Isao Nakagawa

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Gateway device and control method for communication with IP and IPV...
- Patent number 7,339,895
- Issue date Mar 4, 2008
- Hitachi, Ltd.
- Tomochika Ozaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Portable information processing apparatus
- Patent number 6,840,448
- Issue date Jan 11, 2005
- Hitachi, Ltd.
- Shinichiro Fukushima
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Method and apparatus for recording image information
- Patent number 6,657,666
- Issue date Dec 2, 2003
- Hitachi, Ltd.
- Seiji Imagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Digital signal transmission system with priority information forcin...
- Patent number 5,760,820
- Issue date Jun 2, 1998
- Hitachi, Ltd.
- Takanori Eda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for receiving wide/standard picture plane television signal
- Patent number 5,353,065
- Issue date Oct 4, 1994
- Hitachi, Ltd.
- Kenji Katsumata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image signal correction circuit and image signal processor using th...
- Patent number 5,249,037
- Issue date Sep 28, 1993
- Hitachi, Ltd.
- Masato Sugiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Processing circuit for a plurality of different TV signals
- Patent number 5,218,436
- Issue date Jun 8, 1993
- Hitachi, Ltd.
- Masato Sugiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Television signal recording/reproducing apparatus of color-under re...
- Patent number 5,016,111
- Issue date May 14, 1991
- Hitachi, Ltd.
- Toshiyuki Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Motion detecting circuit for video signal processing using correlat...
- Patent number 4,924,305
- Issue date May 8, 1990
- Hitachi, Ltd.
- Isao Nakagawa
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Digital signal processing circuit driven by a switched clock and us...
- Patent number 4,860,090
- Issue date Aug 22, 1989
- Hitachi, Ltd.
- Toshinori Murata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Sequential scanning converter with frame comb filter and freeze fra...
- Patent number 4,853,765
- Issue date Aug 1, 1989
- Hitachi, Ltd.
- Kenji Katsumata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Detection circuit for detecting standard television signals and non...
- Patent number 4,821,112
- Issue date Apr 11, 1989
- Hitachi, Ltd.
- Toshiyuki Sakamoto
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Movement detection circuit of a video signal used in a television r...
- Patent number 4,794,454
- Issue date Dec 27, 1988
- Hitachi, Ltd.
- Masato Sugiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Motion detector for chrominance signal in TV receiver
- Patent number 4,775,888
- Issue date Oct 4, 1988
- Hitachi, Ltd.
- Isao Nakagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
YC-signal separation circuit responsive to magnitude of vertical co...
- Patent number 4,754,322
- Issue date Jun 28, 1988
- Hitachi, Ltd.
- Akihide Okuda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Television signal processing circuit
- Patent number 4,739,390
- Issue date Apr 19, 1988
- Hitachi, Ltd.
- Masahiko Achiha
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Motion detector for chrominance signal in TV receiver
- Patent number 4,736,252
- Issue date Apr 5, 1988
- Hitachi, Ltd.
- Isao Nakagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Video signal processing circuit of motion adaptive type
- Patent number 4,733,297
- Issue date Mar 22, 1988
- Hitachi Ltd. & Hitachi Video Eng.
- Kenji Katsumata
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Contour signal correction circuit for television receiver
- Patent number 4,733,300
- Issue date Mar 22, 1988
- Hitachi, Ltd.
- Masato Sugiyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Separating circuit of luminance and chrominance signals for TV rece...
- Patent number 4,707,732
- Issue date Nov 17, 1987
- Hitachi, Ltd.
- Takaaki Matono
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electronic circuitry utilizing an inerted Darlington amplifier outp...
- Patent number 4,634,995
- Issue date Jan 6, 1987
- Hitachi, Ltd.
- Isao Nakagawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Automatic phase control color signal circuit for video tape recorde...
- Patent number 4,607,292
- Issue date Aug 19, 1986
- Hitachi, Ltd.
- Noboru Kojiam
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Filter circuit suitable for being fabricated into integrated circuit
- Patent number 4,456,885
- Issue date Jun 26, 1984
- Hitachi, Ltd.
- Isao Nakagawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Chrominance signal reproducing apparatus
- Patent number 4,405,937
- Issue date Sep 20, 1983
- Hitachi, Ltd.
- Mitsuru Kudo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Vertical synchronizing signal detector
- Patent number 4,291,335
- Issue date Sep 22, 1981
- Hitachi, Ltd.
- Isao Nakagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Phase comparator circuit with gated isolation circuit
- Patent number 4,242,602
- Issue date Dec 30, 1980
- Hitachi, Ltd.
- Isao Nakagawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Circuit arrangement for separating chrominance and luminance inform...
- Patent number 4,205,335
- Issue date May 27, 1980
- Hitachi, Ltd.
- Isao Nakagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Automatic ghost-suppression system
- Patent number 4,128,848
- Issue date Dec 5, 1978
- Hitachi, Ltd.
- Isao Nakagawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Information device, gateway device and control method
- Publication number 20040071148
- Publication date Apr 15, 2004
- Hitachi, Ltd
- Tomochika Ozaki
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Portable information processing apparatus
- Publication number 20040041025
- Publication date Mar 4, 2004
- Shinichiro Fukushima
- G06 - COMPUTING CALCULATING COUNTING

Isao Nakagawa

Person

Patents Grantslast 30 patents

Gateway device and control method for communication with IP and IPV...

Portable information processing apparatus

Method and apparatus for recording image information

Digital signal transmission system with priority information forcin...

Apparatus for receiving wide/standard picture plane television signal

Image signal correction circuit and image signal processor using th...

Processing circuit for a plurality of different TV signals

Television signal recording/reproducing apparatus of color-under re...

Motion detecting circuit for video signal processing using correlat...

Digital signal processing circuit driven by a switched clock and us...

Sequential scanning converter with frame comb filter and freeze fra...

Detection circuit for detecting standard television signals and non...

Movement detection circuit of a video signal used in a television r...

Motion detector for chrominance signal in TV receiver

YC-signal separation circuit responsive to magnitude of vertical co...

Television signal processing circuit

Motion detector for chrominance signal in TV receiver

Video signal processing circuit of motion adaptive type

Contour signal correction circuit for television receiver

Separating circuit of luminance and chrominance signals for TV rece...

Electronic circuitry utilizing an inerted Darlington amplifier outp...

Automatic phase control color signal circuit for video tape recorde...

Filter circuit suitable for being fabricated into integrated circuit

Chrominance signal reproducing apparatus

Vertical synchronizing signal detector

Phase comparator circuit with gated isolation circuit

Circuit arrangement for separating chrominance and luminance inform...

Automatic ghost-suppression system

Patents Applicationslast 30 patents

Information device, gateway device and control method

Portable information processing apparatus