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).
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Patent number: 11200834Abstract: 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: GrantFiled: August 5, 2015Date of Patent: December 14, 2021Assignee: Sony Semiconductor Solutions CorporationInventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
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Patent number: 10255852Abstract: 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: GrantFiled: June 5, 2017Date of Patent: April 9, 2019Assignee: Sony Semiconductor Solutions CorporationInventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
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Patent number: 10002565Abstract: 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: GrantFiled: January 28, 2014Date of Patent: June 19, 2018Assignee: Sony Semiconductor Solutions CorporationInventors: Ken Kikuchi, Takehiro Misonou, Genichiro Oga, Takahiro Kita, Takaaki Sugiyama, Eiji Nagasaka, Kenji Watanabe, Takayuki Kubota
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Publication number: 20170270858Abstract: 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: ApplicationFiled: June 5, 2017Publication date: September 21, 2017Inventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
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Patent number: 9697766Abstract: 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: GrantFiled: January 28, 2014Date of Patent: July 4, 2017Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATIONInventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
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Publication number: 20150339979Abstract: 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: ApplicationFiled: August 5, 2015Publication date: November 26, 2015Applicant: Sony CorporationInventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
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Patent number: 9159262Abstract: 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: GrantFiled: March 25, 2014Date of Patent: October 13, 2015Assignee: Sony CorporationInventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
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Patent number: 8860709Abstract: 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: GrantFiled: September 29, 2011Date of Patent: October 14, 2014Assignee: Sony CorporationInventors: Takaaki Sugiyama, Genichiro Oga
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Publication number: 20140292745Abstract: 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: ApplicationFiled: March 25, 2014Publication date: October 2, 2014Applicant: Sony CorporationInventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
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Publication number: 20140218414Abstract: 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: ApplicationFiled: January 28, 2014Publication date: August 7, 2014Applicant: SONY CORPORATIONInventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
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Publication number: 20140218272Abstract: 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: ApplicationFiled: January 28, 2014Publication date: August 7, 2014Applicant: Sony CorporationInventors: Ken Kikuchi, Takehiro Misonou, Genichiro Oga, Takahiro Kita, Takaaki Sugiyama, Eiji Nagasaka, Kenji Watanabe, Takayuki Kubota
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Publication number: 20120086696Abstract: 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: ApplicationFiled: September 29, 2011Publication date: April 12, 2012Applicant: Sony CorporationInventors: Takaaki Sugiyama, Genichiro Oga
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Patent number: 7855720Abstract: 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: GrantFiled: July 24, 2007Date of Patent: December 21, 2010Assignee: Sony CorporationInventors: Masaki Yoshioka, Genichiro Oga, Ken Kitamura, Takaaki Sugiyama, Motoyasu Yano
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Patent number: 7652650Abstract: 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: GrantFiled: September 3, 2003Date of Patent: January 26, 2010Assignee: Sony CorporationInventors: Yuichi Takagi, Genichiro Oga, Hiroshi Tachimori
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Publication number: 20080024478Abstract: 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: ApplicationFiled: July 24, 2007Publication date: January 31, 2008Applicant: Sony CorporationInventors: Masaki Yoshioka, Genichiro Oga, Ken Kitamura, Takaaki Sugiyama, Motoyasu Yano
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Publication number: 20060017664Abstract: 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: ApplicationFiled: September 3, 2003Publication date: January 26, 2006Applicant: Sony CorporationInventors: Yuichi Takagi, Genichiro Oga, Hiroshi Tachimori
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Patent number: 6384577Abstract: 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: GrantFiled: November 22, 2000Date of Patent: May 7, 2002Inventors: Masafumi Kikuchi, Tadashi Oomura, Genichiro Oga