Data transmitting-receiving system
First Claim
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1. A data transmitting-receiving system operatively connected to receive digital input data and first and second carriers, comprising:
- a transmitter part, operatively connected to receive the digital input data and the first carrier, for modulating the first carrier with the digital input data to obtain a modulation signal and for transmitting the modulation signal therefrom; and
a receiver part, operatively connected to said transmitter part and operatively connected to receive the second carrier, for receiving the modulation signal and for demodulating the modulation signal with the second carrier, having the same frequency as that of the first carrier, to reproduce, as digital output data, the digital input data,said transmitter part including means for simultaneously transmitting the modulation signal on one of a vertically polarized wave and a horizontally polarized wave and for transmitting the first carrier to said receiver part on the other of the vertically and horizontally polarized waves,said receiver part including means for simultaneously receiving the modulation signal and the first carrier, and for achieving synchronous detection of the received modulation signal with the received first carrier so as to demodulate the modulation signal, thereby obtaining the digital output data.
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Abstract
A data transmitting-receiving system including both a transmitter part and a receiver part. The transmitter part transmits a modulation signal on one of the vertically and horizontally polarized waves and, at the same time, transmits a carrier on the other of the waves. The modulation signal on one of the waves is received and demodulated by the receiver part with the carrier on the other of the waves also received by the receiver part.
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Citations
27 Claims
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1. A data transmitting-receiving system operatively connected to receive digital input data and first and second carriers, comprising:
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a transmitter part, operatively connected to receive the digital input data and the first carrier, for modulating the first carrier with the digital input data to obtain a modulation signal and for transmitting the modulation signal therefrom; and a receiver part, operatively connected to said transmitter part and operatively connected to receive the second carrier, for receiving the modulation signal and for demodulating the modulation signal with the second carrier, having the same frequency as that of the first carrier, to reproduce, as digital output data, the digital input data, said transmitter part including means for simultaneously transmitting the modulation signal on one of a vertically polarized wave and a horizontally polarized wave and for transmitting the first carrier to said receiver part on the other of the vertically and horizontally polarized waves, said receiver part including means for simultaneously receiving the modulation signal and the first carrier, and for achieving synchronous detection of the received modulation signal with the received first carrier so as to demodulate the modulation signal, thereby obtaining the digital output data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A data transmitting-receiving system operatively connected to receive digital input data and a first carrier, comprising:
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a transmitter comprising; means, operatively connected to receive the digital input data and the first carrier, for modulating the first carrier with the digital input data to obtain a modulation signal; and means, operatively connected to said modulating means and operatively connected to receive the first carrier, for transmitting the modulation signal and the first carrier on first and second polarized waves, respectively, the first and second polarized waves comprising one of a vertically polarized wave and a horizontally polarized wave, and the other of the vertically and horizontally polarized waves, respectively; a receiver comprising; means for simultaneously receiving the modulation signal and the first carrier transmitted on the first and second polarized waves, respectively; means, operatively connected to said receiving means, for synchronously detecting the received modulation signal and the received first carrier so as to demodulate the received modulation signal to obtain digital output data corresponding to the digital input data. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for transmitting digital input data in a data transmitting-receiving system using a first carrier, comprising the steps of:
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(a) modulating the first carrier with the digital input data to obtain a modulation signal; (b) simultaneously transmitting the modulation signal and the first carrier on first and second polarized waves, respectively, the first and second polarized waves comprising one of a vertically polarized wave and a horizontally polarized wave, and the other of the vertically polarized wave and the horizontally polarized wave, respectively; (c) simultaneously receiving the modulation signal and the first carrier transmitted in said step (b); and (d) demodulating the modulation signal by synchronous detection of the received modulation signal and the received first carrier to obtain digital output data corresponding to the digital input data. - View Dependent Claims (26, 27)
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Specification