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. 13, 1990
Filed:
Jan. 05, 1988
Applicant:
Inventor:
Friedrich R Hertrich, Boulder, CO (US);
Assignee:
Digital Equipment Corporation, Maynard, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371 401 ; 360 53 ;
Abstract
In a multi-track digital recording medium, data blocks on different tracks are algebraically combined to generate an error correction code (ECC) stored in an ECC block on one of the tracks. Unrecoverable errors due to horizontal and vertical clustering of dropouts on magnetic tape, for example, are reduced by XOR-ing data blocks along a diagonal path traversing several tracks to form the ECC.