Patents by Inventor Naoki Kawazu

Naoki Kawazu 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: 11381773
    Abstract: Imaging devices are disclosed. In one example, an imaging device has pixels circuits including an imaging pixel circuit and a dummy pixel circuit. Each of the pixel circuits includes an accumulation section that accumulates electric charge, a first transistor, and an output section. The first transistor includes a first terminal and a second terminal. The second terminal is coupled to the accumulation section. The output section outputs a voltage corresponding to electric charge accumulated in the accumulation section. The first terminal of the first transistor in the imaging pixel circuit is coupled to a first light receiving element, and connected to the second terminal when the first transistor is in an ON state. The first and second terminals of the first transistor in the dummy pixel circuit are connected to each other.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: July 5, 2022
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Tomohiro Matsuura, Naoki Kawazu
  • Publication number: 20220191414
    Abstract: An imaging device having first and second pixels is described. The first pixel includes a first transfer transistor, a first reset transistor, a first amplifier transistor and a first select transistor. The second pixel includes a first photoelectric conversion element, a second transfer transistor, a second reset transistor, a second amplifier transistor and a second select transistor.
    Type: Application
    Filed: February 28, 2022
    Publication date: June 16, 2022
    Applicant: Sony Semiconductor Solutions Corporation
    Inventors: Naoki Kawazu, Motonobu Torii, Motohashi Yuichi, Atsushi Suzuki, Junichiro Azami
  • Patent number: 11343427
    Abstract: An imaging device according to the present disclosure includes: an imaging unit configured to perform an imaging operation; a data generator configured to generate first power supply voltage data corresponding to a first power supply voltage; and a flag generation section configured to generate a flag signal for the first power supply voltage by comparing the first power supply voltage data and first reference data. The first power supply voltage is supplied to the imaging unit.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: May 24, 2022
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Naoki Kawazu, Keita Sasaki, Takumi Oka, Yuichi Motohashi, Atsushi Suzuki
  • Patent number: 11330212
    Abstract: An imaging device according to the present disclosure includes a plurality of pixels each including a first light-receiving element and a second light-receiving element, the plurality of pixels including a first pixel. The imaging device further includes a generating section that generates a first detection value on a basis of a light-receiving result by the first light-receiving element of each of the plurality of pixels, and generates a second detection value on a basis of a light-receiving result by the second light-receiving element of each of the plurality of pixels. The imaging device further includes a diagnosis section that performs a diagnosis processing on a basis of a detection ratio that is a ratio between the first detection value and the second detection value in the first pixel.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: May 10, 2022
    Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Naoki Kawazu, Keita Sasaki, Takumi Oka, Mohammad Munirul Haque, Yuichi Motohashi, Atsushi Suzuki
  • Patent number: 11303833
    Abstract: An imaging device having first and second pixels is described. The first pixel includes a first transfer transistor, a first reset transistor, a first amplifier transistor and a first select transistor. The second pixel includes a first photoelectric conversion element, a second transfer transistor, a second reset transistor, a second amplifier transistor and a second select transistor.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: April 12, 2022
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Naoki Kawazu, Motonobu Torii, Motohashi Yuichi, Atsushi Suzuki, Junichiro Azami
  • Patent number: 11284024
    Abstract: The present technology relates to a solid-state imaging device, a driving method, and an electronic device that are able to enhance a gray scale of a combined pixel value obtained from a pixel including a plurality of photoelectric conversion units having different light receiving sensitivities. In a pixel array unit, a pixel including a plurality of photoelectric conversion units having different light receiving sensitivities is disposed. An analog to digital (AD) conversion unit that compares an electric signal corresponding to a charge of the photoelectric conversion unit having a low light receiving sensitivity among the plurality of photoelectric conversion units included in the pixel of the pixel array unit with a nonlinear reference signal that changes nonlinearly to perform AD conversion on the electric signal. The present technology is able to be applied to, for example, a complementary metal-oxide semiconductor (CMOS) image sensor.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: March 22, 2022
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Naoki Kawazu, Atsushi Suzuki, Takumi Oka
  • Publication number: 20220074797
    Abstract: An imaging device (1) according to the present disclosure includes a pixel array unit (10) that includes a pixel, an analog signal generation unit, an A/D conversion unit (23), and a switch. The analog signal generation unit generates an analog signal based on a temperature around the pixel array unit (10). The A/D conversion unit (23) converts the analog signal into a digital signal. The switch cuts off the analog signal to be supplied to the A/D conversion unit.
    Type: Application
    Filed: December 9, 2019
    Publication date: March 10, 2022
    Inventors: TAKURO KOSAKA, NAOKI KAWAZU, TAKUMI OKA
  • Publication number: 20220060682
    Abstract: An imaging device according to an embodiment of the present disclosure includes a pixel array including a plurality of pixels, a scanning control section that controls scanning of the plurality of pixels, and a readout control section that controls reading of the plurality of pixels. The imaging device further includes a first waveform generation part that generates a plurality of control signals for controlling of at least one of the scanning control section or the readout control section, a second waveform generation part that generates a plurality of reference signals, and a failure detection section that detects a failure of the first waveform generation part or the second waveform generation part on a basis of comparison between the plurality of control signals and the plurality of reference signals.
    Type: Application
    Filed: December 19, 2019
    Publication date: February 24, 2022
    Inventors: Keita Sasaki, Naoki Kawazu, Masaki Murozuka, Yuichi Motohashi
  • Publication number: 20210409680
    Abstract: In one example, an imaging device including a plurality of pixel circuits, a first control line, a second control line, a first voltage supply line, a second voltage supply line, a first light-receiving element, and a diagnosis unit is disclosed. The pixel circuits each include a first terminal, a second terminal, a third terminal, an accumulation unit, a first transistor, a second transistor, and an output unit. The first transistor is couples the third terminal to the accumulation unit on the basis of a voltage of the first terminal. The second transistor supplies a predetermined voltage to the accumulation unit on the basis of a voltage of the second terminal. The output unit outputs a signal corresponding to a voltage in the accumulation unit.
    Type: Application
    Filed: July 13, 2021
    Publication date: December 30, 2021
    Inventors: Takumi Oka, Naoki Kawazu, Atsushi Suzuki
  • Publication number: 20210377462
    Abstract: To obtain imaging device capable of reporting more reliably an occurrence of trouble. The imaging device of the present disclosure includes an imaging sensor configured to generate image data, a diagnosis circuit configured to perform diagnosis processing for the imaging sensor and an output circuit configured to output a flag signal corresponding to a result of the diagnosis processing, wherein the flag signal is set to a ground level signal in response to the result of the diagnosis processing indicating an error.
    Type: Application
    Filed: February 5, 2019
    Publication date: December 2, 2021
    Applicant: Sony Semiconductor Solutions Corporation
    Inventors: Naoki Kawazu, Masaki Murozuka, Motohashi Yuichi, Atsushi Suzuki
  • Publication number: 20210250533
    Abstract: An imaging device having first and second pixels is described. The first pixel comprises a first transfer transistor, a first reset transistor, a first amplifier transistor and a first select transistor. The first transfer transistor has a first terminal coupled to a reference signal generation circuit. The first reset transistor has a first terminal coupled to the reference signal generation circuit. The first amplifier transistor has a gate coupled to a second terminal of the first reset transistor and a second terminal of the first transfer transistor. The first select transistor is coupled to the first amplifier transistor. The second pixel comprises a first photoelectric conversion element, a second transfer transistor, a second reset transistor, a second amplifier transistor and a second select transistor. The second transfer transistor is coupled to the first photoelectric conversion element. The second reset transistor is configured to receive a first predetermined voltage.
    Type: Application
    Filed: March 10, 2021
    Publication date: August 12, 2021
    Applicant: Sony Semiconductor Solutions Corporation
    Inventors: Naoki Kawazu, Motonobu Torii, Motohashi Yuichi, Atsushi Suzuki, Junichiro Azami
  • Patent number: 11089293
    Abstract: In one example, an imaging device including a plurality of pixel circuits a first control line, a second control line, a first voltage supply line, a second voltage supply line, a first light-receiving element, and a diagnosis unit is disclosed. The pixel circuits each includes a first terminal, a second terminal, a third terminal, an accumulation unit, a first transistor, a second transistor, and an output unit. The first transistor is couples the third terminal to the accumulation unit on the basis of a voltage of the first terminal. The second transistor supplies a predetermined voltage to the accumulation unit on the basis of a voltage of the second terminal. The output unit to outputs a signal corresponding to a voltage in the accumulation unit.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: August 10, 2021
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Takumi Oka, Naoki Kawazu, Atsushi Suzuki
  • Patent number: 11089248
    Abstract: The present disclosure relates to an imaging apparatus and an imaging method, a camera module, and an electronic apparatus that are capable of detecting a failure in an imaging device having a structure in which a plurality of substrates are stacked. The timing at which a row drive unit provided in a second substrate outputs a control signal for controlling accumulation and reading of pixel signals in a pixel array provided in a first substrate is compared with the timing at which the control signal output from the row drive unit is detected after passing through the pixel array. Depending on whether or not the timings coincides with each other, a failure is detected. The present disclosure can be applied to an imaging apparatus mounted on a vehicle.
    Type: Grant
    Filed: June 2, 2020
    Date of Patent: August 10, 2021
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Takumi Oka, Atsushi Suzuki, Naoki Kawazu
  • Patent number: 11082651
    Abstract: The present disclosure relates to an imaging apparatus and an imaging method, a camera module, and an electronic apparatus that are capable of detecting a failure in an imaging device having a structure in which a plurality of substrates are stacked. The timing at which a row drive unit provided in a second substrate outputs a control signal for controlling accumulation and reading of pixel signals in a pixel array provided in a first substrate is compared with the timing at which the control signal output from the row drive unit is detected after passing through the pixel array. Depending on whether or not the timings coincides with each other, a failure is detected. The present disclosure can be applied to an imaging apparatus mounted on a vehicle.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: August 3, 2021
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Takumi Oka, Atsushi Suzuki, Naoki Kawazu
  • Patent number: 11025846
    Abstract: [Object] To make it possible to detect, in the case where abnormality has occurred in at least a part of the pixels, the abnormality for each of the pixels.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: June 1, 2021
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Naoki Kawazu, Atsushi Suzuki, Junichiro Azami, Motohashi Yuichi
  • Publication number: 20210152768
    Abstract: An imaging system according to the present disclosure includes: an imaging device that is mounted in a vehicle, and captures and generates an image of a peripheral region of the vehicle; and a processing device that is mounted in the vehicle, and executes processing related to a function of controlling the vehicle on the basis of the image. The imaging device includes: a first control line, a first voltage generator that applies a first voltage to the first control line, a first signal line, a plurality of pixels that applies a pixel voltage to the first signal line, a first dummy pixel that applies a voltage corresponding to the first voltage of the first control line to the first signal line in a first period, a converter including a first converter that performs AD conversion on the basis of a voltage of the first signal line in the first period to generate a first digital code, and a diagnosis section that performs diagnosis processing on the basis of the first digital code.
    Type: Application
    Filed: October 2, 2020
    Publication date: May 20, 2021
    Applicant: Sony Semiconductor Solutions Corporation
    Inventors: Naoki Kawazu, Atsushi Suzuki, Junichiro Azami, Yuichi Motohashi
  • Patent number: 10992889
    Abstract: A first pixel comprises a first transfer transistor, a first reset transistor, a first amplifier transistor and a first select transistor. The first transfer transistor has a first terminal coupled to a reference signal generation circuit. The first reset transistor has a first terminal coupled to the reference signal generation circuit. The first amplifier transistor has a gate coupled to a second terminal of the first reset transistor and a second terminal of the first transfer transistor. The first select transistor is coupled to the first amplifier transistor. A second pixel comprises a first photoelectric conversion element, a second transfer transistor coupled to the first photoelectric conversion element, a second reset transistor configured to receive a first predetermined voltage, a second amplifier transistor coupled to the second transfer transistor and the second reset transistor, and a second select transistor coupled to the second amplifier transistor.
    Type: Grant
    Filed: October 16, 2017
    Date of Patent: April 27, 2021
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Naoki Kawazu, Motonobu Torii, Motohashi Yuichi, Atsushi Suzuki, Junichiro Azami
  • Publication number: 20210112213
    Abstract: The present disclosure relates to an imaging apparatus and an imaging method, a camera module, and an electronic apparatus that are capable of detecting a failure in an imaging device having a structure in which a plurality of substrates are stacked. The timing at which a row drive unit provided in a second substrate outputs a control signal for controlling accumulation and reading of pixel signals in a pixel array provided in a first substrate is compared with the timing at which the control signal output from the row drive unit is detected after passing through the pixel array. Depending on whether or not the timings coincides with each other, a failure is detected. The present disclosure can be applied to an imaging apparatus mounted on a vehicle.
    Type: Application
    Filed: December 21, 2020
    Publication date: April 15, 2021
    Applicant: Sony Semiconductor Solutions Corporation
    Inventors: Takumi Oka, Atsushi Suzuki, Naoki Kawazu
  • Publication number: 20210041305
    Abstract: To obtain an imaging device that can improve temperature detection accuracy. An imaging device of the present disclosure includes a processing unit formed on a first semiconductor substrate and capable of performing predetermined image processing on the basis of image data obtained by an imaging unit, a temperature sensor formed on the first semiconductor substrate and capable of generating a detection signal according to a temperature, and a first pad electrode formed on the first semiconductor substrate and electrically insulated from a circuit formed on the first semiconductor substrate.
    Type: Application
    Filed: January 23, 2019
    Publication date: February 11, 2021
    Applicant: Sony Semiconductor Solutions Corporation
    Inventors: Naoki Kawazu, Keita Sasaki, Takumi Oka, Mohammad Munir Haque, Nobuhiko Fujimori, Makoto Satou, Masahiro Baba, Satoshi Yamamoto, Yuichi Motohashi, Atsushi Suzuki
  • Publication number: 20200412950
    Abstract: An imaging device according to the present disclosure includes: an imaging unit configured to perform an imaging operation; a data generator configured to generate first power supply voltage data corresponding to a first power supply voltage; and a flag generation section configured to generate a flag signal for the first power supply voltage by comparing the first power supply voltage data and first reference data. The first power supply voltage is supplied to the imaging unit.
    Type: Application
    Filed: February 5, 2019
    Publication date: December 31, 2020
    Inventors: NAOKI KAWAZU, KEITA SASAKI, TAKUMI OKA, YUICHI MOTOHASHI, ATSUSHI SUZUKI