SU771902A1 - Key-board dial generator - Google Patents

Description

(54) GENERATOR OF THE TASTE DIALER

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This invention relates to a electronic dial pad and can be used in digital automation devices.

A known generator of a dial pad that contains a serially connected clock generator and a divider with a constant division factor, as well as serially connected shift register and a forming trigger, with the second output of the shift register connected to the first input of the forming trigger 1.

However, in the known device, the frequency of the output pulses is constant, and the pulse coefficient has two fixed values, which reduces the scope of application of the known device as a pulse generator for tattoo dialers operating with different types of station equipment.

The aim of the invention is to enable operation with various types of station devices.

To do this, a shift register connected in series with a forming trigger, the second output of the shift register is connected to the first input of the forming trigger, to the generator of a dial pad dialer containing a serially connected clock generator and a divider with a constant division factor.

5, a programming unit, a programmable divider and a switching unit, the output of which is connected to the second input of the forming trigger, are entered; the information outputs of the programming unit are connected to the corresponding control dyes of the switching unit and the programmed divider, whose input is connected to the output of the divider with a constant division factor , with the first control output of the programming unit connected to the auxiliary input of the switching unit, the information inputs of which are connected to the corresponding by u. the equalization outputs of the shift register, the second input of which is connected to the output of the programmable divider, an additional

Claims (1)

20 whose input is connected to the second control output of the programming unit. The drawing shows a structural electrical circuit of the proposed generator. The generator of the keyboard dialer contains a clock generator 1, a divider 2 with a constant division factor, a programmable divider 3, a shift register 4 forming the trigger 5, a switching unit 6 and a programming unit 7. The generator of the keyboard dialer works as follows. When you press the Frequency button and one of the numeric buttons of the keyboard of programming unit 7 (not shown), a signal combination appears on the information outputs, corresponding to the selected frequency, which, when commanded from the control output of programming unit 7, is connected to the enable input of the programmable divider 3 is fed to the control inputs of the latter. The combination of signals applied to the control inputs of the programmable divider 3 sets its division ratio, i.e., thereby setting the selected frequency of the output pulses. Then they press the button "Coefficient" and one of the numeric buttons, which causes the appearance at the information outputs of the programming unit 7 of the signal combination, which when commanded from the control output of the programming unit 7 connected to the enabling input of the switching unit 6, goes to the control inputs last one. The combination of signals at the control inputs of the switching unit 6, corresponding to the pressed digital button of the programming unit 7, determines which of the information inputs of the switching unit 6 will receive a signal at its output, which sets the starting time of the forming trigger 5, and this, in turn, establishes a certain ratio of the pulse and the pause (pulse ratio) taken from the forming trigger 5. The clock generator 1, started by an external device, outputs pulses through a divider 2 with a constant coefficient The programmable divider 3, which divides the frequency of the pulses with a certain coefficient specified from the programming unit 7. The pulses of a given frequency from the programmable divider 3 are fed to the shift register 4, which alternately switches the information inputs of the switching unit 6 and outputs a reset pulse to the control the input of the forming trigger 5. The signal passing from one of the inputs of the switching unit 6 to its output, i.e. the start time of the forming trigger 5 is determined by the signal combination in the control inputs of the switching unit 6 defined by the programming unit 7. The generating trigger 5 started at a certain moment by the output signal of the switching unit 6 is reset in each period of the output pulses by a signal from the shift register 4. The outputs of the shaping trigger 5 generate pulses with the selected frequency. and pulse coefficient. Pulses with a different frequency and pulse coefficient defined by the programming unit are generated by the proposed device in the same way. Thus, the proposed generator of the dial pad allows the software to select the frequency and pulse ratio of the output pulses of the device from a known set of values, which extends the functionality of the dial pad dialers and allows them to be used in conjunction with any type of station equipment. In addition, the use of the proposed device facilitates the adjustment of electronic dial pad dialers, since during tuning you can select the most convenient observation ranges for output frequencies and impulse coefficients. Claims An oscillator of a clock dialer comprising a serially connected clock oscillator and a divider with a constant division factor, as well as serially connected shift register and forming a trigger, the second output of the shift register connected to the first input of the forming trigger, characterized in that works with various types of station devices; a programming unit, a programmable divider and a switching unit, whose output is connected, are entered with the second input of the forming trigger, the information outputs of the programming unit are connected to the corresponding control inputs of the switching unit and the programmable divider, the input of which is connected to the output of the divider with a constant division factor, with the first control output of the programming unit connected to the additional input of the switching unit, informational inputs of which are connected to the corresponding control outputs of the shift register, the second input of which is connected to the output is programmable first divider, a further input of which is connected to the second output of the control unit programming. Sources of information taken into account in the examination 1. UK patent number 1369830, cl. H 4 K, published. 1974 (prototype).