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:
Oct. 07, 1986
Filed:
Mar. 21, 1984
Applicant:
Inventors:
Terry Cook, Sioux Falls, SD (US);
Timothy Graham, Hartford, SD (US);
Assignee:
Sencore, Inc., Sioux Falls, SD (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01R / ;
U.S. Cl.
CPC ...
324 / ; 324 / ; 331176 ;
Abstract
A frequency counter employs a temperature sensitive oscillator mounted in proximity to a master crystal oscillator to provide an output frequency which varies appreciably with changes in ambient temperature and the frequency of the temperature sensitive oscillator is periodically counted and compared to a table of correction factors stored in memory to select a correction factor which is applied to the counted frequency of an input signal to provide a temperature corrected frequency count.