Image sensing apparatus

Details Image sensing apparatus Image sensing apparatus

2006-02-07

2006-02-07

Lee, Cheukfan (Department: 2622)

Facsimile and static presentation processing

Facsimile

Picture signal generator

C358S474000, C250S208100

Reexamination Certificate

active

06995879

ABSTRACT:
An image sensing apparatus (10) has n photodiodes (PD1-PDn), signal processors (SP1-SPn), and output switches (SW1-SWn) connected to each other. Each signal processor includes an integrator (12) for amplifying an output from the photodiode, a buffer (14) for holding an output from the integrator (12), a first switch (16) inserted between the photodiode and the integrator (12), a second switch (18) for connecting the photodiode and an overflow drain (Vofd), a third switch (20) inserted between the integrator (12) and the buffer (14), a fourth switch (22) for connecting the buffer (14) and a reference voltage (Vref) source, and a controller (24) for controlling the ON/OFF operation of the first to fourth switches based on the comparison result between an output voltage from the integrator (12) and the reference voltage (Vref).

REFERENCES:
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patent: 6606121 (2003-08-01), Bohm et al.
patent: 6606123 (2003-08-01), Mizuno
patent: 6642501 (2003-11-01), Mizuno
patent: 4-267672 (1992-09-01), None
patent: 5-215602 (1993-08-01), None
patent: 6-105069 (1994-04-01), None
patent: 6-178046 (1994-06-01), None
patent: WO 98/14002 (1998-04-01), None

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