Takehiko Umeyama

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Semiconductor integrated circuit and operating method thereof
- Patent number 9,252,750
- Issue date Feb 2, 2016
- Renesas Electronics Corporation
- Takehiko Umeyama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Device for driving a piezoelectric element
- Patent number 8,786,162
- Issue date Jul 22, 2014
- Renesas Electronics Corporation
- Shingo Tajima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Driving circuit for and semiconductor device for driving laser diode
- Patent number 8,344,654
- Issue date Jan 1, 2013
- Renesas Electronics Corporation
- Tsuyoshi Horiuchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Driving circuit for and semiconductor device for driving laser diode
- Patent number 8,098,023
- Issue date Jan 17, 2012
- Renesas Electronics Corporation
- Tsuyoshi Horiuchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Optical disk apparatus, signal processing semiconductor integrated...
- Patent number 8,064,300
- Issue date Nov 22, 2011
- Renesas Electronics Corporation
- Hiroshi Abe
- G11 - INFORMATION STORAGE
Information Patent Grant
Driving circuit for and semiconductor device for driving laser diode
- Patent number 7,791,288
- Issue date Sep 7, 2010
- Renesas Technology Corp.
- Tsuyoshi Horiuchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 7,643,261
- Issue date Jan 5, 2010
- Renesas Technology Corp.
- Hiroshi Ide
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Driving circuit for and semiconductor device for driving laser diode
- Patent number 7,372,882
- Issue date May 13, 2008
- Renesas Technology Corp.
- Tsuyoshi Horiuchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Differential magneto-resistive head pre-amplifiers for single polar...
- Patent number 7,187,513
- Issue date Mar 6, 2007
- Renesas Technology America, Inc.
- Takehiko Umeyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Pulse current generation circuit
- Patent number 6,998,733
- Issue date Feb 14, 2006
- Renesas Technology Corp.
- Taiji Kabayama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Device for measuring temperature of semiconductor integrated circuit
- Patent number 6,783,274
- Issue date Aug 31, 2004
- Renesas Technology Corp.
- Takehiko Umeyama
- G01 - MEASURING TESTING
Information Patent Grant
Magnetic recording writing circuit
- Patent number 6,731,449
- Issue date May 4, 2004
- Renesas Technology Corp.
- Yasuhiro Okazaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Current driver circuit for supplying write current to a write head...
- Patent number 6,683,487
- Issue date Jan 27, 2004
- Mitsubishi Denki Kabushiki Kaisha
- Toru Takeuchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Method of and apparatus for optical information reproduction
- Patent number 6,339,567
- Issue date Jan 15, 2002
- Mitsubishi Denki Kabushiki Kaisha
- Masayoshi Shimamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Optical information reproduction device and signal processing circu...
- Patent number 6,320,830
- Issue date Nov 20, 2001
- Mitsubishi Denki Kabushiki Kaisha
- Manabu Tsukamoto
- G11 - INFORMATION STORAGE
Information Patent Grant
Differential amplifier circuit
- Patent number 6,252,457
- Issue date Jun 26, 2001
- Mitsubishi Denki Kabushiki Kaisha
- Takehiko Umeyama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Magneto-resistive element signal amplifying circuit
- Patent number 6,222,415
- Issue date Apr 24, 2001
- Mitsubishi Denki Kabushiki Kaisha
- Takehiko Umeyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Signal amplifying circuit for magnetoresistive element
- Patent number 6,211,736
- Issue date Apr 3, 2001
- Mitsubishi Denki Kabushiki Kaisha
- Toru Takeuchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Signal amplifying circuit for an MR element
- Patent number 6,208,482
- Issue date Mar 27, 2001
- Mitsubishi Denki Kabushiki Kaisha
- Yukihiro Araya
- B82 - NANO-TECHNOLOGY
Information Patent Grant
Write current driving circuit
- Patent number 6,201,421
- Issue date Mar 13, 2001
- Mitsubishi Denki Kabushiki Kaisha
- Toru Takeuchi
- G11 - INFORMATION STORAGE
Information Patent Grant
Amplifier with capacitive feedback for driving a magneto-resistive...
- Patent number 5,986,840
- Issue date Nov 16, 1999
- Mitsubishi Denki Kabushiki Kaisha
- Masashige Tada
- G11 - INFORMATION STORAGE
Information Patent Grant
Amplifier circuit suppressing disturbance signal produced by magnet...
- Patent number 5,852,521
- Issue date Dec 22, 1998
- Mitsubishi Denki Kabushiki Kaisha
- Takehiko Umeyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Circuit for processing signals from a magneto-resistive head
- Patent number 5,834,969
- Issue date Nov 10, 1998
- Mitsubishi Denki Kabushiki Kaisha
- Takehiko Umeyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Current switching circuit formed in an integrated semiconductor cir...
- Patent number 5,812,011
- Issue date Sep 22, 1998
- Mitsubishi Denki Kabushiki Kaisha
- Yutaka Hayashi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Single end input high frequency amplifier
- Patent number 5,694,083
- Issue date Dec 2, 1997
- Mitsubishi Denki Kabushiki Kaisha
- Takehiko Umeyama
- G11 - INFORMATION STORAGE
Information Patent Grant
Current control circuit of ring oscillator
- Patent number 5,568,103
- Issue date Oct 22, 1996
- Mitsubishi Electric Engineering Co., Ltd.
- Teruya Nakashima
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Polarity detector
- Patent number 5,557,220
- Issue date Sep 17, 1996
- Mitsubishi Denki Kabushiki Kaisha
- Yukihiro Araya
- G01 - MEASURING TESTING
Information Patent Grant
Differential amplifier for reducing input capacitance without deter...
- Patent number 5,453,718
- Issue date Sep 26, 1995
- Mitsubishi Denki Kabushiki Kaisha
- Katuyuki Kurokawa
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Active filter circuit
- Patent number 5,311,141
- Issue date May 10, 1994
- Mitsubishi Denki Kabushiki Kaisha
- Takehiko Umeyama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Semiconductor integrated circuit
- Patent number 5,302,892
- Issue date Apr 12, 1994
- Mitsubishi Denki Kabushiki Kaisha
- Masashige Tada
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
SEMICONDUCTOR INTEGRATED CIRCUIT AND OPERATING METHOD THEREOF
- Publication number 20160134159
- Publication date May 12, 2016
- RENESAS ELECTRONICS CORPORATION
- Takehiko Umeyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SEMICONDUCTOR INTEGRATED CIRCUIT AND OPERATING METHOD THEREOF
- Publication number 20140346878
- Publication date Nov 27, 2014
- RENESAS ELECTRONICS CORPORATION
- Takehiko Umeyama
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
DEVICE FOR DRIVING A PIEZOELECTRIC ELEMENT
- Publication number 20120212099
- Publication date Aug 23, 2012
- Renesas Electronics Corporation
- Shingo TAJIMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DRIVING CIRCUIT FOR AND SEMICONDUCTOR DEVICE FOR DRIVING LASER DIODE
- Publication number 20120081021
- Publication date Apr 5, 2012
- Renesas Electonics Corporation
- Tsuyoshi Horiuchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DRIVING CIRCUIT FOR AND SEMICONDUCTOR DEVICE FOR DRIVING LASER DIODE
- Publication number 20100295461
- Publication date Nov 25, 2010
- Renesas Technology Corp.
- Tsuyoshi Horiuchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTICAL DISK APPARATUS, SIGNAL PROCESSING SEMICONDUCTOR INTEGRATED...
- Publication number 20090147633
- Publication date Jun 11, 2009
- Hiroshi Abe
- G11 - INFORMATION STORAGE
Information Patent Application
Driving circuit for and semiconductor device for driving laser diode
- Publication number 20080272708
- Publication date Nov 6, 2008
- Renesas Technology Corp.
- Tsuyoshi Horiuchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SEMICONDUCTOR DEVICE
- Publication number 20070177328
- Publication date Aug 2, 2007
- Hiroshi IDE
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Driving circuit for and semiconductor device for driving laser diode
- Publication number 20050243879
- Publication date Nov 3, 2005
- Renesas Technology Corp.
- Tsuyoshi Horiuchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DEVICE FOR MEASURING TEMPERATURE OF SEMICONDUCTOR INTEGRATED CIRCUIT
- Publication number 20040081224
- Publication date Apr 29, 2004
- Mitsubishi Denki Kabushiki Kaisha
- Takehiko Umeyama
- G01 - MEASURING TESTING
Information Patent Application
Differential magneto-resistive head pre-amplifiers for single polar...
- Publication number 20030231419
- Publication date Dec 18, 2003
- Takehiko Umeyama
- G11 - INFORMATION STORAGE
Information Patent Application
Pulse current generation circuit
- Publication number 20030210084
- Publication date Nov 13, 2003
- Mitsubishi Denki Kabushiki Kaisha
- Taiji Kabayama
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
CURRENT DRIVER CIRCUIT FOR SUPPLYING WRITE CURRENT TO A WRITE HEAD...
- Publication number 20030160640
- Publication date Aug 28, 2003
- Mitsubishi Denki Kabushiki Kaisha
- Toru Takeuchi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Current bias circuit used in magnetic-signal detection head
- Publication number 20020181135
- Publication date Dec 5, 2002
- Mitsubishi Denki Kabushiki Kaisha
- Toru Takeuchi
- G11 - INFORMATION STORAGE
Information Patent Application
Magnetic record writing circuit
- Publication number 20020105747
- Publication date Aug 8, 2002
- Yasuhiro Okazaki
- G11 - INFORMATION STORAGE

Takehiko Umeyama

Person

Patents Grantslast 30 patents

Semiconductor integrated circuit and operating method thereof

Device for driving a piezoelectric element

Driving circuit for and semiconductor device for driving laser diode

Driving circuit for and semiconductor device for driving laser diode

Optical disk apparatus, signal processing semiconductor integrated...

Driving circuit for and semiconductor device for driving laser diode

Semiconductor device

Driving circuit for and semiconductor device for driving laser diode

Differential magneto-resistive head pre-amplifiers for single polar...

Pulse current generation circuit

Device for measuring temperature of semiconductor integrated circuit

Magnetic recording writing circuit

Current driver circuit for supplying write current to a write head...

Method of and apparatus for optical information reproduction

Optical information reproduction device and signal processing circu...

Differential amplifier circuit

Magneto-resistive element signal amplifying circuit

Signal amplifying circuit for magnetoresistive element

Signal amplifying circuit for an MR element

Write current driving circuit

Amplifier with capacitive feedback for driving a magneto-resistive...

Amplifier circuit suppressing disturbance signal produced by magnet...

Circuit for processing signals from a magneto-resistive head

Current switching circuit formed in an integrated semiconductor cir...

Single end input high frequency amplifier

Current control circuit of ring oscillator

Polarity detector

Differential amplifier for reducing input capacitance without deter...

Active filter circuit

Semiconductor integrated circuit

Patents Applicationslast 30 patents

SEMICONDUCTOR INTEGRATED CIRCUIT AND OPERATING METHOD THEREOF

SEMICONDUCTOR INTEGRATED CIRCUIT AND OPERATING METHOD THEREOF

DEVICE FOR DRIVING A PIEZOELECTRIC ELEMENT

DRIVING CIRCUIT FOR AND SEMICONDUCTOR DEVICE FOR DRIVING LASER DIODE

DRIVING CIRCUIT FOR AND SEMICONDUCTOR DEVICE FOR DRIVING LASER DIODE

OPTICAL DISK APPARATUS, SIGNAL PROCESSING SEMICONDUCTOR INTEGRATED...

Driving circuit for and semiconductor device for driving laser diode

SEMICONDUCTOR DEVICE

Driving circuit for and semiconductor device for driving laser diode

DEVICE FOR MEASURING TEMPERATURE OF SEMICONDUCTOR INTEGRATED CIRCUIT

Differential magneto-resistive head pre-amplifiers for single polar...

Pulse current generation circuit

CURRENT DRIVER CIRCUIT FOR SUPPLYING WRITE CURRENT TO A WRITE HEAD...

Current bias circuit used in magnetic-signal detection head

Magnetic record writing circuit