Comparing circuits for time-to-threshold A/D conversion in...

Details Comparing circuits for time-to-threshold A/D conversion in... Comparing circuits for time-to-threshold A/D conversion in...

2006-10-24

2006-10-24

Cho, James H. (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Using optical device,

C341S155000

Reexamination Certificate

active

07126512

ABSTRACT:
Inverters are efficient array-internal threshold detectors or comparators in digital imaging systems which use time-to-threshold A/D conversion, particularly CMOS image sensor arrays. The inverters compare sensor outputs to implicit inverter thresholds, with inverter outputs switching on threshold crossings. The inverters can have constituent transistors of with minimum size. Alternatively, non-minimum transistor dimensions can be selected to obtain desired threshold levels. Other logic circuits can also act as threshold detectors.

REFERENCES:
patent: 5461425 (1995-10-01), Fowler et al.
patent: 5479208 (1995-12-01), Okumura
patent: 5650643 (1997-07-01), Konuma
patent: 6069377 (2000-05-01), Prentice et al.
patent: 6166670 (2000-12-01), O'Shaughnessy
patent: 6307195 (2001-10-01), Guidash
patent: 6552745 (2003-04-01), Perner
patent: 6559788 (2003-05-01), Murphy
patent: 6587145 (2003-07-01), Hou
patent: 6624773 (2003-09-01), Wong
patent: 6642503 (2003-11-01), Kummaraguntla et al.
patent: 6680498 (2004-01-01), Guidash
patent: 6707410 (2004-03-01), Bock
patent: 6788237 (2004-09-01), Bidermann et al.
patent: 6850176 (2005-02-01), Laflaquiere et al.
patent: 6873282 (2005-03-01), Murphy
patent: 6885396 (2005-04-01), Panicacci et al.
patent: 6940443 (2005-09-01), Terazawa et al.
patent: 6943719 (2005-09-01), Yun et al.
Paul Horowitz & Winfield Hill,The Art of Electronics,pp. 621-630, 4thedition; 1994, Cambridge University Press, New York, no month.
Jincheol Yoo, Kyusun Choi, & Ali Tangel, “A 1 GSPS CMOS Flash Converter for System-on-Chip Applications”, IEEE Computer Society Workshop on VLSI, Apr. 19-20, 2001.

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