JPS6235396A - Graphic display unit - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a graphic display device that displays graphics on a screen such as a CRT display device.

[Technological background of the invention and its problems]

A graphic display device usually has a plurality of frames (surfaces) corresponding to the 081 screen, and the user can superimpose these multiple frames. A: You can observe the (synthesized) results on the screen. This will be explained with reference to FIG. If the display target area b Become.

However, conventional graphic display devices have the following problems.

(2) In conventional graphic display devices, it is possible to scroll multiple frames at once on a screen in which multiple frames are synthesized as an independent function of the device. This will be explained with reference to FIGS. 4 to 6. FIG. 4 shows a state in which two frames are collectively scrolled to the right by one screen, compared to the state in FIG. 3. FIG. 5 shows a state in which two frames are collectively scrolled downward by one screen in contrast to the state in FIG. 4. Furthermore, in contrast to the state shown in FIG. 5, FIG. 6 shows a state in which two frames are collectively equivalent to half a screen (the screen is scrolled to the upper left side).

However, conventional devices cannot independently scroll each frame as a standalone function. This will be explained with reference to FIGS. 7 to 11. FIG. 7 shows a state in which only the frame (b) is independently scrolled to the right by one screen with respect to the state shown in FIG. 3. In contrast to the state shown in FIG. 7, FIG. 8 shows a state in which only the frame (b) has been independently scrolled down for one screen. Moreover, FIG. 9 shows a state in which only the frame (b) is independently scrolled to the upper left side by half a screen with respect to the state in FIG. 8.

Furthermore, FIG. 10 shows the result of scrolling only the frame (a) down by one screen with respect to the state of FIG. 9, and FIG. ) is scrolled half a screen to the right to show the state of unity.

In order to realize the individual scrolling shown in FIGS. 7 to 11 using the conventional device, the user must change the application program on the host computer side.

■When using a graphic display device, there are cases where it is desired to divide the screen into a plurality of parts and display a plurality of items respectively. For example, as shown in Figure 12, (
This is a case where the frame a) and the frame (1)) are displayed in separate display areas B1.82 on the screen (C).

However, with conventional graphic display devices,
Changing the position and size of the window corresponding to each frame, scrolling for each window, etc. cannot be executed as an independent function.

This will be explained with reference to FIGS. 13 to 15. FIG. 13 shows the result of moving the position of the window display 1H4B1 corresponding to the frame of (a) with respect to the state of FIG. 12. FIG. 14 shows (b
) shows the result of changing the size of the display area B2 of the window corresponding to the frame. Moreover, FIG. 15 shows the result of scrolling only the window corresponding to the frame (a) in the state shown in FIG. 12.

In order to perform a different aspect of the conventional apparatus according to FIGS. 13 to 15, the user must change the application program on the host computer side.

As mentioned above, with conventional devices, it is not possible to realize independent scrolling of each frame, change of window position and size, etc. as independent functions of the graphic display device itself, and it is necessary to change the application program on the host computer side. is necessary. Therefore, there is a drawback that programming for the host computer becomes complicated. Further, since such processing is performed via the host computer, there is no reduction in the response time of the terminal side (graphic display device, etc.).

In general, the increase in the processing time of the host computer due to the execution of such processing on the host computer side cannot be ignored, and especially when multiple users use the host computer together, the overall load increases and other users impact on the response time, etc. of the terminal devices used by users of ν! It has the disadvantage of giving

[Purpose of the invention]

The present invention has been made to overcome the drawbacks of the conventional devices described above, and even when scrolling each frame or changing the size or position of each frame, the application program on the host computer side It is an object of the present invention to provide a graphic display device that can be easily created and has a quick response time on the terminal side.

[Summary of the invention]

To achieve the above object, the present invention provides a display device such as a CRT display for graphically displaying data on a screen, a plurality of frame memories for storing data to be displayed on the screen for each frame, and a screen for each frame memory. A storage unit that stores display area information and frame display target area information, a processor that sets and updates the storage unit for frames that correspond to inputs from joysticks, mouse, etc., and commands from the host computer, and a processor that stores each frame memory. The present invention provides a graphic display device that includes a frame controller 1 and a roller that displays data in a display target area for a frame corresponding to a command in a display area of a screen according to a double-sided display priority order.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a block diagram showing the configuration of a graphic display device according to the same embodiment. Graphic blog 1-1 is connected to Hosmil Computer HC via communication line etc.
The input device 10 is connected to the input device 10 via a cable or the like.
connected to. Further, the processor 1 is connected to a vector generator 2, a video controller 3, a display area information storage section 4, and a frame controller 5 via a bus.

Frame memory group 5 includes frame memory (#1) 51, frame memory (#2) 52... frame memory (#1) 51, frame memory (#2) 52...
i) 5i... It is composed of a frame memory (#n) 5n, and is connected to the vector generator 2a3 and the video controller 3, as well as the frame controller roller 6. Also, frame controller 6
is connected to a color lookup table lure, and table 7 is connected to a D/A converter 8. The CRT device 9 inputs the horizontal d3 and vertical synchronizing signals from the video controller 3 and the RGB signals from the D/A converter 8, and graphically displays the data on the screen.

The graphic processor 1 is in charge of controlling the entire graphic display device, and is responsible for communication with the computer on the host 1, calculation of starting point coordinates and ending point coordinates for line segment resolution of glue figures such as circles and rectangles), and aggregation of figure groups. Performs segment management, line segment separation of characters such as Kanji/English characters, etc.

The vector generator 2 is mainly responsible for generating line segments, and when given the start point coordinates and end point coordinates of the line segment to be drawn, it calculates the coordinates of all points (C). Then, the corresponding frame memory 51 in the frame memory group 5 corresponding to that point
~5 ``)'' address and data are generated.

The video controller 3 has the functions of generating horizontal and vertical synchronizing signals and cursor patterns for graphic display on the CRT device 9, generating addresses for CR1 display, and erasing the screen at high speed. Note that the display area information storage section 4 will be described later.

The frame memory group 5 includes n frame memories 51 to 5n.
It has a function to save the data displayed on the CRT screen. The frame controller 6 stores frame memories 51 to 5n based on the contents of the display area information storage section 4.
The data is read out and drawing display data for the CRT screen is created.

The color lookup table 7 is a preset R. G. B (
Outputs data for red, green, and blue.

D/A converter (digital/analog converter)
8 is R.8 for display on the CRT screen. G. Convert the B digital signal to an analog signal. C F<TEi The device displays data on a screen as a display.

The input device 10 is used for operations such as scrolling the screen, changing the position and size of the window, and scrolling within the window. Specifically, there are, for example, a joystick, a mouse, a trackball, a control box, etc.

FIG. 2 is a 1″ block diagram showing the detailed configuration of the display area information storage unit 4.The storage unit 4 is a frame memory (#1) 5.
1 to frame memory (#n) 5n display area information storage areas 41 to 4'' are on the right.

Furthermore, the storage areas 41 to 4n have CRT screen display areas 41 to 4na, respectively, and frame display target areas 41b to 4n, respectively. moreover,
The display areas 41 to 4n have base point X coordinates 41 to 4n, respectively.
Base point y-coordinate a1 a1ゝ41a2~4n Has X-direction dimensions 41a3-4na3 and y-direction dimensions 41-4na4, display target area 41
．． ~4nb has a base point X coordinate 41b1~4nb1, a base point y coordinate 41b2~4n, an x direction 1 method 41b3~4nb3, and a y direction dimension 41b4~4nb.

The display area storage unit 4 configured as described above operates based on instructions from a host computer or an input device 10 (not shown). The settings and changes of the contents are made by Brochner 1.

By the way, the screen display formats of the well-known J: Uni graphic display device include a single window format (normal) and a multi-window format (a format in which the screen is divided into multiple pieces to display items of different pluralities). ). In the graphic display device according to this embodiment, the frame memory (
#1) CRT screen display area for 41.51. ~Framework (#n) Set the area indicated by ll1i/11r18 in the CRT screen for 5n as the entire area of the screen in the case of a single window as a command from the host computer side, and set it as the entire screen area in the case of a multi-window. In this case, set it as a partial area of the screen.

Based on the above, the operation will be explained below. Note that the explanation of the operation covers only the case where processing is performed normally, and a separate explanation will be added at the appropriate time for the case of error processing. Further, the operation will be explained with respect to (Δ) to ([E) below.

(△) Basic operation of rest (B) In the case of single window format display,
Operations when scrolling all frames all at once and scrolling only one or more specific frames (D) Operation when changing the position (D) Operation when changing the screen size of the window corresponding to each frame in the case of multi-window format display (E) Operation when changing the screen size of the window corresponding to each frame In this case, the operation when playing a screen in the window corresponding to each frame (A>Overall operation) The overall operation of the graphic display device is as follows.

(2) In response to a graphic display command (for example, draw a circle in frame memory #2) from the host computer HC, the graphic processor decodes the contents of the command.

(2) The graphic processor 1 decodes the command, performs approximation (polygonal approximation) of a circle corresponding to the given center and radius data using a group of line segments, and calculates the starting point coordinates and ending point coordinates of the line segment. and processor 1
gives this coordinate f-ta to the vector generator 2 via the bus.

(2) The vector generator 2 inputs and outputs data to corresponding addresses in the frame memory 52 corresponding to all points on the line segment with respect to the start point coordinates and end point coordinates of the line segment.

(2) On the other hand, the video controller 3 generates an address for graphic display in the CRrHffi 9, and generates a horizontal synchronization signal and a vertical synchronization signal.

■The frame controllers 1 to 56 carry out the above processing in the frame memory 5i to be displayed on the screen of the device 9 (i=i
-n). That is, frame memory 5
Data in a predetermined range of 1 is displayed in a predetermined range on the screen of the CRT device 9.

Here, the range of the representation frame memory 51 is determined as follows. In other words, the starting point X coordinate is the display target area Ji
The base point x coordinate in b is the base point y coordinate 4'b1, and the starting point y coordinate is the base point y coordinate 41.2 in the display target area 41b. Also, the end point x 8 marks are the same (base point x coordinate 4 in display target area 4ib)
I b1+ Xh direction method 4! b3, and the end point y coordinate is the base point y coordinate 4 i b2 + y in the display target area 4ib
The direction dimension is 4'b4.

The display range of the 087 screen is determined as follows. That is,
The starting point X coordinate is in the display area 41. Base point X coordinate in 4 i a
1, and the starting point Y8 mark is the base point y coordinate "a2" in the display area 1llt4ia.The end point X coordinate is also the base point The end point y-coordinate is the base point y-coordinate 4+a2+y-direction dimension "a4" in the display area 41.

Note that this operation (■) is repeated at regular intervals. Then, the screen display data number generated here is sent from the frame controller 6 to the color lookup table 7 via the bus.

■The screen display data created by the frame controller 1-roller 6 is converted into digital signals of 1 (red), G (F2' color),
Converted to B (blue) data. Furthermore, digital/analog conversion is performed by the D/A converter 8, and the resulting signal is provided to the CRT device 9 as an output signal. In addition, C
F? As input signals to the T device 9, these R, G, 1
In addition to the three signals, a horizontal synchronizing signal a3 and a vertical synchronizing signal generated by the video controller 3 are added.

By executing the operations ① to ② above, a graphic display based on the command from the host computer side IC or the input device 10 is made on the screen of the CRT device 9.

(B) Operation when scrolling all frames at once and scrolling only one or more specific frames in single window format display Prior to this operation, the host computer side By command, the display areas 41 to 4n in the display area information storage section 4
, the entire screen area is set for . That is, the base point X coordinates 41, 1 to 4 in the display areas 41 to 4na
The base point coordinates of the 087 screen are set as na1, base point y coordinates 41.2 to 4na2, and the display area 41 to 4na
Inside X direction dimension 41~4n V direction amount method 4184~
a3 a3ゝ4na4 is set.

■When the graphics processor receives a frame scrolling command from the host computer or input device 10, it explains the command, including the number of the frame to be scrolled and the scrolling direction (up, down, left, right, etc. with respect to the screen).
and find movement 1B.

From this, we will calculate the deviation in the X direction when scrolling from the base coordinates of the display target area in the frame, and the y when scrolling.
Calculate the direction deviation. However, this deviation value is a signed numerical value.

■ Next, the graphics processor
The following process is performed for base point coordinates corresponding to all frames to be scrolled among b2 to 4nb2.

Now, the base point X coordinates 4ib1 (i=i~n) are the base point
Coordinate 4ib1: Processing that makes the X direction deviation during scrolling and base point y8 mark 4ib2 (i-d~n) the base y coordinate 41
This is a process of setting b2+the deviation in the y direction during scrolling. However, i is the number of the frame memory to be scrolled.

■As shown in "(A) Overall basic operation", the frame controller 6 has a frame memory (#
i) 5 In-frame display target area bh for i
4 i Create and read display data on the CRT screen indicated by the display area 4na on the CRT screen using the data in the range indicated by b. .

(2) The frame controller 6 periodically repeats the operation (2) above. As a result, data is displayed on the CRT screen as explained in "(A) Overall basic operation".

As a result of the above, for example, when a scroll command is given only for the frame memory (#2>52), the in-frame display target area 42 for the frame memory 52 is
Base point x in b, w 42 b+J'3, and frame white display target area 42. Only the base point y-zagura 42b2 is updated. Therefore, only the display data of the frame memory 52 is scrolled on the CR7 screen by the operation (2) above. In other words, it is possible to scroll only a specific frame in a single window as shown in FIGS. This can be realized as a function.

Furthermore, when a batch scrolling command is given for all frames, the above-mentioned operation (2) causes the in-frame display target area 41 . Base point y coordinates 41 to 4n in ~4na,
2 are all updated. Therefore, all the frames on the CRI screen are scrolled at once by the operation (2) above.

Therefore, similar to the conventional device, simultaneous scrolling of all frames can be realized as a 91 function of the graphic display device.

(C) In case of multi-window format display, operation when changing the position on the screen of the window corresponding to each frame.Prior to this operation, J: is displayed in the display area in response to a command from the host computer. Frame memory 51 in the information storage section 4
It is assumed that a partial area within the screen is set for each of the CRT screen display area b1.41a for the frame memory 5n to the CRT screen display area 4n for the frame memory 5n.

When the graphics processor 1 receives a command to change the position on the screen of a window corresponding to a certain frame as a command from the host computer or input device 10, it first decodes the command.

Then, change the window position and reposition the frame.
The number, movement direction (up, down, left, right, etc. with respect to the screen) and movement 1 are obtained, and from this, the deviation in the X direction and the deviation in the y direction with respect to the base point of the display area in the CRT screen are calculated (). Here, the deviation value is a signed numerical value.

■The graphic processor 1 has base point x coordinates a 41a1 to 4n, 1 and base point y coordinates 41, 2 to 4n, in the CRT screen display area 41 to 4n,
2, the following processing number is executed for the frame corresponding to the frame in which the window position is to be changed.

Of course, the display area tii for the frame memory 5i (i=1 to n)! The process of converting the base point X coordinate 41,1 in 4i to the base point
1 to the base point y coordinate 418□+y direction deviation. Here, i indicates the number of the frame memory in which the window position is to be changed.

■Next, as shown in "(A) Overall basic operation", the frame controller 6 tilts the display target area in the frame to the frame memory 51 to be displayed on the screen.
Using the data in the range indicated by b, display data on the CR king screen indicated by the display area 41 in the CRT screen is created.

(2) Then, the frame controller 6 periodically repeats the operation (2) above. As a result, "(A) Overall basic operation"
As shown in , data is displayed on the CRT screen.

As a result of the above, for example, when a command to change the position of the window of the frame memory (52) is given, the base point X coordinate 42a1 of the display area in the CRT screen for the frame memory 51 and the display area in the CRT screen are Only the base point y coordinate 42.2 of is updated. Therefore, only the window corresponding to the frame memory 52 moves on the CR7 screen by the operation (2) above. In other words, the position movement of only a specific window as shown in FIGS. 12 and 13 can be performed as an independent function of the graphic display device without changing the application program on the host computer side as in the past. . (D) Operation when changing the screen size of the window corresponding to each frame in the case of multi-window format display.Prior to this operation, the display area information is It is assumed that a partial area within the screen is set as a CRT screen display area 711a for the frame memory 51 in the storage unit 4 to a CRT screen front non-display area 4n8 for the frame memory 5n.

(2) When the graphic browser receives a command to change the size of a window corresponding to a certain frame from the host computer or input device 10, it decodes this command. Then, the number of the frame memory whose window size is to be changed, the dimensions of the CRT screen in the front and back non-display area directions and the y direction after the change, and the dimensions of the display area in the frame in the X direction and the y direction after the change are determined.

■Graphic block 1 cocessor 1 has dimensions 41a3 to 4n in the X direction and y in the display area 41 to 4na on the screen.
Direction dimension FL41 a4 to 4 n a4 and display area in frame h! 41. ~4n, inside X direction dimension 4l b3~
4nb3 and the X-direction dimensions 41, 4 to 4nb4, the following four processes are executed only for those corresponding to the frame whose window size is to be changed.

That is, the first process changes the X-direction 4 i a3 in the screen display area 41 for the frame memory 51 to the changed X-direction 1 method, and the y-direction dimension in the screen display area 4 + a A second process that sets a4 to the changed y-direction size, a third process that changes the X-direction dimension 41b3 in the in-frame display target area 4ib for the frame memory 51 to the changed X-direction size, and the same frame Inner display target area 41, inner y direction judicial 41, 4 after changing y
This is the fourth process of creating a directional dimension. Note that i indicates the number of the frame whose window size is to be changed.

■Then, as shown in r(A) Overall basic operation], the frame controller 6 performs the frame display target area 4 + b for the frame memory 51 to be displayed on the screen.
Processes the data in the range indicated by CR and creates display data on the CRT screen indicated by the on-screen display area 4ia.

(2) The frame controller 6 periodically repeats the operation (2) above. As a result, data is displayed on the 081 screen as shown in "(A) Overall basic operation".

As a result of the above, for example, when a command to change the window of the frame memory 52 is given, the above operation (2) will cause the OR for the frame memory 52 to be X direction dimension 42
, 4, and the X-direction dimension 42b3 and the X-direction dimension 42b4 of the in-frame display target area 1ilt42b for the frame memory 52 are updated. Therefore, by the operation ``-'', only the window corresponding to the frame memory 52 on the 081 screen changes its size. In other words, changing the size of a specific frame as shown in FIGS. 12 and 14 can be done as an independent function of the graphic display device without changing the application program on the host computer as in the past. It can be executed as

(E) In the case of multi-window format display, the operation of scrolling within the window corresponding to each frame. For the CRT screen inner surface non-display area 418 to the RT screen inner display area 4na for frame memory 5n,
It is assumed that each partial area within the screen is set.

This operation is the same as "(B) Operation when displaying in single window format, when all frames are scrolled at once, and when only one or more specific frames are scrolled." be. Therefore, the first
Scrolling only a specific frame in a multi-window as shown in FIGS. 2 and 15 can be realized as an independent function of the graphic display device, without relying on an application program on the host computer side as in the past.

The present invention is not limited to the above embodiments, but can be modified in various ways. For example, the device for graphically displaying data is not limited to a CRT, but may be a solid state display device or the like.

〔Effect of the invention〕

As described above, the graphic display device of the present invention includes:
In-screen display area (base point coordinates, X direction dimension, y direction dimension) tj and display target area in frame (base point coordinates,
Each frame has a display area information storage area that has a display area information storage area consisting of x-direction dimensions, y-direction dimensions), and the contents of this storage area are updated by the graphics processor according to instructions from the host computer or input device. Based on this, the frame controller displays the data in the frame memory corresponding to the range specified by the intra-frame display target area at the position on the screen specified by the screen display area. For this reason, each frame [
] - changing the position and size of a particular frame can be implemented as a stand-alone function of the graphic display device. Therefore, even when performing these operations,
Application programs can be easily created on the host computer side. Furthermore, since the above processing is executed by the graphic display device, the load on the host computer is reduced and the response on the terminal side can be made faster.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of a graphic display device according to the present invention, FIG. 2 is a block diagram showing the configuration of an example of the display area information storage section, and FIG. 3(a)
~(C) is an explanatory diagram of the screen in a single window display format, Figures 4(a)~(C) to 6(a)~(C)
) is an explanatory diagram of the screen as a result of scrolling all frames for Figure 3 (a) to (C), and Figure 7 (a) to (C)
or Figures 11(a) to (C) are Figures 3(a) to (C)
Figure 12 (a) to (C) are explanatory diagrams of the screen in multi-window display format, and Figures 13 (a) to (C) are the results of scrolling only a specific frame.
is the IQ of the window for Figures 12(a) to (c).
Explanatory diagram of the screen as a result of moving fa, Figure 14 (a) ~
(C) is an explanatory diagram of the screen resulting from changing the window size with respect to Fig. 12 (a) to (C), Fig. 15 (a)
-(c) are explanatory diagrams of screens resulting from scrolling within the window with respect to FIGS. 12(a)-(C). 1... Graphic processor, 2... Vector generator, 3... Video controller, 4...
Display area information storage section (storage section), 41 to 4n...Display area information storage area (storage area) for frame memory (#1) to frame memory (#n), 41 to 4n,...CR
T' Screen display area! +! (display area), 41a
1 to 4n81... CRT screen display area base point X
Coordinates (base point xfl), 4182~4na2...cR
Display area base point y-coordinate in screen (base point y-coordinate), 4
1,3~4n83... CRT screen inner surface non-display area (X direction dimension), 41,4~4n84...C
RT screen display area y-direction dimension (y-direction dimension),
41. ~4n, ... Display target area in frame (display target area), 41b1 to 4nb1... Display target area base point X coordinate in frame (base point X coordinate), 41b2 to 4nb2
... Display target area base point y coordinate in frame (base point y position 4
! ! ), 4 l b3~4 ny-7L'- Target area X-direction dimension (X-direction dimension), 41ゎ, ~4
nb4...In-frame display versus area V1. y direction dimension (
y-direction dimension), 5... frame memory group, 51 to 5n
...Frame memory (#1) ~ Frames [su (#n
), 6... Frame controller, 7... Color lookup table, 8... D/A converter, 9...
...CRT device, 10...input device. Applicant's agent Hisashi Hatano Figure 3 (1) Figure 4 Figure 5 (a) Figure 6 (/r) Sheep Figure 6 (J) (d) (d) □ (d) B =′. Brown 12 (a) Figure (separate (a) punishment) Sheep 14 eyes (6) ((L) (,6) -1(IR2--

Claims (1)

[Scope of Claims] 1. A display device for graphically displaying data on a screen, and a plurality of frame memories that store data to be displayed on the screen for each of a plurality of frames corresponding to the screen;
a storage unit that stores display area information regarding the display area within the screen and display target area information regarding the display target area within the frame for each of the plurality of frame memories; A processor that sets and updates the storage unit for a frame, and a processor that sets and updates the data in the frame memory indicated by the display target area information for the frame corresponding to the command according to the screen display priority of each of the plurality of frame memories. , and a frame controller that displays at a position within the screen indicated by the display area information. 2. The graphic display device according to claim 1, wherein the display device is a CRT display device.