Apparatus and method for re-synthesizing signals
First Claim
1. An apparatus comprising:
- a receiver for receiving a plurality of digitally multiplexed signals, each digitally multiplexed signal associated with a different physical transmission channel, and for simultaneously recovering from at least two of the digital multiplexes a plurality of bit streams, said receiver including a sampler for sampling the signal to provide a plurality of decimated sample streams and a distributor operatively connected to said sampler for processing said plurality of decimated sample streams to provide output signals representative of said one or more different physical channels; and
a transmitter for inserting the plurality of bit streams into different digital multiplexes and for modulating the different digital multiplexes for transmission on different transmission channels,wherein said receiver includes a transform element including a first plurality of filters and said transmitter includes an inverse transform element including a second plurality of filters.
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Abstract
The disclosed embodiments relate to an apparatus and a method for re-synthesizing signals. The apparatus includes a receiver for receiving a plurality of digitally multiplexed signals, each digitally multiplexed signal associated with a different physical transmission channel, and for simultaneously recovering from at least two of the digital multiplexes a plurality of bit streams. The apparatus also includes a transmitter for inserting the plurality of bit streams into different digital multiplexes and for modulating the different digital multiplexes for transmission on different transmission channels. The method involves receiving a first signal having a plurality of different program streams in different frequency channels, selecting a set of program streams from the plurality of different frequency channels, combining the set of program streams to form a second signal, and transmitting the second signal.
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Citations
20 Claims
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1. An apparatus comprising:
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a receiver for receiving a plurality of digitally multiplexed signals, each digitally multiplexed signal associated with a different physical transmission channel, and for simultaneously recovering from at least two of the digital multiplexes a plurality of bit streams, said receiver including a sampler for sampling the signal to provide a plurality of decimated sample streams and a distributor operatively connected to said sampler for processing said plurality of decimated sample streams to provide output signals representative of said one or more different physical channels; and a transmitter for inserting the plurality of bit streams into different digital multiplexes and for modulating the different digital multiplexes for transmission on different transmission channels, wherein said receiver includes a transform element including a first plurality of filters and said transmitter includes an inverse transform element including a second plurality of filters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for re-synthesizing signals comprising:
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receiving a first signal having a plurality of different program streams in different frequency channels; selecting a set of program streams from said plurality of different frequency channels, wherein the step of selecting said set of program streams also includes decimating said first signal into a plurality of decimated sample streams and performing a transform on said plurality of decimated sample streams to provide said set of program streams; combining said set of program streams to form a second signal, wherein said step of combining said set of program streams includes performing an inverse transform on said set of program streams to provide a plurality of parallel decimated data streams and processing said plurality of parallel decimated data streams to provide said second signal; and transmitting said second signal. - View Dependent Claims (14, 15)
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16. An integrated circuit for use in a receiving system, which receives signals representing a plurality of channels, the integrated circuit comprising:
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a demultiplexing element for demultiplexing a received sampled signal to produce a plurality of first data streams; a transform element for performing a transform on said plurality of first data streams to produce a plurality of transform output signals, and for performing an inverse transform on at least two of a plurality of transform input signals to produce a plurality of second data streams; a bit stream processing element for processing said plurality of transform output signals to select a set of bit streams and to combine said selected bit streams into said at least two of a plurality transform input signals; and a multiplexing element for multiplexing said plurality of second data streams and outputting a sampled signal. - View Dependent Claims (17, 18, 19)
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20. An apparatus for re-synthesizing signals comprising:
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means for receiving a first signal having a plurality of bit streams from different frequency channels; means for decimating said first signal into a plurality of decimated sample streams; means for performing a transform on said plurality of decimated sample streams to provide a set of signals representing said first signal; means for selecting a set of bit streams from said set of signals; means for performing an inverse transform on said set of selected bit streams to provide a plurality of parallel decimated data streams; means for processing said plurality of parallel decimated data streams to provide a set of second data streams; means for combining said set of second data streams to form a second signal; and means for transmitting said second signal.
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Specification