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6078786 |
Method and device for measuring the distance between two stations connected by a communications channel
The invention relates to a method and a device for distance measuring between two stations (A1, B1) connected by a communication channel. The method is based on a command structure, wherein the...
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5822314 |
Communications system and method of operation
A method of operation of a communications system, having first (10) and second communications units (12) communicating frame divided information via a relay device (11). The second communications...
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5790939 |
Method and system of frame timing synchronization in TDMA based mobile satellite communication system
A method and system for synchronizing transmission TDMA frames in a mobile satellite communication system are disclosed herein. The method of synchronizing a transmitted frame timing in a mobile...
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5701582 |
Method and apparatus for efficient transmissions of programs
A system and method of optimizing transmission of a program to multiple users over a distribution system, with particular application to video-on-demand for a CATV network. The system includes, at...
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5613195 |
Burst output timing control system in satellite communication system
In a method for controlling a burst output timing in a satellite communication system for performing radio communication between a central earth station and a plurality of remote earth stations via...
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4792963 |
Satellite clock system
A satellite clock system in which the frequency of the onboard satellite clock, which is implemented as a relatively high uncertainty voltage-controlled oscillator, is corrected in accordance with...
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4761799 |
Time-locking method for stations which form part of a local star network, and local star network for performing the time-locking method
A time-locking method for stations which form part of a local star network in a multiplex data transmission system in which the exchanges between stations are organized in a single frame permitting...
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4748622 |
Satellite communication system
A satellite communication among a plurality of small earth stations (very small aperture terminal;VSAT) through a satellite is performed by using a relay earth station which has higher power than a...
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4599720 |
Satellite communications system
Distributed transmission control for a TDMA system including one or more user networks. A time synchronized burst modem, one at each earth station in a system, transfers TDMA frame timing signals...
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4574379 |
Synchronization technique for non-colocated TV signals in a TDMA satellite communication system
The present invention relates to a technique for the synchronization of multiplexed television signals within each burst signals received at a remote station or satellite in a TDMA communication...
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4411007 |
Distributed network synchronization system
A synchronization system is provided for a tree-type transmission system comprising a central station connected to a plurality of remote stations in an effectively sequential manner, each station...
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