Power line carrier data transmission systems having signal conditioning for the carrier data signal
Patent 5870016 Issued on February 9, 1999. Estimated Expiration Date: 
February 3, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 3, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesTelemetry system with signal booster for digital data transmission through a transmission line Receiver apparatus for three-phase power line carrier communications Patent #: 4668934 InventorAssigneeApplicationNo. 794662 filed on 02/03/1997US Classes:375/297Power amplifierExaminersPrimary: Mullen, Thomas J. Jr.Assistant: Pope, Daryl Attorney, Agent or FirmInternational ClassH04M 011/04AbstractData bit error rates for power line carrier data transmission, in commercial and industrial applications, such as in office buildings and manufacturing plants is improved by connecting the power line transceiver modem to the power line via a booster amplifier and filter circuit which raises the carrier data signal level of the order of 20 dB, thereby overcoming spikes and other noise which can adversely affect the error rate. The power for the carrier data transmission system is obtained from the power lines over which the data is transmitted through filters which isolate the power supply from the power line thereby reducing the introduction of power supply noise into the power line and further improving the data bit error rate.Other References
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