Correlative timing recovery in digital data transmission systems
Count-down addressing system
Cross connect frame for digital signals
Cross-office connecting scheme for interconnecting multiplexers
CRT shield
Crypto microprocessor for executing enciphered programs
Crypto microprocessor that executes enciphered programs
Crypto microprocessor using block cipher
Cryptographic apparatus and method
Cryptographic application for interbank verification
Cryptographic communication and file security using terminals
Cryptographic communications system and method
Cryptographic decoder for computer programs
Cryptographic encoder-decoder
Cryptographic telegram transmission system
Cryptographic telegraphy programming system
Cryptographically secure communication system
Cryptosystem
Cryptosystem
Crytographic key notarization methods and apparatus