Repetitive noise cancelation
US10305458B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2018 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Mar 27, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2005/0015
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Certain aspects of the present disclosure provide an apparatus for noise cancellation. One example apparatus generally includes a first delay path and a second delay path, each providing signals generated by applying a different delay to an input signal, and a first comparator having a first input coupled to the first delay path and a second input coupled to the second delay path. The apparatus also includes a switching circuit having a control input coupled to an output of the first comparator, the switching circuit configured to selectively couple the first delay path or the second delay path to an output node of the switching circuit based on a signal at the control input. The apparatus also includes an attenuation circuit having a first input coupled to an input path for providing the input signal, and a second input coupled to the output node of the switching circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.