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| Number | Title | Issue Date |
| 5272752 | Authorization code lockout mechanism for preventing unauthorized reception of transmitted data A system and method for using two simple transactions to enable the disconnection of unauthorized receiver terminals. This is accomplished in accordance with the invention by sending an addressed transaction to every known valid receiver terminal giving e... | 12/21/1993 |
| 5266942 | Security system with memory in transmitter and receiver A security system to defeat eavesdropping in a broadcast environment has at least one transmitter and at least one receiver. The transmitter includes a transmitter memory for storing a plurality of signals in a given sequence and a marker for identifying ... | 11/30/1993 |
| 5267299 | Automatic answering telephone apparatus with device to detect a remote control password An automatic answering telephone set comprises a voice synthesizing unit and a voice detector for reproducing a recorded message in response to a remote control performed by using a predetermined password number. A plurality of decoy numerals are inserted... | 11/30/1993 |
| 5263158 | Method and system for variable authority level user access control in a distributed data processing system having multiple resource manager Variable authority level user access control for a plurality of resource objects within a distributed data processing system having a plurality of resource managers. A reference monitor service is established and a plurality of access control profiles are... | 11/16/1993 |
| 5261102 | System for determining direct and indirect user access privileges to data base objects A method and computer system are disclosed for determining the access privileges currently held by a database user with respect to objects in the database. The steps of the method are: (a) requesting a determination of those objects to which a given user ... | 11/09/1993 |
| 5258998 | Data communication apparatus permitting confidential communication A data communication apparatus, such as a facsimile machine, in which the data of a page is transmitted in plural blocks, and the sending unit designates the blocks to be released as output. In this manner particular data can be sent to a particular recei... | 11/02/1993 |
| 5259029 | Decoding device for computer software protection Upon execution of the protected software, a random number is generated by the software and displayed to the user. The user inputs this number into a conversion device. This device utilizes a algorithm to obtain a unique output value. The user enters this ... | 11/02/1993 |
| 5249182 | Communication bus system with lock/unlock capability A multi-station communication bus system allows for the use of several master stations by way of an arbitration organization. A message contains a master address which is subjected to an arbitration operation, a slave address with space for a slave addres... | 09/28/1993 |
| 5239294 | Method and apparatus for authenication and protection of subscribers in telecommunication systems Radio frequency based cellular telecommuication systems often require a subscriber (10) to maintain a proprietary identifier (19) or serial number (18) which is transmitted to a fixed network communication unit (20) to verify the authenticity of the subsc... | 08/24/1993 |
| 5233655 | Data access verification system A system is provided for enabling use of a password or PIN (personal identification number) to prove authority for access to a data base, where the PIN cannot be safely transmitted to a verifying authority. The PIN is entered into a calculating circuit wh... | 08/03/1993 |
| 5229764 | Continuous biometric authentication matrix A system activating and analyzing the biometric data from a plurality of biometrically-oriented personal identification devices at intermittent intervals selectively allows or prevents continued use of a particular protected system or device by a particul... | 07/20/1993 |
| 5226080 | Method and apparatus for password protection of a computer A method and apparatus for password protecting a personal, laptop or single user computer. The user's password entry is compared to the value of a secondary password retained by the computer as well as the value of the user's stored primary password. The ... | 07/06/1993 |
| 5224163 | Method for delegating authorization from one entity to another through the use of session encryption keys A method for delegating authorization from one entity in a distributed computing system to another for a computing session is disclosed wherein a session public/private encryption key pair is utilized for each computing session. The private encryption key... | 06/29/1993 |
| 5222140 | Cryptographic method for key agreement and user authentication Protocols for session key agreement and authentication in a communication system such as a portable communication system make use of public key cryptographic techniques. The protocols of the present invention are especially suited for use in a portable co... | 06/22/1993 |
| 5220604 | Method for performing group exclusion in hierarchical group structures A method for denying a first group access to a system resource wherein a second group is selected such that the first group is a subgroup of the second group. Access is granted only to those members of the second group who do not derive their membership i... | 06/15/1993 |
| 5216633 | Nonvolatile semiconductor memory device including access code circuitry In a nonvolatile semiconductor memory device having a plurality of word lines, bit lines, sense lines, nonvolatile semiconductor memory cells, column selecting transistors, a page buffer circuit, data lines, an input driver/sense amplifier, an input buffe... | 06/01/1993 |
| 5214700 | Method for obtaining a securitized cleartext attestation in a distributed data processing system environment A method for obtaining at least one securitized cleartext attestation by at least one requestor subject coupled to a data processing system and communicating with each other through a network. The data processing system includes a plurality of subjects an... | 05/25/1993 |
| 5210875 | Initial BIOS load for a personal computer system An apparatus and method for loading BIOS stored on a direct access storage device into a personal computer system. The personal computer system comprises a system processor, a system planar, a random access main memory, a read only memory, and at least on... | 05/11/1993 |
| 5204512 | Device for controlling communication between electronic information cards and host computer to be kept in secret System for controlling communication between electronic information cards, such as IC-cards and a host computer, to be kept in secret. In order to protect the data, various countermeasures have been proposed in which the data are enciphered to be sent and... | 04/20/1993 |
| 5202923 | Portable electronic device capable of registering subprograms After registration of a subprogram is completed, a flag indicating that the subprogram has been registered is set. The flag is referred to in response to a subprogram registration request from an IC card reader/writer. Registration of the subprogram is pe... | 04/13/1993 |
| 5202929 | Data system and method A system and method are provided for enabling and recording operations relating to computers and computer peripheral equipment wherein sensitive or secret data is to be entered and stored or processed and data of a similar nature is accessible from memory... | 04/13/1993 |
| 5198806 | Remote control and secure access for personal computers A computer activation device comprised of at least one local computer system and at least one remote computer system, the computer systems are connected via a standard data communication interface by their own modems. An activator device is in electrical ... | 03/30/1993 |
| 5199066 | Method and apparatus for protecting software A method and system for protecting a software program recorded within a storage medium for use with or transmission to computer or processor based hardware comprises inputting a hardware code uniquely associated with the particular hardware and inputting ... | 03/30/1993 |
| 5196840 | Secure communications system for remotely located computers A system for determining when a remote computer user is authorized to communicate with a host computer and to establish a ciphering key to be used for the communications session. A random number is generated at the host computer, ciphered under the user's... | 03/23/1993 |
| 5194855 | Security device An improved security system comprising a relay selectably operable to pass electrical power to a protected device, a code plug having a preset combination of possible electrical connections controlling passage of electrical current to actuate said relay, ... | 03/16/1993 |
| 5191323 | Remote power on control device The remote power On devices used for powering a system from a remote console, to restart the system after a power failure. The remote console is connected to the system through switched network and autoanswer modem. When the connection is established the ... | 03/02/1993 |
| 5182770 | System and apparatus for protecting computer software An integrated software piracy prevention system incorporates several characteristic identification codes identifying installation and software components. A separate security device is attached to and in communication with the protected computer system. I... | 01/26/1993 |
| 5173939 | Access control subsystem and method for distributed computer system using compound principals A distributed computer system has a number of computers coupled thereto at distinct nodes and a naming service with a membership table that defines a list of assumptions concerning which principals in the system are stronger than other principals, and whi... | 12/22/1992 |
| 5172413 | Secure hierarchial video delivery system and method Disclosed is an improved system for the delivery of entertainment and educational programming from a plurality of electronic libraries to a plurality of users. Users actuate a hand operated control device to: review a listing of available programming; ena... | 12/15/1992 |
| 5162638 | Process for protection against fraudulent use of smart cards, and device for use of the process To prevent a person having found or stolen a card of a pay-television subscriber from using it fraudulently, the identity of the subscriber is recorded in a zone protected from reading and writing. At the beginning of the period of use of a new card, the ... | 11/10/1992 |
| 5155768 | Security system for software A security lock for use with a game machine that displays the content of a game through a video display device. The security lock uses a video game system comprising a means of storage, which stores the game programs as software, that is connected in a fl... | 10/13/1992 |
| 5151694 | Paging receiver capable of preventing unauthorized access to message meant therefor A paging receiver comprises an ID memory storing an ID number assigned to the receiver. If the ID number stored in the ID memory is coincident with an ID number stored in an ID card which is to be attached to the receiver, a received or stored message is ... | 09/29/1992 |
| 5146217 | Selective call receiver having confidential message read protection A selective call receiver 10 requires an access authorization code prior to presenting selected messages and to override a lockout mode.... | 09/08/1992 |
| 5146207 | Secure field monitoring device for use in electronic house arrest monitoring system A field monitoring device (FMD) for use in an electronic house arrest monitoring (EHAM) system has an infrared (IR) communications port concealed in the back of its housing. A strain relief fixture for the power cord covers the IR port during normal FMD o... | 09/08/1992 |
| 5144659 | Computer file protection system The invention is a system for protecting the security of computer files. It has hardware elements, including a programmable auxiliary memory and control unit along with associated software elements. The security subsystem is installed on the host computer... | 09/01/1992 |
| 5134391 | System for preventing the use of an unauthorized external memory A hand-held electronic game machine includes a computer accommodated in a case and a liquid crystal display (LCD) panel provided at an upper portion of a front surface of the case. When an external memory is inserted to a receiving port formed on a rear s... | 07/28/1992 |
| 5127099 | Method and apparatus for securing access to a ladder logic programming and monitoring system The present invention discloses a method of securing access to different functions in a ladder logic programming and monitoring system. Access to various functions of the software package can be controlled using the security system of the software package... | 06/30/1992 |
| 5115508 | Password system utilizing two password types, the first being changeable after entry, the second being unchangeable until power is removed An information protective device protects stored information such as a program, data or the like in an information processing apparatus such as small type of portable computer or the like. The information protective device comprises a prohibition conditio... | 05/19/1992 |
| 5113442 | Method and apparatus for providing access control in a secure operating system A method, and an operating system utilizing this method, for controlling access rights among a plurality of users to a plurality of secure objects. Each user is provided a user identification number which is prime and each secure object is provided an acc... | 05/12/1992 |
| 5113499 | Telecommunication access management system for a packet switching network A security access management system for a packet switched data communications network has access management apparatus operatively associated with the packet switches at each entry point of the network. The access management apparatus includes an administr... | 05/12/1992 |
