Communications system with priority scheme for reduced access de

Details Communications system with priority scheme for reduced access de Communications system with priority scheme for reduced access de

1995-10-16

1997-10-28

Pham, Chi H.

Telecommunications

Transmitter and receiver at separate stations

455 541, 34082508, 370346, 370449, H04B 726

Patent

active

056826044

ABSTRACT:
A communications system is described having a central station and a number of remote units arranged for communication over a common communications channel. Each remote unit has a predetermined priority parameter and each remote unit has a processor element (30), a receiver (28), a channel monitoring circuit (26) for sensing when the channel is free and a transmitter (29). The processor element is arranged to identify from received data a priority parameter of a unit currently transmitting. A comparison is performed between the priority parameter of that unit and the predetermined priority parameter, to initiate a timer function (108) in response to the channel monitoring circuit when the channel monitoring circuit indicates that the channel has become free, and to reset the timer function if the channel monitor circuit indicates that the channel has become occupied. The timer function times a selectable period which is dependent on the comparison and the timer function causes activation of the transmitter when the timer function times the selectable period. The invention is applicable to, but not limited to use in supervisory control and acquisition-of-data (SCADA) systems.

REFERENCES:
patent: 5150114 (1992-09-01), Johansson

Affiliated with

Also associated with

Rating

Communications system with priority scheme for reduced access de does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Communications system with priority scheme for reduced access de, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Communications system with priority scheme for reduced access de will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1033467