Communications: radio wave antennas – Antennas – Balanced doublet - centerfed
Patent
1975-10-14
1977-03-22
Safourek, Benedict V.
Communications: radio wave antennas
Antennas
Balanced doublet - centerfed
343177, H04J 312
Patent
active
040139581
ABSTRACT:
A communication system apparatus and method for increasing the number of users accommodated by one or more communication channels. Time sharing of the one or more communication channels by a plurality of separate groups of users is provided as a function of user access demand, and channel occupancy. The one or more communication channels are periodically sampled by the user apparatus for detection of signals present on the channels whereby the occupancy status of each one of the scanned channels is determined. Transmission of signals from the user apparatus on each individual one of the channels detected as occupied by other users, is prevented for a predetermined length of time after each said detection of occupancy. Transmission of signals from the user apparatus is permitted on the channels detected as clear or unoccupied. The apparatus additionally provides for detection of each channel having signals addressed to the user and for transmission of reply signals from the user on the detected channel. The described system requires no central control station and is not dependent upon the use of special signals transmitted from an active user apparatus for marking an occupied channel. Some or all of the communication channels of the system can be used in common with other existing and conventional communication systems without resulting in interference with the existing communication system.
REFERENCES:
patent: 3173996 (1965-03-01), Rypinski, Jr.
patent: 3535636 (1970-10-01), Muilwijk
patent: 3631497 (1971-12-01), Leonard
patent: 3688195 (1972-08-01), Muller
patent: 3707679 (1972-12-01), Bruley
Barbee Joe
Briody Thomas
Safourek Benedict V.
Streeter William J.
The Magnavox Company
LandOfFree
Sampled communication system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Sampled communication system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sampled communication system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1958605