Transmission and receiver system operating on different frequency bands
First Claim
1. A method for a device to generate analog audio signal from digital data delivered using radio frequency signal in two frequency bands, comprising:
- retrieving at least a portion of a first set of compressed digital audio data from the radio frequency signal of a first of the frequency bands and at least a portion of a second set of compressed digital audio data from a second of the frequency bands, the first and the second frequency bands being switched without user intervention;
storing the first and the second sets of compressed digital audio data in a storage system;
retrieving at least a portion of a third set of compressed digital audio data from the radio frequency signal of the first frequency band, the third set of compressed digital audio data not being stored into the storage system;
allowing a user to select one of the first, the second, and the third sets of compressed digital audio data;
decompressing the selected one of the first, the second, and the third sets of compressed digital audio data to generate a decompressed digital audio data; and
delivering the decompressed digital audio data to a digital to analog converter for conversion to the analog audio signal.
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Abstract
A receiver contains a demodulator system that can extract digital data from wireless radio frequency signal. The digital data contains three sets of compressed digital audio data. Two sets of compressed digital audio data are delivered in a first frequency band and the other set in a second frequency band. The set in the second frequency band and one of the sets in the first frequency band are stored in a memory system and the remaining set is not stored in the memory system. A user can select one of these three sets of compressed digital audio data for decompression and then converted to analog audio signal.
86 Citations
23 Claims
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1. A method for a device to generate analog audio signal from digital data delivered using radio frequency signal in two frequency bands, comprising:
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retrieving at least a portion of a first set of compressed digital audio data from the radio frequency signal of a first of the frequency bands and at least a portion of a second set of compressed digital audio data from a second of the frequency bands, the first and the second frequency bands being switched without user intervention; storing the first and the second sets of compressed digital audio data in a storage system; retrieving at least a portion of a third set of compressed digital audio data from the radio frequency signal of the first frequency band, the third set of compressed digital audio data not being stored into the storage system; allowing a user to select one of the first, the second, and the third sets of compressed digital audio data; decompressing the selected one of the first, the second, and the third sets of compressed digital audio data to generate a decompressed digital audio data; and delivering the decompressed digital audio data to a digital to analog converter for conversion to the analog audio signal. - 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)
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Specification