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:
Mar. 12, 1985
Filed:
Apr. 04, 1983
Peter B Bandy, Pine Island, MN (US);
John A Danen, Rochester, MN (US);
Nyles N Heise, Rochester, MN (US);
Donald C Holtan, Pine Island, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A multiple transducer disk file format and head addressing/switching control circuitry is shown and described which permits reading all sector identifier (ID) fields during a single rotation of the media using uniformly staggered sectors. This results in an average access latency of one-half revolution of the media and enables the use of maximum or selectively reduced data rates secured by successively storing data in sectors separated by sector fractions which are multiples of the uniform staggering between sectors within a cylinder.