SU433627A1 - DEVICE FORMATION OF PULSE SEQUENCES - Google Patents

Description

The invention relates to a pulsed technology and can be used in automation equipment and computer equipment. A device for generating pulse sequences is known, comprising a clock pulse generator (TI), a clock pulse counter (TI), a code comparison unit, a static register, and a program block. However, the known device is characterized by large hardware costs, due to the need to build a TI counter with parallel transfer of units and the presence of an adder. It is necessary to refer to the program block each time after issuing the next signal. The aim of the invention is to increase the speed and expand the functional capabilities of the device. This is achieved by the fact that between the outputs of the lower bits of the static register I: the input of the change of code of the program block the code analyzer is turned on, for example, the descrambler: recorder, and between the output of the generator TI and the reset input of the counter TI are switched on sequentially connected switch; An additional counter, controlled by the program block, is also connected to the counter input of the TI, and the signal output of the secondary counter, which is the output of the device, is connected to the input of the time switch : software module shafts and to the reset input of the switch. The drawing shows a block diagram of the proposed device. The shaping device includes 1 clock pulse generator (TI), 2 clock pulse counter (TI), code comparison block 3, static register 4, program block 5, code analyzer 6, commutator 7 and auxiliary counter 8. Code analyzer inputs are connected with the group of outputs of the least significant bits of the static register 4, and its main input is connected to the input of the code change of the program block 5. The tact input of the switch 7 is connected to the output of the generator, 1. The controlled input of the switch 7 is connected to the output of the code comparison unit 3, the reset output of the switch 7 is connected to the signal output of the auxiliary counter 8. The outputs of the switch 7 are connected to the counting inputs of the auxiliary counter 8 and counter 2. The switching input auxiliary-. telny counter 8 is connected with the manager; the output of the program block 5. Intermediate HUH output of the Auxiliary counter 8 is connected to the reset input of counter 2, and the signal output of the auxiliary counter 8, which is the output of the entire device, is connected to the input of the change of time intervals of the program block 5 and to one of the inputs of the switch 7. Static register inputs 4 are connected to software block 5. The bits of the counter 2 and the static register 4 are connected to the inputs of the code comparison block 3.

The device works as follows;

In the static register 4, a code of a number is written, which, by a small positive value of H, is relative to the number specified in the program. The shortening of the period between TI is compensated by means of an auxiliary counter 1k 8. Code analyzer 6 determines which class (prohibited or allowed) the number code written in static register 4 belongs to.

The forbidden class includes codes for which at the moment of decoding a long transfer of units takes place in counter 2. The detection of the forbidden code is performed by analyzing the contents of the lower bits of the static register 4.

If the number code is related to the allowed one, then at the moment when the codes in the counter 2 and the static register 4 will match, the output of the comparison block of codes 3 is a signal. This signal is sent to the control input of switch 7, which is triggered and switches the TM supply to the counting wave of the auxiliary counter 8. Counter 2 pulses are zeroed by the counter 2 under the influence of a signal that is generated at the intermediate output of the auxiliary counter 8.

After calculating the H.N. pulses at the signal output of the auxiliary switch 8, an impulse appears, the time position of which is given by the program. Under the influence of this signal, switch 7 is returned to its initial state, and software block 5 outputs the following code to static register 4.

If the new code is in the class of prohibited, then from the output of the code analyzer 6

a signal is issued, under the influence of which a new code of the number reduced by /// 2 relative to the programmed one is output to the static register 4. This code is in the allowed class. At the same time, a signal from the output of program block 5 is input to the switch input of the auxiliary counter 8, and the auxiliary counter 8 is rebuilt to count I / 2 pulses. Further, the operation of the device is similarly repeated.

Thus, the auxiliary counter 8 provides a time shift of the signal generation time by one of the two fixed intervals H or H / 2. The auxiliary counter 8 is switched from a longer to a shorter time interval when the unresolved code is replaced with an allowed code.

Subject invention

A pulse sequence generator containing a clock pulse generator (TI) and a code comparison unit, to the one group of inputs of which are connected the clock counter (TI) outputs, and to the other inputs - outputs of a static register controlled by the inputs of the program block, that, in order to increase speed and enhance functional possibilities, between the outputs of the lower bits of the static register and the change of the code of the program block, the keys of the code analyzer, for example, the decrypt op, and between the output of the generator TI and the reset reset of the counter TI are turned on and connected to a switch controlled by a code comparison unit, and an auxiliary meter that is controlled by a direct control unit, besides, one of the switch outputs is connected to the counting input of the TI counter, and the sigalping output of the auxiliary meter, is the output of the device, connected to the input of the change of time intervals of the protra.mm block and to the reset input of the switch.

Output

AT

I

one

-four