Method and apparatus for a global navigation satellite system receiver coupled to a host computer system
First Claim
1. A global navigation satellite system receiver apparatus configured for operative coupling to a host computer system, the global navigation satellite system receiver apparatus comprising:
- a) a navigation interface module configured to receive a host time signal from the host computer system during a navigation operation, the navigation interface module further configured to provide a navigation time signal based on at least the host time signal during said navigation operation, wherein the host time signal comprises a first indication of time in a first prespecified format, and wherein the navigation time signal comprises a second indication of time in the first prespecified format or a second prespecified format based at least in part on the first indication of time; and
b) a satellite signal receiver module configured to use the navigation time signal to facilitate determination of a global time signal through reception of satellite signals during said navigation operation;
wherein the global time signal is provided to the navigation interface module during an update operation, the navigation interface module configured to use at least the global time signal to configure one or more adjustments during said update operation, said one or more adjustments configured to facilitate future navigation operations.
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Abstract
The present invention provides a global navigation satellite system (GNSS) receiver apparatus, such as a GPS receiver, operable with a host computer system equipped with a real time clock configured to provide a time signal to the GNSS receiver apparatus. The time signal is used to facilitate acquisition of navigation and global timing information through observation of satellite signals. The global timing information is used to adjust the time signal and/or the real time clock to improve subsequent acquisitions of navigation and global timing information.
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Citations
34 Claims
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1. A global navigation satellite system receiver apparatus configured for operative coupling to a host computer system, the global navigation satellite system receiver apparatus comprising:
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a) a navigation interface module configured to receive a host time signal from the host computer system during a navigation operation, the navigation interface module further configured to provide a navigation time signal based on at least the host time signal during said navigation operation, wherein the host time signal comprises a first indication of time in a first prespecified format, and wherein the navigation time signal comprises a second indication of time in the first prespecified format or a second prespecified format based at least in part on the first indication of time; and b) a satellite signal receiver module configured to use the navigation time signal to facilitate determination of a global time signal through reception of satellite signals during said navigation operation; wherein the global time signal is provided to the navigation interface module during an update operation, the navigation interface module configured to use at least the global time signal to configure one or more adjustments during said update operation, said one or more adjustments configured to facilitate future navigation operations. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A global navigation satellite system receiver apparatus configured for operative coupling to a host computer system, the global navigation satellite system receiver apparatus comprising:
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a) a navigation interface module configured to receive a host time signal from the host computer system during a navigation operation, the navigation interface module further configured to provide a navigation time signal based on at least the host time signal during said navigation operation; and b) a satellite signal receiver module configured to use the navigation time signal to facilitate determination of a global time signal through reception of satellite signals during said navigation operation; wherein the global time signal is provided to the navigation interface module during an update operation, the navigation interface module configured to use at least the global time signal to configure one or more adjustments during said update operation, said one or more adjustments configured to facilitate future navigation operations, and wherein the navigation interface module further comprises a time signal adjustment module, the time signal adjustment module configured to derive the navigation time signal from the host time signal based on a parameterized time derivation procedure. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of operating a global navigation satellite system receiver apparatus operatively coupled to a host computer system, the method comprising:
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a) performing a navigation operation, the navigation operation comprising; i) providing a navigation time signal based on at least a host time signal from the host computer, wherein the host time signal comprises a first indication of time in a first prespecified format, and wherein the navigation time signal comprises a second indication of time in the first prespecified format or a second prespecified format based at least in part on the first indication of time; ii) using the navigation time signal to perform a satellite signal reception operation; and iii) determining a global time signal at least in part based on information obtained from the satellite signal reception operation; and b) using at least the global time signal to perform one or more adjustments to facilitate future navigation operations. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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25. A method of operating a global navigation satellite system receiver apparatus operatively coupled to a host computer system, the method comprising:
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a) performing a navigation operation, the navigation operation comprising; i) providing a navigation time signal based on at least a host time signal from the host computer system; ii) using the navigation time signal to perform a satellite signal reception operation; and iii) determining a global time signal at least in part based on information obtained from the satellite signal reception operation; and b) using at least the global time signal to perform one or more adjustments to facilitate future navigation operations; wherein the navigation time signal is derived from the host time signal based on a parameterized time derivation procedure. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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33. A global navigation satellite system (GNSS) enabled system comprising:
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a) a host computer module operatively coupled to a host real time clock, the host real time clock configured to provide a host time signal; and b) a global navigation satellite system receiver apparatus operatively coupled to the host computer module, the global navigation satellite system receiver apparatus comprising; i) a navigation interface module configured to receive the host time signal during a navigation operation, the navigation interface module further configured to provide a navigation time signal based on at least the host time signal during said navigation operation, wherein the host time signal comprises a first indication of time in a first prespecified format, and wherein the navigation time signal comprises a second indication of time in the first prespecified format or a second prespecified format based at least in part on the first indication of time; and ii) a satellite signal receiver module configured to use the navigation time signal to facilitate determination of a global time signal through reception of satellite signals during said navigation operation; wherein the global time signal is provided to the navigation interface module during an update operation, the navigation interface module configured to use at least the global time signal to configure one or more adjustments during said update operation, said one or more adjustments configured to facilitate future navigation operations.
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34. A global navigation satellite system (GNSS) enabled system comprising:
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a) a host computer module operatively coupled to a host real time clock, the host real time clock configured to provide a host time signal; and b) a global navigation satellite system receiver apparatus operatively coupled to the host computer module, the global navigation satellite system receiver apparatus comprising; i) a navigation interface module configured to receive the host time signal during a navigation operation, the navigation interface module further configured to provide a navigation time signal based on at least the host time signal during said navigation operation, wherein the navigation time signal is derived from the host time signal based on a parameterized time derivation procedure; and ii) a satellite signal receiver module configured to use the navigation time signal to facilitate determination of a global time signal through reception of satellite signals during said navigation operation; wherein the global time signal is provided to the navigation interface module during an update operation, the navigation interface module configured to use at least the global time signal to configure one or more adjustments during said update operation, said one or more adjustments configured to facilitate future navigation operations.
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Specification