Coded data generation or conversion – Digital code to digital code converters – To or from run length limited codes
Reexamination Certificate
2007-07-17
2007-07-17
Mai, Lam T. (Department: 2819)
Coded data generation or conversion
Digital code to digital code converters
To or from run length limited codes
C341S050000
Reexamination Certificate
active
11280435
ABSTRACT:
Embodiments of the invention a signal processing method capable of realizing low decoding error ratio by using a simple configuration free from unnecessary redundant bits. In one embodiment, user data (512 bytes+additional data) input to an input terminal is RLL-encoded by a RLL encoder1. The data from the RLL encoder—1is entered into a symbol error correction encoder where 9-bit symbol encoding is done. Its RS code portion is RLL-encoded by a RLL encoder—2. Signal read from a magnetic disk is entered into a RLL decoder—2where the RS code portion is RLL-decoded. The signal from the RLL decoder—2is then entered into a symbol error correction decoder where random read/write errors, burst errors attributable to defects and other errors are corrected to produce a (user data+RLL) signal. This data is output to an output terminal after being decoded by a RLL decoder—1.
REFERENCES:
patent: 6631490 (2003-10-01), Shimoda
patent: 6694477 (2004-02-01), Lee
patent: 6757122 (2004-06-01), Kuznetsov et al.
patent: 6933865 (2005-08-01), Kuznetsov et al.
patent: 11-007736 (1999-01-01), None
Itou Yasuyuki
Izumita Morishi
Kondou Masaharu
Takashi Terumi
Duncan Patrick
Hitachi Global Storage Technologies - Netherlands B.V.
Mai Lam T.
Townsend and Townsend / and Crew LLP
LandOfFree
Data processing method and circuit for data recording and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Data processing method and circuit for data recording and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data processing method and circuit for data recording and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3785942