SU559445A1 - Electronic keyboard dialer - Google Patents

Description

one

The invention relates to communication technology and can be used in telephony.

There are various electronic keyboard dialing1: eL.

Closest to the Invention is the electrode dial pad, which includes a bit dialing keyboard, a pulse generator, and an oscillator control unit. an inter-series time delay unit, a number of digit counter, a key and a circuit of a series of coincident blocks and a pulse counter connected in series.

The most significant disadvantage of such a dialer is the need to encode the information dialed by the subscriber, which complicates the internal logic circuitry.

The purpose of the invention is to simplify the dialer by eliminating the encoder.

In order to achieve this goal, circuits according to the invention are additionally introduced into the electronic keypad according to the invention, the number of which is determined by the number of characters in the subscriber numbering, each consisting of a series of matching blocks and a pulse counter, and the input of the block matching each circuit and is connected to the corresponding output of the counter of the number of digits, the input of which is connected to the output of the generator control unit through the inter-serial counter With the output of a random dialing keyboard, the second output of which is connected to the input of the generator control unit i, the auxiliary input of the control unit is connected to the outputs of all pulse counters, the output of the pulse generator is connected to the key and to the additional inputs of all pulse counters, and the other inputs of the blocks match and matchpad buttons are connected to the corresponding entries.

This implementation of the dialer simplifies its scheme by eliminating the encoder and P0v3vol e use it as a set-top box to the telephone PBX while maintaining the possibility of dialing using a mechanical dialer, and as part of a special telephone, operator console or switch.

The drawing shows a structural electrical circuit of the proposed electronic keyboard pad.

The dialer contains a simple dialing 1, a pulse generator 2, a generator control block 3, an inter-block time delay block 4, a digit counter 5, a key 6, a circuit from a series-connected match block 7 and a pulse counter 8, as well as additional circuits which is determined by the number of characters in subscriber numbering, which also consist of serially connected blocks of coincidence 7 and pulse counters 8, while the input of block of coincidence 7 of each circuit is connected to the input of the corresponding pulse counter | 8 and connected to the corresponding output of the 5-digit counter whose input is connected to the output of the generator control unit 3 via the inter-series time delay block 4 and to the output of the bit set keyboard 1, the second output of which is connected to the input of the generator control block 3, the additional control block is connected to the outputs of all pulse counters 8, the output of the pulse generator 2 is connected to the key 6 and to the additional inputs of the pulse counters 8, and the other inputs of the matching blocks 7 and buttons of the same bit set 1 cheny to the post 9 corresponding tires.

Electronic keyboard dialer works as follows.

When dialing a number, the subscriber sequentially presses the buttons of keyboard 1, connected to the pin 9, according to the number of the called subscriber. Each time the buttons of keyboard 1 are pressed, the 5-digit counter moves to the next position, ensuring that the next digit of the dialed number is written to the corresponding pulse counter 8 and the matching block 7. After dialing the number, having received the station's response, the subscriber presses 1 transfer button on the keyboard. In this case, the generator control unit 3 permits the operation of the pulse generator and returns the counter 5 to the first position.

From the output of the generator 2, the pulses of the set arrive simultaneously at the input of the pulse counter 8 and to the key 6, which forms the necessary linear signals. After transmitting the required number of pulses, the counter 8 returns to its original position and, through block 3, prohibits the operation of generator 2. Simultaneously, block 4 of inter-serial time delay is started. After a time delay, the counter 5 of the number of digits is transferred to the next (second) position, in this case the prohibition from the pulse generator 2 is lifted, and the pulse counter in the line and counter. Call 8 transmits dialing pulses corresponding to the second digit of the called number, and so on.

Claims (1)

Invention Formula An electronic dial pad that contains a bit-dial keyboard, a pulse generator with a control unit, an Inter-Time Time interlock, a digit number counter, a key and a circuit from a series-connected match block and a pulse counter, characterized in order to simplify the dialer by eliminating the coder it additionally introduces the circuits, the number of which is determined by the number of characters in the subscriber numbering consisting of series-connected coincidence blocks and pulse counters, with this The input of the coincidence unit of each circuit is connected to the input of the corresponding pulse counter and connected to the corresponding output of the digit counter, the input of which is connected to the output of the generator control unit through the inter-serial time delay block and to the output of the paradial set keyboard, the second output of which is connected to the input of the block control generator, an additional input of the control unit is connected to the outputs of all pulse counters, and the output of the pulse generator is connected to the key and to the additional inputs of all counters pulses, and the other inputs of the match blocks and bitstroke buttons are connected to the corresponding write bits.