Patent ID: 6608934
Filing Date: 2003-08-19
Classification: H03M

Abstract:
An apparatus for encoding information represented by at least first and second data items in a reference signal complex, said reference signal complex including at least first and second spectral components having first and second frequencies, respectively, said first and second frequencies being different, said first and second spectral components having first and second reference amplitudes, respectively, said apparatus including:means for adjusting said first reference amplitude of said first spectral component of said reference signal complex in accordance with said first data item; means for adjusting said second reference amplitude of said second spectral component of said reference signal complex in accordance with said second data item; means for forming a frequency domain representation of an encoded signal complex including at least said adjusted first and second spectral components; means for converting the frequency domain representation to a time domain representation of said encoded signal complex; and means for decimating the time domain representation of said encoded signal complex in accordance with a desired compression ratio.