Modulated interface for remote signals
US6401046B1 · kind B1 · utility
0Cited by
13References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1999 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Sep 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C19/22
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A circuit 17 for interfacing with a sensor 18 having a sensor input current and a modulated sensor current signal corresponding to a sensed condition. A control module 20 is coupled to the sensor 18 and receives the sensor current signal. The control module 20 converts the sensor current signal to a modulated signal having a pulse width with a duration corresponding to the sensed condition. The control module 20 counts a time corresponding to the pulse width. The time corresponds to the sensed condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.