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:
May. 15, 1990
Filed:
Apr. 16, 1987
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 49 ; 360 48 ;
Abstract
A method for controlling a rotating storage unit which parallelly transfers data between a plurality of heads of the rotating storage unit and a plurality of tracks of a record medium is disclosed. When there is a defective sector in any track, a non-defective sector which appears next to the defective sector as viewed in a sequence of logical arrangement of records in the sectors of the tracks is assigned as an alternative sector.