GPS processing arrangement
First Claim
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1. A software GPS processing arrangement comprisinga FIFO buffer for receiving a stream of the GPS signal samples;
- a memory;
a DMA controller for transferring the GPS signal samples from the FIFO buffer to the memory;
a CPU configured for running GPS signal processing software configured to retrieve the GPS signal samples from the memory and process them to obtain a position fix; and
a counter configured for operating independently of the DMA controller and the CPU and for keeping count of the number of streamed GPS signal samples by incrementing a count in response to a frame signal indicating a word boundary in the stream of GPS signal samples.
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Abstract
A software GPS processing arrangement comprising a FIFO buffer for receiving a stream of the GPS signal samples, a memory, a DMA controller for transferring the GPS signal samples from the FIFO buffer to the memory, a CPU running GPS signal processing software configured to retrieve the GPS signal samples from the memory and process them to obtain a position fix, and a counter operating independently of the DMA controller and the CPU for keeping count of the number of streamed GPS signal samples.
70 Citations
9 Claims
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1. A software GPS processing arrangement comprising
a FIFO buffer for receiving a stream of the GPS signal samples; -
a memory; a DMA controller for transferring the GPS signal samples from the FIFO buffer to the memory; a CPU configured for running GPS signal processing software configured to retrieve the GPS signal samples from the memory and process them to obtain a position fix; and a counter configured for operating independently of the DMA controller and the CPU and for keeping count of the number of streamed GPS signal samples by incrementing a count in response to a frame signal indicating a word boundary in the stream of GPS signal samples. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification