Toshihiko Ryu

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
One frequency repeater for a digital radio system
- Patent number 4,789,993
- Issue date Dec 6, 1988
- NEC Corporation
- Toshihiko Ryu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cross-polarization interference canceller
- Patent number 4,688,235
- Issue date Aug 18, 1987
- NEC Corporation
- Masato Tahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Multiple quadrature-phase amplitude modulating system capable of re...
- Patent number 4,675,619
- Issue date Jun 23, 1987
- NEC Corporation
- Junichi Uchibori
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Diversity system of selection type equipped with a code correction/...
- Patent number 4,663,768
- Issue date May 5, 1987
- NEC Corporation
- Toshihiko Ryu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Equalizer modifying a phase of a gain control signal to carry out e...
- Patent number 4,627,072
- Issue date Dec 2, 1986
- NEC Corporation
- Toshihiko Ryu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Cross-polarization distortion canceller for use in digital radio co...
- Patent number 4,575,862
- Issue date Mar 11, 1986
- NEC Corporation
- Masato Tahara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Quadrature amplitude demodulator comprising a combination of a full...
- Patent number 4,546,323
- Issue date Oct 8, 1985
- NEC Corporation
- Toshihiko Ryu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
8-Phase phase-shift keying demodulator
- Patent number 4,540,948
- Issue date Sep 10, 1985
- NEC Corporation
- Toshihiko Ryu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Adaptive equalizer system for quadrature amplitude modulation
- Patent number 4,453,256
- Issue date Jun 5, 1984
- Nippon Electric Co., Ltd.
- Toshihiko Ryu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Amplitude equalizer
- Patent number 4,333,063
- Issue date Jun 1, 1982
- Nippon Electric Co., Ltd.
- Toshihiko Ryu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Amplitude equalizer
- Patent number 4,258,340
- Issue date Mar 24, 1981
- Nippon Electric Co., Ltd.
- Toshihiko Ryu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Toshihiko Ryu

Person

Patents Grantslast 30 patents

One frequency repeater for a digital radio system

Cross-polarization interference canceller

Multiple quadrature-phase amplitude modulating system capable of re...

Diversity system of selection type equipped with a code correction/...

Equalizer modifying a phase of a gain control signal to carry out e...

Cross-polarization distortion canceller for use in digital radio co...

Quadrature amplitude demodulator comprising a combination of a full...

8-Phase phase-shift keying demodulator

Adaptive equalizer system for quadrature amplitude modulation

Amplitude equalizer

Amplitude equalizer