Coded carrier remote control system
US3950728A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1974 |
| Grant date | Apr 13, 1976 |
| Priority date | — |
| Expiry date | Oct 8, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB61L7/088
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Synchronizing and coordination apparatus and circuit arrangement, at a junction terminal in a coded carrier remote control system where two branch communication channels diverge from the main channel from the control office, to establish and enforce a preselected order of priority for code transmission in both directions between the control office and stations connected along the main and branch channels. Each section of the channel network is provided with separate carrier apparatus to transmit codes in both directions. Retransmission means at the junction repeat control codes received from the office to all branch and satellite stations and indication codes received from these stations to the office office. Control codes from the office and indication codes from main channel stations are given first and second transmission priority, respectively. Indication codes from junction terminal satellite stations are third in priority order, over similar codes from stations along both branch channels. This is enforced by locking out such branch stations in response to the initiation of a code from a satellite station. Stations along a selected one branch are given the next order of priori…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.