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:
Dec. 10, 1985
Filed:
Sep. 16, 1982
Applicant:
Inventor:
Marshall Williams, Fremont, CA (US);
Assignee:
Ampex Corporation, Redwood City, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ; G11B / ;
U.S. Cl.
CPC ...
242189 ; 360137 ;
Abstract
The tension arm position of a tape recorder is sensed and any change in position is added as a correction factor to the capstan tach or tape timer tach count generated during a reel tach period. To this end, the tension arm position signal is clamped to ground at the start of the capstan count. At the end of the capstan count, the tension arm position is sensed to provides a value that is proportional to the change in the position that has occurred during the capstan count. The value is then added to the capstan count to provide a corrected capstan count that no longer contains a tension arm error and constitutes a precise tape remaining output signal.