SU149950A1 - Pulse Coding Device - Google Patents

Description

Devices for encoding information are known that use a cathode ray tube as a contactless switching element. The disadvantage of such devices is the bulkiness of their optical systems.

The proposed device is greatly simplified. Retaining the possibility of promptly changing the code table, it does not contain any optical systems. This is achieved by placing a signal plate on the outer surface of the screen of the cathode ray tube, consisting of isolated rectangular cells connected to the positive or negative outputs of the pulse generator in accordance with the code table.

FIG. 1 is a schematic diagram of the device; in fig. 2 - signal plate.

The device contains: a pulse generator GI; diagram of PS counting device; key scheme of EC with capacity C; a chain of three series-connected KPP-relay KR1, KR2, KRZ; split load cascade; oscilloscopic CRT tube with power supply and signal plate P; CC coincidence circuit. The signal plate is assembled from rectangular cells. Cells according to the code table are connected to the positive and negative outputs of the pulse generator. This design allows for easy change of the coding law and does not require the use of optics and photo cells.

The voltage from the pulse generator GI is applied to the circuit for the formation of a step voltage of the PS scaler, one output of which is connected to the horizontal deflection plates G of the cathode ray tube. The other output of the scaling circuit is connected to the blocking generator of the MS scaling device operating in standby mode. The pulses from the blocking oscillator are driven by an electronic key EC, which at the time of counting the signal connects the input signal to the storage capacitor C connected to the vertical deflecting plates of the cathode ray tube. OCCHE1-C M1ALA is produced during horizontal retraction of the beam. . The impulses of positive and negative polarity are fed to the cells of the signal plate / 7 from the generator of pulses of HA, a cascade with a divided load of SCC. This allows you to change the law, encoding without the use of optics and photocells. In the current {oylector there is a pulsed component, the sign of which is opposite to the sign of the impulse applied to the cell, against which the beam is located. . The vertical position of the beam is determined by the value of the signal being encoded. From the resistance R, the signal arrives at one of the inputs of the coincidence circuit CC. The other input receives pulses delayed relative to the I1 pulse from the cascade of SCC for a time sufficient to terminate the transients. The delay n the formation of these pulses is carried out with the help of a chain of KPP-relays KR1, KR2, KRZ. Such a temporal separation of pulses eliminates the effect of transients occurring at the beginning and at the end of the pulses applied to the signal plate.

Subject invention

A device for pulse coding, comprising a cathode-ray tube, horizontal and vertical sweep generators, and an amplifier, characterized in that, in order to simplify the device, a signal plate is placed on the outer surface of the screen of the tube, consisting of isolated rectangular cells connected to the positive or negative outputs pulse generator in accordance with the code table.

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