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公开(公告)号：US10205898B2
公开(公告)日：2019-02-12
申请号：US14882361
申请日：2015-10-13
Applicant: Apple Inc.
Inventor： Andrew Kenneth John McMahon , D. Amnon Silverstein , David R. Pope , Suk Hwan Lim
Abstract: A pedestal level for an image sensor can be dynamically adjusted based on one or more parameters. The parameters include one or more operating conditions associated with the image sensor, pre-determined image sensor characterization data, the number of unused digital codes, and/or the number of clipped pixel signals. The operating conditions can include the temperature of the image sensor, the gain of at least one amplifier included in processing circuitry operably connected to at least one pixel, and/or the length of the integration period for at least one pixel in the image sensor. Based on the one or more of the parameters, the pedestal level is adjusted to reduce a number of unused digital codes in a distribution of dark current. Additionally or alternatively, the variance of the pixel signals can be reduced to permit the use of a lower pedestal level.
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Patent Agency Ranking
公开(公告)号：US10801886B2
公开(公告)日：2020-10-13
申请号：US15879365
申请日：2018-01-24
Applicant: Apple Inc.
Inventor： Shingo Mandai , Andrew Kenneth John McMahon , Cristiano L. Niclass , Thierry Oggier , Tal Kaitz , Moshe Laifenfeld
IPC: G01J1/44 , G01S7/48 , G01J1/42 , G01S7/486 , G01S7/4863 , G01S7/4865 , G01S17/89 , G01S17/08
Abstract: The sensitivity of one or more single-photon avalanche diodes (SPAD) in a SPAD detector is modulated over time. The sensitivity of all of the SPADs may be modulated, or the sensitivity of one section of the SPADs can be modulated differently from another section of the SPADs. Various techniques for modulating the sensitivity are disclosed.
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公开(公告)号：US20200021633A1
公开(公告)日：2020-01-16
申请号：US16230930
申请日：2018-12-21
Applicant: Apple Inc.
Inventor： SHOICHIRO SENGOKU , Anup K. Sharma , Andrew Kenneth John McMahon
Abstract: Methods and apparatus for converting streaming media between different formats. A bridging device for e.g., Camera Serial Interface (CSI) and DisplayPort is disclosed. Both the CSI and DisplayPort technologies use low power mode operation during blanking intervals of a video transmission. However, the CSI interface can wake up in a very short amount of time (e.g., ˜400 ns), but the DisplayPort interface takes significantly longer to perform link training (e.g., ˜1 ms). Various embodiments of the present disclosure use frame signaling trigger to start a wait time interval timer; the wait time interval can be used by the bridge device to wake up the DisplayPort interface ahead of the CSI2 D-PHY interface, thereby ensuring that both links are active at the same time. This “wake-up” technique can greatly reduce the size of buffering memories that are required.
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公开(公告)号：US20180209846A1
公开(公告)日：2018-07-26
申请号：US15879365
申请日：2018-01-24
Applicant: Apple Inc.
Inventor： Shingo Mandai , Andrew Kenneth John McMahon , Cristiano L. Niclass , Thierry Oggier , Tal Kaitz , Moshe Laifenfeld
Abstract: The sensitivity of one or more single-photon avalanche diodes (SPAD) in a SPAD detector is modulated over time. The sensitivity of all of the SPADs may be modulated, or the sensitivity of one section of the SPADs can be modulated differently from another section of the SPADs. Various techniques for modulating the sensitivity are disclosed.
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公开(公告)号：US09538106B2
公开(公告)日：2017-01-03
申请号：US14276728
申请日：2014-05-13
Applicant: Apple Inc.
Inventor： Andrew Kenneth John McMahon , Chiajen Lee , Michael R. Malone
CPC classification number: H04N5/3577 , H04N5/3765 , H04N5/378
Abstract: An image sensor and a method of operating an image sensor to achieve a substantially uniform power signature. An array of pixels may be scanned using analog sensing circuitry to obtain an analog sensor output. The scanning is performed over a first time interval. The analog sensor output is converted to a digital data output using digital logic circuitry. The converting occurs over a second time interval that is subsequent to the first time interval and may be substantially the same duration as the first time interval. While the array of pixels are being scanned, the digital logic circuitry is operated over the first time interval and substantially coincides with the scanning of the array of pixels.
Abstract translation: 图像传感器和操作图像传感器以实现基本均匀的功率特征的方法。 可以使用模拟感测电路扫描像素阵列以获得模拟传感器输出。 扫描是在第一时间间隔内执行的。 使用数字逻辑电路将模拟传感器输出转换为数字数据输出。 转换发生在第一时间间隔之后的第二时间间隔上，并且可以与第一时间间隔基本相同的持续时间。 当正在扫描像素阵列时，数字逻辑电路在第一时间间隔上运行，并且基本上与像素阵列的扫描重合。
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公开(公告)号：US20160105621A1
公开(公告)日：2016-04-14
申请号：US14882361
申请日：2015-10-13
Applicant: Apple Inc.
Inventor： Andrew Kenneth John McMahon , D. Amnon Sliverstein , David R. Pope , Suk Hwan Lim
Abstract: A pedestal level for an image sensor can be dynamically adjusted based on one or more parameters. The parameters include one or more operating conditions associated with the image sensor, pre-determined image sensor characterization data, the number of unused digital codes, and/or the number of clipped pixel signals. The operating conditions can include the temperature of the image sensor, the gain of at least one amplifier included in processing circuitry operably connected to at least one pixel, and/or the length of the integration period for at least one pixel in the image sensor. Based on the one or more of the parameters, the pedestal level is adjusted to reduce a number of unused digital codes in a distribution of dark current. Additionally or alternatively, the variance of the pixel signals can be reduced to permit the use of a lower pedestal level.
Abstract translation: 可以基于一个或多个参数来动态调整用于图像传感器的基座水平。 这些参数包括与图像传感器相关联的一个或多个操作条件，预定图像传感器表征数据，未使用的数字代码的数量和/或限幅像素信号的数量。 操作条件可以包括图像传感器的温度，包括在可操作地连接到至少一个像素的处理电路中的至少一个放大器的增益和/或图像传感器中的至少一个像素的积分周期的长度。 基于一个或多个参数，调节基座电平以减少暗电流分布中未使用的数字代码的数量。 附加地或替代地，可以减小像素信号的方差以允许使用较低的基座电平。
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