Invention Grant
- Patent Title: Method of enhanced cold start and associated user interface for navigational receivers
- Patent Title (中): 导航接收机的增强冷起动方法和相关用户界面
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Application No.: US11466871Application Date: 2006-08-24
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Publication No.: US07710318B2Publication Date: 2010-05-04
- Inventor: David Wang , Henry Leung
- Applicant: David Wang , Henry Leung
- Applicant Address: US CA San Jose
- Assignee: SIRF Technology
- Current Assignee: SIRF Technology
- Current Assignee Address: US CA San Jose
- Agency: Pillsbury Winthrop Shaw Pittman, LLP
- Main IPC: G01S1/02
- IPC: G01S1/02

Abstract:
The present invention provides systems and methods for reducing the ‘cold start’ TTFF of navigation receivers. The systems and methods receive geographical information from a user, such as the nearest city, state or country, and use this geographical information to approximate the position of the receiver. The systems and methods then make use of the approximate position to reduce the ‘cold start’ TTFF. In an embodiment, the approximate position of the receiver is determined from a co-ordinate database in the receiver based on the geographical information provided by the user. In another embodiment, a user provides geographical information to the receiver through a displayed map with several stages of zooming capability.
Public/Granted literature
- US20080048910A1 METHOD OF ENHANCED COLD START AND ASSOCIATED USER INTERFACE FOR NAVIGATIONAL RECEIVERS Public/Granted day:2008-02-28
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