Patents by Inventor Kei Takahashi

Kei Takahashi 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).

  • Publication number: 20220208245
    Abstract: A semiconductor device with reduced power consumption is provided. The semiconductor device includes a transmitter unit, a receiver unit, a bias-outputting unit, and a controller unit. The bias-outputting unit has a plurality of memory units. The plurality of memory units each retains information to determine transmission power. The receiver unit receives a request signal transmitted from a base station and supplies it to the controller unit. The controller unit selects one of the plurality of memory units according to the request signal. The memory unit has an OS transistor and retains information when power supply is stopped.
    Type: Application
    Filed: April 13, 2020
    Publication date: June 30, 2022
    Inventors: Munehiro KOZUMA, Takayuki IKEDA, Kei TAKAHASHI, Takeshi AOKI
  • Publication number: 20220190398
    Abstract: A semiconductor device with reduced power consumption is provided. With three transistors, potentials of two nodes are switched and a voltage is detected. One of a source and a drain of a first transistor is electrically connected to a first terminal. The other of the source and the drain of the first transistor is electrically connected to a non-inverting input of a comparator through a first node. One of a source and a drain of a second transistor is electrically connected to a second terminal. The other of the source and the drain of the second transistor is electrically connected to one of a source and a drain of a third transistor through a second node. The other of the source and the drain of the third transistor is electrically connected to a third terminal. A first capacitor is provided between the first node and the second node. An inverting input of the comparator is electrically connected to a fourth terminal. An output of the comparator is electrically connected to a fifth terminal.
    Type: Application
    Filed: March 16, 2020
    Publication date: June 16, 2022
    Inventors: Takayuki IKEDA, Takeshi AOKI, Munehiro KOZUMA, Kei TAKAHASHI, Shunpei YAMAZAKI
  • Patent number: 11360545
    Abstract: There is provided an information processing device to alleviate motion sickness caused when a video is watched, the information processing device including: a control unit configured to control an operation of a sensation presenting unit that presents a mechanical stimulation or an electric stimulation to a head or a neck of a first user on a basis of information regarding a change in a presentation video presented to the first user via a display unit.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: June 14, 2022
    Assignee: SONY CORPORATION
    Inventor: Kei Takahashi
  • Patent number: 11360363
    Abstract: The display apparatus includes a data generation circuit, a source driver circuit, and a pixel. The source driver circuit is electrically connected to the pixel through first and second wirings. The pixel includes a display device that is a liquid crystal device, a potential of one electrode of the display device can be a potential of the first wiring, and a potential of the other electrode of the display device can be a potential of the second wiring. The image data generation circuit has a function of generating digital image data including first and second data. One of the first and second wirings is made to have a potential corresponding to first data, and the other of the first and second wirings is made to have a potential corresponding to the second data. The potential of the first wiring and the potential of the second wiring are interchanged.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: June 14, 2022
    Inventors: Kei Takahashi, Susumu Kawashima, Koji Kusunoki, Kouhei Toyotaka, Kazunori Watanabe
  • Patent number: 11362647
    Abstract: To provide a hysteresis comparator having a small circuit area and low power consumption. The hysteresis comparator includes a comparator, a switch, a first capacitor, a second capacitor, and a logic circuit. A first terminal of the switch is electrically connected to one of a pair of conductive regions of the first capacitor, one of a pair of conductive regions of the second capacitor, and a first input terminal of the comparator. An output terminal of the comparator is electrically connected to an input terminal of the logic circuit. An output terminal of the logic circuit is electrically connected to the other of the pair of conductive regions of the second capacitor. The logic circuit has a function of generating an inverted signal of a signal input to the input terminal of the logic circuit and outputting the inverted signal to the output terminal of the logic circuit. A reference potential is input to the first input terminal of the comparator and the reference potential is held by the switch.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: June 14, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yuki Okamoto, Kei Takahashi
  • Patent number: 11361726
    Abstract: A display device that achieves both high-accuracy sensing by a touch sensor unit and smooth input using the touch sensor unit is provided. The display device includes a display unit and the touch sensor unit. The touch sensor unit performs touch sensing operation at a different timing from display image rewriting by the display unit, whereby the high-accuracy sensing can be achieved. The display unit has a function of rewriting a display image only in a region that needs to be rewritten. In the case where the entire display region is not necessarily rewritten, the time for the sensing operation by the touch sensor unit can be lengthened, whereby the smooth input can be achieved.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: June 14, 2022
    Inventors: Susumu Kawashima, Kouhei Toyotaka, Kei Takahashi
  • Patent number: 11361497
    Abstract: An information processing device and an information processing method are provided. The information processing device including a display controller that controls display for a first user on the basis of a background image arranged in a virtual space with reference to a position of the first user in the virtual space, and an object related to a second user arranged in the virtual space so as to maintain a relative positional relationship between the first user and the second user in the virtual space.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: June 14, 2022
    Assignee: SONY CORPORATION
    Inventors: Tsuyoshi Ishikawa, Kei Takahashi
  • Publication number: 20220179613
    Abstract: Provided is an information processing device and an information processing method, the information processing device including a control unit that, on the basis of a position of a recognized operation object, dynamically controls output of an information associated with at least one operation region in which the recognized operation object is located, the control unit being configured to, in a case where the recognized operation object is located in the operation region, control execution of a device function corresponding to the operation region in which the recognized operation object is located, and the operation region including a region incapable of being visually recognized by a user.
    Type: Application
    Filed: March 16, 2020
    Publication date: June 9, 2022
    Applicant: SONY GROUP CORPORATION
    Inventors: Junichi SHIMIZU, Kei TAKAHASHI, Junichi NAGAHARA, Manabu FUJIKI, Tomohiro IMURA, Keiichi KITAHARA
  • Publication number: 20220179616
    Abstract: Provided is an information processing device, an information processing method, and a program, the information processing device including a control unit that dynamically controls output of notification information related to a function corresponding to a gesture regarding function execution of the device based on a recognition status of an operation body that is executing the gesture in a predetermined operation region.
    Type: Application
    Filed: March 23, 2020
    Publication date: June 9, 2022
    Applicant: SONY GROUP CORPORATION
    Inventors: Kei TAKAHASHI, Junichi SHIMIZU, Junichi NAGAHARA, Manabu FUJIKI, Tomohiro IMURA, Keiichi KITAHARA
  • Publication number: 20220173131
    Abstract: A display device including a display portion with an extremely high resolution is provided. The display device includes a pixel circuit and a light-emitting element. The pixel circuit includes a first element layer including a first transistor and a second element layer including a second transistor. A channel formation region of the first transistor includes silicon. The first transistor has a function of driving the light-emitting element. The second transistor functions as a switch. A channel formation region of the second transistor includes a metal oxide. The metal oxide functions as a semiconductor. The second element layer is provided over the first element layer.
    Type: Application
    Filed: February 16, 2022
    Publication date: June 2, 2022
    Applicant: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kei Takahashi, Hiroyuki Miyake
  • Publication number: 20220172677
    Abstract: An electronic device capable of efficiently recognizing a handwritten character is provided. The electronic device includes a first circuit, a display portion, and a touch sensor. The first circuit includes a neural network. The display portion includes a flexible display. The touch sensor has the function of outputting an input handwritten character as image information to the first circuit. The first circuit has the function of analyzing the image information and converting the image information into character information, and a function of displaying an image including the character information on the display portion. The analysis is performed by inference through the use of the neural network.
    Type: Application
    Filed: December 9, 2021
    Publication date: June 2, 2022
    Inventors: Shintaro HARADA, Yoshiyuki KUROKAWA, Takeshi AOKI, Yuki OKAMOTO, Hiroki INOUE, Koji KUSUNOKI, Yosuke TSUKAMOTO, Katsuki YANAGAWA, Kei TAKAHASHI, Shunpei YAMAZAKI
  • Publication number: 20220166939
    Abstract: An information processing apparatus according to one example of the present disclosure includes an imaging control unit that causes a first imaging apparatus to acquire a real video while moving at least one of a viewpoint and a line of sight in accordance with a movement instruction given by a user, and a video generation unit that, when the first imaging apparatus approaches an imaging disapproved region that is set as a region in which imaging by the first imaging apparatus is disapproved while moving at least one of the viewpoint and the line of sight in accordance with the movement instruction, generates a video in which the real video is continuously switched to a virtual video of an inside of the imaging disapproved region.
    Type: Application
    Filed: March 6, 2020
    Publication date: May 26, 2022
    Inventors: TSUYOSHI ISHIKAWA, RYOUHEI YASUDA, KEI TAKAHASHI, JUNICHI SHIMIZU, TAKAYOSHI SHIMIZU
  • Patent number: 11329071
    Abstract: A display device with high resolution is provided. A display device with high display quality is provided. A display device includes a display portion, a first terminal group, and a second terminal group. The display portion includes pixels, scan lines, and signal lines. The first terminal group and the second terminal group are apart from each other. The first terminal group includes first terminals and the second terminal group includes second terminals. The scan lines are each electrically connected to the pixels arranged in a row direction. The signal lines are each electrically connected to the pixels arranged in a column direction. The signal lines are each electrically connected to the first terminal or the second terminal. The display portion includes a first region where the signal lines electrically connected to the first terminals and the signal lines electrically connected to the second terminals are mixed.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: May 10, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kei Takahashi, Shunpei Yamazaki
  • Patent number: 11327576
    Abstract: Provided is an information processing apparatus including an information request unit, in a case in which a predetermined trigger signal is detected in a first sensor, requesting second detection information based on a signal detected in a second sensor located at a different position from that of the first sensor, a local communication unit receiving the second detection information, and a processing determination unit determining processing to be executed based on first detection information based on a signal detected in the first sensor and the second detection information. Power consumption can be further suppressed in an information processing apparatus in which sensors are provided at different positions.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: May 10, 2022
    Assignee: SONY CORPORATION
    Inventor: Kei Takahashi
  • Patent number: 11323852
    Abstract: There is provided an information processing apparatus, an information processing method, a program, and an information processing system capable of causing a user of a destination apparatus to be aware of arrival of delivered information without the destination apparatus communicating directly with the peripheral apparatus. The information processing apparatus includes: a notification processing unit that generates notification information for causing a user of a destination apparatus to be aware of arrival of delivered information, which is directed to a peripheral apparatus that is estimated to be located within a predetermined range from the destination apparatus of the delivered information on a basis of positional relationship information; and a communication unit that transmits the notification information generated by the notification processing unit.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: May 3, 2022
    Assignee: SONY CORPORATION
    Inventors: Ayumi Kato, Ikuo Yamano, Kei Takahashi, Kosuke Yoshitomi, Jun Kimura, Tsubasa Tsukahara
  • Publication number: 20220131392
    Abstract: The safety is ensured in such a manner that an abnormality of a secondary battery is detected, for example, a phenomenon that lowers the safety of the secondary battery is detected early and a warning is given to a user. A first protection circuit and a second protection circuit are provided for one secondary battery. The first protection circuit includes a memory circuit including a transistor including an oxide semiconductor. Combination of a plurality of protection circuits enables a complementary double protection system in charging, and the safety can be further enhanced.
    Type: Application
    Filed: February 11, 2020
    Publication date: April 28, 2022
    Inventors: Toshiyuki ISA, Takayuki IKEDA, Kei TAKAHASHI, Ryota TAJIMA
  • Patent number: 11313861
    Abstract: An object of the disclosure is to provide a composition for evaluating the hepatic glucose uptake capacity of a subject and a method for evaluating the hepatic glucose uptake capacity of a subject with the composition. An object of the disclosure is to provide a method for determining the stage of pre-onset diabetes in a subject with pre-onset diabetes using the method for evaluating the hepatic glucose uptake capacity. An aspect of the disclosure accordingly provides a composition comprising 13C-labeled glucose for evaluating the hepatic glucose uptake capacity of a subject. Another aspect of the disclosure provides a method comprising measuring 13C-labeled glucose in a blood sample or an expired air sample obtained from the subject to which the composition was administered. The desired evaluation or determination can be achieved by comparing the measured value with a reference value.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: April 26, 2022
    Assignees: OTSUKA PHARMACEUTICAL CO., LTD., TOHOKU UNIVERSITY
    Inventors: Makoto Inada, Keiko Kawata, Kimiyoshi Sudoh, Hideki Katagiri, Tetsuya Yamada, Kei Takahashi
  • Patent number: 11316478
    Abstract: Power consumption of a signal processing circuit is reduced. Further, power consumption of a semiconductor device including the signal processing circuit is reduced. The signal processing circuit includes a reference voltage generation circuit, a voltage divider circuit, an operational amplifier, a bias circuit for supplying bias current to the operational amplifier, and first and second holding circuits. The first holding circuit is connected between the reference voltage generation circuit and the bias circuit. The second holding circuit is connected between the voltage divider circuit and a non-inverting input terminal of the operational amplifier. Reference voltage from the reference voltage generation circuit and reference voltage from the voltage divider circuit can be held in the first and second holding circuits, respectively, so that the reference voltage generation circuit can stop operating. Thus, power consumption of the reference voltage generation circuit can be reduced.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: April 26, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kei Takahashi, Yoshifumi Tanada
  • Publication number: 20220122526
    Abstract: A novel display is provided. A display having a small change in chromaticity of a micro light-emitting diode in proportion to current density is provided. A display capable of reducing power consumption in the driver circuit when displaying a still image is provided. The display includes a plurality of pixels each including a display element and a microcontroller. The microcontroller includes a first transistor, a triangular wave generator circuit, a comparator, a switch, and a constant current circuit. The first transistor has a function of retaining a potential corresponding to data written to the pixel by being switched off. The triangular wave generator circuit has a function of generating a triangular wave signal. The comparator has a function of generating an output signal corresponding to the potential and the triangular wave signal.
    Type: Application
    Filed: December 27, 2021
    Publication date: April 21, 2022
    Inventors: Kei TAKAHASHI, Koji KUSUNOKI, Kazunori WATANABE, Susumu KAWASHIMA, Kouhei TOYOTAKA, Shunpei YAMAZAKI
  • Patent number: 11307687
    Abstract: A circuit which detects an output current from a pixel and an output current from an input device, and converts the output current into data is provided. The current detection circuit includes an integrator circuit, a comparator, a counter, and a latch. The integrator circuit integrates the potential of a first signal during a period determined by a second signal and outputting it as a third signal. The comparator compares the potential of the third signal with a first potential and outputting a fourth signal. The counter outputs the number of pulses included in a fifth signal as a sixth signal during a period determined by the fourth signal. The latch holds the sixth signal. The integrator circuit preferably further includes an operational amplifier and some capacitors. The first signal is supplied from a pixel included in a display device or an input portion included in an input device.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: April 19, 2022
    Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Kei Takahashi, Hiroyuki Miyake