Title:
情報ワードを信号に変換するシステム
Document Type and Number:
Japanese Patent JP4156523
Kind Code:
B2
Abstract:
A method of converting m-bit information words to a run-length constrained modulated signal includes converting the information words into n-bit code words. The available code words are distributed over at least one group (G 1 ) of a first type and at least one group (G 2 ) of a second type. The selection of a code word belonging to the group of the first or second type establishes a coding state of the first type (S 1 ) or one of a number r of coding states (S 2 , S 3 ) of the second type, depending on the current information word. For each information word, a subset of code words is available, this subset having at least one disjunct code word for each of the r coding states. The selection from the subset of the code word to be delivered is based the coding state, on dynamically verifying the run-length constraint for the sequence of code words, and on an additional criterion, like the low frequency content of the modulated signal.
Inventors:
Subhamel Imink, Cornelius
Application Number:
JP2003563100A
Publication Date:
September 24, 2008
Filing Date:
December 18, 2002
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
G11B20/14; H03M5/14; H03M7/14
Domestic Patent References:
| JP9512392A | ||||
| JP10508456A | ||||
| JP9288864A |
Attorney, Agent or Firm:
Tadahiko Ito
Shinsuke Onuki
Tadashige Ito
Shinsuke Onuki
Tadashige Ito
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