公开(公告)号：WO2015084375A1

公开(公告)日：2015-06-11

申请号：PCT/US2013/073400

申请日：2013-12-05

Applicant: APPLE INC.

Inventor： ISIKMAN, Serhan, O. ,  KESTELLI, Nevzat, A. ,  LAND, Brian, R. ,  WANG, Albert

IPC: A61B5/00 ,  A61B5/024

CPC classification number: A61B5/7214 ,  A61B5/02416 ,  A61B5/681 ,  A61B5/6844 ,  A61B5/7278 ,  A61B5/7475 ,  A61B2562/0233

Abstract: A PPG signal may be obtained from a pulse oximeter, which employs a light emitter and a light sensor to measure the perfusion of blood to the skin of a user. However, the signal may be compromised by noise due to motion artifacts. That is, movement of the body of a user may cause a gap between the tissue of a user and the electronic device, introducing noise to the signal. Further, the noise introduced may vary depending on how close the light emitter is to the light sensor. Accordingly, to address the presence of motion artifacts, examples of the present disclosure can receive light information at a light sensor from two different light emitters, each at a different distance from the light sensor along a surface of the electronic device, one relatively close to the light sensor and one relatively far from the light sensor.

Abstract translation: PPG信号可以从采用光发射器和光传感器的脉搏血氧计获得，以测量血液对使用者皮肤的灌注。 然而，由于运动伪影，该信号可能被噪声所损害。 也就是说，用户身体的运动可能导致用户的组织与电子设备之间的间隙，向信号引入噪声。 此外，引入的噪声可以根据光发射器与光传感器的接近程度而变化。 因此，为了解决运动伪影的存在，本公开的示例可以从光传感器接收来自两个不同光发射器的光信息，每个光发射器在距离光传感器沿着电子设备的表面不同的距离处，一个相对靠近 光传感器和一个相对远离光传感器。

公开(公告)号：WO2014137561A1

公开(公告)日：2014-09-12

申请号：PCT/US2014/016135

申请日：2014-02-12

Applicant: APPLE INC.

Inventor： LAND, Brian, R. ,  RUH, Richard ,  HOTELLING, Steven, P.

IPC: G01S7/481 ,  G01S17/02

CPC classification number: G01J1/4204 ,  G01S7/481 ,  G01S17/023 ,  G01S17/026 ,  G01V8/20

Abstract: A proximity and light sensing device including a radiation emitter for proximity sensing positioned on a substrate. The device further includes a radiation detector positioned on the substrate, the radiation detector configured to detect radiation from the emitter. An ambient light detector is also positioned on the substrate and around the radiation emitter so as to form a border around the radiation emitter and detect off-axis ambient light rays.

Abstract translation: 一种接近和光感测装置，包括位于基板上的用于接近感测的辐射发射器。 该装置还包括位于基板上的辐射检测器，该辐射检测器被配置成检测来自发射器的辐射。 环境光检测器也位于基板上并且围绕辐射发射器，以便在辐射发射器周围形成边界并检测离轴环境光线。

公开(公告)号：WO2014077950A1

公开(公告)日：2014-05-22

申请号：PCT/US2013/060903

申请日：2013-09-20

Applicant: APPLE INC.

Inventor： LAND, Brian, R. ,  HOLENASIPUR, Prashanth, S.s. ,  GILTON, Terry ,  DRZAIC, Paul, S. ,  YAO, Wei, H.

IPC: G09G3/20 ,  G09G3/34 ,  G09G3/32

CPC classification number: H05B37/02 ,  G09G3/20 ,  G09G3/3225 ,  G09G3/3406 ,  G09G3/3648 ,  G09G2310/0237 ,  G09G2320/0626 ,  G09G2320/0633 ,  G09G2360/141 ,  G09G2360/144

Abstract: An electronic device may be provided that has a display. The display may produce light using a backlight unit or using an array of light-emitting display pixels. An ambient light sensor may be mounted under an active area of the display to measure ambient light that is transmitted through the display. The display may be periodically disabled to prevent the display from producing light that interferes with the ambient light sensor. Display pixels may be coupled to a common cathode switch that can be periodically opened or the backlight in a display with a backlight can be periodically turned off. Control circuitry for periodically disabling the display while enabling the ambient light sensor may be implemented using a display driver integrated circuit mounted to a display.

Abstract translation: 可以提供具有显示器的电子设备。 显示器可以使用背光单元或使用发光显示像素阵列产生光。 环境光传感器可以安装在显示器的有效区域下方，以测量通过显示器传输的环境光。 可以周期地禁用显示器以防止显示器产生干扰环境光传感器的光。 显示像素可以耦合到可以周期性地打开的公共阴极开关，或者可以周期性地关闭具有背光的显示器中的背光。 可以使用安装到显示器的显示驱动器集成电路来实现在启用环境光传感器的同时周期性禁用显示器的控制电路。