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Dive into the research topics where Yohei Umezawa is active.

Publication


Featured researches published by Yohei Umezawa.


Archive | 2008

SERVER, ADVERTISEMENT DISTRIBUTION METHOD, AND PROGRAM

Yohei Umezawa


Archive | 2005

Portable-type communication terminal device, contents output method, distribution server and method thereof, and contents supply system and supply method thereof

Yohei Umezawa; Yoshio Nitta; Katsuhiko Okamoto; Hiroaki Hattori; Minako Miyamoto


Archive | 2003

Optimum route calculation method and storage medium which stores optimum route calculation program

Yohei Umezawa


Archive | 2003

MOBILE COMMUNICATION SYSTEM, MANAGEMENT SERVER AND MOBILE COMMUNICATION METHOD

Yoshio Nitta; Yohei Umezawa; 義雄 新田; 陽平 梅澤


Archive | 2006

Communication method and commmunication system

Yohei Umezawa; Yasushi Toda


Archive | 2004

Mobile communication system, control server and mobile communication method

Yohei Umezawa; Yoshio Nitta


Archive | 2006

Communication system, device, and program

Yohei Umezawa; Yasushi Toda


Archive | 2005

Communication system and equipment and program

Yasushi Toda; Yohei Umezawa; 靖 戸田; 陽平 梅澤


Archive | 2006

Communication system, device and program for exchanging messages between members of cyber communities

Yohei Umezawa; Yasushi Toda


Archive | 2005

Communication device and related content output method and supply system, distribution server and method

Yohei Umezawa; Yoshio Nitta; Katsuhiko Okamoto; Hiroaki Hattori; Minako Miyamoto

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