Title:
変調コードシステム及び信号の符号化及び復号方法
Document Type and Number:
Japanese Patent JP2007533053
Kind Code:
A
Abstract:
The invention relates to a modulation code system and methods of encoding and decoding a signal to be used for data transmission or data storage. Such systems comprise an encoder ( 100 ) for transforming an original signal s into an encoded signal c satisfying predefined second constraints before said signal being transmitted via a channel ( 300 ). Such modulation code systems further comprise a decoder ( 200 ) for decoding the encoded signal c, after restoration, back into the original signal s. It is the object of the invention to improve such known systems and methods in such a way that they require less hardware. This object is achieved according to the invention in that the encoder ( 100 ) comprises a modulation encoder ( 110 ) transforming the original signal s into an intermediate signal t satisfying predefined first constraints and a transformer encoder ( 120 ) for transforming the intermediate signal t into the encoded signal c. The object is further achieved in such a way that the decoder ( 200 ) comprises a transformer decoder ( 220 ) for re-transforming the encoded signal c into said intermediate signal t and a modulation code decoder ( 210 ) for decoding that intermediate signal t into said original signal s.
Inventors:
Hendrik Day El Hallman
Johannes Waym Bergmanns
Johannes Waym Bergmanns
Application Number:
JP2007506892A
Publication Date:
November 15, 2007
Filing Date:
April 01, 2005
Export Citation:
Assignee:
Koninklijke Philips Electronics N.V.
International Classes:
G11B20/14; G11B20/10; H03M5/14; H03M7/30
Attorney, Agent or Firm:
Tadahiko Ito
Kosaku Sugimura
Shiro Fujitani
Kiyoshi Kuruma
Yoshiyuki Iwasa
Kosaku Sugimura
Shiro Fujitani
Kiyoshi Kuruma
Yoshiyuki Iwasa