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:
Oct. 04, 1994
Filed:
Nov. 04, 1992
Henry L Alioth, Carlsbad, CA (US);
Other;
Abstract
An invention for positioning information tracks that are on a recording medium so that the scan path of a replay transducer is aligned with respect to those tracks has been discovered. The invention relieves tracking systems of the requirements of having dedicated servo heads, servo tracks, embedded servo recordings or preformatting procedures. A replay transducer 'looks' for a synchronization mark on a data track to arrive at a prescribed time determined in a calibration step. The correct arrival time of the synchronization mark assures the correct positioning of the data track with respect to the scan path. Alternatively, an early or late arrival time signals an incorrect position and triggers a correction adjustment to the recording medium advancement mechanism.