Method and apparatus to transfer information

Pulse or digital communications – Spread spectrum

Reexamination Certificate

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C375S146000, C375S135000, C375S295000, C375S259000, C375S367000, C375S150000, C370S335000, C370S342000, C704S207000, C704S213000, C455S042000, C455S046000, C455S047000

Reexamination Certificate

active

07020177

ABSTRACT:
Briefly, in accordance with an embodiment of the invention, a method and apparatus to transfer information is provided, wherein the method includes transferring information between at least two wireless devices using a waveform that includes a first sinusoidal signal and a second sinusoidal signal, wherein the second sinusoidal signal has more zero-crossings than the first signal and wherein a duration of the first sinusoidal signal is less than a duration of the second sinusoidal signal.

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Harold F. Engler, Jr., Georgia Tech Research Institute, Atlanta, GA, “Systems Considerations for Large Percent-Bandwidth Radar” IEEE 1991, pps 0133-0137.

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