KR960010730B1 - Method and apparatus for controlling image display - Google Patents

Abstract

No content.

Description

[Name of invention]

Image display control method and device

[Brief Description of Drawings]

1 is a diagram showing a character display pattern obtained by a conventional image display method.

2 is a diagram showing an apparatus for performing an image display control method according to an embodiment of the present invention.

3 is a diagram showing a character display pattern obtained by the image display control method according to the present invention.

4 is a diagram showing the basic procedure of the image display control method according to the present invention.

5 is a diagram showing an example of a flowchart of a process of an image display control method according to the present invention;

6, 7, 8, and 9 all show an example of signal waveforms in the image display control method according to the present invention.

10 is a view showing an example of a display screen to be displayed in the image display control method according to the present invention.

Fig. 11 is a diagram showing an example of peripheral region formation, edge formation, and inverted character display pattern in the image display control method according to the present invention.

12 is a diagram showing the basic configuration of an image display apparatus according to the present invention.

Fig. 13 is a diagram showing the basic configuration of an image display device according to the present invention.

Fig. 14 is a diagram showing the configuration of an image composite display device as one embodiment of the present invention.

15 is a diagram showing the configuration of an image display control device according to an embodiment of the present invention.

Detailed description of the invention

[Technical Field]

The present invention relates to an image display control and an image composition display method and apparatus.

The method and apparatus according to the present invention can be applied to an apparatus for softening or inverting character data, such as an on-screen display controller for displaying a character or a figure on a screen, a method thereof, and an application thereof. Can be.

[Prior art]

In recent years, in the field of image processing such as computers and televisions, there has been a demand for high functional and multifunctional OSD controllers for displaying and processing characters and graphics on display screens. However, according to the conventional on-screen display controller, when a character or a figure is synthesized and displayed on the display screen, the dot data of the character data (character data, font data) constituting the character by the background color of the display screen, etc. An edge forming process of interpolating the points or an inversion process of changing the background color and the character display color is performed.

According to this, the character data read out from the image display circuit is data-processed by the edge forming circuit or the inversion circuit, and the edge-forming character display pattern or the reverse character display pattern processed by this data is selectively outputted to the image processing apparatus of the next stage. However, there are cases where characters displayed on a cursor display or a television screen in computer image processing are affected by the background color or the like and cannot be clearly and clearly recognized. For this reason, there is a demand for display characters diversified according to the user's usage. In the conventional display method by soft formation processing or inversion processing, there is a problem in that the display character pattern is limited and sufficient character display cannot be performed.

Therefore, it is desired to obtain an apparatus, a method, and an application apparatus capable of diversifying display characters by studying soft forming and inversion processing.

An example of the character display pattern obtained by the conventional image processing method is shown in FIG. In FIG. 1, the screen of a television is shown. The dashed line hatching shows the text color, and the solid line hatching shows the color of soft formation.

For example, in FIG. 1, when the character display pattern P11 'of the alphabet or the character display pattern P12' in which the character surrounding area is defined is subjected to soft formation or inversion, the inverted character display pattern P31 ' ), The peripheral region forming inverted character display pattern P32 'and the soft forming character display patterns P21' and P22 'are obtained.

The inverted character display pattern P31 'is obtained by inverting data "1" or white of the character display pattern of the character display pattern P11' into "0" or black.

Peripheral Area Inversion The inverted character display pattern P32 'changes the data "1", that is, white and the data "0", or black, of the character display pattern portion of the character display pattern P12' in which the character peripheral area is defined. It is set.

Thereby, display processing on the display screen can be performed by six types of character display patterns including the unprocessed character display pattern P11 'or the character display pattern P12' in which the character surrounding area is defined.

According to a conventional on-screen display controller or the like, when a character or a figure is synthesized and displayed on a display screen, an inversion process in which the background color and the character display color are changed by the background color of the display screen or the like is performed. According to this, the character dot pattern data read out from the image display circuit is subjected to data processing by the edge forming circuit or the inversion circuit so that the reverse character display patterns P31 'and P32', the edge forming character display pattern P21 ', etc. Selective output is performed by an image synthesis processing device or the like.

However, there are cases where the characters displayed on the cursor display or the television screen in the computer image processing are affected by the background color or the like and cannot be clearly and clearly recognized. For example, if the background color is white and the display pattern is white, the characters cannot be clearly recognized. For this reason, there is a demand for display characters that can be clearly and clearly recognized without causing the characters on the display screen to be affected by the background color or the like according to the user's use mode. In addition, as shown in FIG. 1, in the conventional display method by soft formation processing or inversion processing, character display patterns are limited to, for example, about six types, and sufficient display is not possible.

[Initiation of invention]

SUMMARY OF THE INVENTION In view of the problems in the prior art described above, an object of the present invention is to create a multi-character display pattern by combining these processes instead of performing the soft forming process and the inversion process depending on a simple selection process. An object of the present invention is to provide a method and apparatus for image display control and image composition display that enable diversification.

In the present invention, as a basic form, one or more types of character display patterns (P11, P12) are generated and subjected to edge formation of the character display patterns (P11, P12) to generate soft-formed character display patterns (P21). An inversion process is performed in which the display color and the background color of the character display patterns P11 and P12 or the soft-formed character display patterns P21 and P22 are changed, and the character display patterns P11 and P12 and the soft-formed character display patterns are subjected to the inversion process. There is provided an image display control method which performs selective output processing of (P21, P22), inverted character display patterns (P31, P32), or soft-form inverted character display patterns (P41, P42).

An apparatus for performing the image display control method according to the present invention includes an image display means 2, a first edge forming means 111, a first selecting means 131, a first inverting means 121, and a control means 15. Is equipped.

For example, when one or more types of character display data D1 are output by the image display means 2 to the first edge forming means 111 and the first selection means 131 according to an external control signal, the character display data ( D1) is first subjected to edge formation by the first edge forming means 111. It is output to the first selecting means 131 as the soft-formed character display data D2. The edge forming character display data D2 is inverted by the first inverting means 121 by the selection process of the first selecting means 131. It is output as soft formation inversion character display data D4. The character display data D1 by the selection process of the first selecting means 131 is inverted by the first inverting means 121, and it is output as the inverted character display data D3.

Thereby, through the control means 15, selective output of the character display data D1, the soft-formed character display data D2, the inverted character display data D3, or the soft-formed inverted character display data D4 is performed.

Therefore, instead of relying on soft selection processing and reversal processing as in the conventional simple selection process, a combination of these processes can be used to create various types of character display patterns, thereby making it possible to diversify display characters. In the apparatus for performing the image display control method according to the present invention, the second inverting means 122, the second selecting means 132, and the second edge forming means 112 are provided.

For example, when the inverted character display data D3 is output by the second inverting means 122 by the character display data D1, the inverted character display data D3 and the character display data D1 are output by the second selection means. Is selected by 132. Here, the selected output character display data D1 or inverted character display data D3 is soft-formed by the second soft-forming means 112, so that the soft-character display data D2 or soft-reversed character display data is displayed. It is output as (D4). Therefore, various kinds of character display patterns can be created, which makes it possible to diversify display characters.

Further, in the image display control method according to the present invention, the display color of the character display pattern P11 or the soft-formed character display pattern P21 in step S3 after the preparation processing of the edge-formed character display pattern P21 in step S2. Inverted with different background and background colors.

Therefore, the edge formation in which the display color and the background color of the character display pattern P11 are the same color and the outer and inner circumferences of the character display pattern P11 are surrounded by the edge formation display of the display color other than the same system color. The inversion character display pattern P41 can be generated.

Therefore, the characters displayed on the cursor display or the television screen in computer image processing can be clearly and clearly recognized without being affected by the background color.

This means that when the background color is white and the display pattern is white, the outer and inner circumferences of the display pattern (P11) are surrounded by display colors other than the white system, for example black soft formation. . This makes it possible to improve the resolution, recognition degree, and the like of the display character pattern.

After the generation processing of one or more types of character display patterns P11, first, an inversion process of changing the display color and the background color of the character display pattern P11 is performed, followed by the soft formation interpolation process using the inverted character display patterns P11. The same effect can be obtained even if it is performed. In addition, a combination of inversion processing, soft formation, and interpolation processing can generate a variety of character display patterns.

In the image composition display apparatus according to the present invention, an image display control means 1 and an image composition means 5 are provided, and the image display control means 1 is provided with first and second image display control devices.

For example, 8 or more types of character display data such as character display data (D1), soft-form character display data (D2), inverted character display data (D3), and soft-form inverted character display data (D4) by external control signals ( D1, D2, D3, ... are selectively outputted from the first and second image display control devices serving as the image display control means 1 to the image synthesizing means 5. In the image synthesizing means 5, character display data (D1, D2, D3, ...) and external image input data (D (INPUT)) are synthesized and the composite image output data (D (OUTPUT)) is next-stage. Display device of eg output to CRT device.

Therefore, the display processing of characters or figures can be executed by the soft forming color corresponding to the background color of the display screen of the display device, etc., and the display characters are diversified to respond to the user's request. Therefore, an on-screen display controller that performs high quality character display processing can be obtained.

In the present invention, means 266, 267, 270 for outputting area display data indicating the area color, image display means 2 for outputting one or more types of character display data by an external control signal, and data representing the same color as the area color are used. An image display control apparatus may be provided comprising means for converting the character display data and first edge forming means 111 for outputting the soft-formed character display data by the character display data.

Best Mode for Carrying Out the Invention

2 shows an apparatus for performing an image display control method as one embodiment of the present invention.

In FIG. 2, an image display control apparatus such as an on-screen display controller for displaying characters or figures on a display screen is provided with a display control circuit 1 and an image display circuit 2.

The image display circuit 2 includes a row address counter 201, an open counter 202, a video RAM 203, a character ROM 204, and a parallax serial converter circuit 205, which are examples of image display means. Equipped.

The image display circuit 2 includes a shift clock CLK, a horizontal synchronization signal HS, a vertical synchronization signal VS, and display control signals C1, C2, C3, which are examples of external control signals. ...) outputs one or more types of character display data (D1).

The character display data D1 is stored in the character ROM 204. As an example, the character display pattern of the alphabet "A, B, C, ... G" whose row address X column address is 10x24 is shown in FIG.

The display control circuit 1 includes a first edge formation processing circuit 111, a first selection circuit 131, a first inversion processing circuit 121, a data selection output circuit 19, and a control device 15. .

The first edge forming processing circuit 111 is an example of the first edge forming means and forms edges by the display control signals C1, C2, C3, ... from the control device 15 and the character display data D1. Outputs the character display data D2.

The first selection circuit 131 is an example of the first selection means, and is displayed by the display control signals C1, C2, C3, ... from the control device 15, the character display data D1 or the soft-form character display data. Selective output of (D2). The first inversion processing circuit 121 is an example of the first inversion means, and is inverted by the display control signal from the control device 15 and the character display data D1 or the soft-form character display data D2. D3) or the soft-form inverted character display data D4. The data selection output circuit 19 displays the character display data D1, the soft-formed character display data D2, and the inverted character display by the display control signals C1, C2, C3, ... from the control device 15. Selectively output the data D3 or the soft-form inverted character display data D4.

The control device 15 is an example of a control means, and includes an image display circuit 2, a first edge formation processing circuit 111, a first selection circuit 131, a first inversion processing circuit 121, and a data selection output circuit. The input / output of (19) is controlled. The operation of the apparatus for performing the image display control method as one embodiment of the present invention will be described with reference to FIG. 6, 7, 8, and 9. FIG.

The relationship between the character display pattern, the display signals W1 and B1, and the display control signal C1 is shown in FIG.

In FIG. 6, P11 is a character display pattern and is a pattern displayed by character dot pattern data stored in the character ROM 204 of the image display circuit 2. For example, in the character display pattern P11 for displaying the alphabet " 0 " on the display device or the like, the character display pattern portion becomes white and its peripheral region becomes negative. That is, the white signal W1 in the raster directions X1-Y1 of the display pattern P11 becomes HIGH level and the black signal B1 becomes LOW level. When displaying it on a display device or the like, the display control signal C1 becomes LOW level.

Therefore, the letter " 0 " can be superimposed on the screen displayed by the display device or the like. In addition, the negative part of the peripheral area becomes the background color of the screen displayed by the display device or the like. The relationship between the character display pattern for explaining the inversion process, the display signals W2 and B2, and the display control signal S2 is shown in FIG.

In FIG. 7, P32 is the inverse character formation inverted character display pattern and has a white pattern in the periphery area of the character display pattern portion. In the peripheral area formation inverted character display pattern, the data "1" of the character display pattern part in which the character peripheral area is defined, that is, white, and the data "0", or black, of the character area part are replaced. In other words, it is inverted. During the period in which the white signal W2 in the raster direction X2-Y2 of the display pattern P32 is at the HIGH level, the black signal B2 is at the LOW level, whereas the white signal W2 is at the LOW level. During the period, the black signal B2 becomes HIGH level. The rising and falling of the white signal W2 when displaying it on the display device or the like is controlled by the HIGH or LOW level of the display control signal C2.

Thereby, the alphabet "0" shown in black in the white region can be superimposed on the display in the display device or the like. 8 shows the relationship between the character display pattern for explaining the edge forming process, the display signals W3 and B3, and the display control signal C3.

In FIG. 8, P21 is an edge forming character display pattern and has an edge forming pattern in the outer and inner peripheral portions of the character display pattern portion. The soft-formed character display pattern 121 is formed by adding black "black" formation pattern data "0", i.e. black, to the data "1" of the character display pattern portion of the character display pattern P11 shown in FIG. It was processed. The black signal B3 adds the HIGH level to both of the periods during which the white signal W3 in the raster direction X3-Y3 of the display pattern P21 is at the HIGH level.

When it is displayed on a display device or the like, the display control signal C3 becomes LOW level. Thereby, the alphabet "0" softly formed in black can be superimposed on the display in the display device or the like. The peripheral area of the outer circumference becomes the background color of the screen displayed on the display device or the like.

The relationship between the displayable character display pattern, its display signals W4 and B4 and the display control signal S4 is shown in FIG. In FIG. 9, P41 denotes a periphery region forming edge forming inverted character display pattern and has an edge forming pattern at the outer and inner periphery portions of the character display pattern having a white pattern in the peripheral region. This soft-formed inverted character display pattern P41 adds black soft-formed pattern data "0" or black to data "1" of the character display pattern of the soft-formed character display pattern P21 shown in FIG. The pattern data of the peripheral area becomes "1", that is, white.

In other words, in the display pattern P41, the HIGH level of the black signal B4 is added to both of the HIGH level periods of the white signal W4 in the raster direction X4-Y4. The rising and falling of the white signal W4 when displaying it with a display device or the like is controlled by the HIGH or LOW level of the display control signal C4. Thereby, the alphabet "0" softly formed in black in the white region can be displayed on the display in the display device or the like.

Therefore, one or more characters are generated by the external control signal CLK, the horizontal synchronizing signal HS, the vertical synchronizing signal VS, and the display control signals S1, S2, S3, ... from the control device 15. When the display data D1 is output by the image display circuit 2 to the first edge formation processing circuit 111 and the first selection circuit 131, the character display data D1 is firstly formed into a first edge formation processing circuit ( 111) soft bridging treatment. It is output to the first selection circuit 131 as the soft-form character display data D2. Here, the soft-formed character display data D2 is inverted by the first inversion processing circuit 121 by the selection processing of the first selection circuit 131. It is output as formation inversion character display data D4. The character display data D1 by the selection process of the first selection circuit 131 is inverted by the first inversion processing circuit 121. It is output as inverted character display data D3.

Thereby, the selective display of the character display data D1, the soft-formed character display data D2, the inverted character display data D3, or the soft-form inverted character display data D4 can be performed via the control device 15.

Therefore, instead of relying on soft selection processing and reverse processing as in the conventional example, it is possible to create various kinds of character display patterns by combining these processes. This makes it possible to diversify display characters.

5 is a flowchart of an image display control method as an example of the present invention. For example, in the case of obtaining a peripheral area forming edge forming inverted character display pattern P42 as shown in FIG. 11, in the flowchart of FIG. 5, in step S11, the character display pattern of the alphabet " 0 " The generation process of P12) is performed. Character display pattern P11 of alphabet "0" via the video RAM 203, the character ROM 204, and the paraller conversion circuit 205 by the addresses generated by the row address counter 201 and the open address 202. Character display data D1 by P12 is output (FIG. 2).

In step S12, selection processing of the soft forming process mode or the inversion process mode is performed. When the soft formation process mode is selected (YES), the process moves to step S13, and when the inversion process mode is selected (NO), the process proceeds to step S15.

The edge formation processing mode is selected, and in step S13, the edge formation and interpolation processing of the character display pattern P11 is performed to create the edge formation character display pattern P21. In the first edge formation processing circuit 111, the edge formation character display data D2 is output by the display control signal C3 and the character display data D1 from the control device 15. 8, the relationship between the white signal W3, the black signal B3, and the display control signal C3 of the soft-form character display pattern P21 can be referred to.

Thereafter, the selection of the pattern synthesizing process is performed in step S14. If the synthesis process is selected (YES), the process proceeds to step S18, and if the composition process is not selected (NO), the process proceeds to step S19.

When the inversion processing mode is selected, in step S15, an inversion process in which the display color and the background color of the character display patterns P11 and P12 are changed is performed to generate the inversion character display patterns P31 and P32. The first inversion processing circuit 121 outputs the inverted character display data D3 by the display control signal C2 and the character display data D1 from the control device 15. For example, reference may be made to FIG. 7 regarding the relationship between the white signal W2, the black signal B2, and the display control signal C2 of the inverted character display pattern P31.

In step S16, it is determined whether or not to shift to the soft forming process mode. If it is shifted to the soft formation processing mode (YES), the process moves to step S13, and if it is not shifted to the soft formation processing mode (NO), the process proceeds to step S17.

In the case of shifting to the soft formation processing mode (YES), in step S13, the inversion formation character display pattern P41 is created by the edge formation and interpolation processing of the inversion character display pattern P32.

In step S14, selection of the pattern synthesizing process is made. If the compounding process is selected (YES), the process moves to step S18, and if the compounding process is not selected (NO), the process moves to step S19. If it is not shifted to the soft formation processing mode in step S16 (NO), the selection judgment of the pattern synthesizing process is performed in step S17. If the synthesis process is selected (YES), the process proceeds to step S18, and if the composition process is not selected (NO), the process proceeds to step S19.

Therefore, in step S18, the generation process of the peripheral region forming edge forming inverted character display pattern P41 is performed by the edge forming character display pattern P21 and the reverse character display pattern P31. The first inversion processing circuit 121 outputs the soft forming inverted character display data D4 by the display control signal C4 from the control device 15 and the soft forming character display data D2.

9, the relationship between the white signal W4, the black signal B4, and the display control signal C4 of the peripheral region forming edge forming inverted character display pattern P42 may be referred to. In step S19, the selective output processing of the patterns P11, P12, P21, P31, P41, and P42 is performed. In the data selection output circuit 19, character display data D1, edge formation data D2, and inverted character display data are generated by display control signals C1, C2, C3, ... from the control device 15. (D3) or the soft-form inverted character display data (D4) is selectively outputted.

Thereby, seven types of character display patterns including the peripheral area formation edge formation inversion character display pattern P42 can be obtained. As shown in FIG. 11, the display region P42 of the peripheral region forming edge forming inverted character display pattern P11 is the display color of the character display pattern P11, that is, the background color of the peripheral region, that is, the same color as white, and the character display pattern P11. The outer periphery and the inner periphery of) are surrounded by non-white, for example, display color, i.e., black, edge-formed display patterns. The background color at this time is different from the background color displayed on the cursor display or television screen in computer image processing.

In this manner, after the creation process of the soft-formed character display pattern P21 in step S13, an inversion process is performed in which the display color and the background color of the character display pattern P12 are changed in step S15.

For this reason, the display color of the character display pattern P1 shown in FIG. 11 is the color of the same system, and the edge formation display of the display color other than the color of the system of the outer periphery and the inner periphery of this character display pattern P1 is shown. The generation process of the peripheral region forming edge forming inverted character display pattern P42 surrounded by the pattern can be performed.

By using the peripheral area forming inverted character display pattern P42, the characters displayed on the cursor display or on the television screen are not influenced by the background color or the like in computer image processing, and it is possible to clearly and clearly recognize them.

For example, when the background color is white and the display character pattern P11 is white, the outer and inner circumferences of the display character pattern P11 are display colors other than the white color, for example, black soft formation display pattern. Surrounded by This makes it possible to improve the resolution, recognition degree, and the like of the display character pattern.

15 shows an apparatus for performing image display control as another embodiment of the present invention.

In Fig. 15, the position of the edge formation processing circuit is changed to precede the inversion processing of the display character pattern P11. In FIG. 15, 122 is a second inversion processing circuit as the second inversion means, and outputs the inverted character display data D3 by the character display data D1. 132 is a second selection circuit as the second selection means and selectively outputs the character display data D1 or the inverted character display data D3. 112 is a second edge forming circuit as second edge forming means and outputs edge forming character display data D2 or edge forming inverted character display data D4 by character display data D1 or inverted character data D3. .

In the apparatus for performing the image display control, the display control circuit 1 is provided with a second inversion processing circuit 122, a second selection circuit 132, and a second edge formation processing circuit 22B.

For example, when the inverted character display data D3 is outputted by the second inversion processing circuit 122 by the character display data D1, the inverted character display data D3 and the character display data D1 are selected by the second selection. Selection is performed by the circuit 132. Selected output character display data D1 or inverted character display data D3 is soft-formed by the second soft-forming processing circuit 112, soft-character display data D2 or soft-reversed character display data D4. Is output as

For this reason, after generating one or more types of character display patterns P11, first, an inversion process of changing the display color and the background color of the character display pattern P11 is performed, followed by soft formation interpolation processing of the inverted character display patterns. Can be. 13 shows a basic configuration of an apparatus for performing the image composition display method according to the present invention.

The apparatus in FIG. 13 is an image display control means 1, which outputs character display data, an input image generation means 4, which outputs input image data such as a background color, video data, and an image synthesizing means 5; And outputting the composite output image data.

As an embodiment of the present invention, an apparatus for performing the image composition display method is shown in FIG. In FIG. 14, an image synthesizing apparatus such as an on-screen display controller for displaying characters or figures on a screen includes an image display control block 26, a video synthesizing circuit 27, a signal input block 28, and a vertical position control. A block 29, a horizontal position control block 30, a display size control block 31 and a synchronous control block 32 are provided.

The image display control block 26 is image display means, and an image display control device is incorporated. The image display control block 26 displays the character display data D1, D2, D3, ... by the external control signals CLK, CS, S1, the horizontal synchronization signal HS, and the vertical synchronization signal VS. Output to the synthesis circuit 27.

The image display control block 26 includes a display memory addresser 261 as an example of the open addresser 202, a read addresser 262 as an example of the hanger addresser 201, and a switching circuit for switching between them. 263, display memory RAM 264 as an example of video RAM 203, timing generator 265 for controlling their output timing, character generator ROM 266 as an example of character ROM 204, and para. The 8-bit shift register 267, which is an example of the real serial conversion circuit 205, the screen control register 268 that performs character display control by the external control signals CLK, CS, and S1, and the flashing display control. A blinking control circuit 269 and a display control circuit 270 are provided.

The character generator ROM 266, the 8-bit shift register 267, and the display control circuit 270 generate area display data indicating the area color.

The video synthesizing circuit 27 is an example of the image synthesizing means 5. The composite image output data D (OUTPUT) is output by the character display data D1, D2, D3, ... and the external image input data D (INPUT). The signal input block 28 includes a serial parallax conversion circuit 281, an 8-bit latch circuit 282, a switching circuit 283, and a command decoder 284, and displays command data or indications for 8-bit serial transmission. The data is serially paralled and fed to each block.

The vertical position control block 29 includes a vertical position register 291 and a vertical position control circuit 292 and controls the display start position in the vertical direction of the screen by the vertical synchronization signal VS. The horizontal position control block 30 includes a horizontal position register 301 and a horizontal position control circuit 302 and starts displaying in the horizontal direction of the screen by an external control signal CLK generated by the horizontal synchronization signal HS. The position is controlled.

The display size control block 31 includes vertical and horizontal character size registers 311 and vertical and horizontal character size control circuits 312. The display control data is used to display the horizontal, horizontal and vertical directions of the display characters. Direction).

The synchronous control block 32 includes a synchronous separation control circuit 321, a dot clock generation circuit 322, a synchronous detection circuit 323, a synchronous signal generator 324, a simple video signal generator (NTSC) 325, and color burst. A clock generator 326 is provided and separates or detects the horizontal synchronous signal HS and the vertical synchronous signal VS from the NTSC-type complex synchronous signal, or generates an external control signal CLK serving as a reference signal for character display. It is to let.

For example, the external control signal CLK is used to control the stopping or resumption of oscillation of the color carrier when synchronizing the color phase of the video signal.

A simple video signal generator 325 generates an NTSC synchronization signal, that is, a horizontal synchronization signal (HS) and a vertical synchronization signal (VS), and an internally generated video signal from a 7.15909 MHz clock generated by the color burst clock generator 326. do.

In the apparatus of FIG. 14, an image display control block 26, a video synthesis circuit 27, a signal input block 28, a vertical position control block 29, a horizontal position control block 30, and a display size control block 31 are shown. And a synchronous control block 32, and an image display control device is built in the image display control block 26.

For example, the character display data (D1), the soft-form character display data (D2), the inverted character display data (D3), and the edge due to the external control signal CLK, the horizontal synchronization signal HS, and the vertical synchronization signal VS. Seven or more types of character display data (D1, D2, D3, ...), such as the inverted character display data (D4), are formed by the image display control block (26) by the image display control block (26). The output is selected by). In the video synthesizing circuit 27, these image processed data (D1, D2, D3, ...), unprocessed character display data and external image input data (D (INPUT)) are synthesized and synthesized. D (OUTPUT)) is output to the next stage display device, for example a CRT device.

For this reason, display processing of characters, figures, and the like can be executed by the soft forming color in accordance with the background color of the display screen of the display device or the like.

As a result, display characters can be diversified and the user's use request can be responded to.

Therefore, an on-screen display controller that performs high quality character display processing can be obtained.

In the method and apparatus for image display control according to the present invention, image display means, first or second edge forming means, first or second selection means, first or second inverting means and control means are used, and character display data and edge forming are used. Character display data Selective output of inverted character display data or soft-form inverted character data can be performed. For this reason, instead of relying on soft selection processing and inversion processing as in the conventional simple selection processing, it is possible to create various types of character display patterns by combining these processes. Therefore, the display characters can be diversified.

In the method and apparatus for image display control according to the present invention, after the process of creating the soft-formed character display pattern, the reverse process of changing the display color and the background color of the character-display pattern or the soft-formed character display pattern is performed. After that, soft forming and interpolation are performed on the inverted character display pattern. For this reason, the combined processing of the inversion processing and the edge forming interpolation processing can be performed to generate the peripheral region forming inverted edge forming character display pattern. Therefore, the characters displayed on the cursor display or the television screen in the computer image processing can be clearly and clearly recognized without being influenced by the background color. In the image display control and image composition display method and apparatus according to the present invention, image display means, image synthesis means and display control means are used.

For this reason, display processing of characters, figures, and the like can be executed by the soft forming color corresponding to the background color of the display screen of the display device or the like.

Therefore, the display characters can be diversified to respond to the user's use requirements. Therefore, an image synthesizing apparatus of an on-screen display controller that performs high quality character display processing can be obtained.

Claims (12)

An image display control method for displaying one or more display patterns in a predetermined area, the method comprising: generating one or more display patterns having a display color, and interpolating edge formation of the display pattern to generate an edge-forming display pattern in the predetermined area; A step of processing, generating area display data representing a color between the background color as one of the predetermined areas in which one of the display patterns is displayed, and displaying the display pattern so as to generate a reverse display pattern and a soft edge display pattern, respectively. Selectively inverting one of the edge forming display patterns, and selectively outputting one of a display pattern, an inverted display pattern, an edge forming display pattern, and an edge forming reverse display pattern to display the selected pattern in the predetermined region Image display control method characterized in that it comprises a. The display device according to claim 1, wherein the selective inversion processing step replaces the selected one of the display color of the predetermined area of the display pattern and the display color of the predetermined area of the soft formation display pattern with the background color of the selected one of the display pattern and soft formation display pattern, And an image selected from the background color of the display pattern and the background color of the soft-formation display pattern is replaced with the display color of the selected area from the predetermined area of the display pattern and the soft-formation display pattern. The display color of the edge forming display pattern is the same system color as the background color thereof, and is surrounded by the edge forming display pattern having a color other than the same system color of the outer and inner peripheral parts of the display pattern. An image display control method characterized by the above-mentioned. The image display control method according to claim 1, further comprising the step of forming a display of a peripheral area of the edge forming reverse display pattern. The image display control method according to claim 1, further comprising the step of outputting data of the edge formation inversion display pattern in which the peripheral area is formed. The image display control method according to claim 1, further comprising the step of forming a peripheral area for the edge forming inversion display pattern. Image display means for outputting one or more types of display data by an external control signal, first edge forming means for outputting an edge forming display pattern in accordance with the display data, and a color of a predetermined region in which one of the display patterns is displayed; Means for generating area display data having a color different from the background color, and inverted display data and soft-formation display according to selection of one of the display data and the soft-form display pattern and the selection of the reverse display data and the soft-form display data Control for displaying the selected pattern in the predetermined area by controlling the input and output of the first inverting means for outputting one of the data, the image display means, the first edge forming means, the first selecting means, and the first inverting means. And an image display control device. 8. The display apparatus according to claim 7, further comprising: second inverting means for generating inverted display data according to the display data, second selecting means for selectively outputting one of the display data and the inverted data, and in the second selecting means. And second edge forming means for generating one of the edge forming display data and the edge forming inversion data according to the selection of the display data and the inversion data. The image display control apparatus according to claim 8, further comprising peripheral region forming means for forming a display of the peripheral region of the edge forming inversion display pattern. Means for outputting the area display data to indicate the area color, image display means for outputting one or more types of display data according to an outer control signal, and displaying the display data as data representing the same color as the area color. And edge forming means for outputting edge forming display data according to the converted display data. An image display control method for displaying one or more display patterns in a predetermined area, the method comprising: generating one or more display patterns having a display color and a background display color, and displaying the soft-formed display pattern in the predetermined area; Interpolating edge forming processing; selectively inverting one of the display pattern and the edge forming display pattern to separately generate the inverted display pattern and the edge forming reverse display pattern; and the display pattern, the inversion display pattern, and the edge forming display. And selectively outputting one of the pattern and the soft-form inversion display pattern, and outputting the composite image output data according to the display data and the outer peripheral image input data. Image display means for outputting one or more types of display data according to the outer peripheral control signal, soft edge forming means for outputting soft edge forming display data in accordance with the display data, and selectively displaying one of display data and soft edge forming display data Control means for controlling the input and output of the image display means, the edge forming means, and the inverting means for selecting one of the selection means, the inverting means for outputting one of the inversion display data and the edge forming inversion display data according to the display data and the edge forming display data. And image synthesizing means for outputting composite image output data in accordance with the display data and the peripheral input data.