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. 26, 1998
Filed:
Dec. 06, 1996
Sony Corporation, Tokyo, JP;
Abstract
A reel servo device employed in a recording and/or reproducing apparatus employing a tape cassette housing a tape as a recording medium includes an unusual running detection circuit for deciding if the tape housed within the tape cassette loaded on the tape recording and/or reproducing apparatus is wound in a slack winding state on a tape reel. If the tape running state is decided to be an unusual tape running state, tape tension data from the supply side tension arm is differentiated. If the differentiation data is positive indicating an increasing tape tension, the rewind side reel motor is controlled in a direction of slackening tape tension at the rewind tape reel side. Conversely, if the differentiation data is negative indicating an decreasing tape tension, the rewind side reel motor is torqued in a direction of tensioning the tape at the rewind tape reel side.