Mstar Semiconductor, Inc.

Tom Tom International B.v.

Tomtom Polska Sp. Z O.o

Tomtom Global Content B.v.

Ying-Lin Lai

Chao-Tung Yang

Marcin Michal Kmiecik

Chiung Hung Chang

Shoufang Chen

Nelson Miguel Da Cruz Gonçalves

Jia-Yi Chen

Nelson Miguel Da Cruz GONÇALVES

Marcin Kmieck

A method of compressing data output from one or more accelerometers configured to be transported, carried or worn by a user is provided. Acceleration values indicative of the movement of the user are measured at a first frequency and values representative of the measured acceleration values are generated at a second frequency, which is lower than the first frequency. The step of generating comprises: defining a plurality of time windows, each time window containing a plurality of measured acceleration values; and applying a transformation to the measured acceleration values within each time window to generate a plurality of transformed values. For each time window, storing at least one of said plurality of transformed values and/or one or more parameters associated therewith.

Accelerometer data compression

A navigation device includes a global navigation satellite system (GNSS) receiver for receiving GNSS signals broadcast by satellites of a GNSS, a receiver for receiving location information input by a user, time information and/or wireless network coverage information and a processing device. In at least one embodiment, the processing device is arranged to determine a seed position from the location information input by a user; time information and/or wireless network coverage information and controls the GNSS receiver to acquire GNSS satellites based on the determined seed position.

Navigation device and method

A mobile communication device with positioning capability is provided, including: a global navigation satellite system (GNSS) receiver; a communication circuit for generating a control signal; an oscillator shared between the communication circuit and the GNSS receiver, for providing a clock signal having a frequency value corresponding to the control signal; and a decision unit, coupled to the communication circuit and the GNSS receiver, for recording the control signal; wherein the GNSS receiver obtains the frequency value of the clock signal according to the control signal recorded in the decision unit.

Mobile communication device with positioning capability and related GPS receiver

A hybrid Global Positioning System (GPS) receiving method, and associated GPS receiving apparatus is provided. The GPS receiving apparatus includes an RF front-end circuit, a correlation circuit, an acquisition engine and a bidirectional interface control unit. The RF front-end receiving circuit receives a satellite signal and converts the same into a baseband signal. The acquisition engine, coupled to the correlation circuit, determines reception power of the GPS satellite signal. The interface control unit, coupled to the acquisition engine, provides a low-speed interface for transmitting GPS intermediate data that includes a code bin, a frequency bin, navigation data, a local system time and a GPS time. The interface control unit includes a memory interface unit for coupling to a memory.

Hybrid GPS receiving method and associated apparatus

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Taipei, Taiwan

Ying-Lin Lai