SU640286A1 - Arrangement for interfacing subscribers with communication channels - Google Patents

Description

one

The invention relates to the field of computing, in particular to devices for interfacing subscribers with communication channels, and can be used in message switching systems.

A device for interfacing subscribers with communication channels is known, comprising an input interface unit, an input polling unit, an address coder, a control unit, a drive, an address analysis unit, an input storage unit, a register, an address polling unit, a decoder, an output storage unit, an encoder. , output mating unit.

A disadvantage of the known device is that it requires increased equipment costs in its implementation.

The closest to the invention in technical terms and the result achieved is a device for interfacing subscribers with communication channels 2, containing the first switch, the first input of which is connected to the first input of the device, the second switch, the first, BTOpoii inputs and output of which are connected respectively to the nerve the output of the control unit; 1eni, the output of the buffer storage unit of the data and the first output of the device, the polling unit, the output of which is connected to the second output of the device, the response code register,

2

the input of which is connected to the second input of the device, the write address register, the read address storage unit, the message storage unit, the message address register, the occupied address memory block, and the address decoder.

The disadvantage of the device is the low speed, due to the fact that the transfer of information to subscribers can be carried out only by accumulating the entire message, and the information in the drive can be played until all the subscribers can receive information.

The purpose of the invention is a new speed increase.

The goal is achieved by the fact that the device contains a channel status register and a message end decoder, the nerve output of the first switch connected to the input of the message address register, the first and second outputs of which are connected to the first inputs of the control unit and the address address generator, respectively, the output of which is connected to the input The polling unit n with the first input of the periicTra of the condition of the drops, the second input and the output of which are connected respectively with the output of the response code regnstra and with the burning input of the unit is equalized, input-output d which is connected to the entrance-B1 1khod.1 b. yuka

memory of addresses of queued channels, the output of which is connected to the second input of the address decoder, the second output of the control unit through the storage unit of the address of readout of the memory 1 to the first input of the message storage unit, the second input of which is connected to the third output of the control unit, the second the output of the first switch is connected to the input of the end-to-end decoder, the first and second outputs of which are connected respectively to the first input of the buffer storage unit and to the third input of the control unit, four first and fifth outputs which are connected respectively to the second inputs of the buffer storage unit and the first switch, and an input-output storage unit soobsh, eny connected to the input-output of the second switch.

The drawing shows the proposed device.

The device for interfacing subscribers with communication channels contains the first switch 1, the address address register 2, the address decoder 3, the onros block 4, the message end decoder 5, the occupied channel memory block 6, the buffer storage block 7, the control block 8 , channel state register 9, response code register 10, second switch 11, write address register 12, message storage unit 13, read address storage unit 14.

The device works as follows.

Mode of operation without block 13.

The input of the switch 1 receives a message from the communication channel. The message has the following structure: the address part, the information part and the end-of-message characters.

But the register 2 is filled in by the control unit 8, which switches the switch 1 and sends the information flow through the decoder 5 to the input of block 7. The address part of the message is decoded by the decoder 3 and transmitted to the input of the polling unit 4 and the input Regnstra 9. Last remembers the addresses of the respondents. The result of polling channels is fixed on register 10. Register 9 outputs to the control unit 8 information about occupied and free channels.

The subscriber address analysis process and polling takes place in parallel with the recording of the information part of the message in block 7. If all channels are free, the control unit 8 connects the switch 11 in accordance with the selected subscriber addresses, and the information part of the message from block 7 enters the channel. In this device, as a unit 7, a device is used, in which the recording and reading of information can be performed independently of each other.

Mode of operation with block 13.

Work with block 13 is carried out when, as a result of the analysis of free 1, 1 channel, part of the channels will be occupied. In this case, the b-lok control jpeg 8 finn.ni3ii rvet the first free a; ipr-c zone of block I.i and sets this address to pOiHCTpc 1 write addresses. Information about the occupied channels and the address of the central zone of:; the signal is recorded in block 6.

The end of message symbols, analyzed by the decoder 5, are converted by block 8 to sppa; 1s, which will switch switch 1 to its original state.

With the next post / sentence, the process of analyzing the address and recording information will be repeated as in the case of operation of the device without block 13 prior to the decryption of addresses. At this stage, one of the inputs of the decoder 3 addresses is iodized with the addresses of the new message, and the other input contains all the addresses of the channels recorded in block 6 (i.e. the addresses of those channels that were in the previous exchange series are occupied). Next, polling unit 4, register 10 and register 9 are working. All information about the state of the channels is analyzed in control unit 8. On the ethane of this analysis block:; Control 8 receives information from block 6 about the number of unlinked channels and the number of zones in which information is available to be read. If at least one channel number of the current message matches the number of the previously requested channel that was occupied in the previous exchange series, the control unit analyzes the address of the first free zone of block 13, sets it at register 12 of the write address and writes in block 6 the current address of the free channel n is the zone address of block 13. The old value is erased. For reading in this channel, the information that would have been prepared. intended to be exchanged earlier, t. p. In this series, when this channel was occupied. Analysis of the sequence of reading 11 information 1: n is solved by the control unit 8 in such a way that it reads the readings. And I receive 1 information in the order I received to this subscriber. If in this exchange series there is no match for the address and the addresses of the channels previously occupied, the current information in block 13 is not recorded. The control unit 8 sets in block 14 the zone numbers of block 13, which are readable to readers, and switch 11 connects these zones to three subscribers, in addition, the same switch connects current 1O 1H1formacion to block 13 and to subscribers