Saving power in a GPS receiver by controlling domain clocking
First Claim
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1. A GPS receiver comprising:
- a domain adapted to receive a clock signal, wherein said domain corresponds to a portion of circuitry adapted to perform digital signal processing on a baseband digital representation of a received GPS signal; and
a controller adapted to provide said clock signal and control the power consumption of said domain by activating or deactivating said clock signal.
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Abstract
The controller of the present invention is incorporated in a global positioning system (GPS) receiver and operates to control the power consumed by the receiver by controlling the clocking of numerous domains. Each domain includes circuitry associated with different functions of the receiver. For example, the receiver of the present invention includes domains for each channel, where the channels are used to locate and track GPS signals. When one or more of the channels are not in use, the controller deactivates the clock signal to the one or more unused channels, thereby minimizing the power consumed by the receiver.
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14 Claims
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1. A GPS receiver comprising:
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a domain adapted to receive a clock signal, wherein said domain corresponds to a portion of circuitry adapted to perform digital signal processing on a baseband digital representation of a received GPS signal; and
a controller adapted to provide said clock signal and control the power consumption of said domain by activating or deactivating said clock signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification