Takaaki Yamada

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Dynamic image content tamper detecting device and system
- Patent number 8,285,998
- Issue date Oct 9, 2012
- Hitachi Government & Public Corporation System Engineering, Ltd.
- Isao Echizen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System and method for controlling contents by plurality of pieces o...
- Patent number 7,577,843
- Issue date Aug 18, 2009
- Hitachi, Ltd.
- Isao Echizen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Information presentation apparatus and information presentation method
- Patent number 6,366,909
- Issue date Apr 2, 2002
- Hitachi, Ltd.
- Toshiyuki Yuasa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Map application system
- Patent number 6,208,935
- Issue date Mar 27, 2001
- Hitachi, Ltd.
- Takaaki Yamada
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Computer assisted learning support system and processing method the...
- Patent number 5,211,563
- Issue date May 18, 1993
- Hitachi, Ltd.
- Hirohide Haga
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
DYNAMIC IMAGE CONTENT TAMPER DETECTING DEVICE AND SYSTEM
- Publication number 20100146282
- Publication date Jun 10, 2010
- Isao Echizen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Contents Data, and Program, Apparatus and Method for Detecting and...
- Publication number 20090249491
- Publication date Oct 1, 2009
- Nobuharu Miura
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
System and method for controlling contents by plurality of pieces o...
- Publication number 20050120218
- Publication date Jun 2, 2005
- Isao Echizen
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Watermarking application system for broadcast contents copyright pr...
- Publication number 20040025023
- Publication date Feb 5, 2004
- Takaaki Yamada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE