SU746736A1 - Buffer storage - Google Patents

Description

The invention relates to computing, can be used when displaying and registering sign and graphic information with playback devices of scanning type: alphanumeric printing devices (ADC), card perforation devices, cathode ray tubes with television raster, etc. reducing the time of connection of the source with the playback device and for combining the directions of their sweeps in computer complexes. However, these devices have low speed and, in addition, require a relatively large number of communication channels with the playback device and the use of faster elements with an increase in the number of characters in the alphabet, the number of positions and the playback speed of the playback device. The closest in technical essence to the proposed is a print control device (UUPch-23), used when outputting information from the Minsk-23 computer to an ATCU-128-3M alphanumeric printing device 2. The device contains a position register, a descriptor, output register, signal read / write block, information bar, control block, character register, buffer storage, character code read / write block, code comparison block. The buffer store contains 128 (by the number of printing positions) of seven-digit cells for storing binary codes of characters to be printed in one textual (semantic) line. The address of the cell corresponds to the position number in the print line of the ATsPU128-ZM. One of 95 characters can be played at each position. Structurally, the drive is combined with an output matrix, which plays the role of an output register for 128 bits according to the number of printing positions in the ATCU-128-3M line. The scheme implements three operations: “entry,” analysis, “printing. The disadvantages of the prototype: - great time to prepare input data for printing;

- low speed leads to an increase in the number of parallel communication channels with the ADCS and does not allow replacing the ADC128-ZM with its more advanced model without replacing the device nodes with faster ones.

- The cost of electronic equipment is relatively high due to the complexity of the timing diagram.

 the invention is to increase the speed of the device.

To do this, the device, containing, its register of information signal symbols and serially connected signal position register, decoder, output register and signal read / write block, the first output of which is connected to the information input of the output register, and the second one - with the information bus, the control block, Perday, the output of which is connected respectively to the control inputs of the position register and the character register, the second output to the control input of the write-read block, the third output to the data bus, and the control inputs of the control unit are connected to respective inputs insensitive, introduced an additional deschifrator connected to the second output register and the second input position of the recording-reading unit, and an output insensitive connected to the second input of the decoder.

The drawing shows a structural electrical circuit of the proposed device.

The device contains a position register 1, a decimator 2, an output register 3, a block for reading and reading signals 4, an information bar 5, a control block 6, a register of symbols 7, an information bar 8, connection boundaries 9, 10, and an additional decoder 11.

In this device, the playback information (position number and its corresponding symbol) is entered directly into the output register in its received form (position code).

The structure of the device allows you to prepare the information for the conclusion without the operation "Analysis required in the prototype.

The device works as follows.

Via the communication bus 9, the control unit 6 receives a signal on which this unit generates a series of control pulses for recording the input information into the output register 3.

The character code S to be reproduced at a given position is fed to the character register 7. The position code P is generated by counting the pulses by the position register 1. These pulses go to register 1 from control unit 6 for each character code S received in the device

The code S from the output of the counter-register 7 and the part of the code of the position P from the first output of the register I are fed to the decryptor 2, forming the code of the number of the information group in the semantic playback line.

The code P is fed to the decoder 11, from where, in accordance with this code, the unit of the position code enters the corresponding bit in the read / write unit 4. On the recording signal from the control unit 6, it is recorded in the information group,

defined by code. The described process is repeated for the code of each character to be reproduced in one semantic line.

Thus, over N reversal cycles

to the device (N is the number of playback positions), the input information is not only accepted for storage (the function of reducing the communication time with the data source), but also prepared for output to playback (the function of combining the directions of the sweeps), and this does not require any communication the playback device, nor the operation "Analysis (as required in the known device). The autonomy of the device makes it possible to build

flexible programs for displaying information for reproduction on one or several sweepers.

The technical and economic effect is as follows:

1) The high speed of preparing information for output, determined by the structure of the proposed device, makes it possible to reduce the number of information communication channels with a playback device, apply the slowest and smallest drives, increase the number of playback positions, characters in the alphabet and speed of playback devices;

2) Allows you to create cheap devices for displaying graphical information on a CRT screen with a television raster,

the functionality of which is comparable to the capabilities of devices for displaying arbitrary information on the screen, which are actually specialized computers.

The effect is enhanced by the fact that the playback sweepers are mass-use devices.

Claims (1)

Invention Formula The buffer storage device containing the register of characters information. signals and the serially connected signal position register, the decoder, the output register and the signal reading / reading unit, the first output of which is connected to the information input of the output register, and the second output from the information bus, and the control unit, the first output of which is connected respectively to the control inputs of the position register and the character register, the second output to the control input of the write-read unit, the third output with information thickness, the control inputs of the control unit are connected to the corresponding inputs of the register characters, characterized in that, in order to increase the speed of the device, it contains an additional decryptor connected to the second output of the position register and the second input of the signal read / write unit, and the output Registers symbols connected to the second input deschifratora.