Signal detecting system using a difference in sample hold...

Details Signal detecting system using a difference in sample hold... Signal detecting system using a difference in sample hold...

2006-03-08

2010-02-23

Tran, Sinh (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S243000, C250S208100

Reexamination Certificate

active

07667745

ABSTRACT:
A signal detecting system for reading a charge signal from an image recording medium includes a signal storing circuit, a first low-pass filter into which the charge signals stored in the signal storing circuit are input, a first sample hold circuit which sample-holds the charge signal passing through the first low-pass filter, a second low-pass filter into which the charge signals stored in the signal storing circuit are input, a second sample hold circuit which sample-holds a reference level signal when the input of the charge signal passing through the second low-pass filter is at a reference potential, a difference circuit which outputs as an image signal the difference between the charge signal and the reference level signal, and a controller which controls the initiating timings of the sample hold circuits so that the initiating timing of the first sample hold circuit is earlier than that of the other.

REFERENCES:
patent: 5572155 (1996-11-01), Tamayama
patent: 6211914 (2001-04-01), Kubo
patent: 6476864 (2002-11-01), Borg et al.
patent: 7133074 (2006-11-01), Brehmer et al.
patent: 2004/0234294 (2004-11-01), Nagame et al.
patent: 2005/0226368 (2005-10-01), Francke
patent: 2007/0139710 (2007-06-01), Ohta
patent: 2007/0206113 (2007-09-01), Nakamura et al.
patent: 2004-147255 (2004-05-01), None

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