Shared circuitry for GPS and local area network systems
First Claim
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1. A Global Positioning System (GPS) receiver for determining geolocation from at least one GPS satellite, the GPS receiver being capable of receiving a GPS signal comprising a spread spectrum radio frequency signal, the GPS receiver comprising:
- a downconverter section for converting time spread spectrum radio frequency signals from a transmitted frequency to a lower frequency; and
a processor section, for processing the lower frequency signals to determine the geolocation of the GPS receiver, wherein at least one of the downconverter section and the processor section utilizes circuitry that is shared between the GPS signal and a Local Area Network (LAN) frequency signal that carries an augmentation to the GPS receiver and the geolocation of the GPS receiver is determined with the lower frequency signal obtained from the GPS signal received from a GPS satellite along with the augmentation when the GPS receiver is unable to acquire sufficient numbers of GPS satellites to determine time geolocation of the OPS receiver.
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Reexamination
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Abstract
The present invention discloses a method, system, and apparatus for sharing circuitry within mobile GPS and Bluetooth receivers. By selectively combining the downconversion, processing, and control sections, lower power dissipation can be achieved, along with lower form factors and lower manufacturing costs.
27 Citations
19 Claims
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1. A Global Positioning System (GPS) receiver for determining geolocation from at least one GPS satellite, the GPS receiver being capable of receiving a GPS signal comprising a spread spectrum radio frequency signal, the GPS receiver comprising:
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a downconverter section for converting time spread spectrum radio frequency signals from a transmitted frequency to a lower frequency; and a processor section, for processing the lower frequency signals to determine the geolocation of the GPS receiver, wherein at least one of the downconverter section and the processor section utilizes circuitry that is shared between the GPS signal and a Local Area Network (LAN) frequency signal that carries an augmentation to the GPS receiver and the geolocation of the GPS receiver is determined with the lower frequency signal obtained from the GPS signal received from a GPS satellite along with the augmentation when the GPS receiver is unable to acquire sufficient numbers of GPS satellites to determine time geolocation of the OPS receiver. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A Global Positioning System (GPS) receiver for determining geolocation, the GPS receiver being capable of receiving a GPS signal comprising a spread spectrum radio frequency signal from at least one GPS satellite, the GPS receiver comprising:
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a downconverter section for converting the spread spectrum radio frequency signals from a transmitted frequency to a lower frequency; a processor section, for processing the lower frequency signals of the GPS receiver; and a transmitter section, wherein the downconverter section and the processor section utilize circuitry that is shared between the GPS signal and a Local Area Network (LAN) signal where Local Area Network provides augmentations to the GPS receiver that is used along with the GPS signal to determine the geolocation of the GPS when sufficient GPS signals are unavailable to determine fine geolocation of the GPS receiver. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification