Circuit for deriving a timing signal from digital imput signals

Details Circuit for deriving a timing signal from digital imput signals Circuit for deriving a timing signal from digital imput signals

1980-12-16

1983-11-01

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

With reference oscillator or source

331117R, 331173, 375120, H03L 706

Patent

active

044132360

ABSTRACT:
To obtain a timing signal in the regeneration of digital pulses from recordings or after transmission, two start-stop oscillators are triggered, respectively, by signals to be regenerated and by the same signals after inversion. The output signals from these oscillators are combined into a single signal which has the frequency of the desired timing signal, and a flywheel circuit is used to produce a continuously alternating voltage. Each of the start-stop oscillators is conveniently implemented by a pair of transistors whose emitters are interconnected by an inductor and individually connected to an operating voltage via a capacitor and a resistor, respectively.

REFERENCES:
patent: 3493868 (1970-02-01), Hackett, Jr.
patent: 4287480 (1981-09-01), Swift et al.
patent: 4310805 (1982-01-01), Hackert et al.

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