VOICE COMMUNICATION APPARATUS
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United States of America Patent
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Issued Date -
Feb 26, 2009
app pub date -
Aug 23, 2007
filing date -
Aug 23, 2007
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A voice communication apparatus includes a primary modulator configured to perform primary modulation of a carrier with a center frequency outside a voice band by an analog voice signal; a PN-code generator configured to convert data into a PN code; an adder configured to add data included in the voice band and the primary-modulated voice signal; and a secondary modulator configured to perform secondary modulation of the PN code included in the voice band and the primary-modulated voice signal. According to the voice communication apparatus, an analog voice signal can be directly spread.
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