Signal transmission arrangment, a transmitter and a receiver for such an arrangement and a communication system including such an arrangement
US4723237A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 1986 |
| Grant date | Feb 2, 1988 |
| Priority date | — |
| Expiry date | May 6, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B14/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A communication system comprises a plurality of subscriber stations (51-1 to 51-n) each of which comprise a transmitter (3) and a receiver (4). A switching network comprising a selection switch (57) and a synchronous digital switching network (60) is connected to the subscriber stations (51-1 to 51-n) via separating and combining circuits (52-1 to 52-n) each of which comprise a transmitter (3) a receiver(4) and an interface unit (55). The transmitter (3) transmits a signal comprising a square wave frequency modulated signals which is modulated by a wideband (video) signal, on transitions of which short or long pulses are initiated in response to a data signal. The wideband and data signals are separated in the separating and combining circuits (52-1 to 52 -n) to enable the wideband and data signals to be separately processed in the switching networks (57,60).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.