SiRFDiRect Location Technology Delivers Portable Navigation Breakthrough

Sophisticated Algorithms Bring In-Dash Vehicle Positioning Quality to

Low-Cost Portable Devices

    SAN JOSE, Calif., June 5 /PRNewswire-FirstCall/ -- SiRF Technology
 Holdings, Inc. ( SIRF), a leading provider of GPS-enabled silicon
 and premium software location platforms, today introduced its
 SiRFDiRect(TM) technology, a portable navigation breakthrough that achieves
 navigation accuracy and coverage previously available only in costly,
 permanently installed in-car systems. Employing sophisticated algorithms
 that take advantage of closely coupled GPS and dead-reckoning (DR) sensor
 measurements, SiRFDiRect technology delivers very high quality positioning,
 even in the worst GPS signal conditions, without the installation
 inconvenience and high cost of traditional in-dash navigation systems. The
 first implementation of SiRFDiRect technology integrates the award-winning
 SiRFstarIII(R) architecture with low-cost heading and acceleration sensors
 to give portable devices continuous and accurate navigation capabilities
 typically found in very high-end in-car navigation systems.
     "As the portable navigation devices are starting to address mainstream,
 it is very important to meet consumer expectations of reliable positioning
 everywhere, no matter what, and our SiRFDiRect technology is a major
 advance in that direction," said Kanwar Chadha, founder and vice president
 of marketing for SiRF. "It gives our portable navigation device customers a
 competitive edge by enabling them to provide in-car system navigation
 accuracy at lower cost while retaining the advantages of portability and
 transferability."
     SiRFDiRect technology uses heading and acceleration data from the
 sensors to boost the accuracy of portable navigation systems when GPS
 signals are weak or blocked, such as in dense urban canyons and tunnels.
 Transitions between combined GPS/DR and dead-reckoning-only operation are
 seamless and accurate without operator intervention, and the closely
 coupled GPS/DR architecture of SiRFDiRect technology continuously
 auto-calibrates the heading and acceleration sensors, enabling high
 performance with low-cost, small-footprint sensors. The sensors can be
 located in the portable device or in an external dashboard mounting cradle.
 Further enhancing ease of use, SiRFDiRect technology allows great
 flexibility in orienting portable navigation devices when mounting them in
 a vehicle without affecting performance. Mio Technology, Ltd., a leading
 maker of portable navigation devices, announces its plans to deploy
 SiRFDiRect based Navsteadi(TM) high-precision navigation technology at
 Computex Taipei 2007 (TICC/Hall 4, Booth 101B). Navsteadi (TM) brings
 in-dash like positioning accuracy and reliability to portable navigation
 systems.
     "The new technology co-worked by SiRF and Mio, gives our customers the
 best of both worlds; reliable performance in the most challenging GPS
 conditions, expected of the typical high-end navigation system, while
 maintaining the traditional cost and portability advantages of Mio
 systems," said Samuel Wang, president of Mio Technology Ltd. "Our
 continuous close alliance with SiRF has enabled us to bring leading edge
 products with innovative technologies quickly to market, to enhance the
 user experience of portable navigation devices."
     Availability
     SiRFDiRect technology is part of SiRF's portfolio of premium software
 offerings. SiRFDiRect technology and complete reference designs will be
 available in the third quarter of 2007 with the GSC3e/LP and GSC3f/LP chip
 sets, and will be migrated to future SiRF hardware platforms.
     About SiRF Technology Holdings, Inc.
     SiRF Technology Holdings, Inc. develops and markets semiconductor and
 software products that are designed to enable location-awareness utilizing
 GPS and other location technologies, enhanced by wireless connectivity
 capabilities such as Bluetooth, for 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 location servers, asset tracking devices
 and fleet management systems. SiRF markets and sells its products in three
 target platforms: wireless handheld devices, such as mobile phones;
 automotive electronics systems, including navigation and telematics
 systems; and consumer and compute devices, including personal digital
 assistants, notebook computers, recreational GPS handhelds, mobile gaming
 machines, digital cameras and watches. Founded in 1995, SiRF is
 headquartered in San Jose, Calif., and has sales offices, design centers
 and research facilities 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 http://www.sirf.com.
     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 anticipated features and benefits of the SiRFDiRect premium
 software technology and the SiRFstarIII architecture or the anticipated
 features and benefits of the Mio Technology's Mantas family of advanced
 portable navigation devices are forward-looking statements within the
 meaning of the Private Securities Litigation Reform Act of 1995. Words such
 as "to," "being," "will," "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, 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 March 31, 2007 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.
 
 

SOURCE SiRF Technology Holdings, Inc.