Method and apparatus for signal enhancement with improved digital filtering
First Claim
Patent Images
1. A filtering system comprising:
- input means for providing an input signal, said input signal having a plurality of input signal samples;
filter operator means for providing a filter operator signal, said filter operator signal having a plurality of operator signal samples;
output means for providing a filtered output signal, said filtered output signal having a plurality of output signal samples; and
update means for updating a plurality of the output signal samples provided by said output means in response to one of the input signal samples from said input means and the plurality of operator signal samples from said filter operator means.
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Abstract
A signal enhancement system is provided using an improved digital filtering apparatus and method. Enhanced performance and cost is achieved by processing signals on the fly in real time. Greater precision is achieved by providing compositing-after-correlation capability. Further improvements are achieved by separating and compositing a plurality of signals that are multiplexed together. Still further improvements are achieved with a filter implementation using charge coupled devices.
93 Citations
30 Claims
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1. A filtering system comprising:
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input means for providing an input signal, said input signal having a plurality of input signal samples; filter operator means for providing a filter operator signal, said filter operator signal having a plurality of operator signal samples; output means for providing a filtered output signal, said filtered output signal having a plurality of output signal samples; and update means for updating a plurality of the output signal samples provided by said output means in response to one of the input signal samples from said input means and the plurality of operator signal samples from said filter operator means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A filtering system comprising:
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sequential input means for generating a sequence of input signal samples; filter operator means for generating operator signal samples; processor means for processing each of the input signal samples from said sequential input means in sequence with a plurality of the operator signal samples from said filter operator means; output means for providing a plurality of output signal samples; and update means for updating the plurality of output signal samples provided with said output means in response to the processing with said processor means of each input signal sample from said sequential input means with the operator signal samples from said filter operator means. - View Dependent Claims (10, 11, 12)
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13. A digital filtering system comprising:
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input means for providing a plurality of sequential single-bit resolution input signal samples; filter operator means for providing a plurality of single-bit resolution filter operator signal samples; output means for providing a plurality of multi-bit resolution filtered output signal samples; and update means for updating the plurality of multi-bit resolution filtered output signal samples from said output means in response to each sequential single-bit resolution input signal sample from said input means and the plurality of single-bit resolution filter operator signal samples from said filter operator means. - View Dependent Claims (14, 15, 16)
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17. A multiple channel filter system comprising:
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input means for generating at least one input signal; multiple channel operator means for generating a plurality of channels of different filter operator signature signals, wherein the signature of the filter operator signature signal from each channel is different from the signature of the filter operator signature signal from each other channel; and filter means for generating a plurality of channels of filtered signals in response to the input signal from said input means and the plurality of channels of different filter operator signature signals from said multiple channel operator means. - View Dependent Claims (18, 19, 20, 21)
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22. A digital data processing system comprising:
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means for generating a first digital signal having a first multi-bit digital signal resolution; means for generating a second digital signal having a second multi-bit digital signal resolution; and means for generating a multi-bit output digital signal in response to the first digital signal from said first digital signal generating means and the second digital signal from said second digital signal generating means having an output multi-bit digital signal resolution being better than the first multi-bit digital signal resolution and the second multi-bit digital signal resolution.
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23. A signal processing apparatus comprising:
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means for generating a signature signal, said signal having a plurality of signature signal components; means for receiving a signature signal related to the generated signature signal; and means for processing the received signature signal to separate a plurality of signature signal components. - View Dependent Claims (24, 25)
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26. A signal processing apparatus comprising:
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means for generating a first signature signal; means for generating a second signature signal; means for generating a third signature signal to response to the first signature signal and in response to the second signature signal; and means for processing the third signature signal to separate a first signal component related to the first signature signal and to separate a second signal component related to the second signature signal. - View Dependent Claims (27, 28, 29)
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30. A data processing system comprising:
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input means for generating an input signal; signal processing means for generating a processed signal in response to the input signal; correlation means for generating a correlated signal in response to the processed signal; compositor means for generating a composited signal in response to the correlated signal; and output means for outputting the composited signal.
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Specification