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:
Jul. 05, 1994
Filed:
Aug. 30, 1991
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A tape drive controlling device includes a first controlling circuit for driving a take-up reel for a tape on the basis of the result of a comparison between a take-up-side tension measured between the take-up reel and a head and a predetermined tension target value, a second controlling circuit for driving a supply reel for the tape on the basis of the result of a comparison between a supply-side tension measured between the supply reel and the head and a predetermined tension target value, a speed detecting circuit for detecting the travel speed of the tape, and a correcting circuit for correcting at least one of the take-up-side and supply-side tension target values on the basis of the result of a comparison between a detection result provided by the speed detecting circuit and a travel speed target value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile