(under subclass 154) Subject matter wherein memory entry is restricted.
SEE OR SEARCH CLASS
380, Cryptography,
4, for stored digital data access or copy prevention in combination with data encryption (e.g., software program
protection or computer virus detection in combination with data encryption), and subclasses 23+ for authentication systems using encrypted transmission.
455, Telecommunications,
26.1, for subject matter which blocks access to a signal source or otherwise limits usage of modulated carrier equipment.
710, Electrical Computers and Digital Data Processing Systems: Input/Output, 36+, for access regulating of peripheral to computer or vice versa; subclasses 107+ for regulating access of processors or memories to a bus; and subclasses 200 through 244 for generic access locking, access regulating, or access arbitration in data processing system.
713, Electrical Computers and Digital Processing Systems: Support,
200+, for security in computers or digital data processing systems.
714, Error Detection/Correction and Fault Detection/Recovery,
763+, for memory access block coding and subclass 805 for storage accessing error/fault detection techniques.
