Apparatus and method for measurement of temperature using...

Details Apparatus and method for measurement of temperature using... Apparatus and method for measurement of temperature using...

2011-03-29

2011-03-29

Caputo, Lisa M (Department: 2855)

Thermal measuring and testing

Temperature measurement

In spaced noncontact relationship to specimen

C374S117000, C331S176000, C327S512000

Reexamination Certificate

active

07914204

ABSTRACT:
A temperature sensor includes: a first oscillator that generates a first frequency signal; a second oscillator that generates a second frequency signal; a multiplexer that selectively passes the first frequency signal and the second frequency signal; and a frequency-to-digital converter that converts a frequency difference between the first frequency signal and the second frequency signal into a digital code.

REFERENCES:
patent: 3732728 (1973-05-01), Fitzpatrick
patent: 4513259 (1985-04-01), Frerking
patent: 5214668 (1993-05-01), Satou et al.
patent: 5895629 (1999-04-01), Russell et al.
patent: 2008/0007362 (2008-01-01), Partridge et al.
patent: 11-002571 (1999-01-01), None

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