SU1185324A1 - Device for editing information on crt screen - Google Patents

Description

The invention relates to computing and can be used when designing display devices.

The purpose of the invention is to increase the speed and simplify the device.

FIG. 1 shows a block diagram of the proposed device; in FIG. 2 examples *, editing with given direction and directive for Frag-U

"cops' given by two markers;

"'na' Fig, .З / г * block diagram of the editing algorithm Fragment of the displayed information in accordance with the directive and the direction specified by the operator.

The device contains a keyboard unit 1, a switch 2, a microprocessor 3, the first memory block 4, a 5-character generator, an OR 6 element, an indication block 7, the first register of the marker 8, the first marker generator 9, the second memory block 10, a pulse generator 11 , the second marker register 12, the second marker generator 13, the register 25 14 of the editing direction code, the converter of the 15 codes and the register 16

code editing directives.

I

The device works as follows. thirty

In the regeneration mode, the pulse generator 11 generates a signal for frame and line synchronization to the display unit 7, a generator of 5 symbols, the first 9 and second 13 markers generators and a converter of 15 codes • “row and column codes in the familiarity decomposition matrix, and The first memory block 4, the first 8 and the second 12 marker registers, the editing code of the <0 direction of editing 14 and the code of editing directives 16 are the current mapping address. In accordance with the current mapping address, information from the first memory block 4 is sent to the generator 5 characters, from the first and second registers 8 and 12 markers to the first and second generators 9 and 13 markers, respectively, from register 14 of the direction code 50 ducting - on the converter of 15 codes, from register 16 of the code of editing directives - on the generator of 5 characters. In this case, the generators 5, 9 and '

13, via the element OR 6, for displaying on the display unit 7, signals for forming symbols, 'two markers, direction indicators and directives, respectively, are generated. At the same time, for the period of the frame scan of the display unit 7, all the cells of the first memory block 4 are sequentially polled, each of which corresponds to a certain familiarity on the screen of the display unit 7, the first and second registers 8 and 12 markers, whose display addresses can vary within the cell addresses of the first memory block 4, editing direction code 14 registers and editing directive code 16, in which the display addresses of direction indicators and directives are fixed outside the cell addresses of the first memory block 4. Thus, the regeneration is ensured with the frame rate of the information display unit 7 displayed on the screen, namely:

- characters in accordance with the character codes stored in the first memory block 4, and the shape of the characters specified by the character generator 5;

- two markers in accordance with the addresses and vertical size stored in registers 8 and 12, and the form specified by generators 9 and 13;

- directions in accordance with the code and the fixed address specified by the register 14 of the editing direction code, and the form defined by the converter 15 codes;

- directives in accordance with the code stored in the code register of editing directives 16, the address recorded in it, and the form specified by the 5-character generator.

In the exchange mode, the microprocessor 3 receives a command from the keyboard unit 1 or a computer through the switch 2 and calculates the starting address of the corresponding firmware with its output to the second memory unit 10. After that, the microprocessor 3 receives from the second memory block 10 a micro-command code and processes the information participating in the exchange in accordance with the selected microprogram and synchronization from the pulse generator 11. Processing consists in calculating the subsequent address of the micro-command for transmitting it to the second memory block 10, the address of displaying the symbol — for: transmitting it to the first memory block 4, display addresses and vertical sizes of the markers — for transmitting them

3

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to registers 8 and 12, the code of the direction of editing - for transferring it to register 14 or the code of editing directives - for transferring it to register 16; in receiving information from the switch 2, the first memory block 4 and the registers 8, 12, 14 or 16; in converting the received information and transmitting · transformation results in switch 2, the first block memory 4, the registers 8, 12, 14 or 16. That way Kim ^1, yn ^ is exchanged between block 1 formatsdey keyboard

or the computer and the switch 2 under the control of the microprocessor 3 in accordance with the firmware stored in the second memory block 10.

When editing a fragment of the displayed information from the keyboard unit 1, the direction and the directive for editing the fragment are set, the markers are moved and their vertical size is set to limit the fragment and the specified directive is executed in accordance with the firmware implementing the algorithm shown in FIG. 3. Setting the direction of editing is carried out by simultaneously pressing the "EZ" key and one of the keys for manually moving the marker. In this case, the microprocessor 3 enters the corresponding code (C) into the register of the editing direction code and the corresponding sign is displayed on the screen of the display unit 7 in the direction indicator field. For 64 characters in the line, the editing direction code acquires the following values when you press the keys for manually moving the marker: +1 - to the right ("- * ·"), -1 to the left ("<е-2 '), +64 - down (" | ") and -64 - up 04"). Setting an editing directive is the same as setting a direction, i.e. by simultaneously pressing the "ZD" key and one of the character keys (for example, "K" - copying _} "C" - shift). In this case, the microprocessor .3 enters the code of this symbol into the register 16 of the editing directive code and the corresponding sign is displayed on the screen of the display unit 7 in the directive indicator field. To determine the boundaries of the edited fragment horizontally, the first marker is set from block 1 of the keyboard before the first left familiarity of the first line of the fragment,

and the second - after the last acquaintance

that To determine the boundaries of the edited fragment vertically by simultaneously pressing the "ЗР" and

₅ one of the numeric keys in the senior bits of the registers 8 and 12, the microprocessor 3 brings a new content that determines the vertical size of the markers, taking into account the increment. With

10 this is shown on the screen of the display unit 7, the markers are drawn down from the initial position by a specified number of signposts. To compress the markers to their original position

15 one character, it is necessary on block 1 of the keyboard simultaneously with the "ЗР" key, press the "1" key. When pressing the ID key on block 1, microprocessor 3 executes one cycle of editing a fragment of information displayed on block 7 in accordance with the specified direction and editing directive for a fragment specified by two markers. When the directive is executed, you "Copy" the microprocessor 3, after analyzing the register 16 of the code of the editing directives (block (D) of figure 3), overwrites the information in the first memory block 4 from the area defined by the addresses covered

the first marker to the area defined by the addresses covered by the second marker (blocks @ and (4) of Fig. 3), after which the microprocessor 3 queries the register 14 of the editing direction code and lowers the new registers of the markers 8 and 12 by moving the markers according to a given direction

40 (block (5) of Fig. 3). When executing the "Shift" directive, the microprocessor 3, after analyzing (T) the register 16 of the code of the editing directives, overwrites the information from the area of the first memory block 4 enclosed between the first and second marker to the new same area, having previously polled the register 14 of the editing direction code and calculating the new 50 values of the contents of the lower digits of the registers of markers 8 and 12 and moving the markers and information in accordance with a given direction (blocks

& & oh oh

55 and © fig. 3). FIG. 2a shows an example of the execution of the copy directive;

in FIG. 2 b - shift the piece of information. Solid lines image $

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on the marker information after the execution of the directive, with the stroke information - before the execution.

Thus, improved performance and simplified device layout.

The time required to copy or shift a fragment of the displayed information on the display unit screen

the proposed device is determined by the Formulas:

K1

"(And + p) C

T _c ,% Ν) ·· Su,

where T _m - fragment coding time:

ten

- fragment shear time;

- the number of increments of the marker size to cover the fragment vertically.

second marker first marker

Fragment of ов 7 σ σ information

P g ► -ί one

1 | —Mrr-- '. and ----WITH l

Directive indicator

editing

Editing Direction Indicator

\ drank indication

\ Padr otavrazhaniya information

FIG. 2

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Claims (2)

DEVICE FOR EDITING INFORMATION ON SCREEN SCREEN, containing serially connected keyboard unit, switch, microprocessor, first memory, symbol generator, OR element and display unit, second output of the first memory block connected to the second microprocessor input, second output of the microprocessor connected to the second input of the switch connected in series the first register of the marker and the first generator of the marker; the input of the first register of the marker is connected to the first output of the microprocessor; the output of the first * generator of the brand Pa connected to the second input element OR, the second output of the first register of the marker is connected to the second input of the microprocessor, the second memory block, the input of which is connected to the third output of the microprocessor, and the output to the third input of the microprocessor, pulse generator, The first output of which is connected to the fourth microprocessor input, the second output to the second inputs of the first memory block and the first marker register, the third output to the second inputs of the character generator and the first marker generator, the fourth output of the pulse generator is connected to the second input of the display unit, characterized by That, in order to improve the speed and control of the device, it contains a second register of the marker connected in series, connected to the first output of the microprocessor, and a second generator of the marker connected with the third input of the OR element, serially connected to the edit direction code register, connected to the first output of the microprocessor, and a code converter connected to the fourth input of the OR element, edit code code register, the first input of which is connected to the first output of the microprocessor, and the output is with the first input of the character generator, the second outputs of the second register of the marker, the register of the editing direction code and the register of the editing directive code are connected to the second input of the microprocessor, and the second inputs are with the second output of the pulse generator, the second inputs of the second marker generator and the code converter are connected to the third output of the pulse generator. ZTS ..., 1185324 1185324 2