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:
May. 06, 1997
Filed:
Oct. 18, 1993
Masataka Mukai, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
When a reference tape tension is changed progressively from a current tape tension to a target tape tension, a tape tension can be made to approach the reference tape tension rapidly and reliably regardless of the magnitude of the difference between the current tape tension and the target tape tension. A tape servo apparatus detects a current tape tension, compares the detected current tape tension with the reference tape tension and regulates the tape tension in response to the comparison between the detected current tape tension and the reference tape tension while the reference tape tension is gradually changed from the current tape tension to the target tape tension, preferably, in a step-wise fashion. The current tape tension is thereby corrected so the system maintains the desired tape tension.