Typhoon MyGuide 3500 mobile - GPS module - SiRF GSP2e LP-7451-92278

SiRF Technology, Inc. was a pioneer in the commercial use of

GPS The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States government and operated by the United States Space Force. It is one of the global navigation satellite sy ...

technology for consumer applications. The company was founded in 1995 and was headquartered in San Jose, California. Notable and founding members included Sanjai Kohli,

Dado Banatao Diosdado P. Banatao (born May 23, 1946) is a Filipino entrepreneur and engineer working in the high-tech industry, credited with having developed the first 10-Mbit Ethernet CMOS with silicon coupler data-link control and transceiver chip, the fir ...

, and Kanwar Chadha. The company was acquired by British firm

CSR plc CSR plc (formerly Cambridge Silicon Radio) was a multinational fabless semiconductor company headquartered in Cambridge, United Kingdom. Its main products were connectivity, audio, imaging and location chips. CSR was listed on the London Stoc ...

in 2009, who were in turn subsequently acquired by American company Qualcomm on 13 August 2015. SiRF manufactured a range of patented

chipsets and software for consumer navigation devices and systems. The chips are based on

ARM In human anatomy, the arm refers to the upper limb in common usage, although academically the term specifically means the upper arm between the glenohumeral joint (shoulder joint) and the elbow joint. The distal part of the upper limb between th ...

controllers integrated with low-noise radio receivers to decode GPS signals at very low signal levels (typically -160

dBm DBM or dbm may refer to: Science and technology * dBm, a unit for power measurement * DBM (computing), family of key-value database engines including dbm, ndbm, gdbm, and Berkeley DB * Database Manager (DBM), a component of 1987's ''Extended Edi ...

). SiRF chips also support SBAS to allow for differentially corrected positions.

SiRFstarIII

SiRFstarIII architecture is designed to be useful in wireless and handheld location-based services (LBS) applications, for 2G, 2.5G, 3G asynchronous networks. The SiRFstarIII family comprises the GRF3w RF IC, the GSP3f digital section, and the GSW3 software that is API compatible with GSW2 and SiRFLoc. The chips have been adopted by major GPS manufacturers, including Sony, Micro Technologies, Garmin, TomTom and Magellan.

SiRFatlas IV

SiRFatlas IV is a multifunction location system processor and is meant for entry-level Personal Navigation Devices (PNDs). The SiRFatlas IV is a cheaper version of the very popular, but rather expensive SiRFPrima platform. Has GPS/Galileo baseband, LCD touch-screen controller, video input, 10-bit ADC and a high-speed USB 2.0.

SiRFstarV

SiRFstarV chips, launched in 2012, are capable of tracking NAVSTAR, GLONASS, Galileo,

Compass A compass is a device that shows the cardinal directions used for navigation and geographic orientation. It commonly consists of a magnetized needle or other element, such as a compass card or compass rose, which can pivot to align itself with ...

, SBAS, and future GNSS signals. The SiRFusion platform integrates positioning from GNSS, terrestrial radio solutions such as Wi-Fi and cellular, and MEMS sensors including accelerometers, gyroscopes, and compasses. SiRFusion can then combine this real-time information with cellular base station and Wi-Fi access point location data, ephemeribased aiding information from the CSR Positioning Center (CPC) to generate accurate and reliable position updates.

Acquisition

On 10 February 2009, UK wireless chip company CSR announced it was buying SiRF in a share deal worth $136 million.

References

External links

SiRFstar V 5e - Qualcomm
{{Open Handset Alliance Members Global Positioning System Electronics companies of the United States