×

Method and apparatus for modulating a signal

  • US 6,621,426 B1
  • Filed: 10/07/2002
  • Issued: 09/16/2003
  • Est. Priority Date: 07/19/2000
  • Status: Expired due to Fees
First Claim
Patent Images

1. An apparatus for modulating a signal, comprising:

  • a plurality of sinusoidal wave generators, each sinusoidal wave generator operable to generate a sinusoidal wave signal with a different amplitude;

    a switching matrix operable to generate a modulated sinusoidal wave signal in response to the plurality of sinusoidal wave generators, the modulated sinusoidal wave signal having unique amplitudes representing digital data encoded in the modulated sinusoidal wave signal.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×