SU1513494A1 - Device for asynchronous repeated receiving - Google Patents

Abstract

The invention relates to communication technology and can be used in digital transmission systems using the stuffing method at the switching points of digital streams. The aim of the invention is to increase its functional reliability. To achieve this goal, a device containing blocks of synchronous and asynchronous pulse generators, receivers of clock pulses and stuffing commands, an information distributor, three blocks of key elements, record and read distributors, a memory block, a stuffing command driver and an output signal generator that provides receiving and writing and reading signals, a phase detector and a fourth block of key elements are introduced, which allow to introduce a stuffing pulse to match the transmit and receive speeds without Tel'nykh storage device and the generator with a phase locked loop. 1 il.

Description

The invention relates to communication technology and can be used in digital transmission systems using the tapping method at the switching points of digital streams.

The purpose of the invention is to increase its functional reliability.

The drawing shows the functional scheme of the device for asynchronous re-reception.

The device contains a receiver 1 clock pulses, a block 2 of clock generators, an information dispenser 3, a command receiver, a first block 5 of key elements, a record distributor 6, a second block 7 of key elements, a memory block 8, a readout distributor 9, a block 10 of asynchronous pulse generators , shaper 11 teams, third block 12 key

elements, phase detector 13, the fourth block of key elements, shaper 15 output signals.

The device works as follows, i

The information input of the device receives a digital stream containing sync pulses and group signals of several transmission channels, with each group signal containing information signals and-stuffing commands (matching signal transmission rates). In the receiver 1 of the clock pulses, the synchronization pulses of the generators of the block 2 and are released. together with clock input pulses are applied to. In block 2, control pulses are generated that are synchronous with the information signals, and are fed

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into blocks 1,3, and 5. In the distributor, 3 information is allocated a group channel channel, from which stuffing commands are allocated in receiver 4. The control pulses from the output of block 2 through the first block 5 of the key elements arrive at the input of the distributor 6 of the record. In block 5, all those pulses that do not correspond to the arrival of information signals are excluded from the control pulses. In the recording distributor 6, control pulses IIS are generated alternately at its outputs.

Neither this voltage from the threshold value in form 11 is generated by the stuffing team impulses,

providing either the addition of a read pulse or the elimination of the corresponding read pulse in the third block 12 of the key elements, and thus the matching of the speeds of the input and output digital streams.

To prevent the passage of information pulses when reading in the case of large and fast mismatches

that are fed to the corresponding input and output speeds

inputs of the second block 7 key I elements, through which, if I have these pulses, the information signals I are fed to the inputs of the corresponding

j cells of memory block 8. In addition, the upstream output of block 6 and the corresponding) i equal pulse at the last wide pulse output at one of the additional digit stream introduced the fourth block 1 of key elements, at the outputs of which pulses appear when the narrow pulse coincides with the additional distributor .6 the record is sharpened by I and fed to the auxiliary output: of this block. Memory block 8 contains i memory cells, into which I signals are written, coming from the corresponding outputs of block 7, and from which signals are read by commands, alternately: coming from the corresponding outputs

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target outputs of block 9. The formation time of these pulses is synchronized by a control pulse of a block of 10 generators of asynchronous pulses, which is fed to the key elements of the AND block,

Information signals from the output of memory block 8, stuffing commands with

dispenser 9 readout. Alternately, 30 outputs of the command driver 11 and the synchronously read pulses are summed and fed to the output of block 8.

Read pulses, asynchronous: With write pulses, are formed in

Transmission pulses from the output of block 10 of the generators of asynchronous pulses are combined in the shaper 15 output signals, to information inputs.

streams of adjacent signal acquisition points.

Claims (1)

Invention Formula A device for asynchronous transfer that contains a clock receiver, the first and second inputs of which are, respectively, J of information block 10 of the asynchronous generators for which transmission pulse pulses are received in the time interval of the output information transmission channel detected by pulses at the input of block 10. In accordance with the pulses at the 40th input of the readout distributor 9, control pulses alternately appear at its outputs, which are fed to the corresponding inputs of the memory block 8. In addition, pulses that control the immersion and clock inputs of the device on the group of the first outputs are controlled by the synchronous pulse generator, the first input of which is combined with the second input of the receiver of clock pulses and the second input is connected to the output of the receiver of clock pulses, the information distributor, whose first input is connected to the first input of the receiver, the receiver of commands, The first one of the outputs of the distributors 6 and 9, the inlet of which is connected to the output of the record and readout, respectively, of the information balancer, the first block is connected to the voltage corresponding to the key elements th input magnitude koto- velocity mismatch cerned is connected to receiver output Ko input and output digital flux ,, Mand third receiver input sinhroim- Cove. Depending on the sign of the deviation of the pulses and the second inputs of the distributor the limiter and the group of the last outputs of block 9 are expanded and fed to the additional outputs of this block. 50 unit 6 and the corresponding) wide pulse on one of the additional digit flow introduced the fourth block 1 of key elements, the outputs of which appear pulses when the narrow pulse coincides with the additional target outputs of block 9. The formation time of these pulses is synchronized by a control pulse of a block of 10 generators of asynchronous pulses, which is fed to the key elements of the AND block, Information signals from the output of memory block 8, stuffing commands with the output of the command generator 11 and the synchronization pulses of the transmission from the output of the block 10 of the generators of asynchronous pulses are combined in the driver 15 of the output signals, to the information inputs transmissions of which are pulsed streams of adjacent signal acquisition points. Invention Formula A device for asynchronous transfer that contains a clock receiver, the first and second inputs of which are, respectively, of which pulsed signals arrive. Zionic and clock inputs of the device “synchronous pulse generator block, information, the command receiver and the first block of key elements are connected respectively to the first to fourth outputs of the synchronous pulse generator block, the recording distributor, which is connected to the output of the first block of key elements, the second block of key elements, whose control inputs are connected to the corresponding outputs of the recording distributor and the information input is connected to the output of the information distributor, a memory block whose recording inputs are connected to the corresponding outputs of the second key of the key copers, an asynchronous pulse generator block whose input is a synchronization input of the device transmission, a command driver, the first input of which is connected to the first output of the asynchronous pulse generator block, a third block of key elements, the first and second inputs of which are connected respectively to the output of the command driver and the second the output of the asynchronous pulse generator unit, the read distributor, whose input is connected to the output of the third block of key elements and whose read outputs are connected with the corresponding readout inputs of the memory unit, and the output driver, the first, second and third inputs of which are connected respectively to the output of the memory unit, the output of the command generator and the TRAITI, the output of the asynchronous pulse generator unit, the output and the group of inputs are output and informational transmission inputs of the device, characterized in that, in order to increase functional reliability, a phase detector and a fourth block of key elements are introduced, the first and second inputs of the phase detector are connected to the last write output and the last read output, respectively, of the write distributor and read distributor, the output is connected to the second input of the command generator, the first input of the fourth block of key elements is connected to the output of the write distributor, the second and third inputs are connected to the first and BTopbiM outputs of the read distributor, the fourth the input is connected to the first output of the generator of asynchronous pulses, and the first and second outputs are connected respectively to the third and fourth inputs; ate teams.