point If the video code is incremented by +1 or -1 and the above judgment results are in agreement, the video at that point Since the code is stopped at that value, the display code is increased or decreased at a certain time by counting the vertical sync signal, and the increase or decrease is stopped at the set numerical value, so it corresponds to the display code. The images to be displayed are also switched one after another until the counter stops, and a moving image that stops moving can be displayed with a preset number of moving images without burdening the microcomputer.

[Brief description of drawings]

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

FIG. 2 is a diagram specifically showing an example of a moving image display according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing a configuration of a moving image code generation circuit 103 that outputs a moving image code that stops at an increasing predetermined value according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing a series of operations of a display image control unit when displaying a graphic in the image display device according to the first embodiment of the present invention.

FIG. 5 is a block diagram showing an internal configuration of a moving picture code generation circuit that outputs a moving picture code that repeatedly increases up to a predetermined value according to a first modification of the first embodiment of the present invention.

FIG. 6 is a flowchart showing a series of operations of a display image control unit in the case of displaying a figure in the image display device of the first modification of the first embodiment of the present invention.

FIG. 7 is a block diagram showing an internal configuration of a moving picture code generation circuit that outputs a moving picture code that repeatedly decreases from a predetermined value according to a second modification of the first embodiment of the present invention.

FIG. 8 is a block diagram showing an internal configuration of a moving picture code generation circuit according to the first embodiment of the present invention, which outputs a moving picture code that stops or repeats at a predetermined increase or decrease to a predetermined value. .

FIG. 9 is a block diagram showing a configuration of a conventional image display device.

FIG. 10 is a diagram showing a specific example of an image stored in advance in a ROM.

[Explanation of symbols]

100,600 Display image control unit 101 CRT 102 Video speed setting circuit 103, 103a, 103b, 103c Video code generation circuit 104 Adder 105 Selector 106 Display RAM 107 Display decoding circuit 108 Display position control circuit 109 ROM address generation circuit 110 ROM 111 Display circuit 201 Video number register 202, 302 Comparator 203 AND circuit 204 Binary counter with reset 301, 402 OR circuit 401 Detector 403 Binary down counter with preset 501 Display code 502 Video still image selection bit 503 Initial screen 504, 505 Screen 701 , 702, 703, 704, 705, 706 images

Claims (6)

[Claims] 1. An image display device for displaying a still image or a moving image by switching a plurality of still images, wherein a display code of an image displayed on a display screen and an image indicated by the display code are used as a moving image. A control data including at least a moving image / still image selection signal indicating whether or not
Memory, a second memory in which display data of all images displayed on the display screen are stored in advance, the control data is read from the first memory, and the display code and the moving image are read. A decode circuit that outputs a still image selection signal and an increment signal that is output when the value of the counted vertical synchronizing signal reaches a certain set value, and the increment is performed based on the number of images used for the set moving image. When a still image is displayed using the initial value of the video code from the display code, which counts signals and outputs the count value that is incremented, decremented, or cyclically repeated as a video code. The initial display code that is the display code used for and the display code that is used when displaying a video using the above video code An adder for generating a video display code, a selector for selecting one of the video display code and the initial display code based on the video still image selection signal, and the display selected by the selector. Receive the code,
An image display device, comprising: an address generation circuit that outputs an address of the second memory that stores display data corresponding to the display code. 2. The image display device according to claim 1, wherein the moving picture code generation circuit stores a register for storing the number of images used for the set moving picture, the number of images stored in the register, and the register. When the number of images does not match the value of the moving image code in the comparator that compares the value of the moving image code, the increment signal that is input is counted up, and the number of images and the moving image code And a binary counter having the output as the moving image code, the image display device. 3. The image display device according to claim 1, wherein the moving picture code generation circuit stores a register for storing the number of images used for the set moving picture, the number of images stored in the register, and the register. When the number of images does not match the value of the moving image code in the comparator that compares the value of the moving image code, the increment signal that is input is counted up, and the number of images and the moving image code And a binary counter having the output as the moving image code, the image display device characterized by comprising: 4. The image display device according to claim 1, wherein the moving picture code generation circuit has a register for storing the number of images used for the set moving picture, and the moving picture code has a predetermined numerical value. And a detector that detects, and counts down the increment signal that is input when the output of the detector does not indicate detection of a predetermined numerical value, and the register when the output of the detector indicates detection of a predetermined numerical value. An image display device, comprising: a binary down counter that presets the number of images stored in, and uses the output as the moving image code. 5. An image display method for displaying a still image or a moving image by switching a plurality of still images, and a moving image still image indicating a display code of an image to be displayed and whether or not the displayed image is a moving image. Image selection bits, control data including at least the video selection data, video speed data that indicates the timing to switch the video, and video control data that indicates the number of images used for the video. A count start step for starting, an initial value of a moving image code is created, an initial screen displaying step of displaying an image indicated by the initial display code created by the initial value of the moving image code and the above display code on a display device, and a vertical screen An incremental signal that resets the sync signal each time it counts up to the value of the video speed data and outputs an increment signal. A video signal generation step of generating a video code according to the judgment result, and determining whether the video code at that time is a predetermined value each time the increment signal is received. , A video display code generation step of generating a video display code which is a display code used when displaying a video from the initial display code, and the video display code and the initial display code based on the video still image selection bit. And an image display step of displaying an image indicated by the display code selected in the selection step on a display device, the increment signal output step and the image display step A loop is formed between the above, and the above judgment result is not If 致 the video code at that time +1 or -1
If the determination result is a match, the moving image code at that point is returned to the initial value. 6. An image display method for displaying a still image or a moving image by switching a plurality of still images, and a moving image still image indicating a display code of the image to be displayed and whether or not the displayed image is a moving image. Image selection bits, control data including at least the video selection data, video speed data that indicates the timing to switch the video, and video control data that indicates the number of images used for the video. A count start step for starting, an initial value of a moving image code is created, an initial screen displaying step of displaying an image indicated by the initial display code created by the initial value of the moving image code and the above display code on a display device, and a vertical screen An incremental signal that resets the sync signal each time it counts up to the value of the video speed data and outputs an increment signal. A video signal generation step of generating a video code according to the judgment result, and determining whether the video code at that time is a predetermined value each time the increment signal is received. , A video display code generation step of generating a video display code which is a display code used when displaying a video from the initial display code, and the video display code and the initial display code based on the video still image selection bit. A selection step of selecting one of the above, and an image display step of displaying an image indicated by the display code selected in the selection step on a display device, the increment signal output step and the image display step A loop is formed between the above, and the above judgment result is not If 致 the video code at that time +1 or -1
Then, if the determination results are in agreement, the moving image code at that time is stopped at that value, the image display method.