Method and device for filtering input signals
US6738441B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 5, 2000 |
| Grant date | May 18, 2004 |
| Priority date | — |
| Expiry date | Jul 30, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/1252
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and device for filtering an input signal received by an input module in order to produce a filtered input signal, wherein the received input signal is converted such that it has either a HIGH input state or a LOW input state each having a time duration characteristic of the input module, and the filtered input signal is represented by an ON filtered state and an OFF filtered state. The time duration of the HIGH input state and the LOW input state are determined by sampling the converted input signal at a certain sampling rate so as to allow the sampling results to be used by a filtering algorithm to set the filtered input state to ON or OFF based on a set of filter parameters which may vary from one input module to another. The filtering device is adapted to be configurable such that the filter parameters can be electronically selected so that the same filtering algorithm can be used for different input modules having different electrical characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.