SU851389A2 - Interfacing device - Google Patents

Description

(54) PAIRING DEVICE

The interface device relates to computing technology, in particular, to devices for coupling various information sources and receivers with the possibility of priority connection of healthy channels in data exchange systems. According to the main author. St. 656049 a device is known that contains a channel switch / group of inputs of which is connected to a group of inputs of the device, an input with an output of a request code decoder, a second input and an output of which are connected respectively to the second input of the device and the first input of the comparison circuit, the second connected to the output address decoder, and the output with zero input of the first trigger, whose single input through the driver is connected to the output of the element NOT and the first input of the address decoder, the inverse output to the first inputs of the first the fourth And elements, and the direct output to the first inputs of the second and third And elements, the second inputs of the channels connected respectively to the first and second outputs of the coclutator, the second input of the first element And connected to the first input of the device, and the output to the first input of the first element OR , the second input of the second element I connected to the output, and the output with the input of the element NOT and the first input of the shift register, the second input of which is connected to the output of the third element I, and the first and second outputs respectively with the second inputs the decoder, the address and the fourth AND element, the output of which is the first output of the device AND The disadvantage of the device lies in its low reliability due to the impossibility of monitoring the operability of the interface device itself, the information sensor, and the impossibility of rebuilding the device to a backup healthy channel. The purpose of the invention is to increase the reliability of the device and improve performance by ensuring control of the operability of the device itself and the sensor information with the ability to switch to backup channels. The goal is achieved by the fact that in the interface device by author. St. W 656049 introduced the second and third trnggeu l, the second element OR, fifth.

common and seventh elements AND, the first and second inputs of the second element OR are connected respectively to the outputs of the third and fourth elements AND, and the output to the first input of the second trigger, the second input of the request code connected to the output of the decoder, and the output to the first input of the fifth element And, the second input of the element connected to the output is NOT, and the output is to the first input of the third trigger, the second input of which is connected to the output of the request code decoder, and the output to the first inputs of the sixth and seventh And elements, the second inputs of which dineny respectively to direct and inverted outputs of the first flip-flop, and the outputs - respectively the second and third inputs.

The drawing shows a block diagram of the device.

The interface device contains triggers 1-3, the elements OR 4 and 5, the elements AND 6-12, the shift register 13, the element NOT 14, the address decoder 15, the compiler 16, the comparison circuit 17, the request code decoder 18, the switch 19 channels. The device also contains outputs 20 and 21 of the channel switch; the outputs of 22 sensors (a group of device inputs), the outputs 23 and 24 of the receiver (the second and first inputs of the device), the outputs of the device 25, 26 and 27 (information and control inputs of the receiver).

The device works as follows.

The decoder 18, using the request code from output 23 of the receiver, selects a specific channel, at the same time generating the adrection code for the required information in the comparison circuit 17 and wraps the triggers 2 and 3 and prepares them for operation.

In the initial state, the trigger 1 is in state 1. In this case, the signals of the information output 21 of the switch 19 through the open element And 8 arrive at the information input of the shift register 13 and through the element OR 5 at the counting input of the trigger 2.

Simultaneously with the information, the clock pulses of the switch 19 from its output 20 through the elements AND 7 and OR 4 arrive at the clock input of the shift register 13 and the element NOT 14, which organizes the signal to stop recording information in the shift register 13, entering the driver 16, the decoder 15 as the decryption resolution signal, and the input element AND 10 as the resolution of the census of the state of flip-flop 2 to flip-flop 3, whose single output through the open element 11 is connected to the input 26 of the receiver. The output signal from element 11 is a control for the receiver, indicating that the connected channel of the sensor is working properly.

Shaper 16 maintains single trigger state 1 in write mode. If the address of the received information does not coincide with the required request code, then the comparison circuit 17 does not work, and the following information enters the shift register 13.

When the addresses from the decoder 15 and the decoder 1 match, the matching circuit 17 generates a pulse of setting trigger 1 to the state Oy, thereby preventing the clock and information signals of the switch 19 from entering the shift register 13 and sending the unit level signal to the elements 8, 9, 12 which permits the passage of clock pulses from the output of receiver 24 through elements AND 8 OR 4 to the shift register 13 and information recorded therein through element 9 to output 25 of the interface device (receiver input).

From the output of the AND 9 element, the information through the OR element 5 enters the first counting input of the trigger 2, and its state after the output of the information recorded in the shift register 13 is passed through the AND element 10 to the input of the trigger 3. The signal from the single output of the trigger 3 through Element 12 is fed to receiver input 27, evidence of the health of the entire interface.

The output termination signal to the receiver of the information recorded in the shift register 13 from the element NOT 14 enters the driver 16 and sets the trigger 1 to one state, preparing the entire interface to record the new information.

Since the transmission of information occurs independently of the reception, the frequency of the clock pulses of the sensor and the receiver may be different.

The mode of operation of the switch 19 channels is determined by the algorithm of the receiver, taking into account the presence of signals that the sensor channel and the interface device itself are in good condition.

Thus, the proposed device connects the receiver to the backup channel in case of an information sensor channel failure, as well as constant monitoring of the device parity of the input and output information, which significantly increases the reliability of information transmission, improves the operational characteristics of the equipment.

invention formula

Device pairing auth. St. 656049, different

so that / in order to improve reliability / the second and third triggers are entered into it, the second element OR / fifth, the sixth and seventh elements AND / and the first and second inputs of the second element OR are connected respectively to the outputs of the third and fourth elements AND, and the output - to the first input of the second trigger, the second input cm connected to the output of the decoder of the request code, and the output to the first input of the fifth element I / second input connected to the output of the element NOT / and output to the first input of the third

the trigger / second input of which is connected to the output of the decoder of the request code, the output to the first inputs of the sixth and seventh And elements, the second inputs of which are connected respectively to the direct and inverse outputs of the first trigger / and outputs to the second and third inputs of the device, respectively.

Sources of information / taken into account in the examination

0

1. USSR author's certificate 656049, cl. & 06 R-3/04, 1977 (prototype). ,

Claims (1)

Claim Interface device St. No. 656049, characterized in that, in order to increase reliability, the second and third triggers, the second OR element, the fifth, sixth and seventh AND elements are introduced into it, and the first and second inputs of the second OR element are connected respectively to the outputs of the third and fourth AND elements and the output goes to the first input of the second trigger, the second input of the request code decoder connected to the output, and the output to the first input of the fifth AND element, the second input connected to the output of the NOT element, and the output to the first input of the third trigger, the second input of which • connected to the output of the request code decoder, the output 'to the first inputs of the sixth and seventh AND elements, the second inputs of which are connected respectively to the direct and inverse outputs of the first trigger, and the outputs are respectively to the second and third inputs of the device.