Light-receiving circuit

Details Light-receiving circuit Light-receiving circuit

2007-09-04

2007-09-04

Epps, Georgia (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S2140AG, C330S308000

Reexamination Certificate

active

11198394

ABSTRACT:
The present invention is to provide a light-receiving circuit, in particular, the circuit for an avalanche photodiode (APD), in which the current of the APD is dynamically controlled to protect the APD from the over current. The circuit comprises the high voltage source, the current mirror circuit connected to the high voltage source, the APD connected to one of the current output terminal of the current mirror circuit, and the current source connected to the other current output terminal of the current mirror circuit. The current flowing out from the other current output terminal is dynamically controlled by the current source to protect the APD from the over current.

REFERENCES:
patent: 6426495 (2002-07-01), Hayami et al.
patent: 7071455 (2006-07-01), Irie
patent: 2003/0178552 (2003-09-01), Hofmeister et al.
patent: 2005/0001150 (2005-01-01), Yonemura
patent: 59-160345 (1984-09-01), None
patent: 02-050534 (1990-02-01), None
patent: 05-343926 (1993-12-01), None
patent: 10-303820 (1998-11-01), None
patent: 2000-244418 (2000-09-01), None

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