Thomson Licensing

Harman Becker Automotive Systems Gmbh

Michael Huonker

Peter Mahr

Richard Rutschmann

Guenther Kraft

Valod Noshadi

Wieland Oberst

Günther Kraft

Kelei Shen

Christian Vollmer

Wiebke Schone

Valdo Noshadi

A system including an automotive navigation system; an external drive; a first bus for connecting the external drive with the automotive navigation system; a second bus, which is different from the first bus, for connecting the external drive with the automotive navigation system. The external drive is connectable to the automotive navigation system via the first bus and the second bus. The automotive navigation system is adapted to read data from the external drive via the first bus. The automotive navigation system is adapted to control and to monitor the external drive via the second bus.

Control of an external drivebox

An electronic component is provided that includes a spatial light modulator device, and a circuit board comprising a first major surface, at least one electrically conductive redistribution layer and a first cavity positioned in the first major surface. The spatial light modulator device is positioned within the cavity and is electrically connected to the redistribution layer.

Electronic component

A reproducing system reproduces data recorded on an optical record carrier. The system includes a light source driver unit that modulates and controls a light output by a light source, such as a laser, in order to read data from an optical record carrier. The system is configured to operate in two modes: a reading mode and a light source lifetime extension mode. During the reading mode, the light source generates a continuous light output while data is read from the optical record carrier. During the light source lifetime extension mode, the light source generates a pulsed light output which may provide continued tracking and focus of the light on the optical record carrier, even when no data is being read from it.

Reproducing system for use with optical devices

The present invention relates to a method for analyzing abnormal regions on an optical recording medium. The method includes the steps of:

Method for analyzing an abnormal region on an optical recording medium

The invention proposes an appliance for recording or playing back information having means for detecting or moving the position of a scanning device over a disc with a wobble track, said appliance being able to be used both in recorded and in unrecorded areas of the disc and hence being able to be used both for write-once and for rewriteable recording media with a wobble track, and said appliance additionally permitting fast determination of the scanning location without decoding of scanned-location information which is contained in the wobble track. According to the invention, a wobble signal is scanned from the wobble track on the disc using a scanning device, and a wobble frequency contained in the wobble signal detected from the disc is used for detecting or moving the position of the scanning device. In this regard, the wobble frequency is related to the number of revolutions or the rotation speed of the disc or to a wobble frequency known for a reference location on the disc, which allows the position of the scanning device to be detected or moved without decoding of scanning-location information which is contained in the wobble signal. To generate the wobble frequency contained in the wobble signal, a circuit block is provided which contains a phase comparator, a bandpass filter, a voltage-controlled multivibrator and a digital phase shifter and is used to generate a wobble-frequency signal.

Appliance for recording or playing back information having means for detecting or moving the scanning location on a disc with a wobble track

The invention proposes an appliance for recording or playing back information having means for signal generation from a wobble signal which is scanned from the undulating track on a recording medium, such as a DVD+RW. According to the invention, a signal scanned from the undulating recording track on the recording medium is supplied to a circuit arrangement for generating a clock signal which is both a square-wave voltage whose phase is synchronous with that of the signal and a signal with an even-numbered multiple of the frequency of the wobble signal contained in the signal. In this regard, the invention provides a phase locked loop which is synchronized with the signal and contains a frequency divider for actuating a digital phase shifter and for providing a clock signal which is a phase-synchronous square-wave voltage having the frequency of the wobble signal. The phase comparator provided is a multiplier which is formed using a changeover switch to which the signal and the inverted signal are applied. For decoding information contained in the waveform of the recording track on the recording medium, a circuit arrangement similar to the aforementioned multiplier is used whose changeover switch is actuated with the clock signal and to which a low-pass filter is connected. The signals generated using the means for signal generation are then made available to further functional units in the appliance for recording or playing back information for recording media with a wobble track.

Growing community of inventors

Rosenfeld-Isingen, Germany

Michael Huonker