Signal processing method and apparatus
AssigneeMirada Medical Limited
InventorsTimor Kadir, John Michael Brady
Life of this patent
Estimating the term…
Abstract
A signal processing method that includes inputting sample values of a signal and considering the signal to have a plurality of portions. For each portion, a predetermined function is fitted to the sample values of that portion of the signal by calculating values of coefficients for that predetermined function. At least one statistical information function is evaluated for the signal to determine statistical information about the signal and the calculated coefficient values are used so that the form of the statistical information function has been determined for the predetermined function used to fit the signal portion and further includes using the statistical information obtained about the signal to process the signal.
Claims15
A signal processing method comprising:
- inputting sample values, into a hardware memory of a computer, of a band-limited signal;
- considering the signal to comprise a plurality of portions;
- wherein the signal processing method is characterised for each portion of the signal by:
- a) fitting a predetermined interpolating or approximating function to the sample values of the portion of the signal, by calculating values of coefficients for the predetermined interpolating or approximating function, the interpolating or approximating function approximating a reconstruction of the portion of the signal;
- and
- b) evaluating a statistical information function using the calculated coefficient values, to determine statistical information sought for the portion of the signal, wherein the statistical information function is an analytic solution for:
- (i) the statistical information;
- and
- (ii) the predetermined interpolating or approximating function;
- using the statistical information obtained about the signal to process the signal.
A signal processing apparatus comprising:
- an input module, on a hardware computer system, that receives sample values of a band-limited signal;
- an analysis module, on the hardware computer system, for considering portions of the signal;
- wherein the signal processing apparatus is characterised in that, for each portion of the signal, the analysis module is adapted to:
- a) calculate values of coefficients for fitting a predetermined interpolating or approximating function to the sample values of that portion of the signal, the interpolating or approximating function approximating a reconstruction of the portion of the signal;
- and
- b) evaluate a statistical information function using the calculated coefficient values, to determine statistical information sought for the portion of the signal, wherein the statistical information function is an analytic solution for:
- (i) the statistical information;
- and
- (ii) the predetermined interpolating or approximating function;
- further comprising a processing module that uses the statistical information obtained about the signal by the analysis module to process the signal.
Dependencies are inferred from the claim text.