SU646458A1 - Information transmitter - Google Patents

Description

(54) DEVICE FOR TRANSFER OF INFORMATION

The invention relates to radio engineering and can be used in redundant digital computing systems for transmitting information from a multichannel transmitter to a single channel receiver. A device for transmitting information is known, comprising a transmitting unit whose outputs are connected to the first inputs of a switch, the output of which is connected to the input of a block of buffer memory and through an adder to the input of a control unit, one output of which is connected to the first input of a receiving unit, the second input of which is connected with the output of the buffer memory block i, However, this device requires sampling circuits, which imposes strict requirements on the synchronous operation of the redundant channels of the transmitting device. The search for a serviceable channel of a device for transmitting information is conducted with the help of special equipment with additional time costs. The purpose of the invention is to simplify the device. For this, a device for transmitting information containing a block, the outputs of which are connected to the first inputs of the switch, the output of which is connected to the input of the buffer memory block and through an adder - to the input of the control unit, one output of which is connected to the first input of the receiving block, the second the input of which is connected to the output of the buffer memory block, the counter and the decoder are entered, and the other output of the control block is connected through the counter to the input of the decoder, which is connected to the second inputs of the switch. The drawing shows a block diagram of the proposed device. The device for transmitting information contains a transmitting unit 1, a switch 2, a block 3 of the buffer memory, an adder 4, a control unit 5, a receiving unit 6, a counter 7, a decoder 8 and output buses 9, and 10 a control unit. The device works as follows. The issuance of information from the transmitting unit 1 occurs cyclically by arrays of words. At the same time last

The array is a checksum presented in inverse form.

In the transmission cycle of information from the transmitting unit 1, the channel for the channels enters the inputs of the information receiving switch 2. Information is received from transmitting unit 1 only from one channel, the number of which is determined by the state of the counter 7 of communication failures with transmitting unit 1:

0.,. 00 - 1 channel

0.0.01- P channel

0 ... 10 - W channel and.

Counter width 7 is determined by the formula

tgl / t,

where tp is the number of bits of the counter 7,

And - the number of channels of the redundant transmitting unit 1 ,,

The outputs of the decoder 8 connected to the counter 7 control the circuits AND of the switch 2.

In the transmission cycle, information from one of the channels of the transmitting device 1 through the switch 2 is fed to the registers of the buffer storage unit 3 where it is stored until the generation of the checksum comparison signal. Parallel. The information goes to the checksum 4. At the end of the admission, it receives a controlled amount in inverse form. Information reception control unit 5 verifies the presence of all units. In case of correct reception from control unit 5, the bus 9 sends the receiving device a signal to compare the checksum of the received information. According to this signal, the received information from the block 3 of the buffer memory enters the processing of the circuit when I

J nono

p-nanv

L

In case of an incorrect reception from the control unit 5, the bus 10 sends the counter input of the checksum of the received information to the counting input of the counter 7. In this case, counter 7 changes its

 produced by

condition on

switching reception of information from the adjacent channel of the transmitting unit 1 (circular switching channels). If the information from the last (N-th) channel of the transmitting unit 1 is received incorrectly, counter 7 is zeroed, i.e. switching reception of information from the first channel of the transmitting unit 1.

Incorrectly received information is not used (nullified).

Claims (1)

Invention Formula A device for transmitting information containing a transmitting unit, the outputs of which are connected to the first inputs of a switch. The output of which is connected to the input of a block of buffer memory and through an adder to the input of a control unit, one output of which is connected to the first input of the receiving unit, the second input of which connected to the output of the buffer memory block, characterized by teM, that, in order to simplify the device by eliminating the sampling blocks, a counter and a decoder are entered, and another output of the control unit is connected to the decoder input through the counter Which odes are connected to the second inputs of the switch. Sources of information taken into account in the examination 1, Domanitsky S.M. Build robust logic devices. M., Energie, 1971, p. 104-107.