Signal processors and methods for estimating transformations between signals with phase estimation
US8867860B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2011 |
| Grant date | Oct 21, 2014 |
| Priority date | — |
| Expiry date | Dec 19, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/754
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Signal processing devices and methods estimate transforms between signals, and in particular, utilize techniques for estimating phase between a reference signal and a suspect signal. A phase estimation method estimates the phase of reference signal components in a suspect signal using a point spread function. The method provides a set of feature locations representing a discrete reference signal, applies a transform to the reference signal to provide a set of transformed locations, and then uses a point spread function to sample phase from the suspect signal at discrete sample locations in a neighborhood around the transformed locations. This process provides an estimate of phase of the suspect signal at locations corresponding to the transformed locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.