TruePosition partners with SiRF to deliver hybrid location delivery platform to carriers

SAN JOSE, Calif., September 14, 2005 – In an effort to broaden and accelerate the deployment of location-based services (LBS), SiRF Technology Holdings, Inc. (Nasdaq: SIRF) and TruePosition, Inc., will collaborate on the integration of SiRFLoc™ - SiRF’s patented, multimode A-GPS architecture - into TruePosition’s location services platform, TrueNorth™ MLS (Managed Location Services).  The anticipated result is that wireless operators can now deliver a lucrative LBS offering based on superior location technology more quickly and cost-effectively, with greater levels of accuracy and yield.  Consumers, in turn, will benefit from reliable and ubiquitous services even in the most challenging of conditions. TruePosition and SiRF will work to deliver these solutions to carriers on a global basis.

TrueNorth™ MLS is a unique location based services platform offering operators a turnkey, end-to-end solution with minimal up-front capital investment and full maintenance and platform management services.  By integrating all the elements necessary, from location technology and middleware to applications and devices, TrueNorth™ MLS enables carriers to bring lucrative LBS applications to market quickly, with minimal operating expenses.

SiRF provides carrier-grade, standards-compliant assisted GPS (A-GPS) location server technology with its SiRFLoc Multimode Location™ software. SiRFLoc will power TrueNorth™ MLS with a standards-compliant control plane and secure user plane location (SUPL) solution. This MLS platform can be deployed within an operator’s network or hosted as a managed service by infrastructure suppliers such as TruePosition. 

"TruePosition has distinguished itself as the location technology provider of choice to major operators such as Cingular and T-Mobile for E-911 and high accuracy location platforms,” said Kanwar Chadha, founder and vice president of marketing for SiRF.  “Our alliance with TruePosition is a major step forward in our strategy to drive LBS optimized solutions, powered by our Multimode A-GPS, to bring the benefits of reliable location technology to a much wider range of consumers.”
“We are pleased to team with SiRF to further our vision of providing high accuracy location for operators and consumers worldwide,” said Joseph Sheehan, president and chief operating officer of TruePosition.  “Our TrueNorth™ MLS platform delivers a managed location service that provides operators a clear path to revenue.  SiRF’s leadership in Multimode A-GPS made this alliance a natural one.”
 
About SiRFLoc

SiRFLoc multimode location technology enables wireless operators to support a wide range of location-based services with minimal impact on their network infrastructure.  Incorporating SiRF’s patented multimode technology, SiRFLoc Server allows LBS applications to ‘shift gears’ between several network-aided and autonomous positioning modes to control network loading and achieve greater operational efficiency.  SiRFLoc Server supports key standard wireless air interfaces and location service protocols such as SUPL for User Plane, RRLP for GSM/GPRS, RRC for UMTS, IS-801 for CDMA and DLS for NTT DoCoMo.  Operators can install SiRFLoc Server in the user plane for faster, less costly deployment, as well as in the control plane, and can efficiently expand their networks as user traffic increases by running multiple servers.
About TruePosition

 TruePosition is one of the leading companies dedicated to the development and implementation of wireless location products, services and devices, providing complete solutions to support the wireless location needs of the global marketplace.  TruePosition's heritage lies in the development of advanced location systems, which includes handset, network and hybrid location solutions. In addition to providing industry leading core location technologies, TruePosition supports all levels of the wireless location value chain through its TrueNorth™ MLS (Managed Location Services) offering.  TruePosition is a subsidiary of Liberty Media Corporation (NYSE: L, LMC.B).  For more information, visit www.trueposition.com.
About SiRF Technology Holdings

SiRF Technology Holdings, Inc. develops and markets semiconductor and software products that are designed to enable location-awareness utilizing GPS and other location technologies in high-volume mobile consumer devices and commercial applications. SiRF’s technology has been integrated into mobile consumer devices, such as automobile navigation systems, mobile phones, PDAs, GPS-based peripherals and handheld GPS navigation devices, and into commercial applications, such as asset tracking devices and fleet management systems.  SiRF markets and sells its products in four target platforms: automotive, consumer electronics, mobile computing and wireless devices. Founded in 1995, SiRF is headquartered in San Jose, Calif., and has sales offices around the world. The company trades on the Nasdaq Stock Exchange under the symbol SIRF. Additional information about SiRF and its location technology solutions can be found at www.sirf.com.
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Forward-Looking Statements

Except for the historical information contained herein, the matters set forth in this press release, including, but not limited to, statements regarding the expected benefits and result of True Position integrating SiRFLoc into its location services platform and the ability of SiRFLoc to enhance the experience of navigation with the high-accuracy are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995.  Words such as “to,” “being,” “possible,” “may,” ” “addresses,” “designed to,” “provide,” “believe,” and similar expressions are intended to identify forward-looking statements.  These statements are not guarantees of future performance and should not be considered as an indication of future performance.  SiRF’s actual results could differ materially from those discussed in these forward-looking statements as a result of risks and uncertainties, including, among others, demand and market acceptance for our products and those of our customers, the market for GPS-based location awareness capabilities, risks associated with the semiconductor industry and other  risks and uncertainties discussed in  the Company's Quarterly Report on Form 10-Q for the quarter ended June 30, 2005 and from time to time in SiRF’s SEC reports. These forward-looking statements speak only as of the date hereof. We do not undertake any obligation to update forward-looking statements.

TruePosition is a registered trademark of TruePosition and TrueNorth is a trademark of TruePosition, Inc.