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公开(公告)号：US20210337146A1
公开(公告)日：2021-10-28
申请号：US17305364
申请日：2021-07-06
发明人： MASAKI SAKAKIBARA
摘要： The present technology relates to an imaging apparatus and electronic equipment that can reduce noise. A photoelectric conversion element, a conversion unit that converts a signal from the photoelectric conversion element into a digital signal, a bias circuit that supplies a bias current for controlling a current flowing through an analog circuit in the conversion unit, and a control unit that controls the bias circuit on the basis of an output signal from the conversion unit are provided, and at the start of transfer of a charge from the photoelectric conversion element, the control unit boosts a voltage at a predetermined position of the analog circuit. The conversion unit converts the signal from the photoelectric conversion element into a digital signal using a slope signal whose level monotonously decreases with time. The present technology is applicable to, for example, an imaging apparatus.
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2.发明申请公开(公告)号：US20190273883A1
公开(公告)日：2019-09-05
申请号：US16342820
申请日：2017-10-10
发明人： MASAKI SAKAKIBARA , YORITO SAKANO , SATOKO IIDA
IPC分类号： H04N5/378 , H04N5/353 , H04N5/369 , H04N5/355 , H04N5/3745
摘要： An increase in memory capacity is suppressed in a solid-state imaging element that performs correlated double sampling processing. A pixel circuit sequentially generates each of a predetermined reset level and a plurality of signal levels corresponding to the exposure amount. An analog-to-digital converter converts a predetermined reset level into digital data and outputs the data as reset data, converts each of the plurality of pieces of signal data into digital data, and outputs the data as signal data. An arithmetic circuit holds a difference between the reset data and the signal data output first, as held data in a memory, and then adds the held data and the signal data output second and subsequent times together and causes the memory to hold the added data as new held data.
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公开(公告)号：US20190208152A1
公开(公告)日：2019-07-04
申请号：US16323674
申请日：2017-08-17
发明人： TERUKAZU TANAKA , MASAKI SAKAKIBARA
IPC分类号： H04N5/3745 , H04N5/378
摘要： The present technology relates to an image sensor capable of suppressing the power consumption, and an electronic device. A reference signal output unit configured to output a reference signal of which a level is changed, includes a plurality of DACs including a plurality of current sources, and a plurality of switches controlling a current flowing from the current source, and a load resistance for outputting the reference signal. Further, the reference signal output unit is connected to three or more power sources, and in combinations of two power sources in the three or more power sources, each of two or more types of combinations of the power sources includes a first path through which the current controlled by the switch, flows, and a second path through which a current in the same direction, flows to the load resistance. The present technology, for example, can be applied to an image sensor or the like, performing reference signal comparison type AD conversion.
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公开(公告)号：US20220132054A1
公开(公告)日：2022-04-28
申请号：US17309343
申请日：2019-10-25
发明人： HONGBO ZHU , MASAKI SAKAKIBARA
IPC分类号： H04N5/351 , H04N5/378 , H04N5/3745
摘要： To reduce a circuit scale in a solid-state image sensor that detects an address event. The solid-state image sensor includes a pixel array unit and a drive circuit. In the solid-state image sensor, in the pixel array unit, a logarithmic response pixel that outputs an analog signal proportional to a logarithmic value of an incident light amount and a detection pixel that detects whether or not a change amount of the incident light amount has exceeded a predetermined threshold and outputs a detection signal indicating a detection result are arrayed. Furthermore, in the solid-state image sensor, the drive circuit drives the logarithmic response pixel and the detection pixel to output the analog signal and the detection signal.
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公开(公告)号：US20210321055A1
公开(公告)日：2021-10-14
申请号：US17250352
申请日：2019-04-11
发明人： MASAKI SAKAKIBARA
IPC分类号： H04N5/374 , H04N5/3745
摘要： A solid-state imaging element including a well improves area efficiency while reducing malfunction of a circuit on the well. The solid-state imaging element includes a first well, a second well, a first circuit, and a second circuit. The first well contains an impurity having a polarity identical to a polarity of an impurity in a substrate. The second well contains an impurity having a polarity identical to the polarity of the impurity in the substrate and is disposed adjacent to the first well. The first circuit is disposed on the first well and generates noise in a predetermined period. The second circuit is disposed on the second well and generates noise in a period different from the predetermined period.
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公开(公告)号：US20220021836A1
公开(公告)日：2022-01-20
申请号：US17293254
申请日：2019-10-08
发明人： MASAKI SAKAKIBARA
IPC分类号： H04N5/3745
摘要： A high-quality image is taken by a solid-state imaging element that detects an address event. The solid-state imaging element is provided with a pixel array unit and an analog-to-digital conversion unit. In the pixel array unit in the solid-state imaging element, a normal pixel that generates an analog signal by photoelectric conversion of incident light and outputs the analog signal and a detection pixel that detects that an amount of change in incident light becomes larger than a predetermined threshold and outputs a detection result are arranged. Furthermore, the analog-to-digital conversion unit converts the analog signal into a digital signal.
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公开(公告)号：US20210360187A1
公开(公告)日：2021-11-18
申请号：US16963779
申请日：2019-05-29
发明人： MASAKI SAKAKIBARA
IPC分类号： H04N5/3745 , H04N5/355 , H04N5/378 , H04N5/369
摘要： The present disclosure relates to an imaging element, a control method, and an electronic device that are capable of improving noise characteristics at low illuminance levels. A pixel includes a pixel circuit that outputs an analog pixel signal and an analog-to-digital converter circuit that converts the analog pixel signal to a digital pixel signal. The pixel circuit includes a photoelectric conversion section and a charge-to-voltage conversion section. The photoelectric conversion section receives light incident on the pixel, subjects the received light to photoelectric conversion, and generates an electric charge corresponding to a quantity of the light. The charge-to-voltage conversion section is able to select either a reference conversion efficiency used as a reference or a high conversion efficiency higher than the reference conversion efficiency as an efficiency at which the electric charge generated in the photoelectric conversion section is converted to a voltage. The present technology is applicable, for example, to a solid-state imaging apparatus that performs AD conversion in a pixel.
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公开(公告)号：US20210067168A1
公开(公告)日：2021-03-04
申请号：US16961565
申请日：2019-01-15
IPC分类号： H03M1/56 , H04N5/3745
摘要： The present technology relates to a DAC circuit, a solid-state imaging element, and electronic equipment that can be achieved with a small-scale circuit configuration. The DAC circuit includes: a ramp DAC that generates a ramp signal that changes in voltage with a constant time gradient; an injection DAC that outputs a predetermined voltage during a reset period for resetting a comparison target voltage to be compared with the ramp signal; and an adding circuit that adds an output of the ramp DAC and an output of the injection DAC and outputs the outputs to a comparison circuit as a comparison reference voltage. The present technology can be applied to, for example, a DAC circuit of a solid-state imaging element, and the like.
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公开(公告)号：US20200260030A1
公开(公告)日：2020-08-13
申请号：US16755981
申请日：2018-10-09
发明人： MASAKI SAKAKIBARA
摘要： The present technology relates to an imaging apparatus and electronic equipment that can reduce noise. A photoelectric conversion element, a conversion unit that converts a signal from the photoelectric conversion element into a digital signal, a bias circuit that supplies a bias current for controlling a current flowing through an analog circuit in the conversion unit, and a control unit that controls the bias circuit on the basis of an output signal from the conversion unit are provided, and at the start of transfer of a charge from the photoelectric conversion element, the control unit boosts a voltage at a predetermined position of the analog circuit. The conversion unit converts the signal from the photoelectric conversion element into a digital signal using a slope signal whose level monotonously decreases with time. The present technology is applicable to, for example, an imaging apparatus.
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10.发明申请公开(公告)号：US20200029036A1
公开(公告)日：2020-01-23
申请号：US16490182
申请日：2018-03-30
发明人： SATOKO IIDA , MASAKI SAKAKIBARA , YORITO SAKANO , NAOSUKE ASARI , MASAAKI TAKIZAWA , TOMOHIKO ASATSUMA , SHOGO FURUYA
IPC分类号： H04N5/355
摘要： The present disclosure relates to a solid-state imaging device and a method of controlling a solid-state imaging device, and an electronic device for enabling appropriate expansion of a dynamic range with respect to an object moving at a high speed or an object having a large luminance difference between bright and dark to reduce motion distortion (motion artifact). Exposure of a plurality of pixels is individually controlled in units of pixels. The present disclosure can be applied to a solid-state imaging device.
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