Akira Toyama

Person

Chigasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Clock recovery apparatus
- Patent number 7,965,800
- Issue date Jun 21, 2011
- Yokogawa Electric Corporation
- Hiroshi Sugawara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Light modulating apparatus
- Patent number 7,672,033
- Issue date Mar 2, 2010
- Yokogawa Electric Corporation
- Toshiaki Kobayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Clock reproducing apparatus
- Patent number 7,667,544
- Issue date Feb 23, 2010
- Yokogawa Electric Corporation
- Hiroshi Sugawara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Repeater and optical communication system
- Patent number 7,580,641
- Issue date Aug 25, 2009
- Yokogawa Electric Corporation
- Hiroshi Shimizu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Pulse pattern generating apparatus
- Patent number 7,522,660
- Issue date Apr 21, 2009
- Yokogawa Electric Corporation
- Chie Sato
- G01 - MEASURING TESTING
Information Patent Grant
Frequency synthesizer, pulse train generation apparatus and pulse t...
- Patent number 7,496,169
- Issue date Feb 24, 2009
- Nippon Precision Circuits Inc.
- Kaoru Kanehachi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Light modulation apparatus and light modulator control method
- Patent number 7,245,413
- Issue date Jul 17, 2007
- Yokogawa Electric Corporation
- Akira Miura
- G02 - OPTICS
Information Patent Grant
Inspection apparatus
- Patent number 7,243,033
- Issue date Jul 10, 2007
- Yokogawa Electric Corporation
- Chie Sato
- G01 - MEASURING TESTING
Information Patent Grant
Decimation filter
- Patent number 7,069,285
- Issue date Jun 27, 2006
- Nippon Precision Circuits Inc.
- Hiroyuki Kawanishi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Fractional-N frequency synthesizer and method of operating the same
- Patent number 6,670,854
- Issue date Dec 30, 2003
- Nippon Precision Circuits Inc.
- Minoru Takeda
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Noise shaper
- Patent number 6,515,601
- Issue date Feb 4, 2003
- Nippon Precision Circuits Inc.
- Yukio Fukuhara
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Delta sigma D/A converter
- Patent number 6,369,731
- Issue date Apr 9, 2002
- Nippon Precision Circuits Inc.
- Minoru Takeda
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Delta-sigma D/A converter
- Patent number 6,292,124
- Issue date Sep 18, 2001
- Nippon Precision Circuits, Inc.
- Yoshihiro Hanada
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Digital data processing circuit and digital data processing method
- Patent number 6,041,291
- Issue date Mar 21, 2000
- Nippon Precision Circuits, Inc.
- Motohiro Yamazaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Waveform data compression apparatus
- Patent number 5,727,085
- Issue date Mar 10, 1998
- Nippon Precision Circuits Inc.
- Akira Toyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Timing generator for testing IC
- Patent number 5,703,515
- Issue date Dec 30, 1997
- Yokogawa Electric Corporation
- Akira Toyama
- G01 - MEASURING TESTING
Information Patent Grant
Apparatus for reproducing digital audio waveform data
- Patent number 5,659,317
- Issue date Aug 19, 1997
- Nippon Precision Circuits Inc.
- Akira Toyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Timing signal generator
- Patent number 5,592,659
- Issue date Jan 7, 1997
- Yokogawa Electric Corporation
- Akira Toyama
- G01 - MEASURING TESTING
Information Patent Grant
Serial-to-parallel multiplier
- Patent number 5,528,531
- Issue date Jun 18, 1996
- Nippon Precision Circuits Inc.
- Akira Toyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Resistor array circuit device and variable gain device utilizing same
- Patent number 5,523,712
- Issue date Jun 4, 1996
- Nippon Precision Circuits Inc.
- Satoru Miyabe
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Sampling rate converter
- Patent number 5,481,267
- Issue date Jan 2, 1996
- Nippon Precision Circuits Inc.
- Satoru Miyabe
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Sampling rate converter
- Patent number 5,398,029
- Issue date Mar 14, 1995
- Nippon Precision Circuits Inc.
- Akira Toyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Constant width pulse distribution in a digital to analog converter...
- Patent number 4,929,947
- Issue date May 29, 1990
- Nippon Precision Circuits Ltd.
- Akira Toyama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
D/A converter
- Patent number 4,864,305
- Issue date Sep 5, 1989
- Seikosha Co., Ltd.
- Akira Toyama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Color television receiver
- Patent number 4,232,332
- Issue date Nov 4, 1980
- Sony Corporation
- Akira Toyama
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
CLOCK REPRODUCING APPARATUS
- Publication number 20100066456
- Publication date Mar 18, 2010
- YOKOGAWA ELECTRIC CORPORATION
- Hiroshi SUGAWARA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
A/D CONVERTER
- Publication number 20100060502
- Publication date Mar 11, 2010
- YOKOGAWA ELECTRIC CORPORATION
- Akira Toyama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
CLOCK RECOVERY APPARATUS
- Publication number 20080205564
- Publication date Aug 28, 2008
- YOKOGAWA ELECTRIC CORPORATION
- Hiroshi SUGAWARA
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Light modulating apparatus
- Publication number 20070177252
- Publication date Aug 2, 2007
- YOKOGAWA ELECTRIC CORPORATION
- Toshiaki Kobayashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Clock reproducing apparatus
- Publication number 20070159938
- Publication date Jul 12, 2007
- Yokogawa Electric Corporation
- Hiroshi Sugawara
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Light modulation apparatus and light modulator control method
- Publication number 20070070488
- Publication date Mar 29, 2007
- YOKOGAWA ELECTRIC CORPORATION
- Akira Miura
- G02 - OPTICS
Information Patent Application
Repeater and optical communication system
- Publication number 20070047956
- Publication date Mar 1, 2007
- YOKOGAWA ELECTRIC CORPORATION
- Hiroshi Shimizu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Frequency synthesizer, pulse train generation apparatus and pulse t...
- Publication number 20060056565
- Publication date Mar 16, 2006
- Kaoru Kanehachi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Inspection apparatus
- Publication number 20060025708
- Publication date Feb 2, 2006
- YOKOGAWA ELECTRIC CORPORATION
- Chie Sato
- G01 - MEASURING TESTING
Information Patent Application
Pulse pattern generating apparatus
- Publication number 20050058190
- Publication date Mar 17, 2005
- Yokogawa Electric Corporation
- Chie Sato
- G01 - MEASURING TESTING
Information Patent Application
Fractional-N frequency synthesizer and method of operating the same
- Publication number 20030025565
- Publication date Feb 6, 2003
- Minoru Takeda
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Decimation filter
- Publication number 20020143833
- Publication date Oct 3, 2002
- Hiroyuki Kawanishi
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Noise shaper
- Publication number 20020041243
- Publication date Apr 11, 2002
- Yukio Fukuhara
- H03 - BASIC ELECTRONIC CIRCUITRY

Akira Toyama

Person

Patents Grantslast 30 patents

Clock recovery apparatus

Light modulating apparatus

Clock reproducing apparatus

Repeater and optical communication system

Pulse pattern generating apparatus

Frequency synthesizer, pulse train generation apparatus and pulse t...

Light modulation apparatus and light modulator control method

Inspection apparatus

Decimation filter

Fractional-N frequency synthesizer and method of operating the same

Noise shaper

Delta sigma D/A converter

Delta-sigma D/A converter

Digital data processing circuit and digital data processing method

Waveform data compression apparatus

Timing generator for testing IC

Apparatus for reproducing digital audio waveform data

Timing signal generator

Serial-to-parallel multiplier

Resistor array circuit device and variable gain device utilizing same

Sampling rate converter

Sampling rate converter

Constant width pulse distribution in a digital to analog converter...

D/A converter

Color television receiver

Patents Applicationslast 30 patents

CLOCK REPRODUCING APPARATUS

A/D CONVERTER

CLOCK RECOVERY APPARATUS

Light modulating apparatus

Clock reproducing apparatus

Light modulation apparatus and light modulator control method

Repeater and optical communication system

Frequency synthesizer, pulse train generation apparatus and pulse t...

Inspection apparatus

Pulse pattern generating apparatus

Fractional-N frequency synthesizer and method of operating the same

Decimation filter

Noise shaper