Masking sound generator

Matched filter communication systems

Method and apparatus for a rolling code learning transmitter

Method and apparatus for coherent communication in a...

Method and apparatus for combining space-frequency block...

Method and apparatus for continuous cross-channel interleaving

Method and apparatus for data encryption and transmission

Method and apparatus for decryption of an information packet...

Method and apparatus for distorting a speech signal

Method and apparatus for enciphering and deciphering audio...

Method and apparatus for encryption of wireless communication

Method and apparatus for establishing usage rights for...

Method and apparatus for handoff within a communication system

Method and apparatus for masking sound

Method and apparatus for preventing external detection of...

Method and apparatus for providing privacy/security in a...

Method and apparatus for scrambling and descrambling of...

Method and apparatus for scrambling and unscrambling data...

Method and apparatus for secure distribution of...

Method and apparatus for subscription broadcast