Osram Opto Semiconductors Gmbh

Intersil Americas Inc.

Philips Electronics North America Corporation

Philips Semiconductors Inc.

Paul Ta

Hubert Halbritter

Thomas Schwarz

Peter Brick

Kilian Regau

Laura Kreiner

Jens Richter

Hoa Vu

Thorsten Frank Baumheinrich

Jean-Jacques Drolet

Christopher Soell

Patrick Hoerner

Jong Park

Kanishk Chand

Bill R-s Tang

Wei W Wang

Christopher Wiesmann

Alvin Wang

Peter D Bradshaw

Srinivas Pattamatta

The invention relates to various aspects of a μ-LED or a μ-LED array for augmented reality or lighting applications, in particular in the automotive field. The μ-LED is characterized by particularly small dimensions in the range of a few μm.

μ-LED, μ-LED device, display and method for the same

Disclosed are various aspects of a μ-LED or a μ-LED array for augmented reality or lighting applications, in particular in the automotive field. The μ-LED is characterized by particularly small dimensions in the range of a few μm.

A signal processing unit for time of flight measurement includes an oscillation module, a transmission module, a detection module, a multiplier, an analog-to-digital-converter and a processing module. The oscillation module provides m reference phases. The transmission module generates a set of light impulses based on a selection phase selected out of the m reference phases. The detection module receives a set of reflections of the set of light impulses and to generate a detector signal based on the set of reflections. The multiplier obtains a result of a multiplication of the detector signal by a comparison phase. The analog-to-digital-converter converts the result of the multiplier into a digital signal. The processing module determines the comparison phase or the selection phase and calculates an approximate phase difference between the set of generated light impulses and the set of received reflections based on the digital signal.

Signal processing unit and method for time of flight measurement

A spread spectrum clock signal generator and an accompanying method provide a spread spectrum clock signal of a reduced electromagnetic interference. The spread spectrum clock signal generator includes (a) a state machine, which maintains a current state of the spread spectrum clock signal generator, receives as input value a next state of the spread spectrum clock signal generator and generates a clock phase selection signal based on the current and next states; (b) a random number generator for generating the next state; and (c) a waveform generation circuit for generating a spread spectrum clock signal based on the clock phase selection signal.

Spread spectrum clock generator and method

In a transceiver, a transmitter circuit is provided substantially the same common-mode voltage regardless of whether the transceiver is in a transmitting or receiving mode. In one embodiment, the transmitter circuit includes a driver circuit which, in the transmission mode of the transceiver, drives an output differential signal, and which, in the receiving mode of the transceiver, provides a termination circuit for an input differential signal. A variable resistor is provided to connect between a supply voltage and the driver circuit, the resistance of the variable resistor is selected such that the common-mode voltage of the output differential signal of the transmission mode substantially equals the common-mode voltage in the input differential signal of the receiving mode.

Differential driver with common mode voltage tracking and method

A method provides a bidirectional communication protocol for data communication between a first device and a second device. The method includes: during a first time interval, transmitting data from the first device to the second device; and during a second time interval, (a) after the occurrence of a first event, (i) suspending data transmission from the first device to the second device; and (ii) transmitting control data from the second device to the first device; and (b) after the occurrence of a second event, transmitting control data from the first device to the second device.

Bidirectional communication protocol between a serializer and a deserializer

Differential driver with common-mode voltage tracking and method

The performance of the main regulatory transistor of an on-chip voltage regulator circuit is enhanced when the main transistor is appropriately biased during start up. In an example embodiment, a voltage regulator circuit includes a thin gate oxide transistor as the main regulatory transistor and an operational amplifier that is referenced to a midlevel operating voltage. During start-up, the potential voltage difference is large enough to necessitate the disconnection of the main transistor from the operational amplifier. A voltage divider ladder circuit is used to maintain the gate voltage of the main transistor at the midlevel voltage while a smaller thick gate oxide transistor is used to maintain loop stability and to withstand voltage transients.

Voltage regulator circuit

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Fremont, CA, United States of America

Paul Ta