System for controlling access to broadcast transmissions

System for controlling the distribution and use of composite dig

System for controlling the distribution and use of digital works

System for controlling the distribution and use of digital works

System for controlling the distribution and use of rendered...

System for conveying information for the reliable authentificati

System for creating virus diagnosing mechanism, method of creati

System for cryptographing and identification

System for data encryption and decryption of digital data...

System for decoding and displaying personalized indentification

System for decoding transmitted scrambled signals

System for decrypting encrypted software

System for delaying the activation of inactivity security mechan

System for denying access to content generated by a...

System for detecting improper rewrites of data system for using

System for detecting unaccounted for printing in a value printin

System for detecting unaccounted for printing in a value printin

System for detecting unauthorized account access

System for determination of the equivalence of two objects witho

System for determining a truth of software in an information pro