Masahiro Koya

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Kodaira, JP

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Patents Grantslast 30 patents

Information Patent Grant
Traffic channel assignment based on traffic density and signal quality
- Patent number 5,903,843
- Issue date May 11, 1999
- Hitachi, Ltd.
- Hideya Suzuki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Soft decision maximum likelihood decoding method with adaptive metric
- Patent number 5,566,191
- Issue date Oct 15, 1996
- Hitachi, Ltd.
- Makoto Ohnishi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Communication network system and method of controlling a communicat...
- Patent number 5,042,027
- Issue date Aug 20, 1991
- Hitachi, Ltd.
- Akihiko Takase
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Portable wireless communication systems
- Patent number 4,881,271
- Issue date Nov 14, 1989
- Hitachi, Ltd.
- Yukiji Yamauchi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive digital filter for eliminating howling
- Patent number 4,752,903
- Issue date Jun 21, 1988
- Hitachi Densi Kabushiki Kaisha
- Yoshihiro Iwata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Signal processing system having impulse response detecting circuit
- Patent number 4,441,192
- Issue date Apr 3, 1984
- Hitachi, Ltd.
- Yasuhiro Kita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE