Title:
【発明の名称】mビット情報語のシーケンスを変調信号に変換する方法、記録担体を製造する方法、符号化装置、復号化装置、記録装置、読取り装置、信号及び記録担体
Document Type and Number:
Japanese Patent JP3467276
Kind Code:
B2
Abstract:
A sequence of m-bit information words is converted to a modulated binary signal. For each received information word from the sequence an n-bit code word is delivered. The delivered code words are converted to the modulated signal. When one of the code words is assigned to an information word to be converted, this code word is selected from a set of code words that depends on a coding state which is related to a digital sum value at the end of the modulated signal that corresponds to the previously delivered code word. From at least one of the digital sum values, a first or a second coding state of a pair of coding states of a first type is determined. Which of the two coding state of the pair is determined depends on the information word that corresponds to the previous delivered code word. The sets of code words belonging to the pairs of coding states of the first type contain no code word whatsoever in common. Because of this, the number of unique bit combinations that can be established by the code words in the sequence is increased.
Inventors:
Scourher Immink Cornelius Antoni
Application Number:
JP52554295A
Publication Date:
November 17, 2003
Filing Date:
March 21, 1995
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
G11B20/14; H03M5/14; H03M7/14; H03M7/20; H04L25/49; (IPC1-7): H03M7/14; G11B20/14; H04L25/49
Domestic Patent References:
| JP1181330A | ||||
| JP1205629A | ||||
| JP6485427A | ||||
| JP1175323A | ||||
| JP5619506A |
Attorney, Agent or Firm:
Masao Sawada