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1
US2021051279A1
SOLID-STATE IMAGE SENSOR, IMAGING DEVICE, AND METHOD OF CONTROLLING SOLID-STATE IMAGE SENSOR
Publication/Patent Number: US2021051279A1 Publication Date: 2021-02-18 Application Number: 16/964,059 Filing Date: 2018-12-14 Inventor: Tochigi, Yasuhisa   Takatsuka, Takafumi   Zhu, Hongbo   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION   IPC: H04N5/353 Abstract: To reduce power consumption in a solid-state image sensor that measures a time. The solid-state image sensor includes a count unit, a count control unit, a clock unit, and an estimation unit. The count unit counts the number of times a photon has been incident within a predetermined exposure period, and outputs a count value. The count control unit performs control to stop the count unit and performs a request of time information in a case where the count value has reached a predetermined value before the predetermined exposure period elapses. The clock unit measures a time and outputs the time information in response to the request. The estimation unit estimates the number of incident times of a photon within the predetermined exposure period on the basis of the output time information.
2
US10594304B2
Analog-digital conversion device, solid state image pickup element, and image pickup device
Publication/Patent Number: US10594304B2 Publication Date: 2020-03-17 Application Number: 16/307,203 Filing Date: 2017-04-25 Inventor: Takatsuka, Takafumi   Assignee: SONY CORPORATION   IPC: H04N5/378 Abstract: A analog-digital conversion device is provided with a comparison unit, a holding unit, a bidirectional conveying unit, and a control unit. The comparison unit compares an input signal with a reference signal. The holding unit holds a digital signal corresponding to the reference signal in the timing in which a result of the comparison has changed. The bidirectional conveying unit inputs a digital signal into the holding unit to cause the holding unit to hold the digital signal, and reads the held digital signal as a result of analog-digital conversion for the input signal. The control unit controls internal resistance of the bidirectional conveying unit to be set at a value that differs between when the holding unit is caused to hold the digital signal, and when the held digital signal is read from the holding unit.
3
DE112018002249T5
FESTKÖRPER-BILDGEBUNGSVORRICHTUNG UND ELEKTRONISCHE EINRICHTUNG
Publication/Patent Number: DE112018002249T5 Publication Date: 2020-01-16 Application Number: 112018002249 Filing Date: 2018-04-12 Inventor: Takatsuka, Takafumi   Sugimori, Yusaku   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION   IPC: H04N5/3745 Abstract: Die vorliegende Technologie bezieht sich auf eine Festkörper-Bildgebungsvorrichtung und eine elektronische Einrichtung, um eine Verbesserung einer Übertragungseffizienz einer Ladung von einer Ladungsspeichereinheit über ein Übertragungs-Gate zu einer Ladung-Spannung-Umwandlungseinheit zu ermöglichen. In der Festkörper-Bildgebungsvorrichtung gemäß einem Aspekt der vorliegenden Technologie ist vor einer A/D-Umwandlungsoperation für eine Signalpegel-Erfassung eine Schalteinheit dafür konfiguriert, einen Zustand zumindest einmal in den LG-Zustand zu schalten und den Zustand zumindest einmal in den HG-Zustand zu schalten, ist die Übertragungseinheit dafür konfiguriert, die in der Ladungsspeichereinheit gespeicherte Ladung zumindest zweimal, wenn der Zustand gerade in den LG-Zustand geschaltet ist und wenn der Zustand gerade in den HG-Zustand geschaltet ist, zu der Ladung-Spannung-Umwandlungseinheit zu übertragen, und ist die Ladung-Spannung-Umwandlungseinheit dafür konfiguriert, die Ladung, die übertragen wird, wenn der Zustand gerade in den LG-Zustand geschaltet ist, und die Ladung, die übertragen wird, wenn der Zustand gerade in den HG-Zustand geschaltet ist, zu addieren und die addierte Ladung in ein Spannungssignal umzuwandeln. Die vorliegende Technologie kann für zum Beispiel einen CMOS-Bildsensor verwendet werden.
4
US202053309A1
SOLID-STATE IMAGING DEVICE AND ELECTRONIC DEVICE
Publication/Patent Number: US202053309A1 Publication Date: 2020-02-13 Application Number: 20/181,650 Filing Date: 2018-04-12 Inventor: Takatsuka, Takafumi   Sugimori, Yusaku   Assignee: Sony Semiconductor Solutions Corporation   IPC: H04N5/3745 Abstract: A solid-state imaging device and electronic device with improved charge transfer efficiency from a charge storage unit to a charge-voltage conversion unit via a transfer gate are disclosed. In one example, the solid-state imaging device is configured so that, before an A/D conversion operation for signal level acquisition, a switching unit switches a state to the LG state at least once and to the HG state at least once. A transfer unit is configured to transfer the charge stored in the charge storage unit to the charge-voltage conversion unit at least twice when the state is being switched to the LG state and when the state is being switched to the HG state. A charge-voltage conversion unit adds the charge that is transferred for the LG state and the HG state and convert the added charge into a voltage signal.
5
US10841520B2
Solid-state imaging device and electronic device
Publication/Patent Number: US10841520B2 Publication Date: 2020-11-17 Application Number: 16/500,612 Filing Date: 2018-04-12 Inventor: Takatsuka, Takafumi   Sugimori, Yusaku   Assignee: Sony Semiconductor Solutions Corporation   IPC: H04N5/374 Abstract: A solid-state imaging device and electronic device with improved charge transfer efficiency from a charge storage unit to a charge-voltage conversion unit via a transfer gate are disclosed. In one example, the solid-state imaging device is configured so that, before an A/D conversion operation for signal level acquisition, a switching unit switches a state to the LG state at least once and to the HG state at least once. A transfer unit is configured to transfer the charge stored in the charge storage unit to the charge-voltage conversion unit at least twice when the state is being switched to the LG state and when the state is being switched to the HG state. A charge-voltage conversion unit adds the charge that is transferred for the LG state and the HG state and convert the added charge into a voltage signal.
6
US2020053309A1
SOLID-STATE IMAGING DEVICE AND ELECTRONIC DEVICE
Publication/Patent Number: US2020053309A1 Publication Date: 2020-02-13 Application Number: 16/500,612 Filing Date: 2018-04-12 Inventor: Takatsuka, Takafumi   Sugimori, Yusaku   Assignee: Sony Semiconductor Solutions Corporation   IPC: H04N5/3745 Abstract: A solid-state imaging device and electronic device with improved charge transfer efficiency from a charge storage unit to a charge-voltage conversion unit via a transfer gate are disclosed. In one example, the solid-state imaging device is configured so that, before an A/D conversion operation for signal level acquisition, a switching unit switches a state to the LG state at least once and to the HG state at least once. A transfer unit is configured to transfer the charge stored in the charge storage unit to the charge-voltage conversion unit at least twice when the state is being switched to the LG state and when the state is being switched to the HG state. A charge-voltage conversion unit adds the charge that is transferred for the LG state and the HG state and convert the added charge into a voltage signal.
7
EP3648452A1
IMAGE-CAPTURE DEVICE AND IMAGE-CAPTURE SYSTEM
Publication/Patent Number: EP3648452A1 Publication Date: 2020-05-06 Application Number: 19830851.2 Filing Date: 2019-05-16 Inventor: Hizu, Kazuki   Zhu, Hongbo   Takatsuka, Takafumi   Oike, Yusuke   Assignee: Sony Semiconductor Solutions Corporation   IPC: H04N5/335 Abstract: An imaging device according to the present disclosure includes: a pixel including a photoelectric converter configured to generate a signal in response to entering light, a storage configured to store data corresponding to the signal, and an output section configured to output the data stored in the storage; and a controller configured to control the output section to output the data in a case where the data stored in the storage satisfies a predetermined condition.
8
US2020382726A1
SOLID-STATE IMAGE SENSOR, IMAGING DEVICE, AND METHOD OF CONTROLLING SOLID-STATE IMAGE SENSOR
Publication/Patent Number: US2020382726A1 Publication Date: 2020-12-03 Application Number: 16/964,666 Filing Date: 2018-12-04 Inventor: Inaoka, Yutaka   Zhu, Hongbo   Takatsuka, Takafumi   Assignee: Sony Semiconductor Solutions Corporation   IPC: H04N5/351 Abstract: To reduce power consumption in a solid-state image sensor that detects weak light. The solid-state image sensor includes a photodiode, a resistor, a measuring unit, and a control unit. The photodiode photoelectrically converts incident light and outputs a photocurrent. The resistor drops a potential of one end of the photodiode to a value lower than a power supply potential every time a photocurrent is output. The measuring unit measures illuminance of the incident light on the basis of a frequency of dropping of the potential of one end. The control unit controls the power supply potential to a lower value as the measured illuminance is higher.
9
US2020186735A1
IMAGING DEVICE AND IMAGING SYSTEM
Publication/Patent Number: US2020186735A1 Publication Date: 2020-06-11 Application Number: 16/636,143 Filing Date: 2019-05-16 Inventor: Hizu, Kazuki   Zhu, Hongbo   Takatsuka, Takafumi   Oike, Yusuke   Assignee: Sony Semiconductor Solutions Corporation   IPC: H04N5/378 Abstract: An imaging device according to the present disclosure includes: a pixel including a photoelectric converter configured to generate a signal in response to entering light, a storage configured to store data corresponding to the signal, and an output section configured to output the data stored in the storage; and a controller configured to control the output section to output the data in a case where the data stored in the storage satisfies a predetermined condition.
10
WO2020008737A1
IMAGE-CAPTURE DEVICE AND IMAGE-CAPTURE SYSTEM
Publication/Patent Number: WO2020008737A1 Publication Date: 2020-01-09 Application Number: 2019019469 Filing Date: 2019-05-16 Inventor: Oike, Yusuke   Zhu, Hongbo   Takatsuka, Takafumi   Hizu, Kazuki   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION   IPC: H04N5/335 Abstract: An image-capture device of the present disclosure comprises a photoelectric converter that can generate a signal depending on the incident light; a storage unit that can store data depending on the signal; pixels that each have an output unit that can output the data stored in the storage unit; and a control unit that can control the output unit so that the output unit outputs data when the data stored in the storage unit satisfies prescribed conditions.
11
US10582139B2
Signal processing device, imaging element, and electronic apparatus
Publication/Patent Number: US10582139B2 Publication Date: 2020-03-03 Application Number: 16/162,832 Filing Date: 2018-10-17 Inventor: Takatsuka, Takafumi   Oike, Yusuke   Sakakibara, Masaki   Assignee: SONY CORPORATION   IPC: H04N3/14 Abstract: A signal processing device includes a comparison unit to compare a signal level of an analog signal with a signal level of a reference signal; a selection unit configured to select the reference signal to be supplied to the comparison unit; and a switching unit capable of switching a signal line connected to an input terminal of the comparison unit such that a signal line via which the selected reference signal is transmitted is connected to the input terminal of the comparison unit, wherein the comparison unit includes a floating node as the input terminal, the selection unit includes a signal line in which a parasitic capacitance is caused between the signal line and the floating node as the input terminal of the comparison unit, and the signal line of the selection unit is configured to transmit an identical level of signal in multiple comparison processes of the comparison unit.
12
EP3748957A1
SOLID-STATE IMAGING ELEMENT, IMAGING DEVICE, AND CONTROL METHOD FOR SOLID-STATE IMAGING ELEMENT
Publication/Patent Number: EP3748957A1 Publication Date: 2020-12-09 Application Number: 18903528.0 Filing Date: 2018-12-04 Inventor: Inaoka, Yutaka   Zhu, Hongbo   Takatsuka, Takafumi   Assignee: Sony Semiconductor Solutions Corporation   IPC: H04N5/3745 Abstract: To reduce power consumption in a solid-state image sensor that detects weak light. The solid-state image sensor includes a photodiode, a resistor, a measuring unit, and a control unit. The photodiode photoelectrically converts incident light and outputs a photocurrent. The resistor drops a potential of one end of the photodiode to a value lower than a power supply potential every time a photocurrent is output. The measuring unit measures illuminance of the incident light on the basis of a frequency of dropping of the potential of one end. The control unit controls the power supply potential to a lower value as the measured illuminance is higher.
13
EP3748316A1
SOLID-STATE IMAGING ELEMENT, IMAGING DEVICE, AND CONTROL METHOD FOR SOLID-STATE IMAGING ELEMENT
Publication/Patent Number: EP3748316A1 Publication Date: 2020-12-09 Application Number: 18903793.0 Filing Date: 2018-12-14 Inventor: Tochigi, Yasuhisa   Takatsuka, Takafumi   Zhu, Hongbo   Assignee: Sony Semiconductor Solutions Corporation   IPC: G01J1/02 Abstract: To reduce power consumption in a solid-state image sensor that measures a time. The solid-state image sensor includes a count unit, a count control unit, a clock unit, and an estimation unit. The count unit counts the number of times a photon has been incident within a predetermined exposure period, and outputs a count value. The count control unit performs control to stop the count unit and performs a request of time information in a case where the count value has reached a predetermined value before the predetermined exposure period elapses. The clock unit measures a time and outputs the time information in response to the request. The estimation unit estimates the number of incident times of a photon within the predetermined exposure period on the basis of the output time information.
14
US2019149138A1
ANALOG-DIGITAL CONVERSION DEVICE, SOLID STATE IMAGE PICKUP ELEMENT, AND IMAGE PICKUP DEVICE
Publication/Patent Number: US2019149138A1 Publication Date: 2019-05-16 Application Number: 16/307,203 Filing Date: 2017-04-25 Inventor: Takatsuka, Takafumi   Assignee: SONY CORPORATION   IPC: H03K3/037 Abstract: Inputting/outputting into/from a holding unit for holding a result of analog-digital conversion is performed by simple control while a malfunction is prevented. A analog-digital conversion device is provided with a comparison unit, a holding unit, a bidirectional conveying unit, and a control unit. The comparison unit compares an input signal with a reference signal. The holding unit holds a digital signal corresponding to the reference signal in the timing in which a result of the comparison has changed. The bidirectional conveying unit inputs a digital signal into the holding unit to cause the holding unit to hold the digital signal, and reads the held digital signal as a result of analog-digital conversion for the input signal. The control unit controls internal resistance of the bidirectional conveying unit to be set at a value that differs between when the holding unit is caused to hold the digital signal, and when the held digital signal is read from the holding unit.