SU1580585A1 - Device for conversion of binary-decimal code to linear code of subscriberъs number - Google Patents

Abstract

The invention relates to communication technology and can be used to automatically dial a PBX subscriber or other automatic switching device. The purpose of the invention is to improve the accuracy of the conversion. The device contains a keyboard 1, the first 2 and second 8 counters, the first 3 and second 9 blocks of permanent memory, the comparison block 4, the pulse generator 5, the element OR 6 and the element OR NOT 7. The presence of the first 3 and second 9 blocks of constant the memory provides direct control of the pulse and talk key of the normalizer in the pulse operation of the pulse generator 5. 1 Il.

Description

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The invention relates to a technician and can be used to automatically dial the number of an ATC subscriber or other automatic switching device.

The aim of the invention is to improve the accuracy of the conversion.

The drawing shows a block diagram of the device

A device for converting a binary-decimal code to a linear code of a subscriber number comprises a keyboard 1, a first counter 2, a first permanent memory block 3, a comparison block 4, a pulse generator 5, an element OR 6 an OR-NOT element 7, a second counter 8 , second block 9 of permanent memory.

The operation of the device is as follows.

The subscriber's address is set on the first block 3 by pressing the key of keyboard 1, corresponding to the conditional number of the called subscriber.

Automatic dialing is done by pressing the control button on the keyboard 1. In this case, the corresponding start signal received at the installation input wraps the contents of the first counter 2, the outputs of which, connected to the address inputs of the first permanent memory unit 3, set the address of the first digit of the subscriber number which number comes from the outputs of the keyboard 1. With the help of the additional bit of the first counter 2, the logical O is set

The start-up signal, opens the element OR-NOT 7, and the clock pulses of the generator 5 pulses with a repetition frequency of 10 Hz arrive at the counting input of the second counter 8 and at the first address input of the second permanent memory unit 9. The remaining address inputs of the second block 9 receive address bits from the outputs of the second slider 8. The binary-decimal code of the subscriber number digits from the outputs of the first block 3 goes to the first inputs of the 4 comparison block, to the second inputs of which the signals from the outputs of the second block 9 arrive. There is a one-by-one comparison of information on each tact of address search.

Under the action of a clock pulse of 10 Hz, a linear sequence of dial pulses for the pulse and

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shunt contacts, with the me / serial interval first being formed, then the linear code pulses until the number of shoes from 1 to 10 are compared with the code of the first digit of the subscriber number installed at the outputs of the first block 3. When the comparison occurs, the output of the comparison block 4 generates a pulse, which arrives at the counting input of the first counter 2 and through the second input of the element OR 6 to the installation input of the second counter 8. At the outputs of the first counter 2, the address of the next digit of the subscriber number arrives the first unit 3 constant memory and the second counter 8 is reset to zero.

The formation of the next digit is similar.

After the last digit has been dialed, an additional signal is set at the additional output of the first counter 2, blocking the operation of the device through the element OR 6 and the element OR-NOT 7.

Claims (1)

Invention Formula five "ABOUT 0 five A device for converting a binary-decimal code to a linear code of a subscriber number, comprising a serially connected keyboard, a first counter and a first permanent memory unit, a pulse generator, characterized in that, in order to improve the accuracy of the conversion, a serially connected comparison unit, element, is inserted OR, the second counter and the second block of the permanent memory, the first outputs of which are connected to the second inputs of the comparison unit, as well as the element OR-NOT, the first input of which is combined with the second input of the element OR connected to the second output of the first counter, the counting input of which is connected to the output of the comparator unit, the second inputs of which are connected to the output of the first permanent memory block, the second inputs of which are connected to the second outputs of the keyboard, and the output of the pulse generator is connected to the second input of the OR-NOT element The output of which is connected to the counting input of the second counter and the second input of the second block of permanent memory, the second outputs of which are the outputs of the device.