Coded data generation or conversion – Digital code to digital code converters – To or from run length limited codes
Reexamination Certificate
2006-08-29
2006-08-29
Jeanglaude, Jean Bruner (Department: 2819)
Coded data generation or conversion
Digital code to digital code converters
To or from run length limited codes
C375S253000
Reexamination Certificate
active
07098819
ABSTRACT:
A DSV control bit determining/inserting unit inserts DSV control bits for execution of DSV control into an input data string and outputs the data string including the DSV control bits to a modulation unit. This modulation unit converts the data string with a basic data length of 2 bits into variable length code with a basic code length of 3 bits in accordance with a conversion table and outputs the code resulting from the conversion to a NRZI encoding unit. The conversion table used by the modulation unit includes substitution codes for limiting the number of consecutive appearances of a minimum run to a predetermined value and substitution codes for keeping a run length limit. In addition, the conversion table enforces a conversion rule, according to which the remaineder of division of the “1” count of an element in a data string by 2 having a value of 0 or 1 shall always be equal to the remainder of division of the “1” count of an element in the code resulting from conversion of the data string by 2.
REFERENCES:
patent: 3773975 (1973-11-01), Koziol
patent: 5333126 (1994-07-01), Fukuda et al.
patent: 5477222 (1995-12-01), Kahlman
patent: 5659577 (1997-08-01), Ohishi
patent: 5881037 (1999-03-01), Tanaka et al.
patent: 5917857 (1999-06-01), Tanaka et al.
patent: 5978419 (1999-11-01), Cassiday et al.
patent: 6072756 (2000-06-01), Shigenobu
patent: 6079041 (2000-06-01), Kunisa et al.
patent: 6175318 (2001-01-01), Kahlman et al.
patent: 6198710 (2001-03-01), Hori et al.
patent: 6275175 (2001-08-01), Kahlman et al.
patent: 6496541 (2002-12-01), Kahlman et al.
patent: 0902544 (1999-03-01), None
patent: 0903864 (1999-03-01), None
Z. Keirn et al., “Experimental Performance Comparison of FDTS/DF Detectors, 8/9 (0,k) vs. 4/5 MTR Codes”, IEEE Transactions of Magnetics, vol. 33, No. 5, Sep. 1997, pp. 2731-2733.
J. Moon et al., “Maximum Transition Run Codes for Data Storage Systems”, IEEE Transactions on Magnetics, vol. 32, No. 5, Sep. 1996, pp. 3992-3994.
Kahlman Josephus A. H. M.
Nakagawa Toshiyuki
Nakamura Kosuke
Narahara Tatsuya
Schouhamer Immink Kornelis A.
Belk Michael E.
Jeanglaude Jean Bruner
Koninkijke Philips Electronics N.V.
LandOfFree
Modulation apparatus/method, demodulation apparatus/method... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Modulation apparatus/method, demodulation apparatus/method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modulation apparatus/method, demodulation apparatus/method... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3712252