公开(公告)号：US20130294662A1

公开(公告)日：2013-11-07

申请号：US13886554

申请日：2013-05-03

Applicant: APPLE INC.

Inventor： Gordon S. Franza ,  Gregory T. MINTEER ,  Jerry G. DOOLEY ,  Patrick J. Landy ,  Dale R. SETLAK ,  Giovanni GOZZINI

IPC: G06K9/00

CPC classification number: G06K9/0002 ,  G06F3/038 ,  G06F3/044 ,  G06K9/00053 ,  G06K9/00087 ,  G06K9/03 ,  H03G3/3084

Abstract: A finger biometric sensing device may include drive circuitry capable of generating a drive signal and an array of finger biometric sensing pixel electrodes cooperating with the drive circuitry and capable of generating a detected signal based upon placement of a finger adjacent the array of finger biometric sensing pixel electrodes. The detected signal may include a relatively large drive signal component and a relatively small sense signal component superimposed thereon. The finger biometric sensing device may also include a gain stage coupled to the array of finger biometric sensing pixel electrodes, and drive signal nulling circuitry coupled to the gain stage capable of reducing the relatively large drive signal component from the detected signal.

Abstract translation: 手指生物特征感测装置可以包括能够产生驱动信号的驱动电路和与驱动电路配合的手指生物测定感测像素电极的阵列，并且能够基于手指生物体感测像素阵列的放置而产生检测信号 电极。 检测到的信号可以包括相对较大的驱动信号分量和叠加在其上的相对小的感测信号分量。 手指生物特征感测装置还可以包括耦合到手指生物测量感测像素电极阵列的增益级，以及耦合到增益级的驱动信号归零电路，其能够从检测到的信号中减少较大的驱动信号分量。

公开(公告)号：US20170177918A1

公开(公告)日：2017-06-22

申请号：US15056730

申请日：2016-02-29

Applicant: Apple Inc.

Inventor： Michael BOSHRA ,  Gregory T. MINTEER

IPC: G06K9/00 ,  G06T5/00

CPC classification number: G06K9/0002 ,  G06K9/00026 ,  G06K9/0008 ,  G06K9/00114 ,  G06T5/003

Abstract: An electronic device may include a finger biometric sensor that includes an array of electric field sensing pixels and image data output circuitry coupled thereto and capable of outputting image data from a plurality of sub-arrays of the array of electric field sensing pixels and processing circuitry coupled to the image data output circuitry. The processing circuitry is capable of determining movement of a user's finger across the array of electric field sensing pixels by comparing image data from borders of adjacent sub-arrays, the movement causing artifacts in the image data, and, when movement of the user's finger is determined, remove the artifacts from the image data.

公开(公告)号：US20130315451A1

公开(公告)日：2013-11-28

申请号：US13886592

申请日：2013-05-03

Applicant: APPLE INC.

Inventor： Gordon S. FRANZA ,  Gregory T. MINTEER ,  Jerry G. DOOLEY ,  Patrick J. Landy ,  Dale R. SETLAK ,  Giovanni GOZZINI

IPC: G06K9/00

CPC classification number: G06K9/0002 ,  G06F3/038 ,  G06F3/044 ,  G06K9/00053 ,  G06K9/00087 ,  G06K9/03 ,  H03G3/3084

Abstract: A finger biometric sensing device may include an array of finger biometric sensing pixel electrodes and a gain stage coupled to the array of finger biometric sensing pixel electrodes. The finger biometric sensing device may also include error compensation circuitry that may include a memory capable of storing error compensation data. The error correction circuitry may also include a digital-to-analog converter (DAC) cooperating with the memory and coupled to the gain stage and capable of compensating for at least one error based upon the stored error compensation data.

Abstract translation: 手指生物特征检测装置可以包括手指生物测定感测像素电极的阵列和与手指生物特征感测像素电极阵列耦合的增益级。 手指生物特征感测装置还可以包括误差补偿电路，其可以包括能够存储误差补偿数据的存储器。 误差校正电路还可以包括与存储器协作并耦合到增益级的数模转换器（DAC），并能够基于所存储的误差补偿数据补偿至少一个误差。