Signal repeater for power line access data system
First Claim
1. A repeater for relaying information in a two-way communication system utilizing a power line distribution network as the communication medium, said repeater comprising:
- coupling means for coupling said repeater to the power lines at positions adjacent a power distribution node;
first receiving means for receiving a signal in a first band of frequencies from a first direction and producing a pulse indicative thereof;
timing means coupled to said first receiving means for controlling the operation of said repeater and starting said operation in response to said pulse;
first tone generating means, operatively connected to said first receiving means and responsive to said pulse, for generating at least one tone in a second band of frequencies;
second receiving means, for receiving a signal in a third band of frequencies from a second direction and producing a pulse indicative thereof;
second tone generating means, operatively connected to said second receiving means and responsive to the output thereof for generating at least one tone in a fourth band of frequencies;
first and second amplifying means coupled to said first and second tone generating means, respectively, for amplifying the outputs thereof; and
frequency dividing means connected to the inputs of said first and second receiving means and to the outputs of said first and second amplifying means for isolating the signals from and to said first and second amplifying means and said first and second receiving means, respectively, and connecting said first and second amplifying and said first and second receiving means to said coupling means.
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Abstract
A signal repeater is described for relaying information in a two-way communication system superimposed on a power distribution network. The repeater senses signals passing in either direction in the system, translates the received signal to a different band or group frequencies, and transmits the frequency translated information. Provision is made for address-coding the repeaters so that, when connected in several levels, a particular path can be selected through the various levels. Provision is also made for a signal having priority in a system of such repeaters.
317 Citations
16 Claims
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1. A repeater for relaying information in a two-way communication system utilizing a power line distribution network as the communication medium, said repeater comprising:
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coupling means for coupling said repeater to the power lines at positions adjacent a power distribution node; first receiving means for receiving a signal in a first band of frequencies from a first direction and producing a pulse indicative thereof; timing means coupled to said first receiving means for controlling the operation of said repeater and starting said operation in response to said pulse; first tone generating means, operatively connected to said first receiving means and responsive to said pulse, for generating at least one tone in a second band of frequencies; second receiving means, for receiving a signal in a third band of frequencies from a second direction and producing a pulse indicative thereof; second tone generating means, operatively connected to said second receiving means and responsive to the output thereof for generating at least one tone in a fourth band of frequencies; first and second amplifying means coupled to said first and second tone generating means, respectively, for amplifying the outputs thereof; and frequency dividing means connected to the inputs of said first and second receiving means and to the outputs of said first and second amplifying means for isolating the signals from and to said first and second amplifying means and said first and second receiving means, respectively, and connecting said first and second amplifying and said first and second receiving means to said coupling means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification