SU1290424A1 - Optronic shift register - Google Patents

Abstract

This invention relates to automation and computing. The aim of the invention is to expand the field of application of the register by increasing the range of variation of the ticking supply voltage. To achieve this goal, three additional phototristors are introduced into each bit cell of the three-stroke shift register, one into each chain, and the photothyristor of each chain is optically coupled to the light-emitting diode of this chain. 2 Il. GcheE with 4 ND 4

Description

one

12904

This invention relates to automation and computing.

The aim of the invention is to expand the field of application of the register by increasing the range of variation of the clock power voltage.

FIG. 1 shows a diagram of the opto-electronic shift register in FIG. 2, time diagrams of its operation.

Optoelectronic shift register. contains bit cells 1, each of which consists of the first 2, second 3 and third 4 chains. Each chain consists of an LED 5, a photo-thyristor 6, an additional photo-thyristor 7, and a resistor 8. In FIG. 1 also shows the first 9, the second 10 and the third 11 clock buses, the zero-potential bus 12, the optical input 13 and the optical output 14 of the register.

Optoelectronic shift register works as follows.

Three-phase clock voltage is supplied to clock buses 9-11, the phases of which are shifted relative to each other by 1/3 of the period (FIG. 2a). A luminous flux (Fig. 2S) is supplied to the input 13 of the register, which is sufficient to ignite the photo thyristor 6 of the first chain 2 of the first bit cell of the 1 register. At time t, when the voltage on bus 9 becomes such that the current in the first string 2 of the first bit cell 1 is equal to the turn-on current of the photo thyristor 6, the latter turns on, turning on the 1. LED at 5. At the moment t, when the current through the additional photo link - Ristor 7 becomes sufficient to turn it on, the latter turning on under the influence of the light flux of the LED 5 of its chain. The current through the LED 5 (Fig. 2B) of the first chain 2 of the first discharge cell 1 and its luminous flux (Fig. 2) changes from time t. up to the moment t under the influence of the voltage on the tire 9 (Fig. 2a), and from the time tj under the influence of the voltage between the tires 9 and 1 1.

At time tj, when the voltage on bus 10 becomes sufficient to provide in the second chain 3 a first bit cell 1 of a current equal to the turn-on current of the photothyristor 6, the latter is turned on by the light flux of the LED 5

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the first chain 2 of the first bit cell 1, lighting the LED 5 of the second chain 3 of the first bit cell 1. At time t4, then the current through the additional photo thyristor 7 of the second chain 3 of the first bit cell 1 becomes sufficient to turn it on, the latter is activated by the light flow LED 5 of its chain. The current through the LED 5 (Fig. 2a) of the second chain 3 of the first discharge cell 1 and its luminous flux (Fig. 2e) change from time t to time t4 under the influence of voltage on bus 10 (figure 2g), and from moment t - under the influence of voltage between tires 10 and 9.

At time t,; when the voltage between the tires 9 and 10 becomes insufficient for. holding the additional photo thyristor 7, the first chain 2 of the first bit cell .1, the latter is turned on, the LED 5 of its chain 2 (fng. 2B ig) is quenched.

At time tg, the photothyristor 6 of the third chain 4 of the first bit cell 1 is turned on, the LED 5 of its chain is switched on, and at time t the additional photo thyristor 7 of the same chain is turned on. The current through the LED 5 of the third chain 4 of the first bit cell 1 (Fig. 2g) and its luminous flux (Fig. 2) change under the influence of the clock voltage on the tires 10 and 11.

At the moment tg, an additional photo thyristor 7 of the second chain 3 of the first bit cell 1 is turned on, the LED 5 of its chain is quenched. At the moment tg, the additional photo thyristor 7 of the third chain 4 of the first discharge cell I turns off, and the LED 5 of its chain is turned off.

In the same way, information is shifted further. When the signal of the third chain reaches the last bit cell 1 of the register, LED 5 lights up, whose light output is the optical output of the register.

When providing optical communication between the LED 5 of the third chain 4 of the last bit cell of the register 1 and the phototype 6 of the first chain 2 of the first bit cell of the register 1, the register becomes a circle.

Claims (1)

Invention Formula An optoelectronic shift register containing bit cells each of which consists of three chains, each chain consisting of a resistor, an LED and a photothyristor, the photothyristor cathode is connected to the zero potential bus, and the anode is connected to the cathode of the LED, the anode of which is connected to one resistor lead, The second output of which the first, second, and third chains of each bit cell is connected to the corresponding clock bus, in each bit cell the LED of the first and second chains is optically coupled to the photo thyristor, respectively actually second and third f5 by the LED of this chain, the anode of the additional photo thyristor is connected to the cathode of the LED of this chain, the cathodes of the additional photo thyristors of the first, second and third chains of each chain of this bit cell, the led of the third chain of each bit 20 and the bit cell are connected optically responsible with the third, first, and secondly associated with the first thyristor clock tires. chain of the subsequent bit cell, the optical input of the photo thyristor of the first chain of the first bit cell is the optical input the register, the optical output of the LED of the third chain of the last bit cell is an optical output of the register, characterized in that, in order to expand the field of application of the register by increasing the range of variation of the clock power voltage, an additional photo thyristor is inserted into each chain, zannu with the LED of this chain, the anode of the additional photo thyristor is connected to the cathode of the LED of this chain, the cathodes of the additional photo thyristors of the first, second, and third chains of each bit cell are connected, respectively, with the third, first, and second clock buses. No J & sh if I. d / w hZtip J. I.-. "