Method of detecting error event in codeword reproduced by...

Details Method of detecting error event in codeword reproduced by... Method of detecting error event in codeword reproduced by...

2005-10-05

2010-11-02

Baderman, Scott T (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Digital data error correction

Reexamination Certificate

active

07827470

ABSTRACT:
Apparatuses and methods for detecting error events in a codeword reproduced by perpendicular magnetic recording medium (PMR. The method includes: generating cyclic redundancy check (CRC) parity bits based on a generator polynomial for a source information sequence to be recorded on PMR medium and recording a codeword in which the generated CRC parity bits are added to the source information sequence; and reading the recorded codeword and an error event in the read codeword. It is possible to detect error events when a codeword recorded by PMR is read, using a small number of bits.

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Feng, W., et al., “On the Performance of Parity Codes in Magnetic Recording Systems”, Global Telecommunications Conference, 2000. GLOBECOM '00. IEEE, Nov. 2000 p. 1877-1881 vol. 3, Marvell Semiconductor, Inc., Sunnyvale, CA.

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