公开(公告)号：US20190392772A1

公开(公告)日：2019-12-26

申请号：US16489947

申请日：2018-02-07

Applicant: ams AG

Inventor： Josef Kriebernegg ,  Bernhard Greimel-Rechling ,  Herbert Lenhard ,  Peter Bliem ,  Joachim Lechner ,  Christian Halper ,  Manuel Hoerbinger

IPC: G09G3/34 ,  H03K7/08

Abstract: A method is suggested for sensing light being incident on an electronic device. The electronic device comprises a display and a light sensor arrangement mounted behind the display such as to receive incident light through the display. The method comprises periodically switching the display on and off depending on a control signal, wherein a period is defined by a succession of an on-state and an off-state of the display. A sensor signal is generated by integrating the incident light by means of the light sensor arrangement for a total integration time comprising a number of periods. A first signal count is determined from the sensor signal being indicative of an amount of integrated incident light during an on-state. A second signal count is determined from the sensor signal being indicative of an amount of integrated incident light during an off-state. A third signal count is determined from the sensor signal being indicative of an amount of integrated incident light during the total integration time. Finally, an ambient light level is determined depending on the first, second and third signal counts.

公开(公告)号：US10950187B2

公开(公告)日：2021-03-16

申请号：US16489947

申请日：2018-02-07

Applicant: ams AG

Inventor： Josef Kriebernegg ,  Bernhard Greimel-Rechling ,  Herbert Lenhard ,  Peter Bliem ,  Joachim Lechner ,  Christian Halper ,  Manuel Hoerbinger

IPC: G09G3/34 ,  H03K7/08

Abstract: A method is suggested for sensing light being incident on an electronic device. The electronic device comprises a display and a light sensor arrangement mounted behind the display such as to receive incident light through the display. The method comprises periodically switching the display on and off depending on a control signal, wherein a period is defined by a succession of an on-state and an off-state of the display. A sensor signal is generated by integrating the incident light by means of the light sensor arrangement for a total integration time comprising a number of periods. A first signal count is determined from the sensor signal being indicative of an amount of integrated incident light during an on-state. A second signal count is determined from the sensor signal being indicative of an amount of integrated incident light during an off-state. A third signal count is determined from the sensor signal being indicative of an amount of integrated incident light during the total integration time. Finally, an ambient light level is determined depending on the first, second and third signal counts.

公开(公告)号：US09698679B2

公开(公告)日：2017-07-04

申请号：US14356587

申请日：2012-10-19

Applicant: ams AG

Inventor： Thomas Jessenig ,  Manfred Lueger ,  Christian Halper ,  Peter Bliem

IPC: H02M3/156 ,  H02M1/32 ,  H02M1/00 ,  H02M3/158

CPC classification number: H02M3/156 ,  H02M1/32 ,  H02M3/158 ,  H02M3/1588 ,  H02M2001/0019

Abstract: A circuit for DC-DC conversion with current limitation comprises a DC-DC converter (100) with a coil (110) and a controllable switch (120) that can be switched into a low-impedance and a high-impedance state, and a current limiter (300a, 300b) for generating a control signal (IOC) for controlling the state of the controllable switch in the DC-DC converter (100). The current limiter (300a, 300b) is constructed such that the current (IL) through the coil at which the current limitation takes place is nearly independent of the ratio of the on-times and off-times of the controllable switch in the DC-DC converter (100).

公开(公告)号：US20140285174A1

公开(公告)日：2014-09-25

申请号：US14356587

申请日：2012-10-19

Applicant: ams AG

Inventor： Thomas Jessenig ,  Manfred Lueger ,  Christian Halper ,  Peter Bliem

IPC: H02M3/156

CPC classification number: H02M3/156 ,  H02M1/32 ,  H02M3/158 ,  H02M3/1588 ,  H02M2001/0019

Abstract: A circuit for DC-DC conversion with current limitation comprises a DC-DC converter (100) with a coil (110) and a controllable switch (120) that can be switched into a low-impedance and a high-impedance state, and a current limiter (300a, 300b) for generating a control signal (IOC) for controlling the state of the controllable switch in the DC-DC converter (100). The current limiter (300a, 300b) is constructed such that the current (IL) through the coil at which the current limitation takes place is nearly independent of the ratio of the on-times and off-times of the controllable switch in the DC-DC converter (100).

Abstract translation: 具有电流限制的用于DC-DC转换的电路包括具有线圈（110）和可切换到低阻抗和高阻抗状态的可控开关（120）的DC-DC转换器（100），以及 用于产生用于控制DC-DC转换器（100）中的可控开关的状态的控制信号（IOC）的限流器（300a，300b）。 电流限制器（300a，300b）被构造成使得通过发生电流限制的线圈的电流（IL）几乎不受直流电中的可控开关的接通时间和关断时间的比率的影响， DC转换器（100）。