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。