Coded data generation or conversion – Digital code to digital code converters – To or from minimum d.c. level codes
Reexamination Certificate
2006-04-25
2006-04-25
Wamsley, Patrick (Department: 2819)
Coded data generation or conversion
Digital code to digital code converters
To or from minimum d.c. level codes
C341S059000, C341S102000
Reexamination Certificate
active
07034719
ABSTRACT:
In a data demodulating method and apparatus, and a code arranging method, a multiplexer multiplexes an input data stream divided by a predetermined length into a plurality of types of pseudo random data streams using multiplexed information of predetermined bits by applying a predetermined multiplexing method to each of the pseudo random data streams. An encoder RLL-modulates the plurality of types of pseudo random data streams to create a modulated code stream including a minimum of DC components. The multiplexer generates the random data streams by inconsecutively scrambling the input data stream using the multiplexed information. The encoder weak DC-free RLL-modulates each of the multiplexed data streams without using a DC control sub code conversion table to which additional bits are added and provides a code stream including a minimum of DC components among multiplexed, RLL-modulated code streams.
REFERENCES:
patent: 5742243 (1998-04-01), Moriyama
patent: 6002718 (1999-12-01), Roth
patent: 6177890 (2001-01-01), Keirn et al.
patent: 6225921 (2001-05-01), Kahlman et al.
patent: 6281815 (2001-08-01), Shim et al.
patent: 6324138 (2001-11-01), Hori et al
patent: 6441756 (2002-08-01), Shim
patent: 6604219 (2003-08-01), Lee et al.
patent: 0 343 930 (1989-11-01), None
patent: 1 047 197 (2000-10-01), None
patent: 1 187 335 (2002-03-01), None
patent: 1 251 641 (2002-10-01), None
patent: 10-1999-7003183 (1999-04-01), None
patent: 10-294893 (2001-04-01), None
patent: 2002-19674 (2002-03-01), None
U.S. Appl. No. 10/791,268, Shim et al□□filed on Mar. 3, 2004□□Published on Oct. 14, 2004□□.
Kees A. Schouhamer Immink; Codes for Mass Data Storage Systems; Chapter 13, 1999; pp. 261-278.
Kees A. Schouhamer Immink; Codes for Mass Data Storage Systems; Chapter 13, 1999; pp. 261-278, no month.
Search Report issued in European Patent Application No. 03256024.5 on Sep. 30, 2005.
Coene et al., “EFMCC: A New Combi-Code For High Density Optical Recording”,Proceedings Of The SPIE, SPIE, Bellingham, VA, US, vol. 4090, 2000, pp. 275-282, no month.
Kunisa, “Runlength Control Based On Guided Scrambling For Digital Magnetic Recording”,IEICE Transactions On Electronics, Institute Of Electronics Information And Comm. Eng. Tokyo, JP, vol. E82-C, No. 12, 1999, pp. 2209-2217, no month.
Jung Kiu-hae
Kim Jin-han
Shim Jae-seong
Stein, McEwen & Bui LLP
Wamsley Patrick
LandOfFree
Data modulating method and apparatus, data demodulating... 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 modulating method and apparatus, data demodulating..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data modulating method and apparatus, data demodulating... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3529391