Receiving apparatus

Details Receiving apparatus Receiving apparatus

2006-10-11

2008-11-11

Pyo, Kevin (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S2140LA, C250S2140RC, C330S308000

Reexamination Certificate

active

07449669

ABSTRACT:
There may be provided a receiving apparatus including: a light receiving element which receives an optical signal and generates a current signal dependent on the optical signal; a conversion unit which converts the current signal into a voltage signal; a reference voltage generation unit which generates a reference voltage; a threshold voltage generation unit which generates, based on the voltage signal outputted from the conversion unit and the reference voltage outputted from the reference voltage generation unit, a threshold voltage signal having an amplitude smaller than an amplitude of the voltage signal with reference to substantially the center of amplitude range of the voltage signal and delayed by a predetermined time period from the voltage signal; and a comparison unit which compares the voltage signal outputted from the conversion unit with the threshold voltage signal outputted from the threshold voltage generation unit.

REFERENCES:
patent: 4431916 (1984-02-01), Couch
patent: 5247211 (1993-09-01), Sakura
patent: 5955921 (1999-09-01), Ide et al.
patent: 6072366 (2000-06-01), Maeda et al.
patent: 6885249 (2005-04-01), Suzunaga
patent: 57-192155 (1982-11-01), None
patent: 8-163054 (1996-06-01), None

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