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US 6,285,301 B1Granted
Prediction on data in a transmission system
AssigneeU.S. Philips Corporation
InventorsAlphons A. M. L. Bruekers, Renatus J. Van Der Vleuten
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Abstract
A digital information signal is compressed into an encoded signal and coefficient data. The coefficient data is predicted, yielding a prediction signal. The coefficient data and the prediction signal are combined to a data signal. Both the encoded signal and the data signal are transmitted via the transmission medium.
Claims29
A transmitter comprising:
- adaptive encoder means for adaptively compressing a digital information signal into an encoded signal and for generating a parameter signal the parameter signal containing parameters indicating the adaptations of the encoder, the adaptations depending on the contents of the digital information signal, the parameters being required to adapt an adaptive decoder for decompressing the adaptively encoded signal;
- a first signal combination means for combining the encoded signal and a representation of the parameter signal so as to obtain a transmission signal for transmission via a transmission medium;
- prediction filter means for deriving a prediction signal which is an approximation of the parameter signal;
- and
- a second signal combination unit for combining the prediction signal and the parameter signal so as to obtain the representation of the parameter signal.
2 more elements
A receiver comprising:
- receiving means for receiving a transmission signal from the transmission medium;
- demultiplexing means for deriving an encoded signal and a representation of a parameter signal from the transmission signal;
- adaptive decoder means for adaptively expanding the encoded signal into a digital information signal depending on a parameter signal, the parameter signal containing parameters indicating adaptations of the decoder required to decode the encoded signal, the adaptations depending on the contents of the digital information signal;
- a signal combination unit for combining the representation of the parameter signal and a prediction signal so as to form the parameter signal;
- and
- prediction filter means for deriving the prediction signal which is an approximation of the parameter signal.
3 more elements
A method of transmitting a signal comprising the steps of:
- receiving a digital information signal;
- adaptively compressing the digital information signal into an encoded signal;
- generating a parameter signal, the parameter signal containing parameters indicating the adaptations of the adaptive compressing, the adaptations depending on the contents of the digital information signal, the parameters being required for adaptively decompressing the encoded signal;
- combining the encoded signal and a representation of the parameter signal into a transmission signal;
- predictive filtering for deriving a prediction signal which is an approximation to the parameter signal;
- combining the prediction signal and the parameter signal so as to obtain the representation of the parameter signal;
- and
- transmitting the transmission signal via a transmission medium.
5 more elements
A transceiver comprising:
- adaptive encoder means for adaptively compressing a digital information signal into an encoded signal and for generating a parameter signal the parameter signal containing parameters indicating the adaptations of the encoder, the adaptations depending on the contents of the digital information signal, the parameters being required to adapt an adaptive decoder for decompressing the adaptively encoded signal;
- a first signal combination unit for combining the encoded signal and a representation of the parameter signal so as to obtain a transmission signal for transmission via a transmission medium;
- first prediction filter means for deriving a prediction signal which is an approximation of the parameter signal;
- a second signal combination unit for combining the prediction signal and the parameter signal to obtain the representation of the parameter signal;
- receiving means for receiving a transmission signal from the transmission medium;
- demultiplexing means for deriving an encoded signal and a representation of a parameter signal from the transmission signal;
- adaptive decoder means for adaptively expanding the encoded signal into a digital information signal depending on the parameter signal;
- a third signal combination unit for combining the representation of the parameter signal and a prediction signal so as to form the parameter signal;
- and
- second prediction filter means for deriving the prediction signal which is an approximation to the parameter signal.
7 more elements
Dependencies are inferred from the claim text.