Ams Ag

Ams International Ag

Christian Halper

Peter Bliem

Josef Kriebernegg

Herbert Lenhard

Manuel Hoerbinger

Helmut Theiler

Thomas Jessenig

Joachim Lechner

Bernhard Greimel-Rechling

Bernhard Greimel-Làngover

Whitney Hernandez

Manfred Lueger

Peter Kammerlander

A method of operating an optical proximity sensor of a computer device having a display, where the optical proximity sensor is located beneath or otherwise adjacent to the display. The method comprises obtaining a vertical synchronization signal from a display driver, and synchronizing periodic illumination of a light emitter of the optical proximity sensor with the vertical synchronization signal.

Optical proximity sensing with reduced pixel distortion

An optical sensor arrangement comprises a photodiode (), an integrator () with an integrator input () coupled to the photodiode (), a comparator () with a first input () coupled to an integrator output () of the integrator (), and a reference capacitor circuit () that is coupled to the integrator input () and is designed to provide a charge package to the integrator input (). In a start phase (A), charge packages are provided to the integrator input (), until a comparator input voltage (VIN) at the first input () of the comparator () crosses a comparator switching point.

Optical sensor arrangement and method for light sensing

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.

Method for sensing light being incident on an electronic device

A circuit for DC-DC conversion with current limitation comprises a DC-DC converter () with a coil () and a controllable switch () that can be switched into a low-impedance and a high-impedance state, and a current limiter () for generating a control signal (I) for controlling the state of the controllable switch in the DC-DC converter (). The current limiter () is constructed such that the current (I) 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 ().

Circuit for DC-DC conversion with current limitation

The invention relates to a circuit and to a method for generating a start sequence. The circuit comprises at least one partially programmable memory (nonvol) for storing an encoded start sequence (Ni) and a control unit (CTRL), which is equipped to read the encoded start sequence (Ni) and decode it into a decoded start sequence (dNi) and to generate a target register address (n) depending on the decoded start sequence (dNi). An addressable memory (vol) is provided, to which the decoded start sequence (dNi) can be written by means of the control unit (CTRL) at the target register address (n).

Circuit for generating a start sequence and method for generating a start sequence

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Olbendorf, Austria

Christian Halper