Advanced thermal sensor

Details Advanced thermal sensor Advanced thermal sensor

2005-01-13

2008-09-23

Verbitsky, Gail (Department: 2859)

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

C374S001000, C374S170000, C374S178000, C327S513000

Reexamination Certificate

active

07427158

ABSTRACT:
Systems and methods for reducing the complexity and size of thermal sensors, where the voltage of a thermally sensitive device is compared to a reference voltage that varies as a function of temperature, rather than being constant. One embodiment comprises a thermal sensing system including a reference voltage generator, a thermal sensor and a comparator. The reference voltage generator is configured to generate a non-constant reference voltage that varies as a known function of temperature. The thermal sensor is configured to generate a sensor voltage that also varies as a known function of temperature. The functions of the reference and sensor voltages cross at a known temperature/voltage. The comparator is configured to compare the sensor voltage and the reference voltage and to generate a comparison output signal based on the comparison of the sensor voltage and the first reference voltage. A transition in this signal indicates the reference temperature.

REFERENCES:
patent: 3908162 (1975-09-01), Marley et al.
patent: 3911746 (1975-10-01), Spangler et al.
patent: 4497586 (1985-02-01), Nelson
patent: 4588940 (1986-05-01), Embree et al.
patent: 4701639 (1987-10-01), Stanojevic
patent: 5214370 (1993-05-01), Harm
patent: 5451892 (1995-09-01), Bailey
patent: 5875142 (1999-02-01), Chevallier
patent: 6140860 (2000-10-01), Sandhu
patent: 6157244 (2000-12-01), Lee et al.
patent: 6232829 (2001-05-01), Dow
patent: 6236320 (2001-05-01), Senba
patent: 6489831 (2002-12-01), Matranga et al.
patent: 6733174 (2004-05-01), Matsumoto et al.
patent: 6736540 (2004-05-01), Sheehan et al.
patent: 6811309 (2004-11-01), Ravishanker
patent: 6813131 (2004-11-01), Schmalz
patent: 6921199 (2005-07-01), Aota et al.
patent: 6934645 (2005-08-01), Kim
patent: 6958597 (2005-10-01), Lin et al.
patent: 7033072 (2006-04-01), Aota et al.
patent: 7078954 (2006-07-01), Watanabe
patent: 7127368 (2006-10-01), Choi
patent: 7197421 (2007-03-01), Pan
patent: 2003/0072119 (2003-04-01), Segarra
patent: 2003/0214336 (2003-11-01), Watanabe
patent: 2004/0004992 (2004-01-01), Aota et al.
patent: 2004/0047397 (2004-03-01), Park et al.
patent: 2004/0233600 (2004-11-01), Yoshida et al.
patent: 2005/0220171 (2005-10-01), Faour et al.
patent: 2006/0029123 (2006-02-01), Johnson
patent: 2006/0176052 (2006-08-01), Seo
patent: 09260589 (1997-10-01), None
Banba et al., “A CMOS Bandgap Reference Circuit with Sub-1-V Operation”, May 1999, IEEE JSSC vol. 34, No. 5, pp. 670-674.

Affiliated with

Also associated with

Rating

Advanced thermal sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Advanced thermal sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Advanced thermal sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3976392