SIGNAL ACQUIRING METHOD OF GPS RECEIVER AND DIGITAL CAMERA THEREOF
First Claim
1. A signal acquiring method of a global positioning system (GPS) receiver, for accelerating a signal acquiring speed of the GPS receiver, comprising:
- receiving a plurality of satellite signals;
performing a discrete cosine transform (DCT) demodulation procedure, to parse a receiving time base of the satellite signals;
transforming the satellite signals into a code information and a navigation frequency, according to the receiving time base of the satellite signals; and
performing a correlation correction procedure for acquiring a navigation information from the satellite signals, according to the code information and the navigation frequency.
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Accused Products
Abstract
A signal acquiring method of a GPS receiver and a digital camera thereof, suitable for accelerating a signal acquiring speed of the GPS receiver, are described. The signal acquiring method includes the following steps receiving a plurality of satellite signals; performing a discrete cosine transform (DCT) demodulation procedure, so as to parse a receiving time base of the satellite signals; next, transforming the satellite signals into a code information and a navigation frequency according to the receiving time base of the satellite signals; then, performing a correlation correction procedure to acquire a navigation information from the satellite signals according to the code information and the navigation frequency; which thus accelerates the processing speed on the signal acquiring flow through calculation characteristics of the DCT.
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Citations
6 Claims
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1. A signal acquiring method of a global positioning system (GPS) receiver, for accelerating a signal acquiring speed of the GPS receiver, comprising:
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receiving a plurality of satellite signals; performing a discrete cosine transform (DCT) demodulation procedure, to parse a receiving time base of the satellite signals; transforming the satellite signals into a code information and a navigation frequency, according to the receiving time base of the satellite signals; and performing a correlation correction procedure for acquiring a navigation information from the satellite signals, according to the code information and the navigation frequency. - View Dependent Claims (2, 3, 4)
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5. A digital camera provided with a signal acquiring process of a GPS, for accelerating a signal acquiring speed of the GPS receiver, comprising:
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a photographing module, for receiving a plurality of image data; a DCT module, electrically connected to the photographing module, and used to perform an image compression means on the image data received by the photographing module, thereby generating a corresponding compressed image; a GPS receiver, for receiving a plurality of satellite signals; and an arithmetic unit, electrically connected to the DCT module and the GPS receiver respectively, and used to perform a signal modulation means on the satellite signals, thereby parsing a receiving time base of the satellite signals and acquiring a navigation information from the satellite signals. - View Dependent Claims (6)
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Specification