SU1589275A1 - Variable priority device - Google Patents

Abstract

A variable priority device containing the first and second groups of elements AND, a group of triggers, an element OR, a group of prohibition elements whose information inputs are connected to the inputs of applications of the device, the first inputs of elements AND of the first group are connected to the outputs of the corresponding elements AND of the second group, the second inputs of elements AND the first group is combined and connected to the polling input of the device, the outputs of the elements And the first group are connected to the zero inputs of the corresponding group triggers, the unit output of the I-th (I = 1, ..., N, N is the number of requests) group trigger is connected to the first input of the I-th element of the second group, the second and subsequent inputs of the J-th element of the second group (J = 2, ..., N) are connected to the inverse outputs from the first through (J-1) -th group triggers, and the second input of the first element And the second group is connected to the device expansion input, the control inputs of the group inhibit elements are connected to the output of the OR element, characterized in that, in order to increase the reliability of the device, a group of multiplexers, a group of registers, a group of blocks of elements And, decoder, haircut The input of each register of the group is connected to the input of the entry of device codes, the output of each register of the group is connected to the first input of the same name block of elements AND of the group and to the control input of the corresponding multiplexer, the group whose information input is connected to the output of the corresponding forbidding element of the group, the inputs of the OR element are connected to the unit outputs of the group triggers, the outputs of the group multiplexers are connected to the unit inputs of the corresponding group triggers, the outputs of the elements of the second group are connected to the second

Description

one

(21) 3981506 / 24-24

(22) 25.11i85

(46) 08/30/90. Bul № 32 (72) A.D. Dubovs, I.V. Tkachev, A.V. Korolev, A.A.Belousov and Yu.A.Golik (53) 681.325 (088.8) (56) USSR Author's Certificate No. 564636, cl. G 06 F 9/36, 1977.

USSR Author's Certificate No. 962946, cl. G 06 F 9/46, 1982.

USSR author's certificate number 1034038, cl. G 06 F 9/46, 1983.

(54) (57) DEVICE OF VARIABLE PRIORITY, containing the first and second groups of elements AND, a group of triggers, an element OR, a group of prohibition elements, informational inputs of which are connected to the inputs of the device orders, the first inputs of the elements AND of the first group are connected to the outputs of the corresponding elements And the second group, the second inputs of the elements And the first group are combined and connected to the polling input of the device, the outputs of the elements of the first group are connected to the zero inputs of the corresponding group triggers, the single output i-ro (,,. O, n, n is the number after Pros) the trigger group is connected to the first input of the i-ro element And the second group, the second and subsequent inputs of the j-ro element And the second

the groups (, „„. p are connected to the inverse outputs from the first to (-1) -th group triggers, and the second input of the first element AND the second group is connected to the device expansion input, the control inputs of the group inhibiting elements are connected to the output of the OR element, different so that, in order to increase the reliability of the device, a group of multiplexers, a group of registers, a group of blocks of elements I, a decoder are entered into it, the input of each register of the group is connected to the input of writing device codes, the output of each register of the group is connected to ne With the same input of the same block of AND group elements and with the control input of the corresponding multiplexer, the group whose information input is connected to the output of the corresponding element, the group is banned, the inputs of the OR element are connected to the single outputs of the group triggers, the outputs of the group multiplexers are connected to the single inputs of the corresponding group triggers , the outputs of the elements of the second group are connected to the second input of the corresponding block of elements AND groups, the outputs of which are connected to the inputs of the decoder, the outputs of the cat cerned are a group of outputs of the device.

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The invention relates to computing and can be used in centralized monitoring and control systems.

The purpose of the invention is to increase the reliability of the device.

The drawing shows a block diagram of the device.

The device contains a group of registers 3, -, a group of prohibition elements, a group of multiplexers 3 -3, the first group of elements AND-4, a group of triggers 5, -5, the second group of elements. And, a group of blocks of elements And l lftm a decoder 8, an element OR 9, a group of outputs 0 of the device, an input 11 interrogating the device, an input 12 recording the codes of subscribers of the device, an input 13 of the expansion of the device, and a group of inputs for -;

: The register block 1 is designed to: record before starting the operation of the device Ia subscriber numbers in binary code, the record is made in the order of decreasing priorities of customers, the number of registers in the register block, is determined by the number of subscribers connected to the device.

At the input 12 of the subscriber codes record, the subscriber codes are recorded in the register block in the order of loss: subscriber priority,

During the operation of the device, when the priorities of the subscribers change, the codes of the subscribers are rewritten in accordance with the new priorities of the subscribers. For a group of inputs 14, applications are received from subscribers for service,

The group of multiplexers 3 is designed to pass the request to the single inputs of the flip-flops. Group of flip-flops 5

The device works as follows

I

Before the device starts operation, the subscriber codes are recorded in subscriber priority registers in the subscriber group registers 1 register 12. In the first register li, the number of the subscriber with the highest priority at that time interval is recorded in the binary code in the last register 1 - number of the subscriber with the lowest priority. The triggers of the trigger group 5 are in the zero state, the zero potentials from the direct outputs of the trigger groups of the trigger i5 5 affect the corresponding inputs of the element OR 9, the inverse inputs of the inhibit elements of the group of the restriction elements 2 are open with a low potential from the output of the element OR 9,

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five

The device is ready to receive a service charge.

Suppose that a group of inputs 14 of the device’s application received applications from the first, sixth, and fifth subscribers. We assume that the number of subscribers connected to the device is 10, Let the sixth subscriber’s priority be 1 in this time interval, 4 be the first and 5th ten, that is, the sixth subscriber will give the highest priority. The number of the sixth subscriber in binary code is recorded in the first register of the register block, the first subscriber in the register C, and the ten subscriber in register 1,

Received applications pass through the open first, sixth and ten elements of the prohibition of the termination of elements of the prohibition 2 and arrive at the corresponding information inputs of all multiplexers of the group of multiplexers 3, the application of the sixth subscriber passes to the output of the multiplexer 3, since the address of the address multiplexers inputs of the multiplexer, which is supplied from the outputs of the bits of the first register register block to the address inputs of the multiplexer 3..

Similarly, the call from the first subscriber goes to the output of the multiplexer Zf, and the application from the tenth subscriber goes to the output of the multiplexer Zg, Unit potentials from the outputs of the multiplexers 3, 3 are set to one state of the triggers 5 ,, 5 and 5 j. In this case, a single potential from the output of the element OR 9 closes all elements 2 of the prohibition for further receipt of the application from subscribers. The trigger 5 inverse output blocks all subsequent elements And 6 corresponding to the one with a lower priority. A single potential from the output of the trigger, 5 passes through the element I 6 to the control input of the block of elements I 7. ,, -, At the first inputs of the block of elements I 1-7, 1 1M

The signals from the outputs of register bits 1 are valid. The output of the block of elements 7, -7 j is the subscriber number in the binary code, the application from which is served. This code is applied to the corresponding inputs of the decoder 8, at the outputs of which the destination subscriber appears, the application for which is served. At the appropriate output

a group of outputs 10 of the device is sent a request to the sixth subscriber. When a response from the sixth subscriber is received by a pulse at the input 11 of the polling of the device 5 outputs of the device 10 to the first subscriber with the corresponding bits of register 1 of the register block 1. At the corresponding output, the group trigger 5 through the AND 4 element is reset to the zero state. Single potential with inverted trigger output 5 opens the second inputs

element And 6, 6, etc. The application from the first subscriber from the direct output of the trigger 5 passes through the AND 6 element to the control input of the AND 74, 7 block of cells. Their first inputs are sent to the pent. After receiving a response from the subscriber by the pulse at input 11 through element I 4, trigger 5 is reset to O. The high potential from the inverse output of trigger 5 opens the fifth inputs of the elements AND fij-t 6 | ft N, etc.

Further work is similar.

Editor A. Ogar

Techred. Serdyukova

Order 2541 Circulation 573 Subscription

VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR

113035, Moscow, Zh-35, Raushsk nab. 4/5

Production and publishing plant Patent, Uzhgorod, st. Gagarin, 101

py outputs 10 devices first abo

Dineny with the corresponding bits of register 1 register block 1. A request is sent to the first subscriber on the corresponding output of the group of device outputs 10. After receiving a response from the subscriber by a pulse at input 11 through element I 4, trigger 5 is reset to O. A high potential from the inverse output of trigger 5 opens the fifth inputs of the elements AND fij-t 6 | ft N, etc.

Further work is similar.

Proofer t.Malets

Claims (1)

A VARIABLE PRIORITY DEVICE containing the first and second groups of AND elements, a group of triggers ,. OR element, a group of prohibition elements, the information inputs of which are connected to the inputs of the device claims, the first inputs of the elements AND of the first group are connected to the outputs of the corresponding elements AND of the second group, the second inputs of the elements AND of the first group are combined and connected to the polling input of the device, the outputs of the elements of the First group are connected with zero inputs of the corresponding group triggers, a single i-ro output (1 = 1 ,, .., η, η is the number of requests) of a group trigger is connected to the first i-ro input of the And element of the second group, the second and subsequent j-ro inputs the And elements of the second group (j = 2, ..,; n) are connected to the inverse outputs from the first to (jl) -ft triggers of the group, and the second input of the first And element of the second group is connected to the expansion input of the device, the control inputs of the group inhibit elements are connected to the output of the OR element, characterized in that, in order to increase the reliability of the device, a group of multiplexers, a group of registers, a group of blocks of AND elements, a decoder are introduced into it, and the input of each register of the group is connected to the input of the recording of device codes, the output of each group register connected to the first input _to the AND unit .odnoimennogo trup- JS nN and a control input sootvetst-. Vukmets multiplexer, group, the information input of which is connected to the output of the corresponding element of the ban group, the inputs of the OR element are connected to the unit outputs of the triggers of the group, the outputs of the multiplexers of the group are connected to the unit inputs of the corresponding triggers of the group, the outputs of the> elements of the second group are connected to the second input of the corresponding block elements And groups, the outputs of which are connected to the inputs of the decoder, the outputs of which are a group of outputs of the device. SU „1589275