Patents by Inventor Takaaki Sugiyama
Takaaki Sugiyama 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: 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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COMPARATOR CIRCUIT, COMPARATOR CIRCUIT CONTROL METHOD, A/D CONVERSION CIRCUIT, AND DISPLAY APPARATUS
Publication number: 20170163253Abstract: A comparator circuit includes a differential circuit unit which detects a difference between two input signals, a current supply unit which supplies a current to the differential circuit unit, and a control unit which detects an operation timing of the differential circuit unit and controls the current supplied to the differential circuit unit by the current supply unit according to a detection result thereof.Type: ApplicationFiled: February 22, 2017Publication date: June 8, 2017Applicant: Sony Semiconductor Solutions CorporationInventors: Takaaki Sugiyama, Ken Kitamura, Masaki Yoshioka, Ken Kikuchi -
Comparator circuit, comparator circuit control method, A/D conversion circuit, and display apparatus
Patent number: 9608614Abstract: A comparator circuit includes a differential circuit unit which detects a difference between two input signals, a current supply unit which supplies a current to the differential circuit unit, and a control unit which detects an operation timing of the differential circuit unit and controls the current supplied to the differential circuit unit by the current supply unit according to a detection result thereof.Type: GrantFiled: December 19, 2014Date of Patent: March 28, 2017Assignee: Sony Semiconductor Solutions CorporationInventors: Takaaki Sugiyama, Ken Kitamura, Masaki Yoshioka, Ken Kikuchi -
Publication number: 20160118971Abstract: A comparator circuit according to the present disclosure includes: a first switch section that selectively takes in a signal voltage; a second switch section that selectively takes in a control waveform; a differential amplifier including a non-inverted input end connected to each of output ends of the first switch section and the second switch section; a capacity section including one end connected to an inverted input end of the differential amplifier and the other end supplied with a reference voltage; and a third switch section that selectively short-circuits the inverted input end and an output end of the differential amplifier.Type: ApplicationFiled: May 28, 2014Publication date: April 28, 2016Inventors: TAKAAKI SUGIYAMA, MASAKI YOSHIOKA, KEN KIKUCHI, MASARU CHIBASHI, KEN KITAMURA
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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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COMPARATOR CIRCUIT, COMPARATOR CIRCUIT CONTROL METHOD, A/D CONVERSION CIRCUIT, AND DISPLAY APPARATUS
Publication number: 20150187335Abstract: A comparator circuit includes a differential circuit unit which detects a difference between two input signals, a current supply unit which supplies a current to the differential circuit unit, and a control unit which detects an operation timing of the differential circuit unit and controls the current supplied to the differential circuit unit by the current supply unit according to a detection result thereof.Type: ApplicationFiled: December 19, 2014Publication date: July 2, 2015Applicant: Sony CorporationInventors: Takaaki Sugiyama, Ken Kitamura, Masaki Yoshioka, Ken Kikuchi -
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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Publication number: 20100328289Abstract: A signal-line driving circuit includes an output buffer section configured to amplify input data for driving signal lines in order to generate a positive-polarity signal voltage as well as a negative-polarity signal voltage and selectively supplying the positive-polarity signal voltage as well as the negative-polarity signal voltage to a signal-line pair composing of a first one of the signal lines and a second one of the signal lines, the output buffer section employs: a positive-polarity operational transconductance amplifier; a negative-polarity operational transconductance amplifier; a first output section; a second output section; and a group of switches.Type: ApplicationFiled: May 24, 2010Publication date: December 30, 2010Applicant: Sony CorporationInventors: Koichiro Enrin, Toshio Suzuki, Nobuhiko Shigyo, Ken Kitamura, Takaaki Sugiyama, Yoshimasa Serizawa
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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: 7747979Abstract: Even if there exists use restriction in each of devices on a network, cooperation instruction information is created to enable execution of a cooperative processing. A script creation server performs user authentication of a client terminal and acquires user information. Next, the script creation server makes a retrieval request to a service retrieval server for services which the user can use at present, and transmits user information, and then, acquires a service list. When judging that a service is selected as one of structural elements of a job flow, the script creation server causes the user information to reflect the cost and the like required to perform the selected service. Then, the script creation server judges whether the job flow is completed, and creates a script on the basis of information relating to the job flow and inputted function information when it is judged that the job flow is completed.Type: GrantFiled: September 15, 2003Date of Patent: June 29, 2010Assignee: Fuji Xerox Co., Ltd.Inventor: Takaaki Sugiyama
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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: 20040199399Abstract: Even if there exists use restriction in each of devices on a network, cooperation instruction information is created to enable smooth execution of a cooperative processing. A script creation server performs user authentication of a client terminal and acquires user information. Next, the script creation server makes a retrieval request to a service retrieval server for services which the user can use at present, and transmits user information, and then, acquires a service list. When judging that a service is selected as one of structural elements of a job flow, the script creation server causes the user information to reflect the cost and the like required to perform the selected service. Then, the script creation server judges whether the job flow is completed, and creates a script on the basis of information relating to the job flow and I/F information when it is judged that the job flow is completed.Type: ApplicationFiled: September 15, 2003Publication date: October 7, 2004Applicant: Fuji Xerox Co., Ltd.Inventor: Takaaki Sugiyama