Cable system having multiple barkering
Cable television setback decoder automatic control
Cable television system
Cable television system having dynamic market code shuffling
Cable TV system using passwords
Cable TV system using passwords
Canal+ decoder switching circuit for video cassette recorders
Capability security for transparent distributed object systems
Card charging systems
Card-computer moderated systems
CATV subscriber apparatus with intelligent remote control
CATV system and method of curtailing reception of unauthorized s
CATV terminal unit
Cellular phone provided with legal identification means of the o
Cellular telephony authentication arrangement
Cellular verification and validation system
Certificate issue lists
Certificate revocation performance optimization
Certificate revocation system
Certificate revocation system