公开(公告)号：US20150036065A1

公开(公告)日：2015-02-05

申请号：US14451076

申请日：2014-08-04

Applicant: Apple Inc.

Inventor： Marduke Yousefpor ,  Jean-Marie Bussat ,  Benjamin B. Lyon ,  Giovanni Gozzini ,  Steven P. Hotelling ,  Dale Setlak

IPC: G06K9/00 ,  H05K1/11 ,  G06F3/041

CPC classification number: G06K9/0002 ,  G06K9/228 ,  H04M1/0266 ,  H04M1/67

Abstract: A fingerprint sensor is incorporated in a display stack in an electronic device. A single fingerprint can be captured at one time at a single pre-defined fixed location on a display. Alternatively, a single fingerprint can be acquired at one time at any location on a display. Alternatively, multiple touches on the display can be acquired substantially simultaneously where only one fingerprint is captured at a time or where all of the fingerprints are acquired at the same time. The fingerprint sensor can be implemented as an integrated circuit connected to a bottom surface of a cover sheet, near the bottom surface of the cover sheet, or connected to a top surface of a display. Alternatively, the fingerprint sensor can be implemented as a full panel fingerprint sensor.

Abstract translation: 指纹传感器被结合在电子设备中的显示器堆叠中。 可以在显示屏上的单个预定义固定位置一次捕获单个指纹。 或者，可以在显示器上的任何位置一次获取单个指纹。 或者，可以基本上同时获取显示器上的多个触摸，其中一次只捕获一个指纹，或者同时获取所有指纹。 指纹传感器可以实现为连接到覆盖片的底表面，靠近盖片的底表面或连接到显示器的顶表面的集成电路。 或者，指纹传感器可以被实现为全面板指纹传感器。

公开(公告)号：US20140267659A1

公开(公告)日：2014-09-18

申请号：US13843119

申请日：2013-03-15

Applicant: APPLE INC.

Inventor： Benjamin B. Lyon ,  Giovanni Gozzini

IPC: G06K9/00

CPC classification number: G06K9/0002 ,  G06K9/00067 ,  G06K9/03 ,  G06K9/40

Abstract: Improving fingerprint image measurement despite damage to the stratum corneum. Determining whether a fingerprint image is adequate for matching with a database. If not, re-measure those image portions that are inadequate (overexposed or underexposed), such re-measuring a minimal selection of image portions. An amount of time or power to re-measure is minimized. Improving fingerprint image data collection despite fixed pattern noise like saturated bars in blocks of picture elements. Determining a histogram of grayscale values, removing fixed pattern noise, and expanding real histogram values to obtain more bits of precision.

Abstract translation: 改善指纹图像测量，尽管损害了角质层。 确定指纹图像是否足以与数据库匹配。 如果没有，重新测量那些不够（曝光不足或曝光不足）的图像部分，这样重新测量图像部分的最小选择。 一定时间或重新测量的力量被最小化。 改进指纹图像数据采集，尽管固定模式噪声像像素块中的饱和条。 确定灰度值的直方图，去除固定模式噪声，并扩展实际的直方图值以获得更多的精度。

公开(公告)号：US20130271422A1

公开(公告)日：2013-10-17

申请号：US13842635

申请日：2013-03-15

Applicant: APPLE INC.

Inventor： Steven P. Hotelling ,  Jean-Marie Bussat ,  Benjamin B. Lyon

IPC: G06F3/044

CPC classification number: G06F3/044 ,  G06F3/0416 ,  G06K9/0002

Abstract: A capacitive fingerprint sensor that may be formed of an array of sensing elements. Each capacitive sensing element of the array may register a voltage that varies with the capacitance of a capacitive coupling. A finger may capacitively couple to the individual capacitive sensing elements of the sensor, such that the sensor may sense a capacitance between each capacitive sensing element and the flesh of the fingerprint. The capacitance signal may be detected by sensing the change in voltage on the capacitive sensing element as the relative voltage between the finger and the sensing chip is changed. Alternately, the capacitance signal may be detected by sensing the change in charge received by the capacitive sensing elements as the relative voltage between the finger and the sensing chip is changed.

Abstract translation: 可以由感测元件阵列形成的电容式指纹传感器。 阵列的每个电容感测元件可以记录随电容耦合的电容而变化的电压。 手指可以电容地耦合到传感器的各个电容感测元件，使得传感器可感测每个电容感测元件与指纹的肉体之间的电容。 可以通过感测手指和感测芯片之间的相对电压改变来检测电容感测元件上的电压变化来检测电容信号。 或者，可以通过感测由手指和感测芯片之间的相对电压改变而由电容式感测元件接收的电荷的变化来检测电容信号。