SU822167A2 - Device for interfacing information sensor with computer channel - Google Patents

Description

(54) INFORMATION SENSOR FUNCTION DEVICE WITH THE CHANNEL OF THE CALCULATION COMPUTER MACHINE and the fifth input of the termination unit | operation, and the output with the input channel BM fl. A disadvantage of this device is the low reliability of the data transmitted to the channel. The purpose of the invention is to increase the reliability of the data transmitted to the channels. The goal is to achieve that a data control block is inserted into the device, including the decoder element AND and two OR elements, the second output of the subchannel number generation unit through the decoder connected to the first input of the first OR element, the outputs connected to the fourth input of the error block, and the second input to the output of the AND element, the inputs of which are connected respectively to the second output of the query generation unit and the output of the second OR element, whose inputs are connected to the output group of the PCU and format converters. The drawing shows the device block. The device contains an information sensor 1, a computational machine channel 2, a start block 3, a work completion block 4, a synchronization block 5, a readiness control block b, a request generation block 7, a format conversion receiving block 8, a fault block 9, a pointer polling block 10 , block 11, the formation of the Subchannel number and the data control block, including the decoder 12, the first 13 and the second 14 OR elements and the AND 15 element. The device operates as follows. o Before launching the device, channel 2 queries in block 10 pointers; readiness, idleness and failures, the levels of which are formed respectively in blocks 3, b and 9; The result of the survey is transmitted from block 10 to channel 2 for interpretation. In the case of readiness and idleness, channel 2, using block 3, triggers sensor 1 to transmit data and synchronization signals. From sensor 1 to block 8, multiplexed multi-file data stream codes begin to arrive, and to block 5 - accompanying address information about the accessory: code to current or another subchannel (file). To block 5, channel 2 also receives a series of clock generator to synchronize the output signals in blocks 8, 11 and 4. As a result, block 8 starts block 8 to arrange for receiving the code coming from sensor 1, a layout is made in a unified format (character or byte), as well as in the non-transmitted information in block 8, the arrangement of the next character code is arranged. At the same time, the zatzor signal and the code of the channel number are not removed until the full transmission of the code of sensor 1 in unified portions of symbols. After that, a signal for. of the transfer order from block 8, the request of block 7 is removed along with the code number of the subchannel of block 11. When the next code is received from sensor 1, the described process is repeated. The completion of the reception of information from each subchannel is standardly controlled by control words, the number of which corresponds to the number of files of the multiplexed multi-file data stream. Thus, the set of control layers organizes and provides automatic demultiplexing during the input process. In addition, each control word sorts out the codes of its file from the multiplexed data stream. la The control of the selection of the corresponding language words is determined by block 11 by the address information of sensor 1 transmitted through block 5. As soon as the control word determines the completion of formation of the FACT from channel 2, block 4 receives a signal of a local end of the subchannel operation. If at the input of block 4 there is a code of one of the subchannels of sensor 1 coming through block 5 in the form of counting pulses, these signals are counted and after the formation of the last file from the output of block 4 is completed. In channel 2, the signal to stop the device. The same signal is. steps into block 3, which disables sensor 1 and thereby the device stops working. If in the process of receiving codes from sensor 1 to block 8 or from block B to channel 2, an error is received in data transmission and reception (for example, odd-numbered control widely used in computer science), then, respectively, from block 8 or Lanal 2 to block 9 signal arrives. in failure, which organizes the termination of the device and sets in block 9 the appropriate pointer for subsequent interpretation by channel 2. However, the reliability of the data transmitted by channel 2 data is not yet guaranteed by the correct operation of the control and encryption schemes of the control bit, but also depends on the reliability the process of fopa data generation in block 8 with the participation of other blocks and communications and on the reliability of the process of forming the addresses of the transfer of the generated data provided

block 11 with the participation of other blocks and communications.

The control of the data generation process in block 8 is provided by the OR 14 and I 15 elements. This control is based on the formation of the control combination in the redundant non-information binary bits of the last character of each assembled multi-character representation of the sensor code 1. The inputs of the register element 14 are entered. the symbol of block 8 in such a way that, at the output of this element, a low level is formed only if there is a jB register of the control combination symbol. Therefore, the appearance of a high level at the output of the OR 14 element and a high level at the second output of block 7 at which it appears immediately after the request is removed (i.e. after the last character of each sensor code) is interpreted by the fault block 9 as a data breach transmitted to channel 2, the device stops working and channel 2 receives a signal that the device has failed.

The control of the accuracy of the formation of addresses is transmitted by the decoder 12 and the element OR 13. This control is based on the decryption of addresses that go beyond the acceptable limits during the recalculation process, the high levels of which through the element OR 13 control the unit 9 failures, which stop the operation of the device and informs about channel 2.

Thus, the device provides the ability to perform

 real time operational automatic control of the reliability of data generation processes and their transfer addresses and thereby significantly reduce the likelihood of the formation and transmission of unreliable data to the channel due to the effect of:

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Claims (1)

1. USSR author's certificate No. 525940, class G 06 F, 3/04, 1972 (prototype).