JPS6381393A - Programable display device - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a programmable display device that can efficiently write arbitrary figures on a character display section and display them at high speed.

(Prior Art) Generally, a programmable display device is configured as shown in FIG. That is, a CPU section 1 controls the entire system via a bus 14, a program memory section 2 for storing display programs, a keyboard section 3 for inputting programs and data, and a graphic display based on commands from the display program. It is composed of a graphic display section 4 for displaying a character, a character display section 5 for displaying a character according to commands from a display program, an OR circuit 6 for displaying a graphic display and a character display in one circuit, and a display section 7. .

As shown in FIG. 4, the interior of the graphic display unit 4 includes a graphic pattern calculation unit 8 that calculates a predetermined figure based on the information on the type and position of the figure given via the bus 14 and converts it into dot information. , a bitmap memory section 9 for storing the dot information, and the bitmap memory section 9 is scanned at any time to convert it into a video signal and output it.

As shown in FIG. 5, the character display section 5 includes a character memory section 1o that stores character codes and display position information given via a bus 14, and scans the character memory section 10 at any time to determine the type of character code. When the determination result is a ROM code, a ROM code memo 9 section 12 is provided, and a character converting section 11 is provided.
G (Variable Pattern (36ne)
VPG: I-to memory section 1 when the code is
3 is selected and the dot information of each corresponding code is output as a video signal.

The video signals output from the graphic display section 4 and the character display section 5 are synthesized by an OR circuit 6 and sent to the display section 7.
displayed on one screen.

In the ROM code memo 9 section 12, character patterns and standard graphic patterns are written in advance in the form of dot patterns for each character, and a read-only memory is used.

On the other hand, the VPG code memory section 13 uses a writable memory, and special graphic patterns can be freely written therein. This writing operation is performed by displaying a dot matrix 15 for each character on the display section 7 and filling in the squares indicated by the cursor, as shown in FIG.

That is, the cursor position specifies a bit address of the dot pattern memory 16, and the cells of the dot matrix 15 are filled in corresponding to the data written there. The image signal of the dot matrix 15 is output from the ROM code memo 9 section 12 based on the data written in the character memory section 10. When the special figure pattern is completed, specify the VPG code number and write 1 to position 17 of the specified VPG code number in the VPG code memory section 13.
Written as a character dot pattern.

In a graphic display, each time a new figure is displayed, a graphic operation is performed and the figure is converted into dot information, so the display speed is generally slow. On the other hand, since the character display simply reads out the dot information stored in advance in the ROM code memo 9 section 12 and the VPG code memory section 13, the display response is extremely fast.

Therefore, graphic displays are used for background screens and the like where display responsiveness is not required, and character displays are used for areas where fast display responsiveness is required.

(Problems to be Solved by the Invention) However, in various process displays, special graphic patterns may be displayed with high speed response. In this case, the character display is performed in ROM code memo 9 part 1.
In 2, there are only letters, numbers, and simple graphic patterns, so they must be written in the VPG code memory section 13. However, there are many types of patterns, and patterns are often composed of multiple characters. There is a problem in that writing the dot pattern in the program 13 requires a great deal of effort, resulting in very inefficient work with low program productivity.

The present invention uses a graphic display section to create the entire figure at once, and then automatically divides it into character units and encodes them so that they can be written efficiently on the character display section. shape pattern,
The purpose is to display it at high speed.

[Structure of the invention]

(Means and operations for solving the problems) In order to achieve the above object, the present invention includes a graphic calculation unit that calculates a predetermined graphic pattern in which the type and position of a graphic is specified, and a graphic calculation unit that stores dot information of the graphic pattern. It has a graphic display section having a bitmap memory, a character memory section that stores character codes for identifying characters in locations corresponding to the display screen, and a VPG code memory section in which dot information is written and can be read out character by character using character codes. In an apparatus equipped with a character display section, a VPG pattern creation section that divides dot information of a special figure pattern created by the graphic display section into character units, reads them out, and writes them into a VPG code memory section of the character display section; a code map memory that stores a graphic code for identifying the character code and a character code for identifying each of the special graphic patterns divided into character units; and a code map memory that stores dot information of the special graphic patterns divided into character units by the VPG pattern creation section. This is a programmable display device that is configured with a VPG pattern storage memory so that special graphic patterns can be easily written into the VPG code memory section and displayed with high-speed response.

(Example) The configuration of the present invention will be explained based on the example shown in FIG.

In FIG. 1, the same elements as in the prior art are given the same reference numerals as in FIG. 3, and their explanations will be omitted.

In FIG. 1, reference numeral 18 denotes a pointing device called a mouse for freely adjusting designated points on the X and Y axes when moving the position of a cursor displayed on the screen. The code map memory 19 is a memory that stores information such as a character code for identifying a character group when a special figure to be described later is composed of a plurality of characters. The VPG pattern storage memory 20 is a memory that stores dot information of special figures, which will be described later, in units of characters. These memories 19, 20 are either battery-backed or constitute non-volatile memories. vp
a Lumi pattern section 21 includes a start processing section 22 and a figure processing section 2.
3. It is composed of a VPG pattern storage processing section 24 and a VPG code processing section 25, and their functions will be described in detail below with reference to FIG.

These functions become effective when the VPG pattern creation mode is selected. When the VPG pattern creation mode is selected, first, the start processing section 22 starts operating. Size data (y
, 4) and the figure identification code (ri) that specifies this pattern.
When input from the keyboard 3, the start control unit 22 displays a graphic menu 32, a hatching menu, and a VPG pattern creation area 26 on the display 7.

The VPG pattern creation area 26 is displayed in units of characters, and the size data v and A are input as the number of characters lined up in the Y-axis and X-axis directions. All character units in this area 26 have character codes lj+o, i+1 . ...i+11) is allocated. The character codes are allocated to fill empty data locations in the VPG pattern storage memory 20 in order. Further, the graphic identification code (ri) specifies all the characters in the area 26 as groups and stores the character code (i+oIL+1y) in the code map memory 19.
...i+11) and the size data (v, f) are completed, the graphic processing unit 2
3, it becomes possible to write figures in the VPG pattern creation area 26.

After moving to the graphic processing section, the display position of the cursor 35 is freely moved using pointing (position designation) data from the mouse 18, the position is recognized, and the graphic menu 32 and hatching menu 33 are selected.

Then, a specific position in terms of X and Y coordinates is designated, and these pieces of information are given to the graphic display section 4 to create a special graphic pattern. This special graphic pattern is created by writing dot information 34 into the bitmap memory section 9 via the graphic pattern calculation section 8 provided inside the display section 4 and displaying the pattern in the VPG pattern creation area 26 on the display 7. be exposed.

When a special graphic pattern creation completion command is input from the keyboard 3, the process moves to the VPG pattern processing section 24. When the process moves to the VPG pattern processing section 24, the dot information 34 of the special figure pattern is read out and stored in the VPG pattern storage memory 20.
is divided into characters and written. in this case,
Each divided dot information is stored in the code map memory 19 as each character code (i+o, i+1, . . .
...λ+11) are respectively written to predetermined locations in the VPG pattern storage memory 20.

The character code λ is VPG/(
This corresponds to the address setting of the turn storage memory 20.

A wide variety of special graphic patterns can be created by the above procedure.

When the dot information 34 is written into the VPG pattern storage memory 2o, the VPG code writing processing section 25 simultaneously writes the dot information into the VPG code memory section 13 provided inside the character display section 5. Since the character code arrangement of the VPG pattern storage memory 20 is configured in the same arrangement as the VPG code memory section 13, the writing location is specified by the character code (i+o, i+1...λ+11). Further, the write processing unit 25 writes all the dot information stored in the VPG pattern storage memory 20 to the VPG code memory unit 13 at the time of initial settings such as power-on.
Perform the operation of writing to.

When the registration of the special figure pattern is completed as described above, the figure code (>) is displayed in the normal program display mode.
By simply specifying , the character display section 5 can display the character with high-speed response.

In other words, if you specify one figure code (ri) and the display position,
A group mark character code (L+o, i+1 . . . i+11) is arranged at a designated location in the character memory section IO, and the corresponding dot information in the VPG code memory section 13 is read out at a designated timing and displayed at high speed.

〔Effect of the invention〕

According to the programmable display device of the present invention, it is possible to easily write a special graphic pattern of a desired size into the VPG code memory section, which improves program productivity. Graphic patterns can be displayed with a high-speed response, and color changes, movements, and deletions can be easily performed with a high-speed response.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of a programmable display device according to the present invention, FIG. 2 is a diagram for explaining the operation of FIG. 1, FIG. 3 is a block diagram of a conventional programmable display device, and FIG. 5 is an internal configuration diagram of the graphic display unit 4, FIG. 5 is an internal configuration diagram of the character display unit 5, and FIG. 6 is an explanatory diagram of a conventional VPG pattern creation procedure. 1...CPU 2...Program memory section 3...Keyboard 4...Graphic display section 5...Character display section 7...Display 8...Graphic pattern calculation section 9...Bitmap Memory section 10... Character memory section 11... Character conversion section 12... ROM code memory section 13... VPG code memory section 18... Mouse 19... Code map memory 20... VPG pattern Storage memory 21...VPG pattern creation section 22...Start processing section 23...Graphic processing section 24...VPG pattern storage processing section 25...VPG code writing processing section 26...V
PG /<Turn creation area agent Patent attorney Nori Ken Chika Yudo Hirofumi MitsumataFigure 2Figure 3Figure 4Figure 5

Claims (2)

[Claims] (1) A graphic calculation unit that calculates a predetermined graphic pattern by specifying the type and position of a graphic, a graphic display unit that has a bitmap memory that stores dot information of the graphic pattern, and a display screen that displays character codes that identify characters. In an apparatus comprising a character display section having a character memory section and a VPG code memory section in which dot information is written and can be read out character by character using a character code, the special graphic pattern created in the graphic display section is provided. a VPG pattern creation section which divides and reads the dot information into character units and writes it into the VPG code memory section of the character display section; and a graphic code for identifying the special graphic pattern and each of the special graphic patterns divided into character units. 1. A programmable display device comprising: a code map memory for storing character codes; and a VPG pattern storage memory for storing dot information of special graphic patterns divided into characters by the VPG pattern creation section. (2) The programmable display device according to claim 1, wherein the code map memory and the VPG pattern storage memory are battery-backed memories or nonvolatile memories.