SU843265A1 - Multichannel data transmitting system - Google Patents

Description

one

The invention relates to communication technology and can be used in the automatic exchange of telecode information in both wired and radio communication networks operating on composite duplex switched message channels.

A multi-channel data transmission system is known, comprising a message distribution unit connected by its inputs and outputs, respectively, to the inputs and outputs of the decoder, the block, the information input / output unit, the corresponding output of the message distribution unit being connected to the first inputs of the error protection n-blocks l .

However, the known system has a low data rate.

The purpose of the invention is to increase the speed of data transmission.

The goal is achieved in a multi-channel data transmission system containing a message distribution unit connected by CBOHNOI inputs and outputs, respectively, to the inputs and outputs of the decoder, memory unit, information input / output unit, with the corresponding output of the message distribution unit error protection, the signal conditioner is inserted into each channel; The main input of the message distribution unit, the analyzer output is connected to the second inputs of the error protection block and the control unit, while the input of the signal conditioning generator is connected to the first input of the error protection block and the output to the first output of the error protection block, the second output which is connected to the first output of the time stamp sensor, the second output of which is connected to the third input of the PROTECTION against errors, and the third and fourth slots of which are respectively connected to the third input of the control input control unit ora, Dru goy input coupled to chetverTtat input of error protection. The drawing shows the electrical structure of the proposed CHCTlSMU. 1And the data transmission system contains a memory block I a block 2 of distributed messages, a remote 3, a block 4 of information input-output, n channels 5, each of which consists of a block 6 of protection against errors, a signal of signal 7, a signalizer 8, sensor 9 marks Vre1 | YuSh1, unit 10 control and two input; ScN 1 and 12 direct and reverse communication channels, respectively. The system works as follows, 1%) And the availability of information (codograms in memory block 1, message distribution block 2 requests this codogram with the entered address. On the result of address analysis by decoder 3, message distribution block 2 records it in a buffer memory one of the blocks 6 from the errors assigned to the corresponding direct communication channel. The codogram from the buffer memory of block 6 is output via the input bus 11 to the direct communication channel. When properly received, the codogram from the opposite station is back Via channel 1.2, a receipt is issued to the channel, through which the duplicate is stored, stored in one of the zones in the buffer memory of block 6. If the code frame recorded in the buffer memory of block 6 at the opposite station is received correctly, and its output block I is prohibited due to the fact that its zones are busy, instead of a receipt for a repetition loop on the reverse channel from the form O {router 7, with an increase circuit of the reception noise protection, the combination Z is formed and h is multiplied loop repeating information). At the receiving station from block 6, after a waiting time for a receipt, a survey of the analyzer 8 is entered, and from its output a signal is sent to the block 10, which prohibits the transmission of the signal of the CBG not transmitted to block 2. At the same time, the analyzer 8 starts the sensor 9 time stamp irregular for the maximum time of block 1 zones. The signal from its output is fed to block 10, and block 1 then allows transmission through it to block 2 of the CDG signal, which in block 1 erases a duplicate of the transmitted pattern, 1. Since the zone occupancy time is variable, the signal from the output of the analyzer 8 is used in block 6 to count the beginning of the repeated search for the receipt and when it is (Cicking on a segment smaller than TC, 4S of the fourth output of block 6, block 10 allows the passage into block 2 CDG signals are not transmitted. If, however, Txx has not received a receipt (for example, if the quality of the communication channel is very poor or broken), the output signal from the sensor 9 of the time standard is used in block 6 to generate a CDG signal. which through block I act t in block 2, This signal organizes the output of the codogram with signs of unavailability to block 4. In the proposed system, when working in a communication network with different speed duplex channels, the codogram is output to a local device with a sign of unavailability only by The reason for the poor state of the communication channels. It should be noted that if there is effective dynamic monitoring of the quality of the communication channels and the use of bypass information transfer marfutes, the number of codograms with a no longer sign is minimized. loss of communication, which, ultimately, greatly increases the bandwidth of the communication network and reduces the time to deliver messages to recipients. When implementing these systems in order to reduce the number of codgrams outputted to information input and output unit 4 at transit stations, their zonality can be increased due to the overflow of the storage unit zones. However, to accommodate different information transfer rates over communication channels that vary widely , and the input (output) speeds of information to (from) local devices will require increasing them to a large number, which greatly complicates the group part of multichannel data transmission systems, while

the probability of overfilling the zones of the memory blocks remains. The proposed multi-channel data transmission system completely eliminates the output of codograms with a sign of unavailability due to the overflow of the memory block by the Optimal Choice.

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Claims (1)

additional equipment. Invention Formula A multichannel data transmission system containing a message distribution block that connects its inputs and outputs with inputs and outputs, a decoder, a memory block, an input / output information block, respectively, and the corresponding output of the message distribution block is connected to the first inputs n of the SSB protection blocks, distinguishing, so that, in order to increase the speed of data feeds, the signal conditioner is entered into each channel. It is a serially connected 1e analyzer, a time stamp sensor and a block control, the output of which is connected to the corresponding: all input of the distribution unit, and the analyzer output is connected to the second inputs of the zeatty unit from errors and the control unit, while the input of the imaging signal of the signal is connected to the first input of the block 11: with the first output of the block Ovibok protection, the second input of which is connected to the first output of the time stamp sensor, the second output of which is connected to the third input of the block is faulty, the third and the fourth outputs of which are respectively connected to the third input of the control unit and the input of the analyzer, the other input of which is connected to the fourth input of the protection block mistakes. Sources of information taken into account tfi expertise . Petrovich V.I. and others. The equipment of the rasshfeleleni messages center switching weather. Communications equipment. Ser.TPS, Issue 2 1976 (prototype)