Method and apparatus for determining a position of a movable barrier
US6878927B2 · kind B2 · utility
1Cited by
16References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 2004 |
| Grant date | Apr 12, 2005 |
| Priority date | — |
| Expiry date | Mar 4, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/282
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A movable barrier operator includes an absolute position detector which provides a unique value for each position of the barrier along its path of travel. The absolute position detector employs multiple binary serial streams and one multiple clock stream. After the first five cycles of the clock stream, the binary streams can be decoded by a processor to produce an absolute position. Every clock edge produces a new absolute position along the path of travel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.