Patent Number: 7,738,201

Title: Read error recovery using soft information

Abstract: In general, this disclosure describes read recovery techniques for data storage devices that use soft information associated with multiple read operations to detect data. Specifically, the read recovery techniques comprise computing soft information for each bit detected during a first read operation of a data storage medium, computing soft information for each bit detected during a second read operation of the data storage medium and averaging the soft information computed during the first and second read operations to determine the value of each of the bits.

Inventors: Jin; Ming (Lake Forest, CA), Kee; Hiau Choon (Singapore, SG), Ngwe; Myint (Singapore, SG), Li; Liu (Singapore, SG)

Assignee: Seagate Technology LLC

International Classification: G11B 5/09 (20060101); G11B 20/10 (20060101)

Expiration Date: 2022-06-15 0:00:00