System and method for receiving digital satellite radio and GPS
First Claim
1. A combined Global Positioning System (“
- GPS”
) and radio system for receiving GPS signals and radio signals, the combined GPS and radio system comprising;
a switchable frequency source to generate a frequency reference signal having a first switch state of operation that corresponds to receiving GPS signals and a second switch state of operation that corresponds to receiving radio signals;
a mixer in signal communication with the switchable frequency source, the mixer is capable of receiving both GPS signals and radio signals and producing corresponding intermediate frequency (“
IF”
) signals in response to receiving the frequency reference signal; and
a controller to control the switchable frequency source to periodically switch between the first switch state of operation and the second switch state of operation at a duty cycle determined to resolve a position of the combined GPS and radio system based on the received GPS signals.
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0 Petitions
Accused Products
Abstract
A combined Global Position System (“GPS”) and radio system for receiving GPS signals and radio signals is disclosed. The combined GPS and radio system includes a controller that controls a switchable frequency source and a mixer in signal communication with the switchable frequency source. The mixer is capable of receiving both GPS signals and radio signals and producing corresponding intermediate frequency (“IF”) signals in response to receiving a frequency reference signal from the switchable frequency source that has a first switch state of operation that corresponds to the mixer receiving GPS signals and a second switch state of operation the corresponds to the mixer receiving radio signals.
29 Citations
86 Claims
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1. A combined Global Positioning System (“
- GPS”
) and radio system for receiving GPS signals and radio signals, the combined GPS and radio system comprising;a switchable frequency source to generate a frequency reference signal having a first switch state of operation that corresponds to receiving GPS signals and a second switch state of operation that corresponds to receiving radio signals; a mixer in signal communication with the switchable frequency source, the mixer is capable of receiving both GPS signals and radio signals and producing corresponding intermediate frequency (“
IF”
) signals in response to receiving the frequency reference signal; anda controller to control the switchable frequency source to periodically switch between the first switch state of operation and the second switch state of operation at a duty cycle determined to resolve a position of the combined GPS and radio system based on the received GPS signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
- GPS”
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32. A method for receiving Global Position System (“
- GPS”
) signals and radio signals in a combined GPS and radio system, the method comprising;receiving either GPS signals or the radio signals; receiving a frequency reference signal from a switchable frequency source having a first state of operation corresponding to GPS signals and a second state of operation corresponding to radio signals; controlling the switchable frequency source to periodically switch between the first switch state of operation and the second switch state of operation at a duty cycle determined to resolve a position of the combined GPS and radio system based on the received GPS signals; and producing intermediate frequency (“
IF”
) signals in response to receiving GPS signals, radio signals and frequency reference signal. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
- GPS”
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51. A combined Global Positioning System (“
- GPS”
) and radio system for receiving GPS signals and radio signals the combined GPS and radio system comprising;means for generating a frequency reference signal that has a first switch state of operation that corresponds to the receiving GPS signals and a second switch state of operation that corresponds to the receiving means receiving radio signals; means for controlling the combined GPS and radio system to periodically switch between the first switch state of operation and the second switch state of operation at a duty cycle determined to resolve a position of the combined GPS and radio system based on the received GPS signals; and means for receiving both GPS signals and radio signals and producing corresponding intermediate frequency (“
IF”
) signals in response to receiving the frequency reference signal from the switchable frequency source. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72)
- GPS”
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73. A non-transitory signal bearing medium having software for receiving Global Position System (“
- GPS”
) signals and radio signals in a combined GPS and radio system, the signal-bearing medium comprising;logic for receiving either GPS signals or the radio signals; logic for receiving a frequency reference signal from a switchable frequency source having a first state of operation corresponding to GPS signals and a second state of operation corresponding to radio signals; controlling the switchable frequency source to periodically switch between the first switch state of operation and the second switch state of operation at a duty cycle determined to resolve a position of the combined GPS and radio system based on the received GPS signals; and logic for producing intermediate frequency (“
IF”
) signals in response to receiving GPS signals, radio signals and frequency reference signals. - View Dependent Claims (74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86)
- GPS”
Specification