Switch noise reduction device and method using counter
US7847614B2 · kind B2 · utility
6Cited by
13References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 30, 2007 |
| Grant date | Dec 7, 2010 |
| Priority date | — |
| Expiry date | Nov 12, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/1254
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A switch de-bouncing device includes a majority counter that counts samples generated by a sampler sampling a switch output where a counter value is incremented for each sample indicating a first switch state and decremented for each sample indicating a second switch state of the switch. A controller determines that the switch is in the first switch state when the counter value is above a first state threshold and is in the second switch state when the counter value is below a second state threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.