Time zone based GPS date and time
First Claim
1. A method for determining a time zone based date and time from a Global Positioning System (GPS) signal comprising:
- receiving a time zone reference signal at a telematics device;
determining a local Coordinated Universal Time (UTC) correction from the time zone reference signal;
storing the local UTC correction; and
calculating local time from the local UTC correction and the GPS signal.
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Accused Products
Abstract
A system and method for determining a time zone based date and time from a Global Positioning System (GPS) signal, the method including receiving a time zone reference signal at a telematics device, determining a local Coordinated Universal Time (UTC) correction from the time zone reference signal, storing the local UTC correction, and calculating local time from the local UTC correction and the GPS signal. In one embodiment, the time zone reference signal is the GPS signal. In an alternative embodiment, the time zone reference signal is a Code Division Multiple Access (CDMA) signal. In yet another alternative embodiment, the method includes scheduling mobile vehicle communication system activities based on the local time.
54 Citations
20 Claims
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1. A method for determining a time zone based date and time from a Global Positioning System (GPS) signal comprising:
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receiving a time zone reference signal at a telematics device;
determining a local Coordinated Universal Time (UTC) correction from the time zone reference signal;
storing the local UTC correction; and
calculating local time from the local UTC correction and the GPS signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for determining a time zone based date and time from a Global Positioning System (GPS) signal comprising:
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means for receiving a time zone reference signal at a telematics device;
means for determining a local Coordinated Universal Time (UTC) correction from the time zone reference signal;
means for storing the local UTC correction; and
means for calculating local time from the local UTC correction and the GPS signal. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A computer readable medium storing a computer program for determining a time zone based date and time from a Global Positioning System (GPS) signal, the computer program comprising:
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computer readable code for receiving a time zone reference signal at a telematics device;
computer readable code for determining a local Coordinated Universal Time (UTC) correction from the time zone reference signal;
computer readable code for storing the local UTC correction; and
computer readable code for calculating local time from the local UTC correction and the GPS signal. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification