Analog-to-digital conversion apparatus and sensing apparatus...

Details Analog-to-digital conversion apparatus and sensing apparatus... Analog-to-digital conversion apparatus and sensing apparatus...

2006-03-23

2010-11-30

Tabatabai, Abolfazl (Department: 2624)

Image analysis

Applications

Manufacturing or product inspection

C341S126000, C341S155000

Reexamination Certificate

active

07844102

ABSTRACT:
A sensing apparatus includes a reference voltage generation circuit for generating a first and a second reference signals having different constant voltage levels, an A/D conversion circuit having a ring-gate-delay circuit, and a correction circuit for correcting an output value of the A/D conversion circuit. The A/D conversion circuit converts a load signal and the first and second reference signals to digital data based on the number of times a pulse signal input to the ring-gate-delay circuit circulates through the ring-gate-delay circuit. The correction circuit corrects the output value based on a ratio of a first difference between the digital data to a second difference between the digital data.

REFERENCES:
patent: 5396247 (1995-03-01), Watanabe et al.
patent: 5995033 (1999-11-01), Roeckner et al.
patent: 6188346 (2001-02-01), Waho et al.
patent: 6255976 (2001-07-01), Watanabe et al.
patent: 6307496 (2001-10-01), Ikuta et al.
patent: 6329825 (2001-12-01), Tanaka et al.
patent: 6509861 (2003-01-01), Watanabe
patent: 2001-053608 (2001-02-01), None
patent: 2005-005913 (2005-01-01), None
Japanese Office Action dated Jan. 29, 2010, issued in corresponding Japanese Application No. 2005-099326, with English translation.

Affiliated with

Also associated with

Rating

Analog-to-digital conversion apparatus and sensing apparatus... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Analog-to-digital conversion apparatus and sensing apparatus..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analog-to-digital conversion apparatus and sensing apparatus... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4250153