SU1345205A1 - Information exchange device - Google Patents

Abstract

The invention relates to the field of computer technology and can be used in data transmission systems built on the principle of a common backbone. In this case, the priority of the served subscriber is determined by its priority code, the waiting time in the queue and the physical location in the system. The aim of the invention is to reduce hardware costs. The device contains an I / O channel start-up block 3 and interface units with subscribers 4, the I / O channel start block contains a load resistor 10, two elements 11 and 12, delay element 13, trigger 14. The interface block with subscribers contains two triggers 15 and 21, decoupling element 16, counter 17, variable priority node 18, element HJUi 19, element I 20, group of main elements I 22. 1. f-ly, 2 ill. with (L with 4 JV GS O SP fie

Description

The invention of the forward-to-peak technology, and the technology could be very useful, is called B data leverage systems built on the basis of a common policy, the priority of the served subscriber is determined by its priority code, time, en1: in line and physical allocated; -; eat in the system.

Pel of the invention is the reduction of investment costs.

IG.1 presents a block diagram of a device for exchanging informal, ia; figure 2 is a functional diagram of the node of the variable priority.

The device contains a common mag, channel 2 input-output unit

3-channel I / O, K blocks

4 contacts with subscribers 5, Transmission Line 1 contains an information group. x tires 6, resolution buses 7, priority 8, query 9,

Block 3 contains a load resistor 10, elements 11 and 12, the element: 13 delays, trigger 14. Block 4 contains a trigger 15, divisive signal 16, counter 17, variable priority node 18, element 1-1G1I19 , els: - ment And 20J trigger 21 j group of trunk elements 1-1 22. Uze. 18 right-priority priority contains a circuit: 2b comparison, each of which contains elements AND 24, element NOT 25, edemeJ-: T OR 26, element And 27. Elements AND 24 implement the functions of the wire element OR for signals of logical units. Counter 17 generates a sabotage code of priority, taking into account the priority code and the time spent in the queue of block 4.

The triggers 14, 15, 21 are in the initial state. When the need arises in the transmission of information and in the absence of a signal for the resolution of ga to bus 7, block 4 generates a sig; 1al request, which translates trip 15 into a single unit, Simultaneously E1s ps; the group of inputs of block 4 of the message. If you write the priority code of the message from the subscriber 5 to the counter: 7 blocks 4, then one of the inputs of the block, 4 signals are sent, the timer from the abs - - - - that increases the code by waiting queues for service. Signs 1L request with g: 1 trigger code 15 arrives on the first input, ;;; Element 11, which is triggered ,, The permission signal from its code post;

S

riat T MT iiei type 7 p u: e blocks A, np nhol T; pari. Tnirt u tlol 18.

Uz 18 variables about prior analysis analyze the results of the results of the total or .i; OJUbX CrC5 JArON I UZLOR 18

a few blocks of formal forms) haji psi ritet, which rjjieMGii- or 19 comes through: and the second entrance

element of the element I 12, on the first entrance 1 which: lolas-ts:. paapeineHUH on the element of element I 11, Trigger 14 transitions T in the single state of the element actuation of element 13

Element I delays 11 terminate the shape of the Vatr, the block enable signal, the inputs / outputs of which are disconnected from the iitHH 6 standard-1 line, releasing their transmission of information and stopping the process: 1 of the unit having max); -urint,

Three 1-er 21 switches to the single state g fixing the priority of the block h after the termination of the search process, the efficiency of the resolution signal on im 7 is determined by the hold time h; element 13 delay. In this case, the reliability of the operation of the device during the implementation of several

l5onen-ov with the maximum codes at - With rltet;: -:,

When translating trigger 14 into one-1 {unit state, single SI5 is set into channel I / O as a signal

Preparing to receive a message, Single signal from trigger code 21 prepare,: Inject 1t to trigger a group of And 22 to receive information and go to the subscriber as a signal

the beginning of the transfer of information. By the same SR.G1-ALS) m, the trigger 15 1-t counter is transferred to the initial state 17. When transmitting information from the subscriber, its number. :::: is transmitted in the address part

tell me. After the message has been received, channel 2 sends a signal to the trigger ;; a 14 ,. At the same time, conditions are created for generating a signal with an increase in resolution of a) block A-который which forms a signal

there is a request for at least a request from

one subscriber and the corresponding block;: olr ai: and 5 waiting in the queue, the resolution G1al transfers into the original :: state the trigger 21 of block 4, zac; n-1th of the 11th G1 information transfer process. The next process of searching for the 4th linking block with abenent, which has the highest priority, begins

134

Priority node 18 consists of several comparison circuits 23 in the number of bits of the priority code. In each circuit there are two outputs: informational, connected according to the INSTALLATION SHSH scheme with information outputs of similar cells of other nodes and controlling, allowing or prohibiting analysis of the priority code bits

blocks, starting with the older bit.

Let, for example, two blocks 4 have priority codes 11001 and 10111, Then a code is set on the bus group 6

11001. After comparing the higher bits - 15 tons. And the conjugation block group with the abodes containing units, at the second outputs of the comparison circuits 23, the resolution signals are generated, which allow analyzing the subsequent bits of the priority codes. After comparing the second bits at the second output of the comparison circuit of the block containing code 10111, a zero potential is formed, since from the output of the IBTI element 26 a cool potential is applied to the input of the AND 27 element (O from the second bit of the priority register and O from the output of the NOT 25 element ), Block 4 with code 10111 is excluded from further analysis and block 4 is determined with a maximum code of 11001.

If several blocks 4 have the same maximum code, then they create a control signal at the output of the OR 19 elements, which exists on the priority bus 8 connected to the input of the OR element 19 of the block located closer to channel 2 of the input-view switch. In this case, priority is given to the most remote unit 4, since in other blocks 4 having the same maximum code, the trigger 21 is not translated into the unit state with noMomji element AND 20, which is connected to priority bus 8 from the more remote units 4 by the first zero input mates with subscribers.

Claims (2)

Invention Formula 1 "A device for exchanging information containing an input channel start-up block and M interface blocks with a subscriber, each interface block with a subscriber containing the first trigger, a group of main AND elements and a developing element, and the I / O channel starting block. the first element And the load resistor. the first output terminal is connected to the zero potential bus of the device, and the second output is connected to the first input of the first element I and via the communication request bus to the first output of the connecting elements M of the interface blocks with the subscriber, each of which has the second output of the isolating element associated with the output of the first trigger, the first input of which is the input of the interface unit with the subscriber for connection to the output of the subscriber request and the first inputs of the trunk elements five 0 five 0 five 0 five A tape is a group of device inputs for connecting to a group of information output of a subscriber, outputs. The trunk elements AND group M of the interface units with the subscriber are interconnected by similar discharge buses and are a group of device buses for connecting to an information group of I / O channel buses, characterized in that, in order to reduce hardware costs, each interface unit with the subscriber entered the counter, variable priority node, the AND element, the OR element and the second trigger, and the delay element, the trigger and the second AND element are entered into the I / O start block, and the first I / O channel start block The second input of the second element I is connected to the output of the first element I, the second input of which is connected to the inverse output of the trigger, the output of the second element I through the delay element is connected to the first input of the trigger, the second input and the direct output of which are respectively the input and output of the device to the reset output and to the input of the I / O channel start, and the output of the first element I of the starting block of the input / output channel is connected via a resolution bus to the control input of the variable priority node, the first inverse input element This AND, the reset input of the second trigger of each interface unit with the subscriber and is the output of the device for connecting to the lock input of the corresponding subscriber, and in the iM interface module with the subscriber, the output of the second trigger is connected to the second inputs of the AND main trunk elements, the installation input of the first trigger , the installation input of the counter is the i-th output of the device. Connections for connecting to the subscriber's i-ro send input, information connected, 1st inputs and counting input counter of the i-ro interface to the subscriber block are respectively the i-th group of device inputs for connecting to the i-ro subscriber code output group; and the 1st input of the device for connecting the subscriber's i-ro to the sync output, and in each interface unit with the subscriber, the counter outputs are connected to information inputs of a variable priority node, the output of which is gated is connected to the first input of the ICH element and the direct input the element And, the output of which is connected to the installation input of the second trigger, the information inputs-outputs of the nodes of variable priority M of the interface blocks with the subscriber are connected to each other through the corresponding information buses and are connected to the same moves of the main elements AND groups of interface units with the subscriber, the output of the OR element (1-1) of the interface unit with the subscriber is connected via a priority bus to the second inverse input of the AND element and the second input of the OR element of the i-ro interface unit with the subscriber, and the output of the element OR junior in the positional priority of the interface unit with the subscriber is connected via a priority bus to the second input vts5 The horn of the element H of the block to start the input-output channel, 2. The device in accordance with claim 1, 1, 1 and 2, and so on, that the variable priority node contains a group of comparison circuits by the number of bits of the generated priority code, each comparison circuit contains two element AND, element NOT and element RITHj and in each comparison circuit the output of the first element AND is connected through the element NOT to the first input of the element OR, the output of which is connected to the first the input of the second element; And the second input of which is connected to the first input of the first element I, and the first input of the first senior comparison circuit is connected to the control input of the variable priority node, the subsequent first inputs of the comparison circuit are connected to the outputs of the second elements And the previous comparison circuits, the output of the second element And the last (youngest) circuit the comparison is the output of the gating of the variable priority node, the information inputs of which are connected to the corresponding second WMO The first elements of the AND of the circuits compared to the 5 info. The decorative inputs and the codes of the variable priority node are connected with the corresponding input of the NOT elements and the conclusions of the first elements AND the comparison circuits. 25 ten ъ 27 Editor I. Casard Compiled by L. Sternin Tehred L. Serdyukov Corrector I. Muska Order 4922/48 Circulation 670 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., d, 4/5 Production and printing company, Uzhgorod, st. Project, 4 srig.2