Patents
Sitemap › G06 - Computing; Calculating; Counting › G06F - Electric digital data processing › G06F 21 - Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
Patents for G06F 21 - Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity (119,294)
05/1989
05/02/1989US4827451 Safety device for the programming of an electrically programmable non-volatile memory
04/1989
04/25/1989US4825467 Restricted access television transmission system
04/20/1989WO1989003560A1 Apparatus for protecting local memory in a multiprocessor system
04/20/1989WO1989001690A3 Device for identifying news items
04/19/1989EP0312194A2 Data processor having two modes of operation
04/18/1989US4823308 Microcomputer with software protection
04/18/1989CA1252907A1 Secure data processing system architecture with format control
04/11/1989US4821169 Access verification arrangement for digital data processing system which has demand-paged memory with page crossing detection
04/06/1989WO1989003124A1 Method and apparatus for securing integrated circuits from unauthorized copying and use
04/04/1989US4819267 Solid state key for controlling access to computer systems and to computer software and/or for secure communications
04/04/1989US4819204 Method for controlling memory access on a chip card and apparatus for carrying out the method
04/04/1989US4819202 Release process for an access-controlled user memory and apparatus for carrying out the process
04/04/1989US4818986 Apparatus for controlling access to data storage devices
03/1989
03/28/1989US4817140 Software protection system using a single-key cryptosystem, a hardware-based authorization system and a secure coprocessor
03/28/1989US4816653 Security file system for a portable data carrier
03/22/1989EP0308219A2 Microcomputer with internal RAM security during external program mode
03/21/1989US4815032 Portable electronic memorandum device with password accessible memory
03/21/1989US4815031 Method for granting a request to authorized data terminal users accessing from any locations
03/21/1989US4814849 Monolithically integrated semiconductor circuit
03/21/1989US4814749 Protection system
03/21/1989US4813912 For securing operation against tampering
03/15/1989EP0306997A2 System for encryption and identification
03/15/1989EP0306920A2 Data processor having expanded operating functions
03/14/1989US4813024 Integrated circuit for the confidential storage and processing of data, comprising a device against fraudulent use
03/14/1989US4812675 Security element circuit for programmable logic array
03/09/1989WO1989002125A1 Error detection system for instruction address sequencing
03/08/1989EP0306395A1 Light detection circuit
03/07/1989US4811293 Method for storing data in an electrically erasable memory for carrying out this method
03/07/1989US4811291 Safety device for electrically programmable read-only memory
03/07/1989US4811288 Data security device for protecting stored data
03/01/1989EP0305004A1 Transaction system comprising one or more host exchanges and a number of distributed terminal stations which can be coupled to any host exchange via a network system, concentrator and terminal station suitable for use in such a transaction system, and operator identification element for use in such a terminal station
02/1989
02/28/1989US4809160 Privilege level checking instruction for implementing a secure hierarchical computer system
02/28/1989US4808802 Method and system for protecting information recorded in information medium
02/23/1989WO1989001690A2 Device for identifying news items
02/22/1989EP0304033A2 Method for diagnosing a data-processing installation infected with computer viruses
02/21/1989US4807288 Microprocessor intended particularly for executing the calculation algorithms of a public code encoding system
02/21/1989US4807284 Security device for sensitive data
02/14/1989US4805222 Digital computer system
02/14/1989US4805136 Program protection in a programmable electronic calculator
02/14/1989US4805134 Electronic system for accessing graphical and textual information
02/14/1989US4804826 Device for preventing unauthorized use of credit cards and like data carriers
02/08/1989EP0302710A2 A method of controlling the use of computer programs
01/1989
01/31/1989US4802217 Method and apparatus for securing access to a computer facility
01/31/1989US4801935 Apparatus and method for security of electric and electronic devices
01/25/1989EP0300516A2 Digital data processing system
01/25/1989EP0300406A2 Write protect mechanism for non-volatile memory
01/24/1989US4800590 Computer key and computer lock system
01/24/1989US4799635 System for determining authenticity of an external memory used in an information processing apparatus
01/17/1989US4799258 Apparatus and methods for granting access to computers
01/17/1989US4799186 Electronic circuit constituting an improved high-speed stable memory with memory zones protect from overlap
01/17/1989US4799061 Secure component authentication system
01/17/1989US4798941 IC card
01/11/1989EP0298848A2 Electronic detector for a logic binary level
01/11/1989EP0298242A2 Electronic appliance capable of storing secret data
01/10/1989US4797928 Encryption printed circuit board
01/04/1989EP0297347A2 Method to prevent use of incorrect program version in a computer system
01/04/1989EP0297209A2 Data card circuits
01/03/1989US4796235 Write protect mechanism for non-volatile memory
01/03/1989US4796220 Method of controlling the copying of software
01/03/1989US4796181 Billing system for computer software
12/1988
12/27/1988US4794515 Protection of data in a multiprogramming data processing system
12/22/1988DE3720233A1 Copy protection for data processing programs
12/21/1988EP0295985A1 Identification system for individuals
12/20/1988US4792996 Information medium for communicating data and/or a selectable control transfer program between the medium end and external device
12/15/1988WO1988009971A1 Security system having selective software program locks utilizing removable pla keys to allow hardware security lock updates
12/14/1988EP0294489A1 Optical disc and optical disc unit
12/13/1988US4791565 Apparatus for controlling the use of computer software
12/13/1988CA1246747A1 Apparatus for controlling the use of computer software
12/06/1988CA1246240A1 Program keyboard mechanism
12/01/1988WO1988009541A1 Person identification system
11/1988
11/29/1988CA1245764A1 Identification system
11/23/1988EP0292248A2 Data processing system
11/22/1988US4786790 Data exchange system with authentication code comparator
11/17/1988WO1988009019A1 Intelligent portable interactive personal data system
11/15/1988US4785361 Method and apparatus for frustrating the unauthorized copying of recorded data
11/08/1988US4783801 Apparatus for protecting secret information
11/01/1988CA1244130A1 Operator interactive device verification system
10/1988
10/25/1988US4780905 Computer data encryption system
10/20/1988WO1988008176A1 Arrangement for preventing unauthorized access
10/20/1988WO1988007824A1 Information security box
10/19/1988EP0287338A2 Security fuse circuit for programmable logic array
10/18/1988US4779224 Identity verification method and apparatus
10/13/1988DE3809795A1 Information transmission system using IC cards
10/11/1988US4777586 Semiconductor integrated circuit device with built-in arrangement for memory testing
10/05/1988EP0285309A2 Memory protection apparatus for use in an electronic calculator
09/1988
09/29/1988DE3709205A1 Protective circuit for information data in working memory
09/27/1988US4774662 Method for managerial clerk inspection
09/22/1988WO1988007240A1 Controlling security access
09/22/1988DE3707994A1 Method of protection from unauthorised code conversion
09/21/1988EP0282570A1 Metering retrieval of encrypted data stored in customer data retrieval terminal.
09/15/1988DE3706955A1 Circuit arrangement to secure access to a data processing system using a smart card
09/15/1988DE3706954A1 Data exchange system with memory cards
09/14/1988EP0282123A1 System and method for cryptography, including application
09/13/1988US4771456 Cable television channel selector/descrambler for use with cable-ready video applicances
09/07/1988EP0281225A2 Secure information storage
09/07/1988EP0281059A2 Data exchange system with a plurality of user terminals, each including an IC card reader
09/07/1988EP0281058A2 Data exchange system
08/1988
08/31/1988EP0280035A2 Method for the programme securing and for integrity checking of a secured programme
08/24/1988EP0279733A1 Method and device for limiting the use of a computer programme
08/24/1988EP0279712A1 Memory read circuit
1 ... 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193