Method and apparatus for encoding and decoding a runout...

Details Method and apparatus for encoding and decoding a runout... Method and apparatus for encoding and decoding a runout...

2007-03-20

2007-03-20

Tzeng, Fred F. (Department: 2627)

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Reexamination Certificate

active

11034133

ABSTRACT:
One or more bits are added to the embedded repeatable runout correction (ERRC) bit pattern of a servo field so that errors in ERRC bit patterns can be detected and in certain cases corrected. If four bits are added, a single bit error in an ERRC bit pattern can be detected and corrected. If five bits are added, two bit errors in the ERRC bit pattern can be detected. In accordance with the preferred embodiment, the invention uses a single encode table and a single decode table to encode the ERRC pattern to be written to the disk and to decode the ERRC pattern read back from the disk.

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