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:
Aug. 23, 1977
Filed:
Oct. 05, 1976
Lenard M Metzger, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A servo control system provides interactive correction for both tracking and time base errors in a signal reproduced by a rotating playback head from magnetic tape. A tracking control head overlapping adjacent slant tracks provides a signal to a capstan servo for correcting positional errors. Time base errors are corrected by controlling a head servo with respect to variations in the incoming signal time base sensed by the playback head. By mounting both heads on the same head wheel, the head servo control provided by the playback signal has an interactive effect on the tracking sensor: with the playback head wheel moving at the correct speed to eliminate time base error, the tracking sensor will 'pull' the tape into precise tracking alignment by adjustment of the capstan servo. With the tape and head replicating their exact counterpart speeds obtained during record, skew at the point of head switching is automatically eliminated.