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Dual Mode Amplitude Modulation

Transmit two signals on one amplitude modulated carrier wave
Patent application no. -  33025/MUM/2010
This invention relates to amplitude modulation used in electronic communication devices. Existing method of amplitude modulation employs change in amplitude of a carrier signal with respect to amplitude of a modulating signal. In this method amplitude of carrier signal is modulated on positive and negative side of carrier wave and both sides carry same modulating signal.
Invention (What is New)
The new method of modulating two different modulating signals on one carrier comprises of a device that modulates one modulating signal on positive side of the carrier wave and another signal on negative side of a carrier wave before transmission.
Modulation1Modulation2
A diagram shows 1 as carrier signal generator.  This signal is first modulated using a sine wave created by source shown as 5.  (The modulation is only on one amplitude side of the AM carrier signal). This signal is fed the block 3 where the other amplitude of AM carrier is modulated with another signal (Shown as square wave) Thus an AM Carrier signal has two different modulating signals which would be transmitted.
Modulation3Modulation4
A receiver comprises of two de-modulators to retrieve the two signals transmitted on one carrier wave. Each de-modulator demodulates different signal providing outputs of two signals those were modulated at the time of transmission