Optical receiver apparatus for quickly detecting loss of a compo

Details Optical receiver apparatus for quickly detecting loss of a compo Optical receiver apparatus for quickly detecting loss of a compo

1994-09-19

1996-12-31

Allen, Stephone

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

359161, 359189, 375359, 375357, 375228, H01J 4014

Patent

active

055896839

ABSTRACT:
An optical signal receiver apparatus contains: a photoelectric conversion circuit for receiving an optical signal conveying cyclic timing information, and converting the optical signal into an electrical signal conveying the cyclic timing information; a receiving clock signal extraction circuit for extracting a receiving clock signal indicating the cyclic timing information, from the electrical signal; and a loss-of-clock digital-detection circuit for detecting absence of a change in a digital level of the receiving clock signal.

REFERENCES:
patent: 4308472 (1981-12-01), McLauglin
patent: 4473901 (1984-09-01), Jensen
patent: 4644567 (1987-02-01), Artun et al.
patent: 4757193 (1988-07-01), Kollanyi
patent: 4876701 (1989-10-01), Sanner
patent: 5418905 (1995-05-01), Rarity et al.
Dr. Baier, Elektronik-Lexikon, Franckh'sche Verlagshandlung Stuttgart 1082, p. 607, Jan. 1983.
Tietze-Schenk, Halbleiter-Schaltungstechnik 6, Auflage 1983, Springer-Verlag, Berlin usw.

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