In a multiplex system, a multiplexer is arranged to pulse amplitude modulate a plurality of data channels and to time division multiplex the pulse amplitude modulated data channels using a synchronising pulse to separate each channel's time slot from adjacent time slots. The invention also provides a pulse modulating channel switch, and a demultiplexer.
申请公布号
WO9119370(A2)
申请公布日期
1991.12.12
申请号
WO1991GB00847
申请日期
1991.05.28
申请人
FLETCHER, ALAN;FLETCHER, PHYLLIS, MARGARET;DAVISON, DERRICK, COLIN;VARCIANNA, HARRY, JAMES