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. 14, 2001
Filed:
Apr. 03, 1998
Richard D. Barndt, Fremont, CA (US);
Hewlett-Packard Company, Palo ALto, CA (US);
Abstract
A multi-transducer magnetic head includes an array of transducer pairs positioned across at least a portion of a cross section of a magnetic tape path. Each transducer pair includes at least one write transducer and at least one read transducer. Within each transducer pair, a first centerline through the write transducer is generally parallel to a second centerline through the read transducer. Distances between the first and second centerlines within individual transducer pairs increase with distances of the transducer pairs from a head position reference point. In the preferred embodiment, the write transducers have a first pitch and the read transducers have a second pitch. However, the read transducers are biased toward the head position reference point, so that the pitch of the read transducers is smaller than the pitch of the write transducers. The method of determining the positions of the read and write transducers includes (1) dividing the sources of transducer-to-track alignment errors into biased and non-biased sources, (2) calculating preferred margins to compensate for the non-biased sources, and (3) laterally biasing the read transducers, the write transducers, or both to compensate for the biased sources.