H - Electricity – 04 – K
Patent
H - Electricity
04
K
379/1, 325/3
H04K 1/04 (2006.01)
Patent
CA 1291833
VOICE BAND SPLITTING SCRAMBLER ABSTRACT OF THE DISCLOSURE Disclosed is a voice band splitting scrambler. To simplify the hardware thereof, the apparatus comprises a band splitting unit (11) for splitting an input voice signal into a plurality of band channels, and a scrambled voice signal generating unit (13) for carrying out spectrum-inverting and band-relocating operations on the respective channels to generate a scrambled voice signal. The scrambled voice signal generating unit (13) includes a modulating unit (15) for band-relocating the respective channels by noninverting carriers or inverting carriers set in different bands respectively; and an adding unit (17) for adding the signals of the non- inverting channels and the signals of the inverted channels to each other.
572470
Akiyama Ryota
Azuma Mitsuhiro
Torii Naoya
Fujitsu Limited
Mcfadden Fincham
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