SU760074A1 - Information exchange device - Google Patents

Description

The invention relates to the field of computing and can be used to control the transfer of information between elements of computer systems.

There are devices for data exchange- ₅ , containing a block for allocating allowed calls, a switch, a control unit, a priority block, an address shaper, first and second registers and allowing to exchange at any time only between two subscribers of the computing system? ready to exchange information, idle in the queue at this point in time [1].

The disadvantage of these devices is their low bandwidth.

The closest to the invention and ¹⁵ essentially technical solution is the device for communication, comprising two registers, the block allocation parallel gear unit for generating addresses of objects transmitters extracting unit 20 allowed calls whose inputs are the first group of device inputs, a switch, data inputs and tsykhody which is respectively the second

2

the group of inputs and the first group of outputs of the device, the control unit, the first output of which is connected to the control input of the priority block, a register, and the second output of the control unit is connected to the control input of the register whose output is connected to the control input of the switch and to the output of the device. This device communicates between groups of subscribers [2].

The disadvantage of this device is its density and large amount of equipment, causing low reliability of the device.

The purpose of the invention is to simplify the device.

This goal is achieved by the fact that in the device containing the block allocation of allowed calls, the inputs of which are the first group of inputs of the device, the switch, information inputs and outputs of which are respectively the second group of inputs and the first group of outputs of the device, the control unit, the first output of which is connected to the control the input of the priority block, register, and the second output of the control unit connect '3 _

Not with the control input of the register, the output of which is connected with the "control input of the switch and with the output of the device, the decryption block of the required connections and the encryption block of possible connections are entered. In this case, the group of query, address and indicative outputs of the allocation block • ·· - allowed calls are connected

correspondingly with the first, second and third groups of control inputs of the decryption block of the required connection, ”group — whose code outputs are associated with the corresponding input groups of the encryption block of possible connections and with the group of inputs of the priority block whose outputs are connected with the group of enabling inputs

...... block possible encryption of connections.

The third and fourth outputs of the control unit are connected to the control inputs of the decryption block of the required connections and the encryption block of possible connections, respectively, the outputs of which are connected to the digit inputs of the register and to the group of code inputs of the block for the allocation of allowed calls.

FIG. 1 is a block diagram of the device; in fig. 2 - functional diagrams of the decryption block of the required connections and encryption of possible connections, f

FIG. 1 denotes: block ί allocation of permitted calls, 'block 2 decryption of required connections, block 3 priority, block 4 controls, block 5 encryption of possible connections, register 6, switch 7, output 8 of the device, subscribers 9, including registers 10 of the subscriber request code, subscriber employment code registers 11, subscriber input registers 12 and subscriber output registers 13, the first group of device inputs 14, the second group of device inputs 15, the device output group 16, the group of request outputs 17, the group of outputs 18 and the group of indicative outputs 19 of block 1 , gr Upp code outputs 20 of block 5, groups of bit code outputs 21 of register 6, groups of code outputs 22 of block 2, groups of code inputs 23 of block 3, group of enabling outputs 24 of block 3. Blocks 2 and 5 respectively contain (Fig. 2) elements AND 25 and 26.

The device works as follows.

Block 1 receives applications from all subscribers 9, namely, register 10 receives the address of the subscriber to whom the subscriber wishes to apply for information transfer. Appeal of any subscriber 9 for the purpose of transmitting information is also recorded

..... in block 1. In addition, from the register 11 all

9 subscribers receive a sign of subscribers readiness to receive data. Thus, block 1 selects subscribers separately, ready. .... a _n, q _e r e _ach information (outputs 17, 18) and separate subscribers, ready to receive information (19 outputs).

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The information accumulated in block 1 (outputs 17, 18, 19 have a digit capacity equal to the number of subscribers) enters block 2 on. And 25 elements, on which the code is formed, corresponding to two groups of ₅ nents allocated for parallel data exchange between them: The total number of And 25 elements depends on the number of subscribers. The generated code for parallel data exchange enters block 5 and block 3.

Since several other subscribers can simultaneously access the same subscriber and block 2 allocates several pairs of subscribers with the same receiving subscriber, the data exchange pair codes come from I 25 to

¹⁵ block 3, which reserves the right to transfer information at the moment only for one of the competing subscribers. At the same time, block 3 imposes a ban on the transfer of information to subscribers with the lowest priority in the form of sending a zero in block 5 to groups of elements And 26, which correspond to subscribers-transmitters with the lowest priority.

Block 5 on the basis of the signals from block 2 and block 3, generates on code elements 26 a code of two groups of subscribers allocated for parallel exchange of data. The number of elements and 26 equals the number of elements x 25.

The code generated from block 5 enters the register 6, on the output of which buses are driven that correspond to the two groups of subscribers currently allocated for parallel data exchange. The signals from the output of the register 6 on the excited bus are fed to the control input of the switch 7 and ensure the corresponding switching of the inputs of the second group of inputs 15 connected to the output registers of 13 subscribers 9, and outputs of the group of outputs 16 connected to the input registers of 12 subscribers 9. At the same time the same signals 13 subscriber 9 subscribers, allocated for parallel transmission of information, arrive at the control inputs of the output registers as a response signal and give permission to change the information on these output registers 13.

In order to avoid re-organizing parallel data exchange, both groups of subscribers, exchanging data in the previous cycle of operation, are blocked by signals coming from And 26 elements. These signals are passed to the control input of the block for allocation of allowed calls at the outputs 20 corresponding to the selected pairs of subscribers .

Unit 4 forms the cycle of operation of the device, producing successively the control actions that arrive at block 2, block 3, block 5 and register 6.

five

6

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Thus, block 2 delivers' the selection of two groups of subscribers, between which currently requires the exchange of parallel data, and unit 5 generates the two code groups of subscribers, between which currently _{PA-5-parallel} data exchange in accordance with their priorities. The introduction of blocks 2 and 5 allows, without narrowing the functionality of the device, to provide a significant simplification of it.

Claims (1)

Claim A device for exchanging information containing a block for allocating allowed calls, whose inputs are the first group of device inputs, a switch, information inputs and outputs of which are respectively a second group of inputs and the first group of device outputs, a control unit whose first output is connected to a control input of a priority block register, the second output of the control unit is connected to the control input of the register, the output of which is connected to the control input of the switch and to the output of the device, different With a view to ⁵ simplify the device, the decryption block of the required connections and the encryption block of possible connections are entered into it, and the groups of request, address and indicative outputs of the block for the allocation of permitted calls are connected respectively to the first, second and third groups of control inputs of the decryption block of the required connections the corresponding groups of inputs of the encryption block of possible connections and with the group of inputs of the priority block whose outputs are connected to the group of allowing inputs of the block the encryption of possible connections, the third and fourth outputs of the control unit are connected to the control inputs of the decryption block of the required connections and the encryption block of possible connections, respectively, the outputs of which are connected to the digit inputs of the register and to the group of code inputs of the block for the allocation of allowed calls.