DISTRIBUTION LINE CARRYING/RECEIVING DEVICE

PURPOSE:To provide a distribution line carrying/receiving device producing no data error due to disturbance caused by the load and the transmission charac teristic of a distribution line. CONSTITUTION:An amplifier 1 amplifies a received FSK signal, a band pass filter 2 limits its band to an FSK sign...

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Bibliographic Details
Main Author MITANI SHIGEO
Format Patent
LanguageEnglish
Published 18.06.1993
Subjects
CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
GENERATION
SELECTING
SYSTEMS FOR STORING ELECTRIC ENERGY
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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Summary:PURPOSE:To provide a distribution line carrying/receiving device producing no data error due to disturbance caused by the load and the transmission charac teristic of a distribution line. CONSTITUTION:An amplifier 1 amplifies a received FSK signal, a band pass filter 2 limits its band to an FSK signal frequency, an A/D converter 3 converts it into a digital signal. Digital band pass filters 4 and 5 having a passing band corresponding to transmission data '0' and '1' obtains filter output corresponding to data '0' and '1' absolute value circuits 6 and 7 takes the absolute value of filter output. When a comparator 10 compares/judges it coincident with data for synchronozation, a timer 11 is started and counters 8 and 9 measures the absolute value of the filter output value corresponding to data '0' and '1'. The sums of data of the counters 8 and 9 at the time of passing the transmission time of one bit after starting is size-compared by a comparator 12 and the larger one is set to be receiving data output.
Bibliography:Application Number: JP19910315728