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:
Apr. 23, 1985
Filed:
Mar. 29, 1983
Toru Otsuka, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A head positioning apparatus for an HVTR has two rotary heads mounted to a rotating drum by electrically deflectable bi-morph leaves. To trace tracks on the tape when the tape is played back at a speed different from that used to record it, tracking correction signals are repeatedly applied to the bi-morph leaves to deflect the heads into position to trace the tracks properly. Residual deflection in the bi-morph leaves, when the tracking correction signals terminate at the end of each trace, is removed by a hysteresis-erasing signal that flexes the bi-morph leaf back and forth. The polarity of the hysteresis-erasing signal depends on whether the tape on playback is running faster or slower than the recording speed.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile