SU907845A2 - Discreate information receiving device - Google Patents

Description

(54) DEVICE TO RECEIVE DISCRETE

one

The invention relates to telecommunications.

According to the main author. St. No. 692406, a device for receiving discrete information is known, containing a analyzer and a decoder combined in input, the output of which is connected to the input of the information receiver through 5 connected in series storage and the first valve, to the control input of which, to the control input and to the error input - "Re-asking the second valve is connected respectively to the outputs Q of the analyzer, connected in series with the control unit and the additional accumulator, while the information input of the additional accumulator is connected to the output Ithel, and an output - to the input of the data receiver, outputs' error and "revised demand 1.5 analyzer via a control unit respectively connected to the control input of the additional accumulator and to a control input of the second valve 1..

However, in the known device lack of reliability.

The purpose of the invention is to increase credibility. INFORMATION

To achieve this goal, a third valve, a comparison unit and an error accumulator connected in series, an OR-NOT element, and an AND element whose output is connected to the auxiliary input of the control unit and the auxiliary inputs of the accumulator and the additional accumulator, are added to the known device for receiving discrete information. connected to the first input of the comparison unit, the second input and the output of which are connected respectively to the output of the third valve and the second input of the AND element, while the decoder output is Keys to the data input of the third valve, the control input of which is connected to an additional output of the control unit, and an input error accumulator is connected to the control input of the second valve and the second input of OR-NO element.

The drawing shows a structural electrical circuit of the proposed device.

The device contains a decoder 1, accumulator. 2, valve 3, receiver 4 information,

Claims (2)

analyzer 5, valve 6, additional accumulator 7, comparison unit 8, valve 9, control unit 10, error accumulator 11, OR-NOT element 12, AND 13 element. The device works as follows. The signal from the communication channel arrives at decoder 1, and analyzer 5. From the output of decoder 1, the information part of the code block in the original code is written to the drive. 2. If analyzer 5 did not detect an error in the first code block, output of information from accumulator 2 through valve 3 to information receiver 4 is allowed. Otherwise, the analyzer 5 generates an "error" signal which, through valve 9, issues an "request" and an input to the control unit 10. At the same time, the analyzer 5 supplies the control input of the valve 3 with a blocking signal. Passing information from storage device 2 to information receiver 4 is prohibited. The first code block is erased. The blocking signal also acts on subsequent code blocks. At the same time, those of them, in which no distortions were detected, are recorded by the signals from control unit 10 into an additional accumulator 7. Along with the reception and accumulation of the combinations following the distorted error, the order of the combination with the detected errors occurs in the error accumulator 11 who got into the blocking zone. In this case, the addresses of the 7 combinations recorded in the additional accumulator correspond to their sequence numbers. The signal "request from the communication channel receives a combination of the reshoot from a number of the last code blocks. When the "request" combination arrives, the analyzer 5 issues to the control unit 10 a signal about receiving the combination "request. The control unit 10 stops recording the information coming from the storage device 2. If the first code block is again received with an error during the first repetition, the process of re-asking is repeated before it is received without error. Simultaneously, the blocks that follow the first one without erasing the previously recorded information in this drive are written to the additional drive 7. When receiving, in the process of repeating the first code block without an error, the re-inquiry cycle ends. At the same time, the Signal from the control unit opens the valve 6 and all subsequent code blocks simultaneously with recording to the accumulator 2 are fed to one of the inputs of the comparison unit 8, to the other input of which from the additional accumulator 7 the corresponding combinations, written without error, are output. If the compared combinations match and there are no errors in them, the signal from analyzer 5 opens valve 6 and, at the command from control unit 10, the combination of accumulator 2 is read into information receiver 4. In the event that the subsequent (second) block is received with an error, and the corresponding block 7 stores the corresponding block without error recorded from the previous transmission, it is output to the information receiver 4 by a command from the control block 10. At the same time, the control unit 10 outputs a blocking signal to the control input of the valve 9, and the request signal is not issued. If the second code block is received without error, and it is absent in additional storage 7, the valve 9 is not blocked by the control unit 10, the code block written in storage 2 is outputted to the information receiver 4 via valve 3. In the event that no errors were found in the received code block and corresponding to it recorded in the additional drive 7, and if a bit comparison occurs a mismatch occurs, at the end of the comparison, the comparison unit 8 generates a signal to one of the inputs of the element And 13 which receives a signal, from the output of the element OR NOT 12. At the output of the element I 13, a signal appears that erases both blocks and acts on the control unit. The signal from the output of the element OR-NO 12 is a consequence of the absence of errors in the compared combinations, i.e. the combination received at the moment and in the corresponding combination issued from the additional accumulator 7. The result of the absence or presence of an error in the combinations recorded in the additional accumulator 7 is filled in the accumulator 11 errors, the number of registers corresponding to the number of blocked combinations. Thus, if иб is ка bk is detected only in one of the compared combinations, the result of the comparison is not taken into account, but a combination that is not distorted is output to the information receiver 4. And in the case of non-detection of errors in both compared combinations and their mismatch. both combinations are erased, and a command "request" is sent via valve 9 via a command 9 from the control unit 10, while receiving the second code block, the third and fourth code blocks are recorded in the additional drive 7 taking into account the change of address. The reception and processing of subsequent code blocks is performed similarly to the reception of the second code block. Thus, in the proposed device, the reliability of the reception of information is increased. The invention The device for receiving discrete information on the author. St. JVb 692106, characterized in that, in order to increase the reliability, a third valve, a comparison unit and serially connected error accumulator, an OR-NOT element and an AND element, whose output is connected to the auxiliary input of the control unit and the additional inputs of the accumulator and ancillary accumulator, an additional output of which is connected to the first input of the comparison unit, the second input and output of which are connected respectively to the output of the third valve and the second input of the AND element, while the decoder output is connected to the information ion entry third valve, a control input connected to an additional output of the control unit, and an input error accumulator is connected to the control input of the second valve and the second input of OR-NO element. Sources of information taken into account in the examination of 1 USSR Author's Certificate No. 692106, cl. H 04 L 17/16, H 04 L 1/16, 1977 (prototype).