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.

Date of Patent:
Nov. 03, 2009

Filed:

Nov. 15, 2006
Applicants:

Yawshing Tang, Saratoga, CA (US);

Carl Xiaodong Che, Saratoga, CA (US);

Inventors:

Yawshing Tang, Saratoga, CA (US);

Carl Xiaodong Che, Saratoga, CA (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B 20/14 (2006.01);
U.S. Cl.
CPC ...
Abstract

A hard disk drive with an encoder that writes data onto a disk in accordance with a plurality of first codes. Each code contains a plurality of digital bits. The first codes are selected so that if a bit is added or dropped during a write or read process the resulting bitstream can only be one of the selected first codes. This allows the bitstream to be accurately decoded to detect and correct for the added/dropped bit.


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