Patents by Inventor Genichiro Oga

Genichiro Oga has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11200834
    Abstract: A display apparatus includes pixels arranged in a two-dimensional matrix pattern, each of which including a light-emitting unit and a drive circuit that drives the unit and includes a comparator circuit that compares a control pulse with potential based on signal voltage and outputs predetermined voltage based on the result, a transistor driving the unit in response to the predetermined voltage, and a current source that supplies current to the unit during driving of the transistor, includes a current-source transistor, a capacity unit connected to a gate electrode of the current-source transistor, a differential amplifier that detects a differential between voltage based on reference constant current and reference voltage, and a transistor controlling the voltage based on reference constant current depending on current flowing through the current-source transistor, and controls gate potential of the current-source transistor on the basis of output of the amplifier in synchronization with a scanning signal.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: December 14, 2021
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
  • Patent number: 10255852
    Abstract: A comparator unit includes: a comparison section configured to compare a control pulse with an electric potential based on a signal voltage; and a control section configured to control, based on the control pulse, operation and non-operation of the comparison section.
    Type: Grant
    Filed: June 5, 2017
    Date of Patent: April 9, 2019
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
  • Patent number: 10002565
    Abstract: A display unit includes a pixel group having pixels. Each of the pixels includes a light emitting section and a drive circuit. The pixel group is divided into P pieces of pixel blocks. The display unit is configured to allow the light emitting sections from the light emitting sections configuring the respective pixels in a first pixel block of the P pieces of pixel blocks to the light emitting sections configuring the respective pixels in a P-th pixel block of the P pieces of pixel blocks to sequentially emit light together on a pixel block basis, and when the light emitting sections configuring the respective pixels in pixel blocks of the P pieces of pixel blocks emit light, configured to allow the light emitting sections configuring the respective pixels in remaining pixel blocks of the P pieces of pixel blocks not to emit light.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: June 19, 2018
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Ken Kikuchi, Takehiro Misonou, Genichiro Oga, Takahiro Kita, Takaaki Sugiyama, Eiji Nagasaka, Kenji Watanabe, Takayuki Kubota
  • Publication number: 20170270858
    Abstract: A comparator unit includes: a comparison section configured to compare a control pulse with an electric potential based on a signal voltage; and a control section configured to control, based on the control pulse, operation and non-operation of the comparison section.
    Type: Application
    Filed: June 5, 2017
    Publication date: September 21, 2017
    Inventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
  • Patent number: 9697766
    Abstract: A comparator unit includes: a comparison section configured to compare a control pulse with an electric potential based on a signal voltage; and a control section configured to control, based on the control pulse, operation and non-operation of the comparison section.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: July 4, 2017
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
  • Publication number: 20150339979
    Abstract: A display apparatus includes pixels arranged in a two-dimensional matrix pattern, each of which including a light-emitting unit and a drive circuit that drives the unit and includes a comparator circuit that compares a control pulse with potential based on signal voltage and outputs predetermined voltage based on the result, a transistor driving the unit in response to the predetermined voltage, and a current source that supplies current to the unit during driving of the transistor, includes a current-source transistor, a capacity unit connected to a gate electrode of the current-source transistor, a differential amplifier that detects a differential between voltage based on reference constant current and reference voltage, and a transistor controlling the voltage based on reference constant current depending on current flowing through the current-source transistor, and controls gate potential of the current-source transistor on the basis of output of the amplifier in synchronization with a scanning signal.
    Type: Application
    Filed: August 5, 2015
    Publication date: November 26, 2015
    Applicant: Sony Corporation
    Inventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
  • Patent number: 9159262
    Abstract: A display apparatus includes pixels arranged in a two-dimensional matrix pattern, each of which including a light-emitting unit and a drive circuit that drives the unit and includes a comparator circuit that compares a control pulse with potential based on signal voltage and outputs predetermined voltage based on the result, a transistor driving the unit in response to the predetermined voltage, and a current source that supplies current to the unit during driving of the transistor, includes a current-source transistor, a capacity unit connected to a gate electrode of the current-source transistor, a differential amplifier that detects a differential between voltage based on reference constant current and reference voltage, and a transistor controlling the voltage based on reference constant current depending on current flowing through the current-source transistor, and controls gate potential of the current-source transistor on the basis of output of the amplifier in synchronization with a scanning signal.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: October 13, 2015
    Assignee: Sony Corporation
    Inventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
  • Patent number: 8860709
    Abstract: A level converting circuit includes a level converting part and a bias part. The level converting part includes at least first to fourth n-type field effect transistors and first and second p-type field effect transistors. The bias part includes a fifth n-type field effect transistor, a voltage drop part including at least one resistive element, and a current source having a power-supply-side terminal connected to a voltage source of a voltage higher than a first voltage. The bias part generates a bias voltage higher than the first voltage by the threshold voltage of the first and second n-type field effect transistors or a bias voltage that is higher than the first voltage and lower than the threshold voltage at the side of one end of the resistive element, and supplies the bias voltage to the gates of the first and second n-type field effect transistors in the level converting part.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: October 14, 2014
    Assignee: Sony Corporation
    Inventors: Takaaki Sugiyama, Genichiro Oga
  • Publication number: 20140292745
    Abstract: A display apparatus includes pixels arranged in a two-dimensional matrix pattern, each of which including a light-emitting unit and a drive circuit that drives the unit and includes a comparator circuit that compares a control pulse with potential based on signal voltage and outputs predetermined voltage based on the result, a transistor driving the unit in response to the predetermined voltage, and a current source that supplies current to the unit during driving of the transistor, includes a current-source transistor, a capacity unit connected to a gate electrode of the current-source transistor, a differential amplifier that detects a differential between voltage based on reference constant current and reference voltage, and a transistor controlling the voltage based on reference constant current depending on current flowing through the current-source transistor, and controls gate potential of the current-source transistor on the basis of output of the amplifier in synchronization with a scanning signal.
    Type: Application
    Filed: March 25, 2014
    Publication date: October 2, 2014
    Applicant: Sony Corporation
    Inventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
  • Publication number: 20140218414
    Abstract: A comparator unit includes: a comparison section configured to compare a control pulse with an electric potential based on a signal voltage; and a control section configured to control, based on the control pulse, operation and non-operation of the comparison section.
    Type: Application
    Filed: January 28, 2014
    Publication date: August 7, 2014
    Applicant: SONY CORPORATION
    Inventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
  • Publication number: 20140218272
    Abstract: A display unit includes a pixel group having pixels. Each of the pixels includes a light emitting section and a drive circuit. The pixel group is divided into P pieces of pixel blocks. The display unit is configured to allow the light emitting sections from the light emitting sections configuring the respective pixels in a first pixel block of the P pieces of pixel blocks to the light emitting sections configuring the respective pixels in a P-th pixel block of the P pieces of pixel blocks to sequentially emit light together on a pixel block basis, and when the light emitting sections configuring the respective pixels in pixel blocks of the P pieces of pixel blocks emit light, configured to allow the light emitting sections configuring the respective pixels in remaining pixel blocks of the P pieces of pixel blocks not to emit light.
    Type: Application
    Filed: January 28, 2014
    Publication date: August 7, 2014
    Applicant: Sony Corporation
    Inventors: Ken Kikuchi, Takehiro Misonou, Genichiro Oga, Takahiro Kita, Takaaki Sugiyama, Eiji Nagasaka, Kenji Watanabe, Takayuki Kubota
  • Publication number: 20120086696
    Abstract: A level converting circuit includes a level converting part and a bias part. The level converting part includes at least first to fourth n-type field effect transistors and first and second p-type field effect transistors. The bias part includes a fifth n-type field effect transistor, a voltage drop part including at least one resistive element, and a current source having a power-supply-side terminal connected to a voltage source of a voltage higher than a first voltage. The bias part generates a bias voltage higher than the first voltage by the threshold voltage of the first and second n-type field effect transistors or a bias voltage that is higher than the first voltage and lower than the threshold voltage at the side of one end of the resistive element, and supplies the bias voltage to the gates of the first and second n-type field effect transistors in the level converting part.
    Type: Application
    Filed: September 29, 2011
    Publication date: April 12, 2012
    Applicant: Sony Corporation
    Inventors: Takaaki Sugiyama, Genichiro Oga
  • Patent number: 7855720
    Abstract: Disclosed herein is a digital-to-analog converter. The digital-to-analog converter includes: a higher resistor string; a lower resistor string; an operational amplifier; a higher selector; a lower selector; a first switch; a higher capacitor; a second switch; a third switch; and a control circuit.
    Type: Grant
    Filed: July 24, 2007
    Date of Patent: December 21, 2010
    Assignee: Sony Corporation
    Inventors: Masaki Yoshioka, Genichiro Oga, Ken Kitamura, Takaaki Sugiyama, Motoyasu Yano
  • Patent number: 7652650
    Abstract: A circuit having a plurality of driver IC's 101-1 to 101-n provided corresponding to divided areas of a display panel 102, each driver having an output circuit for outputting a supplied reference current IREF as a drive current to corresponding divided areas DRVA1 to DRVAn of the display panel 102 and reference current source circuits 200-1 to 200-n for sampling and holding the reference current input from the reference current input terminal, then supplying the same to the output circuit, the reference current input terminal being connected to the reference current input terminal of another driver by a common current interconnect CML1, and the reference current being distributed to the reference current source circuits of drivers by time division.
    Type: Grant
    Filed: September 3, 2003
    Date of Patent: January 26, 2010
    Assignee: Sony Corporation
    Inventors: Yuichi Takagi, Genichiro Oga, Hiroshi Tachimori
  • Publication number: 20080024478
    Abstract: Disclosed herein is a digital-to-analog converter. The digital-to-analog converter includes: a higher resistor string; a lower resistor string; an operational amplifier; a higher selector; a lower selector; a first switch; a higher capacitor; a second switch; a third switch; and a control circuit.
    Type: Application
    Filed: July 24, 2007
    Publication date: January 31, 2008
    Applicant: Sony Corporation
    Inventors: Masaki Yoshioka, Genichiro Oga, Ken Kitamura, Takaaki Sugiyama, Motoyasu Yano
  • Publication number: 20060017664
    Abstract: A circuit having a plurality of driver IC's 101-1 to 101-n provided corresponding to divided areas of a display panel 102, each driver having an output circuit for outputting a supplied reference current IREF as a drive current to corresponding divided areas DRVA1 to DRVAn of the display panel 102 and reference current source circuits 200-1 to 200-n for sampling and holding the reference current input from the reference current input terminal, then supplying the same to the output circuit, the reference current input terminal being connected to the reference current input terminal of another driver by a common current interconnect CML1, and the reference current being distributed to the reference current source circuits of drivers by time division.
    Type: Application
    Filed: September 3, 2003
    Publication date: January 26, 2006
    Applicant: Sony Corporation
    Inventors: Yuichi Takagi, Genichiro Oga, Hiroshi Tachimori
  • Patent number: 6384577
    Abstract: In a remote control receiving system of an electronic apparatus such as a television receiver, a charger is connected to the output terminal of a sub regulator for driving a load such as a microcomputer by using an AC power source as an energy source, and a charging switch is connected between the load and the charger, and thereby the charging switch is controlled to turn on or off by a comparator on the basis of the charged voltage in the charger.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: May 7, 2002
    Inventors: Masafumi Kikuchi, Tadashi Oomura, Genichiro Oga