Controller for a locked carrier distributed multiplexed telemetry system
US4494115A · kind A · utility
1Cited by
11References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 15, 1981 |
| Grant date | Jan 15, 1985 |
| Priority date | — |
| Expiry date | Jul 15, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q9/16
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A controller for a locked carrier distributed multiplexed telemetry system hich uses on-off switching of a d.c. power supply and a pilot signal generator at a remote control unit. A pilot signal from the remote control unit is amplified and rectified. The d.c. rectifier output, occurring only during the presence of the pilot signal, is sensed by a comparator which provides rapid transition pulses to advance a counter. The counter is advanced one count for each pilot signal cycle (on-off-on) and is reset for each d.c. power supply cycle (on-off-on). The devices to be controlled are connected to the output of the counter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.