Shinobu Eikawa

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Yamato, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method for embedding information and extracting the same
- Patent number 7,065,226
- Issue date Jun 20, 2006
- Hitachi, Ltd.
- Kousuke Anzai
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Digital watermark data embedding method, and digital watermark data...
- Patent number 7,047,412
- Issue date May 16, 2006
- Hitachi, Ltd.
- Isao Echizen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Contents rendering control method, contents reproducing equipment,...
- Patent number 6,865,677
- Issue date Mar 8, 2005
- Hitachi, Ltd.
- Isao Echizen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Steganographic system, method, program and storage medium therefor
- Patent number 6,707,927
- Issue date Mar 16, 2004
- Hitachi, Ltd.
- Kazumasa Kita
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Digital watermark data embedding method, and digital watermark data...
- Publication number 20020007403
- Publication date Jan 17, 2002
- Isao Echizen
- G06 - COMPUTING CALCULATING COUNTING