The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 1980
Filed:
Mar. 07, 1978
Robert K Bendler, Mountain View, CA (US);
Acurex Corporation, Mountain View, CA (US);
Abstract
Apparatus for converting a dc or analog signal from, for example, a resistance type temperature detector, includes an analog to digital converter which has zero temperature drift. This is achieved by the use of two identical successive approximation digital to analog converters with an external comparator connected to both converters at the same time. By switching, one converter is used to provide zero compensation the other converter being inactive except for utilizing it as the path for the amplifier drift current; then with the switch in its other phase the other converter is activated to convert the analog signal to digital format taking into account the previously computed drift signal.