H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/16 (2006.01) H04Q 7/10 (2006.01)
Patent
CA 2108831
ABSTRACT OF THE DISCLOSURE The present invention provides a data transfer system capable of preventing a transmitter from erroneously receiving message data owing to instantaneous interruption of a transmission line and so on upon the message data being transmitted from a radio paging terminal to the transmitter via a transmission line. The radio paging terminal includes a message data transmission circuit for transmitting message data inputted to a transmission line and a transmitter receives an output signal from the message data transmission circuit via said transmission line and radiates the output signal through a modulator section and a transmitter section as radio waves for data transfer with said radio paging terminal. The transmitter includes a receiver for receiving the radio waves radiated from the transmitter section and sends the demodulated message data. The radio paging terminal includes a message data receiving circuit for receiving the message data outputted from said receiver, a comparator circuit for comparing the received message data with the message data transmitted by the message data transmission circuit, and a message data output circuit for outputting the message data found to be different from each other as a result of the comparison.
Corporation Nec
Smart & Biggar
LandOfFree
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