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SIRF TECHNOLOGY HOLDINGS INC

Overview
  • Total Patents
    50
About

SIRF TECHNOLOGY HOLDINGS INC has a total of 50 patent applications. Its first patent ever was published in 2001. It filed its patents most often in United States, United Kingdom and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets measurement, telecommunications and computer technology are GLOBAL LOCATE INC, HUNAN SATELLITE NAVIGATION INFORMATION TECH CO LTD and CHENGDU HUIRONG GUOKE MICRO SYSTEM TECH CO LTD.

Patent filings per year

Chart showing SIRF TECHNOLOGY HOLDINGS INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Wang Chi-Shin 13
#2 Jia Zhike 12
#3 Han Shaowei 9
#4 Mo Jun 5
#5 Wang Hansheng 3
#6 Chowdhary Mahesh 3
#7 Wang David 3
#8 Lennen Gary 3
#9 Zhang Gengsheng 3
#10 Pande Ashutosh 3

Latest patents

Publication Filing date Title
GB201101305D0 GNSS performance enchancement using accelerometer-only data
GB201021646D0 GPS positioning with aiding from short range networks
GB201018240D0 Hibernation solution for embedded devices and systems
GB201018140D0 Altitude measurement and user context detection for navigation systems
WO2010111118A1 Method and apparatus for improving gps receiver accuracy using an embedded map database
US2011077891A1 Accelerometer-only calibration method
US7924220B1 Method and apparatus for weak data frame sync in a positioning system
WO2009006341A1 Compensation for mounting misalignment of a navigation device
US2009002227A1 High sensitivity global navigation satellite system (GNSS) receiver platform having DMA controller for transferring between internal and external memory
US2009002226A1 Position and time determination under weak signal conditions
US2008303713A1 Navigational positioning without timing information
US2008240309A1 Efficient and flexible numerical controlled oscillators for navigational receivers
US2008180321A1 Methods and systems for acquisition, reacquisiton and tracking of weak navigational signals
WO2008054844A2 A glide touch sensor based interface for navigation infotainment systems
US2007205940A1 Method and device for tracking weak global navigation satellite system (GNSS) signals
US2008150797A1 Navigational signal tracking in low power mode
US2008151971A1 Narrow correlator technique for multipath mitigation
US2008143594A1 Ephemeris download from weak signals
US2008084336A1 Method of mixed data assisted and non data assisted navigation signal acquisition, tracking and reacquisition
KR20080077953A Fast fourier transform with down sampling based navigational satellite signal tracking