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Koji Hirayama

Hitachi

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Publication

Featured researches published by Koji Hirayama.

Archive | 1999

Mobil communication system for providing IP packet communications and method for routing IP packets

Mika Mizutani; Susumu Matsui; Toshiya Ouchi; Haruo Shibata; Koji Hirayama; Keisuke Shirai

Archive | 2002

Wireless base station, packet repeater, and wireless communication system

Hideo Aoe; Koji Hirayama; Shuichi Miyazaki; Shuichi Ozawa; Kiyohiko Yoshida; 清彦 吉田; 秀一 宮崎; 修一 小沢; 浩二 平山; 英夫 青江

Archive | 2000

Communication system, a communication method and communication terminal

Koji Tanaka; Masahiro Hayashi; Koji Hirayama; Haruo Shibata

Archive | 1998

Method of switching busy line in mobile communication network

Koji Hirayama; Tsutomu Kusaki; Keisuke Shirai

Archive | 2000

Switching system and switching control method

Koji Hirayama; Haruo Shibata; Akio Kawase; Shinichi Iwaki

Archive | 1998

Mobile communication system, mobile terminal, packet gateway and ip packet routing method

Koji Hirayama; Susumu Matsui; Mika Mizutani; Toshiya Ouchi; Jiro Shibata; Keisuke Shirai; 敏哉 大内; 浩二 平山; 進 松井; 治朗 柴田; 美加 水谷; 啓介 白井

Archive | 2011

DIGITAL SIGNAGE SYSTEM AND IMAGE DISPLAY CONTROL METHOD

Koji Hirayama

Archive | 2000

Device and method for collecting and providing information

Koji Hirayama; Tomohiro Hotta; Koji Tanaka; 智洋 堀田; 浩二 平山; 宏司 田中

Archive | 2010

COMMUNICATION CHANNEL SWITCH

Koji Hirayama

Archive | 1998

Communication connection switching method and communication connection switching device

Koji Hirayama; Tsutomu Kusaki; Jiro Shibata; Keisuke Shirai; 浩二 平山; 治朗 柴田; 啓介 白井; 務 草木

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Keisuke Shirai

Hitachi

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Haruo Shibata

Hitachi

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Mika Mizutani

Hitachi

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Susumu Matsui

Hitachi

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Toshiya Ouchi

Hitachi

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Koji Tanaka

Hitachi

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Tsutomu Kusaki

Hitachi

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Akio Kawase

Hitachi

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Masahiro Hayashi

Hitachi

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Shinichi Iwaki

Hitachi

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