JPS59184A - Division control system - 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] Object of the Invention The present invention relates to a division control method, and particularly to a division control method in a character display device that divides a display screen into a plurality of parts and displays characters, etc. on the divided screen. Raster scan type CRT as display device 1
Display devices are often used. When displaying dot-shaped characters, symbols, etc. on this (1") (, T, the 0-piece also has a refresh memory that supports display on both sides of the T. This refresh memory stores display data such as characters, etc. This display data is sequentially read out from the refresh memory in synchronization with the raster scan on the display screen.Then, based on this display data, a character pattern is output from the character generator, and this character pattern is placed on the scanning line. will be displayed on the display screen.

By the way, in order to display data consisting of multiple non-contiguous blocks of memory on one CR7 screen as a continuous 7-split screen, you need to rearrange and edit each non-contiguous memory block into a continuous address. However, this must be stored in display memory and displayed. However, if a part of the split screen is changed, or if the control information for display is changed, it is necessary to change the entire screen.

OBJECTS OF THE INVENTION It is an object of the present invention to solve the problem of hardware f? ? The object of the present invention is to provide a division system that can relatively easily divide a display screen or a printed image into a plurality of parts.

An object of the present invention is to provide a division control method that can arbitrarily set the number of divided screens or the size of the divided screens.

The present invention provides codes for a large number of characters, symbols, etc. that can be output (
A first memory for storing a character code (collectively referred to as a character code), and a first memory corresponding to a character code output from the memory.
A character generator that stores a character pattern, and a display control unit that visually outputs a 1° cut pattern sent from the character generator on an output screen. a second memory that stores parameter information that defines the format of each divided double-sided output screen, for example, addresses indicating the start and end points of the divided screen; It has control means for creating an address within a range indicated by a start point address and an end point address and accessing the first memory. A character pattern is then output from the character generator corresponding to the character code output from the first memory.

In order to change the number of output screens to be divided or the divided areas, the parameter information in the memory of @2 is changed. This is done by rewriting the parameter information with new information using a period that is not directly related to the visible output on the output screen, such as the Lascoux vertical retrace period on a CRT. Here, when this information output device is connected to a host device such as a terminal control device, the above parameter information C is transferred from the device in the -H position.

EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of an R, T character display device according to an embodiment of the present invention (f). In this figure, the character memory 1 is composed of, for example, I!AM (: R,
'l' is displayed for a long time. Stores part of each character of the number λ. At least the amount of fermentation that is displayed on the display screen is in danger of being stored. These character codes are transferred from the first generation terminal control device (shown in the figure (7)) and stored in the character memory 1. In the terminal control device (TCIJ),
The character codes for one screen stored in the character memory 1 are edited, and these character code groups are transferred from the TCE and stored in the character memory 1.

Two parameter memories are characteristic memories of this embodiment. For example, the display screen I divided as shown in Figure 2 (q)
, l, ■, the starting point address A+ (XA
I, YA Ding), f3+ (Xn Ding YBI), C+ (X
a+, Ya+) end point At(XAy.

'(At), B2(XB), YB's), Cy(Xo2
, yaz), and control information (for example, known personality definition information) A, B, and C for each divided screen are stored as shown in FIG. 2(a). These parameter information is controlled and determined by the TCE depending on the number of split screens and the situation of splitting, and is transferred from the TCE and stored in the parameter memory 2.

When writing or reading parameter information to or from the parameter memory 2, the address is designated by the address counter 5. That is, the parameter memory control section 1 described later
2 and/-kens! The address from the control unit 15 is
One of the addresses is selected by the address switch 15 and set in the air address counter 5 of the address 75, and the count value is updated successively thereafter. Here, the case where the address from the sequence controller 12 is selected is when writing the parameter information from the 'I' CE to the parameter memory 2, and the address from the sequence controller 15 is selected. The selected case is when the Noshirameter 1 blue report is extracted from the parameter memory 2.

The character memory address counter 4 specifies an address on the character memory 1 in order to write and read a character code in the character memory 1.

Starting point addresses A1, B+, C+ and ending point address AJ132 of display address latch 5 and parameter memory 2,
Latch C. Is this the display address counter described later? This is to make a comparison. The display format latch 6 latches control information for controlling display characteristics, and includes: - control information A read from the parameter memory 2;
, 13, C, etc. The character generator 8 is a memory that stores a large number of character noku turns, and inputs the character code read from the character memory 1 as an address, and outputs the corresponding dotsu L noku turn.

The display address counter 9 is an address counter that indicates the display position on the CRT display screen, and takes values from address O to address X. Note that the value of this at trace counter 9 is updated in synchronization with the timing signal 'J'0.

The shift register iou temporarily sets the character pattern output from the character generator 8, shifts it bit by bit, and sends it to the CRT.

The arithmetic unit 11 performs a -C logical operation between the address, for example, AI, At, indicating the divided area read out from the parameter memory 2 and the value in the display address counter 9.

In order to store the parameter information transferred from the i' CE in the parameter memory 2, the parameter memory control unit 12 specifies an address on this memory 2 ('l'cl (transferred from, y:21). The addresses are generated based on the start and end points of the divided column screen read from the control unit 1 and the parameter memory 2, for example, AI, AI.
is within the display address counter 9.
The arithmetic unit 11 is operated in the order of ζ. As a result of this load, if it is necessary to read the next parameter information, the parameter memory address counter 60 is pressed, and conversely, if there is no bamboo leaf to read the parameter, the display address counter 9 and the key Y of the parameter memory 2 are pressed. Character display start pointer and character memorator 1/counter 4 etc. are set.

In addition, the display form information read from the parameter memory 2 is input to the sequence control unit output unit 1δ, and the display control unit 14 make it work.

Based on the control information transferred via the sequence control section 15, the display control section 14 controls, for example, plinking, coloring, renovating, etc., at the character nest position that is input for 1 hour.

Next, the operation of the character display device configured in this manner will be explained.

Now, as shown in FIG. 2(b), character groups A, )3. C is an arbitrary address, for example, character group A is lower than address n, and B is also lower than address n.
Assume that from +h, C is written from address n+m, and at the same time, parameter information that determines the display form of this character group A, B, and C is stored in parameter memory 2 as H. is the second [&! As shown in (a), ■
Indicates the display position of the CRT J-Start address (3+ to A1/
/C+) and end point address (827'B2/C2) all, ■Character group person to be displayed, 13, start address of C, ■Character definition information that controls the display form of character group For example, high brightness / plink / 17 , :-, etc. are stored.

Parameter information within the address n indicated by the parameter memory address counter 3 is output from the parameter memory 2.

The above n address has an address AI indicating the display address range,
AJ is stored. Addresses AI and A2 indicating this display address range are temporarily stored in the display address latch 5 and input to the arithmetic unit 11. At the same time, the contents of the display address counter 9 are input to the arithmetic unit 11. This display address counter 9 indicates the display address of the CRT, and every hour n, nil, n+2---n+n l
Take the ring counter value of ln.

In the arithmetic unit 11, address A in the display address range
A logical operation is performed between I, Aj and address n of the display address counter. In the sequence control unit 15, the value n of the display address counter 9 is set to the display address AI.
It is checked whether it exists in the range from A2 to A2. As a result, the address of the display address counter 9 changes from AI to A2.
If it exists in the range of parameter memory address color/
3 is incremented by "1'" and the display character start address at the nil address is stored in the character memory address counter 4. At the same time, the parameter memory address counter 5 is incremented by "1". The character memory address counter 4 reads the character code from the character memory 1. This character code is sequentially input to the character generator 8, from which the character pattern to be displayed is output and subjected to parity conversion. At this time, the contents of the display type latch 6 are analyzed by the 7-character control section 13, and the display control section 14 outputs a command according to the character code character definition control information to the CRT.

Next, when the display address counter 9 reaches address n+1 after a certain time 'r, the arithmetic unit 11 determines whether the contents of the counter 9 are within the contents of the display address latch 5, that is, the range from A1 to A2. and the sequence control unit 15. If the contents of the counter 9 at address n+1 exist in the address range from AI to A2, the previous state is maintained and the character address counter 4 is incremented by "1" by the 7-case control section 14 to read out the character group.

Thereafter, it is input to the shift register 10 via the character generator 8.

On the other hand, the content of display address counter 9 at address n+1 is AI
If the address does not exist in the address range from A2 to
The arithmetic unit 11 and the sequence control unit 13 perform a search to determine whether or not it is included in the range of C7. When the resulting display address range is -iL, a character code is displayed from the character memory 1, and a character pattern is output from the character generator 8. The following operations are similar to those described above.

An embodiment of the present invention has been described above, but in a modified example of the present invention, the sequence control section is composed of 1 (・OM (read only memory)), and the control panzer memory section is composed of R, AM (Random Access Memory) etc., the hardware can be simplified and display control with a large degree of freedom is possible.

However, since the contents of the control buffer memory can be controlled, free screen formatting is possible, and multiple screen split displays can be used for multiple purposes.Advantages of the Invention According to the present invention, Dividing the display screen into a plurality of parts can be easily done by simplifying the hardware. However, the number of divisible surfaces and size can be set arbitrarily.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a character display device according to an embodiment of the present invention, and FIG. 2 is a diagram showing a seven-way format of a character memory and a parameter memory, and a divided form of a display screen. character character meri 2...parameter memory 81 character generator 1490 display control section 20 (C) table 1h flush! ”, 9Q-

Claims (2)

[Claims] (1) It has a first memory that stores codes of characters, symbols, etc. to be output, and a character generator that outputs a dot pattern corresponding to the code that is output 11th Fi from the fourth memory, In an information output device that outputs a dot pattern outputted from the character generator on a certain output screen in a typical manner, in order to divide the output screen into a plurality of parts, parameter information including addresses indicating the start and end points of each divided screen is provided. a second memory for storing a dot pattern, an address indicating means for indicating an address on an output screen where a dot pattern is clearly output, and a start point and an end point address outputted from the second memory and sent from the address indicating means. 1. A split control method, comprising: a control means for controlling an address for accessing the first memory so as to output a character code from the first memory in response to a split screen based on the address assigned to the first memory. (2) A control device is connected to the information output device, and the character code stored in the first memory and the parameter information stored in the second memory are transferred from the control device. The split control method according to item 1, characterized in that: