SU903882A2 - Device for joining requests from communication channels - Google Patents

Description

(54) DEVICE FOR ASSOCIATING REQUESTS. FROM COMMUNICATION CHANNELS

The invention relates to computing technology and can be used to interface computers with communication channels. Known by the main author. St. No. 716039 device for combining requests from communication channels containing pause latching nodes, an OR element and control trigger 13. The disadvantage of the device is narrow scope. The aim of the invention is to expand the field of application of the device. The goal is achieved by adding an additional OR element to the device and a forced circulation formation node that contains a trigger, an AND element, a pulse generator, a counter and a decoder, and the device ready inputs are connected to the corresponding inputs of an additional OR element whose output is a single trigger input, the zero input of which is connected to the output of the device, the trigger output is connected to the first input of the element I, the second input of which is connected to the output of the generator and The pulses, the output element And is connected to the counting input of the counter, the reset input of which is connected to the zero input of the trigger, the output group of the counter is connected to the decoder group, the output of which is connected to the additional input of the main element OR. The drawing shows a diagram of the device. The device contains the device ready inputs 1, the message start inputs 2, the device setup input 3, the device priority output 4, the device output 5, the access end input 6, the pause latching nodes 7, the main element OR 8, the control trigger 9 , node 10 forming a forced reversal, trigger 11, pulse generator 12, element AND 13, counter 14, decoder 15, additional element OR 16.

A device for combining requests from communication channels works as follows.

When information is received on the input channels of communication, the first readiness signal of any of the channels is through element OR 16 and trigger II, the forced-circulation-forming unit 10 is triggered. If there are no interruptions in the transmission of information, the requests of the communication channels are received at the inputs. The corresponding node 7, at the request request, outputs the 4th signal. At the same time on the corresponding input 2 there is a message start signal. These signals, through element 20 OR 8, trigger trigger 9, generating a signal at output 5, which sets node 10 to its initial state.

If, after the start of node 10, a break in the transmission of messages occurs, then node 10, after a predetermined period of time has elapsed, from the decoder 15 generates a reversal signal arriving through the hardening element 8 and trigger 9 on output 5. It also sets node 10 to the original condition.

In the following, the device operation cycles are repeated.

Node 10 works as follows.

Requests of communication channels, having passed the element OR 16, launch the node U, transferring trigger 11 to one state - Kie. A trigger 11 opens element I 13 through a single output. Through element I 13, the signals from the output of the generator 12 pulses, which follow with a period TO, go to counter 14. The number n of the bits of counter 14 is selected from the ratio

  1 ° 9L- 1

where the value of the maximum possible pause in the transfer of messages.

After the counter 14 counts the number of pulses equal to 1 from the generator 12, a single signal is generated at the output of the decoder 15, which is fed to the output of node 10 and, through the OR 8 element, sets trigger 9 to one, generating a return signal. The signal from output 5 is fed to the zero input of the trigger 11 and the reset input of the counter 14. Subsequently, the operation cycles of the device are repeated.

The application of the invention allows to expand the field of application of the device due to the possibility of its operation with uneven loading of communication channels.

invention formula

Device for combining requests from communication channels by aut. St. No. 716039, characterized in that, in order to expand the field of application of the device, it contains an additional OR element and a forced circulation formation node that contains a trigger, an AND element, a pulse generator, a counter and a decoder, the readiness inputs of the device being connected to the corresponding inputs of an additional element OR, the output of which is connected to the trigger input, the trigger output is connected to the first input of the AND element, the second input of which is connected to the output of the pulse generator, the output of the AND element is connected to even input of the counter, the reset input of which is connected to the zero input of the trigger, the group of outputs of the counter is connected to the group; inputs of a power box, the output of which is connected to the additional input of the bases of the element OR.

Sources of information taken into account in the examination

1. USSR author's certificate No. 716039, cl. G 06 F 9/46, 1970

(g {rOTG; Kp).

Claims (1)

Claim A device for combining requests from communication channels by ed. St. No. 716039, characterized in that, in order to expand the area of application ^2S of the device, it contains an additional OR element and a forced circulation forming unit, which contains a trigger, an element And, a pulse generator, a counter ³⁰ and a decoder, and the readiness inputs of the device are connected to the corresponding inputs an additional OR element, the output of which is connected to the trigger input, the output of the trigger 35 ger is connected to the first input of the And element, the second input of which is connected to the output of the pulse generator, the output of the And element is connected to even counter input, input 40, the reset of which is connected to the zero input of the trigger, the group of outputs of the counter is connected to the group of inputs of the decoder, the output of which is connected to the additional input of the main OR element.