Method and Apparatus for Encoding and Decoding Analog Signals.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The patent describes a method and apparatus for encoding and decoding clear signals of an analog nature, the amplitudes of which represent information. The method employs a key which controls the coding of the signals, a module shift and the coding of the modulo-shift, the modulo shift being transmitted by time multiplex or on a separate channel from that of the encoded signal.
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