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. 18, 2010
Filed:
Apr. 28, 2006
Allen Keith Bates, Tucson, AZ (US);
Nils Haustein, Soergenlock, DE;
Craig Anthony Klein, Tucson, AZ (US);
Henry Zheng Liu, Tucson, AZ (US);
Daniel James Winarski, Tucson, AZ (US);
Allen Keith Bates, Tucson, AZ (US);
Nils Haustein, Soergenlock, DE;
Craig Anthony Klein, Tucson, AZ (US);
Henry Zheng Liu, Tucson, AZ (US);
Daniel James Winarski, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
To improve reliability for multi-layer media, a data stream U is received for recording to a multi-layer rotating storage medium, the data stream U comprising a sequence of data bits. Each data bit U(J) is encoded into X representation bits. A first representation bit B(,J) is recorded onto a first layer of the storage media, the second representation bit B(,J) is recorded onto a second layer of the storage media, etc. When a request to read the recorded data U from the storage media is subsequently received, a plurality of the X representation bits are read back from the storage media and are decoded into the original data bit U(J). One embodiment employs a convolution encoding algorithm and PRML decoding algorithm. Another embodiment employs Reed Solomon encoding/decoding.