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. 27, 1978
Filed:
Feb. 09, 1977
Nippon Electric Co., Ltd., Tokyo, JA;
Abstract
Method and apparatus for cancelling a deviation in an input signal due to drift, line or background noise, changes in circuit component characteristics due to aging, and the like wherein the input signal, typically a digitized representation of an analog signal, is altered by a presumed offset magnitude; the polarity of the difference is monitored and a negative or positive count of clock pulses is accumulated dependent upon the aforesaid polarity. When a determined positive (or negative) count is reached the presumed offset is adjusted (up or down) by a predetermined increment and the count is begun anew. As an alternative technique and embodiment the initiation of the count may be restrained as long as the magnitude of the digitized input signal exceeds a predetermined threshold.