System and method for conserving battery energy in a wireless telephone with an integral global positioning system
First Claim
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1. A wireless telephone for use in a wireless communications network, said wireless telephone comprising:
- a transceiver configured to establish and maintain communication with said wireless communications network;
a global positioning system (GPS) receiver configured to acquire short term and long term information used in making position determinations; and
a controller connected to the transceiver and the GPS receiver, said controller configured to periodically actuate the GPS receiver to acquire short term and long term information at selected time intervals and further configured to alter the time intervals of the periodic actuation of the GPS receiver and the acquisition of said short term and long term information responsive to the wireless telephone'"'"'s operating conditions.
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Accused Products
Abstract
A wireless telephone having a wireless communication transceiver, a global positioning system (GPS) receiver, and a controller connected to both the wireless communication transceiver and the GPS receiver, wherein the controller intelligently adapts its GPS data maintenance schedule according to a unique set of indicators derived from the wireless telephone'"'"'s operating conditions.
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Citations
24 Claims
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1. A wireless telephone for use in a wireless communications network, said wireless telephone comprising:
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a transceiver configured to establish and maintain communication with said wireless communications network; a global positioning system (GPS) receiver configured to acquire short term and long term information used in making position determinations; and a controller connected to the transceiver and the GPS receiver, said controller configured to periodically actuate the GPS receiver to acquire short term and long term information at selected time intervals and further configured to alter the time intervals of the periodic actuation of the GPS receiver and the acquisition of said short term and long term information responsive to the wireless telephone'"'"'s operating conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. In a wireless telephone powered by a battery and having a wireless communication transceiver responsive to a plurality of events for establishing and maintaining communication and a global positioning system (GPS) receiver that obtains short term and long term information for position calculations based in part on the short term and long term information, said GPS receiver having an "on" state where it draws battery power and an "off" state where it does not draw battery power, a method for preserving battery energy when said wireless telephone is in a standby mode while maintaining short term and long term information for making a prompt and accurate position determination, said method comprising:
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acquiring short term information at selected time intervals by; (a) changing said GPS receiver to said "on" state; (b) obtaining a set of short-term information measurements; (c) changing said GPS receiver to said "off" state; (d) repeating steps (a) through (c) at the selected time intervals; and altering time intervals based on events in the wireless telephone. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. In a wireless telephone powered by a battery and having a wireless communication transceiver responsive to a plurality of events for establishing and maintaining communication and a global positioning system (GPS) receiver that obtains short term and long term information for position calculations based in part on the short term and long term information, said GPS receiver having an "on" state where it draws battery power and an "off" state where it does not draw battery power, a method for preserving battery energy when said wireless telephone is in a standby mode while maintaining short term and long term information for making a rapid GPS position determination, said method comprising:
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acquiring long term information at selected time intervals by; (a) changing said GPS receiver to said "on" state; (b) obtaining long term information; (c) changing said GPS receiver to said "off" state; (d) repeating steps (a) through (c) at the selected time intervals; and altering the time intervals based on events in the wireless communication transceiver. - View Dependent Claims (22, 23, 24)
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Specification