SU938413A1 - Frequency divider - Google Patents

Description

(B) FREQUENCY DIVER

Claims (2)

The invention relates to a pulse and computer technology, radio engineering and automation and can be used in devices designed to generate pulses of variable frequency and duration. Known frequency divider with variable division factor, containing a frequency shaping unit, performed on a binary reversible counter, the first input of which is connected to the counter pulse bus, the second to the buses of the pulse division code, the third subtraction bus, the fourth to the Reset signal bus, n the sixth one is with the write bus, the sixth is the signal bus of the Record, and the zero output of the counter is connected to the output of the block (1 The disadvantage of this frequency divider with a variable division factor is its limited function There is also a variable frequency division divider containing a control unit, a pulse generation unit, a duration shaping unit in a frequency shaping unit, the reset input of which is connected to the reset input of the pulse generation unit, the output and the first input of which are connected respectively to the output of the frequency divider with a variable division factor and the first output of the block forming the duration, the first and second inputs of which are connected respectively to the first and second outputs of the block control {2 The disadvantage of the known frequency divider with a variable division factor is the limitation of its functionality. The purpose of the invention is to expand the functionality. The goal is achieved by the fact that in a frequency divider with a variable division factor, containing a control unit, a pulse generating unit, a duration shaping unit and a frequency shaping unit, the reset input of which is connected to the reset input of the pulse generating unit, the output and the first input of which are connected respectively to the output of the frequency divider with a variable division factor and the first output of the duration shaping unit; the first and second inputs of which are connected respectively to the first and the fifth outputs; The control, the first, second and third inputs and the reset input of the control unit are connected, respectively, with the variable frequency divider input with a variable division factor, the output of the frequency shaping unit and the second output of the duration shaping unit, the reset input of which is connected to the reset input of the pulse generating unit and the input reset a frequency divider with a variable division factor, the first group of control inputs of which is connected to a group of control inputs of a duration shaping unit, the third input of which is connected to The output of the control unit, the first input of the frequency shaping unit and the second input of the impulse generation unit, the third input of which is connected to the fourth output of the multiplication unit, the fifth output of which is connected to the fourth input of the output generating unit, the first and second additional inputs of which are connected to the first and the second additional inputs of a frequency divider with a variable division factor, the second group of control inputs of which is connected to the group of control inputs of a frequency shaping unit, a recording input to toro connected to the input of the recording frequency divider with a variable division ratio, and second and third inputs of block forming frequency perv1m and second output sound control unit laziness. The drawing shows a block diagram of the counter. A variable divider frequency divider includes a control unit 1, a pulse generation unit 2, a duration shaping unit 3, and a frequency shaping unit A whose reset input 5 is connected to the reset input 6 of the pulse extracting unit 2, output 7 and the first input 8 which are connected respectively to the output 9 of a frequency divider with a variable division factor and the first output 10 of the shaping unit 3, the first 11 and the second 12 inputs of which are connected respectively to the first 13 and second 14 outputs of the control unit 1, the first 15, the second 16 and third 17 inputs and the reset input 18 of the control unit 1 are respectively connected to the input 19 of the frequency divider with a variable division factor, the output 20 of the frequency shaping unit 4 and the second output 21 of the shaping unit 3, the reset input 22 of which is connected to the reset input 6 of the pulse generation unit 2 and the reset input 23 of a frequency divider with a variable division factor, the first group of control inputs 2k of which is connected to the control input group of the duration shaping unit 3, the third input 25 of which is connected / is connected to the third output 26 of the control unit 1, the first input 27 of the frequency shaping unit C and the second input 28 of the pulse generation unit 2, the third input 29 of which is connected to the fourth output 30 of the control unit 1, the fifth output 31 of which is connected to the fourth input 32 of unit 2 generation of pulses, the first 33 and second 34 additional inputs of which are connected to the first and second additional inputs of a frequency divider with a variable division factor; the second Group of control inputs 35 of which is connected to a group of control inputs of block 4 frequency reduction, the recording input 36 of which is connected to the recording input 37 of a frequency divider with a variable division factor, and the second 38 and third 39 inputs of the frequency shaping unit 4 are connected to the first 13 and second 14 outputs of the control unit 1. The frequency divider with a variable division factor works as follows. In the frequency division mode at the input 33, a signal is set to the division mode, which prepares the pulse generation unit 2 for operation. At the input 35 of the frequency shaping unit 4, the binary code of the division factor is supplied, which is written to 8 THIS block by the signal received at the input 36 from input 37. Pus is set, the division factor is K-, the binary equivalent of which is 00 ... 0100. forming a frequency at the input 16 of the control unit 1, a single logical signal permitting the passage of the reference frequency to the inputs of the blocks 2, 3 and t. The first pulse, which is fed to the input 28 of the block 2 of pulse generation, passes to the output 9 of the device. In block 3, the code is set to 00 ... 0001, and in block U, the code is 0 ... 0011 The arrival of subsequent pulses is set to codes 0 ... 010. The third impulse sets the codes О. о..0011 and 0 ... 0001, and the fourth - codes 0 ... 0100 and 0 ... 0000 respectively. The next impulse passes to the output and sets in block 3 the code 0 ... 001 and in the block C - 0 ... 0001. Further work divider frequency passes in a similar way. To use a frequency divider in the mode of forming pulses of variable frequency and duration, it is necessary to input a pulse to the input 34 of block 2, which will switch block 2 to the mode of generating pulses of variable frequency and duration. The supply of a potential binary code Cd to the inputs 2 of block 3 sets the code for the duration of the output pulse. The period code (the frequency K of the output pulses following is set at inputs 35 of block + and recorded with a pulse. Record arriving at input 37 of block k. Further passage of pulses and operation of blocks 1.3 does not differ from that considered in the frequency division mode. Variable frequency divider the division factor allows the generation of pulses of variable frequency and duration, as well as extends the functionality of the frequency divider when used as a programmable control device. A variable frequency division divider comprising a control unit, a pulse generation unit, a duration shaping unit and a frequency shaping unit whose reset input is connected to the reset input of the pulse generating unit, the output and the first input of which are connected to the variable factor output respectively dividing and the first output of the duration shaping unit, the first and second inputs of which are connected respectively to the first and second outputs of the control unit, differing In order to expand the functional capabilities, the first, second and third inputs and the reset input of the control unit are connected respectively to the input of a frequency divider with a variable division factor, the output of the frequency shaping unit and the second output of the duration shaping unit, the reset input of which is connected to the reset input of the pulse generation unit and the reset input of the frequency divider with a variable division factor, the first group of control inputs of which is connected to the group of control inputs of the generation unit dur The third input of which is connected to the third output of the control unit, the first input of the frequency shaping unit and the second input of the pulse generating unit, the third input of which is connected to the fourth output of the control unit, the fifth output of which is connected to the fourth input of the pulse generating unit, the first and second additional inputs of which are connected to the first and second additional inputs of a frequency divider with a variable division factor, the second group of control inputs of which is connected to a group of control inputs s frequency generating unit recording input coupled to an input recording frequency divider with a variable division ratio, and second and third inputs of the frequency generating unit - with the first and second outputs of the control unit. Sources of information taken into account in the examination 1. USSR author's certificate number 696609, cl. H 03 K 23/00, 1977. 2. USSR author's certificate number A01005, cl. H 03 K 23/00, 1971 (prototype). at five , 85 k I /, i -t ud " ti "" "SI §: j j AND Sg;