Standby apparatus for clock signal generators

Details Standby apparatus for clock signal generators Standby apparatus for clock signal generators

1976-05-10

1977-04-19

Heyman, John S.

Oscillators

Relaxation oscillators

328 61, 328 55, 328 72, 331 49, 331 55, 307219, H03K 117

Patent

active

040191435

ABSTRACT:
A clock output signal is aligned in phase to conicide with the phase of signals derived from a master clock. In the event that there is a malfunction of the master, standby control circuitry modifies the phase of the clock output signal incremental quantities until it is in phase with the phase of signals from a standby clock. The clock output signal is thereafter maintained aligned in phase to coincide with the phase of the signals derived from the standby clock.

REFERENCES:
patent: 3329905 (1967-07-01), Niertit et al.
patent: 3803568 (1974-04-01), Higashide
patent: 3900741 (1975-08-01), Fletcher et al.
patent: 3961270 (1976-06-01), Ullmann et al.
patent: 3965432 (1976-06-01), Denenberg et al.

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