Multidescriptive coding technique for multistream communication of signals
First Claim
1. Apparatus for communicating a signal over a plurality of communication channels, the signal including at least a first component and a second component, the apparatus comprising:
- a processor for generating at least a first representation and a second representation of the signal, the first representation containing first information concerning at least the first component, and second information concerning at least one coefficient for predicting the second component based on the first information, the second representation containing third information concerning at least the second component, and fourth information concerning at least one coefficient for predicting the first component based on the third information; and
an output device for transmitting the first representation and the second representation through the communication channels.
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0 Petitions
Accused Products
Abstract
In a digital audio broadcast system, to utilize transmission bandwidth efficiently, representations of a stereo audio signal for transmission are generated in accordance with an inventive multidescriptive coding technique. The representations, as generated, are then transmitted through multiple communication channels, respectively. The transmitted representations are received by a receiver where one or more of the representations are selected for recovery of the stereo audio signal. Because of the design of the multidescriptive coding used, the more representations are selected to recover the stereo audio signal, the higher the quality of the recovered signal.
29 Citations
46 Claims
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1. Apparatus for communicating a signal over a plurality of communication channels, the signal including at least a first component and a second component, the apparatus comprising:
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a processor for generating at least a first representation and a second representation of the signal, the first representation containing first information concerning at least the first component, and second information concerning at least one coefficient for predicting the second component based on the first information, the second representation containing third information concerning at least the second component, and fourth information concerning at least one coefficient for predicting the first component based on the third information; and an output device for transmitting the first representation and the second representation through the communication channels. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. Apparatus for recovering a signal including at least a first component and a second component, the apparatus comprising:
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a receiver for receiving at least a first representation and a second representation of the signal, the first representation containing first information concerning at least the first component, and second information concerning at least one coefficient for predicting the second component based on the first information, the second representation containing third information concerning at least the second component, and fourth information concerning at least one coefficient for predicting the first component based on the third information; and a processor for selecting use of at least one of the first representation and the second representation to recover the signal. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system for communicating a signal which includes at least a first component and a second component, the system comprising:
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a plurality of communication channels; a transmitter for transmitting at least a first representation and a second representation of the signal through the communication channels, the first representation containing first information concerning at least the first component, and second information concerning at least one coefficient for predicting the second component based on the first information, the second representation containing third information concerning at least the second component, and fourth information concerning at least one coefficient for predicting the first component based on the third information; and a receiver for recovering the signal based on at least a selected one of the first representation and the second representation. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A method for communicating a signal over a plurality of communication channels, the signal including at least a first component and a second component, the method comprising:
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generating at least a first representation and a second representation of the signal, the first representation containing first information concerning at least the first component, and second information concerning at least one coefficient for predicting the second component based on the first information, the second representation containing third information concerning at least the second component, and fourth information concerning at least one coefficient for predicting the first component based on the third information; and transmitting the first representation and the second representation through the communication channels. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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32. A method for recovering a signal including at least a first component and a second component, the method comprising:
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receiving at least a first representation and a second representation of the signal, the first representation containing first information concerning at least the first component, and second information concerning at least one coefficient for predicting the second component based on the first information, the second representation containing third information concerning at least the second component, and fourth information concerning at least one coefficient for predicting the first component based on the third information; and selecting use of at least one of the first representation and the second representation to recover the signal. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A method for communicating a signal over a plurality of communications channels, the signal including at least a first component and a second component, the method comprising:
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transmitting at least a first representation and a second representation of the signal through the communication channels, the first representation containing first information concerning at least the first component, and second information concerning at least a first coefficient for predicting the second component based on the first information, the second representation containing third information concerning at least the second component, and fourth information concerning at least a second coefficient for predicting the first component based on the third information; and recovering the signal based on at least a selected one of the first representation and the second representation. - View Dependent Claims (44, 45, 46)
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Specification