SU1215190A2 - Keyboard telephone dial - Google Patents

Abstract

The invention relates to telephone technology. The purpose of the invention is to limit the max. Possible number of repeated sets of numbers. The device contains a keyboard 1, a contact bounce block 2, a memory unit 3, a code converter 4, a clock pulse generator 5, a frequency divider 6, a dialing driver 7, an initial setup block 9, a generator 10 initial setup signal write - read, redial block 1I, pulse key 12, talk key 13, control block 14, frequency divider 15 with variable coefficients. division, bistable block (BB) 16, block 17 setting the coefficient. the division, the memory of the permissible number of repetitions (TUVCHP) 18, the key unit 19. The next call to the subscriber is made only by direct dialing with the possibility of subsequent redialing, the number of which is determined by the TU18.18, BB 16 is returned to its original condition. In necessary cases, the device allows unlimited redialing, CTPAP 18 sends a command to block 17, which prevents the BB from tipping 16. The invention is additional to the main author. St. No. 655088. I Il. i (lu ate with

Description

The invention relates to telephone technology, in particular, to electronic dialing devices for voice dialing telephones, and is in addition to auth. 655088.

The purpose of the invention is to limit the maximum possible number of repeated sets of numbers.

The drawing shows a structural electrical circuit of a pad dialer.

The keyboard dialer contains keyboard 1, contact bounce unit 2, memory block 3, code converter 4, 5 clock pulses, frequency divider 6, driver 7 and dial dial amp, unit B of initial setup, driver 9 of initial setup signal, block 10 of recording -reader ,, redialing unit 11, pulse key 12, conversational key 13, control unit 14, frequency divider 15 with variable division factor, dynamic unit 16, division factor setting unit 17, memory unit 18 my number of repetitions, the key element 19.

The dial pad works in a very simple way.

After connecting the supply voltage, the block 8 and the driver 9 provide the formation of the signals that reset the basic functional blocks of the dialer. When you press any digital button of the tatura 1, the block 2 is triggered, which through block 14 starts the generator 5 and sets the bistable block 16 to its initial state. The information about the digit corresponding to the pressed button goes to the inputs of the block 10, but writing it to the block 3 is realized only after the end of contact bounce, when block 2 issues a command to block 14, which permits its passage into the memory of block 3, where it is recorded as a binary code. Similarly, the remaining digits of the number are recorded. After testing the initial pause, the code converter 4 sends a command to organize reading to block 14. This command is used to rewrite the information from the memory 3 through block 10 to the codeset.

The developer 4, which otbybatsha read number, t, e. converts the binary code of a number into a sequence of pulses that arrive at the pulse key 12. At the time of the test, the block 14 supplies a blocking potential to the conversational key 13. The remaining digits of the number are tested in the same way. After all the information has been read in the storage unit 3, the next request of the code converter 4, affecting the unit 14, turns off the generator 5 and finishes dialing. At the same time, the impulse 12 and conversational 13 keys are supplied with the potential that ensures the conversational mode of the device. If, after this, a set of new digits is produced, then the process of writing and reading begins first and again

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The dialed digits are located in the storage unit 3 in dialing order. The previous number is erased automatically when you dial a new number.

If you need to repeat the last dialed number, you must first disconnect the station, and then click on the Repeat button. In this case, the signal from the output of the keyboard 1 includes a block 11, which, acting on the block 14, starts the generator 5 and simultaneously sends a command to the driver 9, which prohibits the passage, through the key element 19.

5 pulse setup in the storage unit 3, thereby ensuring the safety in it of information about the last dialed number. Code Converter 4 sends to block 14

0 a command to organize reading, while under the influence of block 11, block 14 overwrites the first digit of the number into code converter 4, and then turns off block 11, further reading the codes of digits stored in memory block 3, occurs according to the described algorithm. Limiting the maximum possible number of repetitions is carried out in accordance with the command sent to block 17 of block 18. Block: 17 determines the division ratio of the divider I S. Each time block 11 is triggered by its output,

5, the signal that is fixed by divisor 15. When the number of repeated sets made equals the division factor of divider 15, by its

the output will generate a signal that will overturn the bistable block 16, while the potential arising at the output of the bistable block 16 will close the key element 19. At the next re-dialing After the block 11 is triggered, the command to prohibit the pulse of the initial installation will not pass from the block 11 output to the driver 9 through the closed key element 19, the zero signal will go to the storage unit 3 and bring it to its initial state. The code converter 4 request will go through block 14 to block 10, but due to lack of information in the storage unit C, block 4 will reset block 11 and turn off generator 5. the possibility of subsequent re-dialing, the number of which is determined by block 18. Bistable block 16 again returns to the original with; the rest, which makes it possible to redial the number to be dialed, the number determined by block 18,

If necessary, the device also provides the possibility of unlimited redialing. In this case, block 18 sends to block 17 a command i which prohibits the tilting of the bistable

block 16, I

Claims (1)

Invention Formula J The custom dialer for aut., S., No. 655088, about tl and, kg and s with the fact that, in order to limit the maximum possible number of repeated dialing of numbers, a variable divider with a variable division factor is introduced into it, a bistable block , the division factor setting unit, the key element and the memory unit of the permissible number of repetitions, the output of which is connected to the input of the division ratio setting unit, the first and second outputs of which are connected respectively to the first input of the bistable unit and the first frequency divider input from ne the second division and third input of which is connected respectively to the first input of the control unit and the second output of the redialing block, the first head of which is connected to the third input of the initial setting signal generator via a key element, one of the inputs of which is connected to the output of the bistable block, the second and the third inputs of which are connected respectively to the output of the frequency divider with the variable division factor and the fifth input of the control unit.