Transmitting digital data via full duplex channel - sending coding information back to transmission end for forward error correction
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Method for locating a mobile transmitter
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Trellis coded modulation of oscillatory carrier wave
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Method and apparatus for digital transmission of information in short wave radio networks
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Electronic signature process
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Authenticated cryptographic key exchange in digital subscriber network - using preliminary phase of multiplication in finite galois field with random number selection for public key
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IO interface for digitial function tests
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Secret key generation and distribution method
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Signal transmission method and a synchronisation circuit for use in a receiver for carrying out said method
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Telephone handpiece incorporating manual pulse switch - has cooperating restraint with slider and guide element holding switch in closed position
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Method for digital data transmission using continuous phase modulation
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Method and apparatus for setting up a short wave radio network communication
