Method of enhanced cold start and associated user interface for navigational receivers
First Claim
1. A method for reducing the start time of a navigational receiver, comprising:
- receiving approximate signal acquisition aiding parameters from a user; and
using the approximate signal acquisition aiding parameters to acquire navigation satellite signals.
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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.
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Citations
34 Claims
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1. A method for reducing the start time of a navigational receiver, comprising:
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receiving approximate signal acquisition aiding parameters from a user; and using the approximate signal acquisition aiding parameters to acquire navigation satellite signals. - View Dependent Claims (2, 3, 4, 10, 11, 12, 13, 14, 15, 16, 17)
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5. A method for reducing the start time of a navigational receiver, comprising:
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receiving approximate signal acquisition aiding parameters from a user, wherein the receiver includes a database of geographical locations and corresponding co-ordinates; using the approximate signal acquisition aiding parameters to acquire navigation satellite signals; having the user select a geographical location from the database; and using the co-ordinates in the database for the selected geographical location as an approximate location of the receiver to acquire the navigation satellite signals. - View Dependent Claims (6, 7, 8, 9)
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18. A navigational receiver, comprising:
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a user interface; satellite signal receiver section; and a processor coupled to the satellite signal receiving section and the user interface, wherein the processor is configured to receive approximate signal acquisition aiding parameters from a user via the user interface, and use ifie approximate signal acquisition aiding parameters to acquire satellite signals from ihe satellite signal receiver section. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification