O2 Micro, Incorporated

O2micro International Limited

Maishi Electronic (shanghai) Ltd.

Jinghua Zou

Xiaoguang Yu

Bo Yu

Weihua Zhang

Haiquan Huang

James Wang

Jun Wang

Mei Yu

Ke Gao

Mao Liu

Lin Li

Lie Lu

Xiaoyong He

Method and apparatus for controlling an electrical device and a wireless charging device, each comprising one or more modules. An interrupt signal is received. A type of the interrupt signal is determined. A first module is activated based on the type of the interrupt signal to perform one or more functions. The electrical device and the wireless charging device share at least the first module.

Method and apparatus for controlling an electrical device and a wireless charging device

A signal processing system for demodulating navigation bits from a satellite signal is disclosed herein. The signal processing system includes a digital baseband processor for determining a boundary between two navigation bits in the navigation bits according to a first plurality of coarse acquisition (C/A) codes captured from the satellite signals, storing the first plurality of C/A codes, and demodulating a second plurality of C/A codes captured after determining the boundary to recover a first series of the navigation bits. The signal processing system further includes a complementary demodulating unit coupled to the digital baseband processor for demodulating the first plurality of C/A codes to recover a second series of the navigation bits.

System for demodulating navigation bits from satellite signals

A navigation system for detecting error on Doppler frequencies of a plurality of satellite signals measured by the navigation system is disclosed herein. The navigation system includes an offset calculator for calculating offsets of the Doppler frequencies of the satellite signals during a predetermined time period and calculating an average value of the offsets. The navigation system further includes an error detecting unit coupled to the offset calculator. The error detecting unit compares the offsets of the Doppler frequencies of the satellite signals with the average value of the offsets and determines whether the satellite signals are unavailable according to corresponding comparison results.

Navigation system with error-detection on doppler frequencies of satellite signals

A GPS receiver includes a demodulator for obtaining ephemeris data and almanac data from a navigation message sent by satellites, and includes a calculator. The calculator is used for calculating almanac correction parameters according to coordinate differences between ephemeris-based coordinates of the satellites and almanac-based coordinates of the satellites. The GPS receiver also includes a satellite position calculator for calculating the ephemeris-based coordinates of the satellites according to the ephemeris data, for calculating the almanac-based coordinates of the satellites according to the almanac data, and for calculating positions of the satellites according to the ephemeris data, the almanac data and the almanac correction parameters.

Global positioning system receiver

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Chengdu, China

Jinghua Zou