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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1
EP3765866A1
LIGHT RECEIVING DEVICE AND DISTANCE MEASURING DEVICE
Publication/Patent Number: EP3765866A1 Publication Date: 2021-01-20 Application Number: 19713590.8 Filing Date: 2019-03-06 Inventor: Shinozuka, Yasuhiro   Kamizuru, Hayato   Assignee: Sony Semiconductor Solutions Corporation   IPC: G01S7/486
2
US2021041540A1
LIGHT RECEIVING DEVICE AND DISTANCE MEASURING DEVICE
Publication/Patent Number: US2021041540A1 Publication Date: 2021-02-11 Application Number: 16/979,483 Filing Date: 2019-03-06 Inventor: Shinozuka, Yasuhiro   Kamizuru, Hayato   Assignee: Sony Semiconductor Solutions Corporation   IPC: G01S7/4863 Abstract: A light receiving device of the present disclosure includes: a pixel array unit having a plurality of pixels 501 to 504 each including a light receiving unit 501 to 504 that generates a signal according to reception of photons; a first switch unit that 611 to 614 recharges the light receiving unit 501 to 504; and a recharge control unit 64 that controls the first switch unit 611 to 614 according to output of the light receiving unit 501 to 504, and the recharge control unit 64 is shared among the plurality of pixels 501 to 504. By this sharing of the recharge control unit 64, since the circuit area of the circuit unit 60 per pixel can be reduced, the aperture ratio can be increased while miniaturizing the pixel 50. Preferably, the recharge control unit 64 includes a four-input OR circuit 641 and a recharge signal generation circuit 642. The OR circuit 641 obtains the OR of the logic signals retrieved from each cathode electrode of the SPAD sensors 501 to 504 supplied through the comparators 631 to 634. The OR output of the OR circuit 641 is supplied to the recharge signal generation circuit 642. The recharge signal generation circuit 642 generates the recharge signal RCHG by delaying the OR output of the OR circuit 641 by a predetermined delay time, and supplies the recharge signal RCHG to the first switch units 611 to 614. As a result, the recharge control unit 64 performs the recharge control in response to the OR signal of the logic signal whose logic is inverted at the time when photons are incident on one or more of the SPAD sensors 501 to 504. Furthermore, a distance measuring device of the present disclosure includes: a light source that irradiates an object to be measured with light; and a light receiving device that receives light reflected by the object to be measured, and the light receiving device includes the light receiving device having the above configuration.
3
EP3781967A1
LIGHT RECEPTION DEVICE AND DISTANCE MEASUREMENT DEVICE
Publication/Patent Number: EP3781967A1 Publication Date: 2021-02-24 Application Number: 19719629.8 Filing Date: 2019-04-09 Inventor: Ozawa, Osamu   Kamizuru, Hayato   Assignee: Sony Semiconductor Solutions Corporation   IPC: G01S17/88
4
US2021025990A1
LIGHT RECEPTION DEVICE AND DISTANCE MEASUREMENT DEVICE
Publication/Patent Number: US2021025990A1 Publication Date: 2021-01-28 Application Number: 16/957,253 Filing Date: 2019-04-09 Inventor: Ozawa, Osamu   Kamizuru, Hayato   Assignee: Sony Semiconductor Solutions Corporation   IPC: G01S7/4863 Abstract: A light reception device comprises a pixel array including a plurality of pixels, each of the plurality of pixels including a photosensitive element configured to generate a signal in response to detection of a photon by the photosensitive element, wherein the plurality of pixels include a first pixel having a first sensitivity to detect a first photon incident on the first pixel and a second pixel having a second sensitivity to detect a second photon incident on the second pixel, wherein the second sensitivity is lower than the first sensitivity.
5
EP3674743A1
DRIVING DEVICE, DRIVING METHOD, AND LIGHT-EMITTING DEVICE
Publication/Patent Number: EP3674743A1 Publication Date: 2020-07-01 Application Number: 18848327.5 Filing Date: 2018-08-10 Inventor: Masumitsu, Naoki   Daio, Katsuhisa   Kamiegawa, Akihito   Yuwaki, Takeshi   Kuroki, Shouichi   Kitada, Masatoshi   Kamizuru, Hayato   Assignee: Sony Semiconductor Solutions Corporation   IPC: G01S7/484 Abstract: The present invention relates to a driving device, a driving method, and a light-emitting unit that make it possible to appropriately drive a light-emitting element. The driving device according to the present invention includes: a setting section (161) that sets at least one of a bias current of a light-emitting element (an LD 121) or a target current for setting output light from the light-emitting element (the LD 121) to desired intensity on the basis of a result of detection of an offset light amount when the light-emitting element (the LD 121) does not emit light; and an output controller (164) that controls an output of a driving current of the light-emitting element (the LD 121) on the basis of at least one of the set bias current or the set target current. The detection of the offset light amount is performed by a light-receiving element (a PD 122) that receives a portion of the output light. The present invention is applicable to a ranging module, for example.
6
WO2019176673A1
LIGHT RECEIVING DEVICE AND DISTANCE MEASURING DEVICE
Publication/Patent Number: WO2019176673A1 Publication Date: 2019-09-19 Application Number: 2019008791 Filing Date: 2019-03-06 Inventor: Shinozuka, Yasuhiro   Kamizuru, Hayato   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION   IPC: G01S7/486 Abstract: A light receiving device of the present disclosure includes: a pixel array unit having a plurality of pixels 501 to 504 each including a light receiving unit 501 to 504 that generates a signal according to reception of photons; a first switch unit that 611 to 614 recharges the light receiving unit 501 to 504; and a recharge control unit 64 that controls the first switch unit 611 to 614according to output of the light receiving unit 501 to 504, and the recharge control unit 64 is shared among the plurality of pixels 501 to 504. By this sharing of the recharge control unit 64, since the circuit area of the circuit unit 60 per pixel can be reduced, the aperture ratio can be increased while miniaturizing the pixel 50. Preferably, the recharge control unit 64 includes a four-input OR circuit 641 and a recharge signal generation circuit 642. The OR circuit 641 obtains the OR of the logic signals retrieved from each cathode electrode of the SPAD sensors 501 to 504 supplied through the comparators 631 to 634. The OR output of the OR circuit 641 is supplied to the recharge signal generation circuit 642. The recharge signal generation circuit 642 generates the recharge signal RCHG by delaying the OR output of the OR circuit 641 by a predetermined delay time, and supplies the recharge signal RCHG to the first switch units 611 to 614. As a result, the recharge control unit 64 performs the recharge control in response to the OR signal of the logic signal whose logic is inverted at the time when photons are incident on one or more of the SPAD sensors 501 to 504. Furthermore, a distance measuring device of the present disclosure includes: a light source that irradiates an object to be measured with light; and a light receiving device that receives light reflected by the object to be measured, and the light receiving device includes the light receiving device having the above configuration.
7
JP2019158806A
LIGHT-RECEIVING DEVICE AND DISTANCE-MEASURING DEVICE
Publication/Patent Number: JP2019158806A Publication Date: 2019-09-19 Application Number: 2018049178 Filing Date: 2018-03-16 Inventor: Shinozuka, Yasuhiro   Kamizuru, Hayato   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORP   IPC: G01S17/10 Abstract: To provide a light-receiving device capable of reducing a circuit area per pixel, miniaturizing pixels, and improving an opening ratio of a pixel, and to provide a distance-measuring device using the light-receiving device.SOLUTION: A light-receiving device includes: a pixel array part having a plurality of pixels each including a light reception part for generating a signal in accordance with reception of photons, a first switch part for recharging the light reception part; and a recharge control part for controlling the first switch part according to output of the light reception part. The recharge control part is shared by the plurality of pixels. The distance-measuring device includes; a light source for applying light to a measurement object; and a light-receiving device for receiving light reflected by the measurement object. The light-receiving device comprises the light-receiving device in the above configuration.SELECTED DRAWING: Figure 5
8
JP2019190892A
LIGHT RECEIVING DEVICE AND DISTANCE MEASURING DEVICE
Publication/Patent Number: JP2019190892A Publication Date: 2019-10-31 Application Number: 2018081068 Filing Date: 2018-04-20 Inventor: Ozawa, Osamu   Kamizuru, Hayato   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORP   IPC: H01L31/107 Abstract: To provide a light receiving device which can increase the dynamic range without performing creative signal processing for a histogram, and a distance measuring device using the light receiving device.SOLUTION: The light receiving device according to the present disclosure includes a pixel array part having a plurality of pixels each including a light receiver generating a signal according to light reception by a photon. The pixel array part has pixels with a first sensitivity and pixels with a second sensitivity lower than the first sensitivity. The distance measuring device according to the present disclosure includes a light source for emitting light to a measurement target object and the above light receiving device for receiving light reflected from a measurement target object.SELECTED DRAWING: Figure 8
9
WO2019203057A1
LIGHT RECEPTION DEVICE AND DISTANCE MEASUREMENT DEVICE
Publication/Patent Number: WO2019203057A1 Publication Date: 2019-10-24 Application Number: 2019015423 Filing Date: 2019-04-09 Inventor: Ozawa, Osamu   Kamizuru, Hayato   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION   IPC: H01L27/146 Abstract: A light reception device comprises a pixel array including a plurality of pixels, each of the plurality of pixels including a photosensitive element configured to generate a signal in response to detection of a photon by the photosensitive element, wherein the plurality of pixels include a first pixel having a first sensitivity to detect a first photon incident on the first pixel and a second pixel having a second sensitivity to detect a second photon incident on the second pixel, wherein the second sensitivity is lower than the first sensitivity.
10
JP2019041201A
DRIVING DEVICE, DRIVING METHOD, AND LIGHT EMITTING DEVICE
Publication/Patent Number: JP2019041201A Publication Date: 2019-03-14 Application Number: 2017160847 Filing Date: 2017-08-24 Inventor: Kamizuru, Hayato   Kitada, Masatoshi   Masumitsu, Naoki   Daio, Katsuhisa   Kuroki, Katsuichi   Yuwaki, Takeshi   Kamiegawa, Akihito   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORP   IPC: H03K17/78 Abstract: To drive a light emitting element appropriately.SOLUTION: A driving device includes a setting unit for setting at least one of a bias current of a light emitting element and a target current for setting an emitted light at a desired intensity based on a result of detecting an offset light quantity when the light emitting element is not emitting light by a light receiving element that receives a part of the emitted light from the light emitting element and an output control unit for controlling an output of a drive current of the light emitting element based on at least one of the set bias current and the target current. The present technology can be applied to, for example, a ranging module.SELECTED DRAWING: Figure 2
11
WO2019039312A1
DRIVING DEVICE, DRIVING METHOD, AND LIGHT-EMITTING DEVICE
Publication/Patent Number: WO2019039312A1 Publication Date: 2019-02-28 Application Number: 2018030019 Filing Date: 2018-08-10 Inventor: Kitada, Masatoshi   Daio, Katsuhisa   Kuroki, Shouichi   Yuwaki, Takeshi   Masumitsu, Naoki   Kamizuru, Hayato   Kamiegawa, Akihito   Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION   IPC: H01S5/062 Abstract: The present technology relates to a driving device, a driving method, and a light-emitting device that make it possible to suitably drive a light-emitting element. A driving device according to the present technology is provided with: a setting unit that performs setting for at least one of a bias current for a light-emitting element and a target current for setting light radiated from the light-emitting element to a desired intensity on the basis of the result of detecting, by a light-receiving element that receives a portion of the radiated light, an offset light level during a period in which the light-emitting element is not emitting light; and an output control unit that controls the output of a driving current for the light-emitting element on the basis of at least one of the set bias current and target current. For example, the present technology is applicable to a rangefinding module. The present invention relates to a driving device, a driving method, and a light-emitting device that make it possible to suitably drive a light-emitting element. A driving device according to the present invention is provided with: a setting unit (161) that performs setting for at least one of a bias current for a light-emitting element (LD121) and a target current for setting light radiated from the light-emitting element (LD121) to a desired intensity on the basis of the result of detecting, by a light-receiving element (PD122) that receives a portion of the radiated light, an offset light level during a period in which the light-emitting element (LD121) is not emitting light; and an output control unit (164) that controls the output of a driving current for the light-emitting element (LD121) on the basis of at least one of the set bias current and target current. For example, the present invention is applicable to a rangefinding module.
12
JP2014171114A
LEVEL CONVERSION CIRCUIT
Publication/Patent Number: JP2014171114A Publication Date: 2014-09-18 Application Number: 2013042090 Filing Date: 2013-03-04 Inventor: Kamizuru, Hayato   Assignee: SONY CORP   IPC: H03F3/34 Abstract: PROBLEM TO BE SOLVED: To highly accurately correct an output offset of a multivalued output differential amplification circuit by a capacitance storage method.SOLUTION: A level conversion circuit includes: the multivalued output differential amplification circuit having an inverting input section
13
US2014247202A1
LEVEL CONVERSION CIRCUIT, MULTI-VALUE OUTPUT DIFFERENTIAL AMPLIFIER, AND DISPLAY UNIT
Publication/Patent Number: US2014247202A1 Publication Date: 2014-09-04 Application Number: 14/189,450 Filing Date: 2014-02-25 Inventor: Kamizuru, Hayato   Assignee: Sony Corporation   IPC: G09G3/20 Abstract: A level conversion circuit includes: a multi-value output differential amplifier circuit including an inverting input section, an output section, and two or more non-inverting input sections; and an offset cancelling circuit configured to store, on each of a plurality of capacitors, an offset voltage that arises on each of the two or more non-inverting input sections of the multi-value output differential amplifier circuit, and subtract the offset voltages from an output voltage of the output section.