SU822171A1 - Information input-output arrangement - Google Patents

Description

one

The invention relates to automation and computing, in particular, to devices for visual presentation of the output data on a screen of a cathode ray tube (CRT), and can be used in the construction of multi-console information display systems based on cathode ray indicators.

A device for editing alphanumeric information is known on a CRT screen containing an input / output register and a buffer memory device associated with a number register, a control unit connected directly and through the main address register with the address diadframer connected to the buffer memory device, the comparison scheme, the register of the additional address and the register of the label, which is connected to the control unit associated with the comparison scheme, the main address register and the comparison scheme, connected between themselves And additional address register connected to the address decoder l.

However, this device is intended only for editing information on a CRT screen by one user and is quite difficult.

It is also known a device for input-output information containing CRTs connected to character generators, reception gates connected to a memory unit that is connected to a control unit / connected to dynamic registers, comparison circuits and address set circuits, high-order outputs of dynamic registers and the address set circuits are connected to comparison circuits connected to the receive valves, and the low-order outputs of the dynamic case are connected to the character generator 2.

However, this device works only in one information display mode and is also quite difficult.

The purpose of the invention is to simplify the device, expand its functionality by combining the functions of image formation, and editing the information.

The set goal is achieved by the fact that a device for information input-output, an information recording unit, an information reading unit and a control unit connected to character memory blocks, each of which is connected via a character generator with a corresponding CRT, are inserted in series. subscriber number memory connected to the control unit, input information address generation unit connected to the control unit and symbol memory blocks, comparison unit connected to the control unit and the block a symbol memory, and an output information address formatting unit connected to the control unit. The drawing shows a block diagram of a device for input / output information.

The device contains an information recording unit 1, a subscriber number memory block 2, a control block 3, an input information address generating unit 4, an output information address generation unit 5, a comparison block b, character memory blocks 7, 8 character generators, CRT 9 and% Lock 10 reading information.

The device works in four following modes: in the mode of displaying information on a CRT on request of any of the n subscribers, in the mode of generating information by any of the n subscribers with a display on the CRT, in the mode of editing information displayed on the CRT, in any of the n subscribers and in the mode information generated by any of the n subscribers. When requesting any of the subscribers, the request signal arrives at the input of control block 3, and the information required by the subscriber is sent to the data bus. The control unit 3 connects to the local buses of the units 7 a unit 4 for forming the input information addresses. The information received by block 1 at the addresses specified by block 4 is rewritten into block 7. After writing to the character memory blocks 7, control unit 3 connects the address information buses of the output information blocks to the address buses of blocks 7. The reading is made from consecutive cells of block 7 ,. from the output of which the character codes are fed to the input of the 8 character generator, where the images of the characters are stored in the form of matrix formats. In generator 8, the format of the symbol is converted into CRT control signals 9.

When generating information by any subscriber, the control unit provides information on the input bus to block 1 and is stored there until the moment it is transferred to block 7 of this subscriber. H / Simultaneously, control block 3 connects the comparison block to blocks 4 and 5. Since block 5 is working in continuous mode and determines the address of the currently readable cell of the character memory block 7 or the place of the currently displayed character, then if the codes in blocks 4 and 5 match, the output of the comparison block b gives a signal by which the code from the output of block 1 is recorded in block 7 of the subscriber who is generating the information at that moment. Upon completion of writing the code to block 7, the control unit provides an increment. of the address code in block 4 by +1 and the next match of codes 4 and 5 from block 1, the next code is written into the corresponding cell of block 7. From the output of block 7, the character codes go to the input of the 8 character generator, where symbols are stored as matrix Formats m x. p. In generator 8, the format is converted into a symbol into CRT control signals 9,

If it is necessary to edit the information displayed on the CRT 9, block 4 performs the functions of a tag counter. The control unit 3 provides connection to the inputs of the unit, comparing units 4 and 5. The device then works in the same way as in the information generation mode. In this case, the subscriber determines the place of editing by entering the code into block 4, which in this mode performs the function of a tag counter.

If it is necessary to output information generated or edited by any of the subscribers to an external device, the address bus of the corresponding character memory unit 7 is disconnected from unit 5 and connected to unit 4. At the same time, control unit 3 connects information reading unit 10 to information output from corresponding unit 7. In accordance with the accepted exchange algorithm between the device and the systems associated with it, the contents of block 7 will be fed to the output bus of block 1, with consecutive readable ID addresses The cells of this memory block 7. Symbols will be formed in block 4.

If the device provides one subscriber with any of the modes of forming, editing, and downloading information to an external device, other subscribers can work with the device in the information display mode at the same time. Block 3 organizes the transfer of address information from the first subscriber, from block 4 to block 2. After the other subscribers receive the required information on the CRT 9, block 3 organizes the return of address information from block 2 to block 4, ensuring that the first subscriber is not interrupted. Servicing several CUSTOMER subscribers in order of priority or in accordance with the priority set in block 3. The time of the device itself is determined by the time required to process and display one symbol of information. Thus, the functionality of the device is expanded to display information by ensuring that the device operates in the display, generation, editing, and output modes by any subscriber while reducing hardware costs.

Claims (2)

1. USSR author's certificate  452022, cl. G 06 K 15 / 20,10.07.72. 2. USSR author's certificate 0 451109, cl. G 06 K 15 / 20.06.09.71 (prototype).