Digital audio receiver
First Claim
1. A receiver comprising:
- at least two RF tuner systems including a first RF tuner system and a second RF tuner system receiving signals from at least one antenna, the first RF tuner system being configured to filter and down-convert a satellite signal and the second RF tuner system being configured to filter and down-convert a terrestrial digital audio signal; and
a single base band decoding chip configured to process at least two channel decoding functions to decode and combine streams from each of the two RF tuner systems and to select information for presenting to a user interface, wherein the single base band decoding chip allows backward compatibility between the satellite signal and the terrestrial digital audio signal.
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Accused Products
Abstract
A digital audio broadcast receiver for a satellite audio broadcasting system may include two RF tuner systems and a single base band decoding chip. The two RF tuner systems may be configured to filter and down-convert signal from at least one antenna. The satellite tuner may down-convert a single carrier high level of modulation signal maximizing the data capacity compared to equivalent S-DARS systems. The single base band decoding chip configured to process at least two channel decoding functions to combine streams from each of the two RF tuner system and extract useful information for presenting to a user interface. The single base band decoding chip is based on a software driven DSP architecture topology that allows software upgrades and services and protocols evolution delaying the receiver hardware obsolescence.
55 Citations
27 Claims
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1. A receiver comprising:
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at least two RF tuner systems including a first RF tuner system and a second RF tuner system receiving signals from at least one antenna, the first RF tuner system being configured to filter and down-convert a satellite signal and the second RF tuner system being configured to filter and down-convert a terrestrial digital audio signal; and
a single base band decoding chip configured to process at least two channel decoding functions to decode and combine streams from each of the two RF tuner systems and to select information for presenting to a user interface, wherein the single base band decoding chip allows backward compatibility between the satellite signal and the terrestrial digital audio signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of providing satellite originated broadband data to a mobile user comprising:
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receiving a satellite originated data as a satellite signal and a terrestrial repeater signal;
processing at least two channel decoding functions on the satellite signal and the terrestrial repeater signal to decode and combine the satellite signal and the terrestrial repeater signal; and
selecting information from the processed signals for presenting to a user interface. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A system providing satellite originated data to a user comprising:
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means for receiving a satellite originated data as a satellite signal and a terrestrial repeater signal;
means for processing at least two channel decoding functions on the satellite signal and the terrestrial repeater signal to decode and combine the satellite signal and the terrestrial repeater signal; and
means for selecting information from the processed signals for presenting to a user interface. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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26. A computer readable medium containing executable instructions which, when executed in a processing system, cause the processing system to perform a method comprising:
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receiving a satellite originated data as a satellite signal and a terrestrial repeater signal;
processing at least two channel decoding functions on the satellite signal and the terrestrial repeater signal to decode and combine the satellite signal and the terrestrial repeater signal; and
selecting information from the processed signals for presenting to a user interface.
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27. A signal receiving system comprising:
a receiver comprising a direct conversion/zero intermediate frequency RF front-end topology including two RF tuner systems configured to filter and down-convert signal from at least one antenna, one of the two RF tuner systems configured to filter and down-convert a satellite signal and the other RF of the two RF tuner systems configured to filter and down-convert a terrestrial digital audio signal, and a software driven baseband decoding chip configured to process at least two channel decoding functions to decode and combine streams from each of the two RF tuner system and to select information for presenting to a user interface, wherein the receiver allows compatibility with a plurality of satellite digital audio radio services.
Specification