Nonlinear filter
AssigneeOptichron, Inc.
InventorRoy G. Bartuni
Life of this patent
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Abstract
A system and method are disclosed for a nonlinear filter having a nonlinear transfer function. The nonlinear filter comprises a plurality of linear filters each having a filter output, a plurality of nonlinear elements each connected to one of the plurality of linear filters, and a combination network connected to the plurality of nonlinear elements. The nonlinear elements are used to produce nonlinear effects and generate a plurality of nonlinear outputs, and the combination network combines the nonlinear outputs.
Claims22
A nonlinear filter having a nonlinear transfer function comprising:
- a plurality of linear filters each having a filter output;
- a plurality of nonlinear elements each connected to one of the plurality of linear filters;
- and
- a combination network connected to the plurality of nonlinear elements;
- wherein:
- the nonlinear elements are used to produce nonlinear effects and generate a plurality of nonlinear outputs;
- the combination network combines the nonlinear outputs;
- and
- the combination network comprises a min-max selection network.
A nonlinear filter, having a nonlinear transfer function comprising:
- a plurality of linear filters each having a filter output;
- a plurality of nonlinear elements each connected to one of the plurality of linear filters;
- and
- a combination network connected to the plurality of nonlinear elements;
- wherein:
- the nonlinear elements are used to produce nonlinear effects and generate a plurality of nonlinear outputs;
- the combination network combines the nonlinear outputs;
- and
- the nonlinear transfer function includes a first order polynomial.
A nonlinear filter having a nonlinear transfer function comprising:
- a plurality of linear filters each having a filter output;
- a plurality of nonlinear elements each connected to one of the plurality of linear filters;
- and
- a combination network connected to the plurality of nonlinear elements;
- wherein:
- the nonlinear elements are used to produce nonlinear effects and generate a plurality of nonlinear outputs;
- the combination network combines the nonlinear outputs;
- and
- the nonlinear transfer function is a first nonlinear transfer function that includes a first order polynomial;
- and the first nonlinear transfer function approximates a second nonlinear transfer function that includes a higher order polynomial.
A nonlinear filter having a nonlinear transfer function comprising:
- a plurality of linear filters each having a filter output;
- a plurality of nonlinear elements each connected to one of the plurality of linear filters;
- and
- a combination network connected to the plurality of nonlinear elements;
- and
- an averaging filter that provides an average value for the nonlinear transfer function;
- wherein:
- the nonlinear elements are used to produce nonlinear effects and generate a plurality of nonlinear outputs;
- the combination network combines the nonlinear outputs.
A nonlinear filter having a nonlinear transfer function comprising:
- a plurality of linear filters each having a filter output;
- a plurality of nonlinear elements each connected to one of the plurality of linear filters;
- and
- a combination network connected to the plurality of nonlinear elements;
- wherein:
- the nonlinear elements are used to produce nonlinear effects and generate a plurality of nonlinear outputs;
- the combination network combines the nonlinear outputs;
- and
- each of the linear filters has linear filter parameters that are derived using least mean square fit.
A nonlinear filter having a nonlinear transfer function comprising:
- a plurality of linear filters each having a filter output;
- a plurality of nonlinear elements each connected to one of the plurality of linear filters;
- and
- a combination network connected to the plurality of nonlinear elements;
- wherein:
- the nonlinear elements are used to produce nonlinear effects and generate a plurality of nonlinear outputs;
- the combination network combines the nonlinear outputs;
- and
- each of the linear filters has linear filter parameters that are derived using back propagation.
A nonlinear filter having a nonlinear transfer function comprising:
- a plurality of nonlinear filters each having a filter output;
- a plurality of nonlinear elements each connected to one of the plurality of linear filters;
- and
- a combination network connected to the plurality of nonlinear elements;
- wherein:
- the nonlinear elements are used to produce nonlinear effects and generate a plurality of nonlinear outputs;
- the combination network combines the nonlinear outputs;
- and
- the nonlinear transfer function is multidimensional.
A method for providing a nonlinear output comprising:
- receiving an input signal;
- sending the input signal to a plurality of linear filters having a plurality of filter outputs;
- sending the filter outputs to a plurality of nonlinear elements used to generate a plurality of nonlinear outputs;
- and
- combining the nonlinear outputs using a combination network that comprises a min-max selection network.
A computer program product for producing a nonlinear output, the computer program product being embodied in a computer readable medium and comprising computer instructions for:
- receiving an input signal;
- sending the input signal to a plurality of linear filters having a plurality of filter outputs;
- sending the filter outputs to a plurality of nonlinear elements used to generate a plurality of nonlinear outputs;
- and
- combining the nonlinear outputs using a combination network that comprises a min-max selection network.
Dependencies are inferred from the claim text.