Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via frequency channels
Reexamination Certificate
2008-07-15
2008-07-15
Orgad, Edan (Department: 2619)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via frequency channels
C370S521000, C370S480000, C370S497000, C375S261000, C375S295000, C375S324000, C704S266000, C704S230000, C704S258000
Reexamination Certificate
active
07400651
ABSTRACT:
A frequency interpolation apparatus is provided which reproduces a signal similar to an original signal by approximately recovering suppressed frequency components, from an input signal having the suppressed frequency components in a specific frequency band of the original signal. The input signal is divided into a plurality of signal component sets each having frequency components in a frequency band among a plurality of frequency bands, and a signal component set in the band with the suppressed signal components is synthesized from the plurality of divided signal component sets and added to the input signal. Each of the plurality of divided signal component sets is frequency-converted to a signal component set in the same frequency band, and the signal component set in the band with the suppressed signal components is synthesized through linear combination of the frequency-converted signal component sets. Spectrum envelope information of the frequency components not suppressed but residual in the original signal is extracted and the level of the signal component set to be synthesized is determined from the spectrum envelope information.
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Kabushiki Kaisha Kenwood
Lee Andrew C
Orgad Edan
Robinson Eric J.
Robinson Intellectual Property Law Office P.C.
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