Abstract
A spread spectrum method and apparatus for protecting and authenticating wirelessly transmitted digital information using numerous techniques. The apparatus may be a wireless code division multiple access (CDMA) communication system a base station a wireless transmit/receive unit (WTRU) a transmitter a receiver and/or an integrated circuit (IC). The wireless CDMA communication system includes a transmitter which steganographically embeds digital information in a CDMA communication signal and wirelessly transmits the CDMA communication signal. The system further includes a receiver which receives the CDMA communication signal and extracts the steganographically embedded digital information from the received CDMA communication signal.
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| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Information | ||||||
| 3G | 19/09/2008 | ISLD-200901-001 | INTERDIGITAL INC | No | Family Member | ||||
| 4G | 19/09/2008 | ISLD-200901-001 | INTERDIGITAL INC | No | Family Member | ||||
| 3G | 14/09/2009 | ISLD-200911-005 | INTERDIGITAL INC | No | Family Member | ||||
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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