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公开(公告)号：US20150163392A1
公开(公告)日：2015-06-11
申请号：US14501429
申请日：2014-09-30
Applicant: Apple Inc.
Inventor： Michael R. Malone , Chiajen Lee , Christopher G. Zeleznik
CPC classification number: H04N5/2357 , H04N5/359 , H04N5/3696 , H04N5/378
Abstract: An image sensor includes an imaging area and one or more flicker detection regions. The imaging area includes pixels that capture one or more images. Each flicker detection region includes pixels that are sampled multiple times while an image is being captured. The samples can be analyzed to detect flicker in the scene being imaged.
Abstract translation: 图像传感器包括成像区域和一个或多个闪烁检测区域。 成像区域包括捕获一个或多个图像的像素。 每个闪烁检测区域包括在捕获图像时多次采样的像素。 可以分析样品以检测正在成像的场景中的闪烁。
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公开(公告)号：US11868455B2
公开(公告)日：2024-01-09
申请号：US17182076
申请日：2021-02-22
Applicant: Apple Inc.
Inventor： Deepti S. Prakash , Lucia E. Ballard , Jerrold V. Hauck , Feng Tang , Etai Littwin , Pavan Kumar Anasosalu Vasu , Gideon Littwin , Thorsten Gernoth , Lucie Kucerova , Petr Kostka , Steven P. Hotelling , Eitan Hirsh , Tal Kaitz , Jonathan Pokrass , Andrei Kolin , Moshe Laifenfeld , Matthew C. Waldon , Thomas P. Mensch , Lynn R. Youngs , Christopher G. Zeleznik , Michael R. Malone , Ziv Hendel , Ivan Krstic , Anup K. Sharma
CPC classification number: G06F21/32 , G06F21/83 , G06V40/166 , G06V40/172 , G06V40/40 , H04L9/085 , H04L9/0844 , H04L9/3228 , H04L9/3231 , H04L9/3234 , H04L9/3247 , H04L63/0861 , H04W12/06
Abstract: Techniques are disclosed relating to biometric authentication, e.g., facial recognition. In some embodiments, a device is configured to verify that image data from a camera unit exhibits a pseudo-random sequence of image capture modes and/or a probing pattern of illumination points (e.g., from lasers in a depth capture mode) before authenticating a user based on recognizing a face in the image data. In some embodiments, a secure circuit may control verification of the sequence and/or the probing pattern. In some embodiments, the secure circuit may verify frame numbers, signatures, and/or nonce values for captured image information. In some embodiments, a device may implement one or more lockout procedures in response to biometric authentication failures. The disclosed techniques may reduce or eliminate the effectiveness of spoofing and/or replay attacks, in some embodiments.
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公开(公告)号：US11653111B2
公开(公告)日：2023-05-16
申请号：US17483513
申请日：2021-09-23
Applicant: Apple Inc.
Inventor： Ashwini Dwarakanath , Michael R. Malone
IPC: H04N25/531 , H04N25/40
CPC classification number: H04N25/531 , H04N25/40
Abstract: A method of operating an image sensor includes determining a duration of an integration time for an image frame; operating an array of pixels to capture the image frame; receiving a decision to truncate the image frame; truncating the image frame before satisfying the duration of the integration time; and reading out a set of pixel values for the array of pixels. Each pixel in the array of pixels is exposed for a truncated integration time. The truncated integration time has a truncated duration shorter than the determined duration.
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公开(公告)号：US20220321808A1
公开(公告)日：2022-10-06
申请号：US17483513
申请日：2021-09-23
Applicant: Apple Inc.
Inventor： Ashwini Dwarakanath , Michael R. Malone
Abstract: A method of operating an image sensor includes determining a duration of an integration time for an image frame; operating an array of pixels to capture the image frame; receiving a decision to truncate the image frame; truncating the image frame before satisfying the duration of the integration time; and reading out a set of pixel values for the array of pixels. Each pixel in the array of pixels is exposed for a truncated integration time. The truncated integration time has a truncated duration shorter than the determined duration.
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Patent Agency Ranking
公开(公告)号：US10929515B2
公开(公告)日：2021-02-23
申请号：US16049933
申请日：2018-07-31
Applicant: Apple Inc.
Inventor： Deepti S. Prakash , Lucia E. Ballard , Jerrold V. Hauck , Feng Tang , Etai Littwin , Pavan Kumar Ansosalu Vasu , Gideon Littwin , Thorsten Gernoth , Lucie Kucerova , Petr Kostka , Steven P. Hotelling , Eitan Hirsh , Tal Kaitz , Jonathan Pokrass , Andrei Kolin , Moshe Laifenfeld , Matthew C. Waldon , Thomas P. Mensch , Lynn R. Youngs , Christopher G. Zeleznik , Michael R. Malone , Ziv Hendel , Ivan Krstic , Anup K. Sharma
Abstract: Techniques are disclosed relating to biometric authentication, e.g., facial recognition. In some embodiments, a device is configured to verify that image data from a camera unit exhibits a pseudo-random sequence of image capture modes and/or a probing pattern of illumination points (e.g., from lasers in a depth capture mode) before authenticating a user based on recognizing a face in the image data. In some embodiments, a secure circuit may control verification of the sequence and/or the probing pattern. In some embodiments, the secure circuit may verify frame numbers, signatures, and/or nonce values for captured image information. In some embodiments, a device may implement one or more lockout procedures in response to biometric authentication failures. The disclosed techniques may reduce or eliminate the effectiveness of spoofing and/or replay attacks, in some embodiments.
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公开(公告)号：US20190044723A1
公开(公告)日：2019-02-07
申请号：US16049933
申请日：2018-07-31
Applicant: Apple Inc.
Inventor： Deepti S. Prakash , Lucia E. Ballard , Jerrold V. Hauck , Feng Tang , Etai Littwin , Pavan Kumar Ansosalu Vasu , Gideon Littwin , Thorsten Gernoth , Lucie Kucerova , Petr Kostka , Steven P. Hotelling , Eitan Hirsh , Tal Kaitz , Jonathan Pokrass , Andrei Kolin , Moshe Laifenfeld , Matthew C. Waldon , Thomas P. Mensch , Lynn R. Youngs , Christopher G. Zeleznik , Michael R. Malone , Ziv Hendel , Ivan Krstic , Anup K. Sharma
Abstract: Techniques are disclosed relating to biometric authentication, e.g., facial recognition. In some embodiments, a device is configured to verify that image data from a camera unit exhibits a pseudo-random sequence of image capture modes and/or a probing pattern of illumination points (e.g., from lasers in a depth capture mode) before authenticating a user based on recognizing a face in the image data. In some embodiments, a secure circuit may control verification of the sequence and/or the probing pattern. In some embodiments, the secure circuit may verify frame numbers, signatures, and/or nonce values for captured image information. In some embodiments, a device may implement one or more lockout procedures in response to biometric authentication failures. The disclosed techniques may reduce or eliminate the effectiveness of spoofing and/or replay attacks, in some embodiments.
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公开(公告)号：US09596420B2
公开(公告)日：2017-03-14
申请号：US14098504
申请日：2013-12-05
Applicant: Apple Inc.
Inventor： Xiaofeng Fan , Chiajen Lee , Michael R. Malone , Anup K. Sharma
CPC classification number: H04N5/3535 , H04N5/35554
Abstract: An image sensor includes pixels that accumulate charge during a first integration period and pixels that accumulate charge during shorter second integration periods when an image is captured. The pixels having the shorter second integration period accumulate charge at two or more different times during the first integration period. Charge is read out of the pixels associated with the first integration period at the end of the first integration period, while charge is read out of the pixels having the second integration period at the end of each second integration period.
Abstract translation: 图像传感器包括在第一积分周期期间累积电荷的像素和当捕获图像的较短的第二积分周期期间累积电荷的像素。 具有较短的第二积分周期的像素在第一积分周期期间的两个或更多个不同时间积累电荷。 在第一积分周期结束时从与第一积分周期相关联的像素中读出电荷，同时在每个第二积分周期结束时从具有第二积分周期的像素中读出电荷。
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18.发明授权System and method for estimating an ambient light condition using an image sensor and field-of-view compensation 有权使用图像传感器和视野补偿来估计环境光条件的系统和方法公开(公告)号：US09277144B2
公开(公告)日：2016-03-01
申请号：US14207176
申请日：2014-03-12
Applicant: Apple Inc.
Inventor： Suppawan Kleekajai , Micah P. Kalscheur , Michael R. Malone
CPC classification number: H04N5/335 , H04N5/23245 , H04N5/2351
Abstract: A system and method for estimating an ambient light condition is using an image sensor of a digital camera. An array of pixels is obtained using the image sensor. A matrix of grid elements is defined. Each grid element comprises multiple adjacent pixels of the array of pixels. A first measurement value is generated for a grid element of the matrix of grid elements based on the pixels associated with the grid element. A set of grid elements are identified having a first measurement value that satisfies a brightness criteria. A second measurement is generated using the identified set of grid elements. A simulated-light-sensor array is generated using the second measurement value. An estimate of the ambient light condition is calculated using the simulated-light-sensor array.
Abstract translation: 用于估计环境光条件的系统和方法是使用数字照相机的图像传感器。 使用图像传感器获得像素阵列。 定义网格元素矩阵。 每个网格元素包括像素阵列的多个相邻像素。 基于与网格元素相关联的像素，为网格元素矩阵的网格元素生成第一测量值。 识别具有满足亮度准则的第一测量值的一组网格元素。 使用所识别的一组网格元素生成第二测量。 使用第二测量值生成模拟光传感器阵列。 使用模拟光传感器阵列计算环境光条件的估计。
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公开(公告)号：US20140125852A1
公开(公告)日：2014-05-08
申请号：US14069199
申请日：2013-10-31
Applicant: Apple Inc.
Inventor： Richard L. Baer , Michael R. Malone , Ting Chen , David Amnon Silverstein
CPC classification number: H04N5/23245 , H04N5/2352 , H04N5/2353 , H04N5/243 , H04N5/3532
Abstract: A controller for an image sensor includes a mode selector that receives a selection between image capture mode and data capture mode. An exposure sensor collects exposure data for a scene falling on the image sensor. A command interface sends commands to the image sensor to cause the image sensor to capture an image with a rolling reset shutter operation in which an integration interval for the image sensor is set based on the exposure data if the image capture mode is selected. The integration interval for the image sensor is set to less than two row periods, preferably close to one row period, without regard to the exposure data if the data capture mode is selected. An analog gain may be increased to as large a value as possible in data capture mode. All pixels in a row may be summed before AD conversion in data capture mode.
Abstract translation: 用于图像传感器的控制器包括接收图像拍摄模式和数据捕获模式之间的选择的模式选择器。 曝光传感器收集落在图像传感器上的场景的曝光数据。 命令界面向图像传感器发送命令，使得图像传感器利用滚动重置快门操作拍摄图像，其中如果选择了图像拍摄模式，则根据曝光数据设置图像传感器的积分间隔。 如果选择数据捕获模式，则不考虑曝光数据，图像传感器的积分间隔被设置为小于两个行周期，优选接近一个行周期。 在数据捕获模式下，模拟增益可能会增加到尽可能大的值。 在数据捕获模式下，AD转换之前可以将所有像素相加。
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