CSR launches chipset with Bluetooth, GPS and FM

CSR launches chipset with Bluetooth, GPS and FM
CSR today announced its BlueCore7, a single-chip solution to combine Bluetooth v2.1+EDR, Bluetooth low energy, eGPS (enhanced Global Positioning System), and FM transmit and receive capabilities.

Matthew Phillips, Senior Vice President of CSR’s Mobile Handset Connectivity strategic business unit commented, “BlueCore7 […] integrates more wireless technologies on a single chip than any other product on the market. […] We have seen high demand from our customers for Bluetooth, GPS and FM functionality, coupled with an industry need to keep cost, size and power consumption of such technologies to a minimum.”

BlueCore7 is available immediately as sample and will be in volume production in the Fourth quarter of 2008, said CSR.

eGPS technology
eGPS technology draws on intellectual property gained from CSR's early 2007 acquisitions of Nordnav Technologies with its software based GPS system, and Cambridge Positioning Systems with its cellular location technology.

eGPS extends the aiding concept of A-GPS by supplementing Ephemeris and Almanac information with a database of GSM/WCDMA base station locations and a timing model of the network, in order to generate fine time and frequency aiding to speed GPS fixes. It also provides positional information based on cellular network information alone, providing a fallback position accuracy of some 100m.

Satellite time information is maintained accurately and autonomously within the handset, which has the practical benefit of speeding time to fix in poor GPS environments. This accelerates fix times by as much as three times compared with A-GPS, claims CSR. Satellite time calibration can even be maintained autonomously by the handset alone for hours following a fix - allowing systems to operate with or without a network-located server - ensuring that users can sense position when roaming.

The impact on power consumption is said to be small, as the cellular information is continuously derived via the handset's cellular modem, allowing the GPS subsystem to be powered up only when an accurate position fix is required. According to CSR, “a typical eGPS push-to-fix should be available in less than 4 seconds, accurate to within 10m, and require the equivalent power of less than 1 second of handset talk time”.

However, the drawback of eGPS technology is that it requires wireless operators to deploy eGPS servers.

Tuesday, June 3rd 2008

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