Method and apparatus for remote measurement
March 4, 2007. 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 References 3153780 3747068 3818481 Automatic meter reading device Digital processing and calculating AC electric energy metering system Carrier current communications system Meter terminal unit for use in automatic remote meter reading and control system User electric energy consumption apparatus Carrier current communications system System for controlling power distribution to customer loads InventorsApplicationNo. 07/022554 filed on 03/04/1987US Classes:702/62, Including communication means324/142, Watts340/870.02With meter readingExaminersPrimary: Lall, Parshotam S.Assistant: Cosimano, Edward R. Attorney, Agent or FirmInternational ClassesG01R 21/00 (20060101)G01R 21/133 (20060101) H02J 13/00 (20060101) AbstractA method and apparatus are disclosed for sensing, sampling and performing calculations on a parameter of a physical quantity at a plurality of remote locations comprising a plurality of remote sensing units and at least one processing unit linked to said plurality of remote sensing units via a two way communication link. Parameters of a physical quantity are sensed and sampled, calculations are performed and accumulated and transmitted, on demand, provided to the processing unit using a plurality of frequency bands one of which is identified as having valid data.Other References
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