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| Number | Title | Issue Date |
| 4707804 | Computer security system A security system for preventing access to a computer by an unauthorized remote user is disclosed. A plurality of information transmission paths, such as telephone lines, are connected to a security computer. If a remote user provides an authorized access... | 11/17/1987 |
| 4697243 | Methods of servicing an elevator system A method of integrating an expert system having a knowledge base of elevator trouble-shooting information into the working environment of elevator service personnel, without special training of such personnel, and without compromising the security of the ... | 09/29/1987 |
| 4694492 | Computer communications security control system A computer communications control system is provided for authenticating the authorization of a user of computer equipment such as a terminal of a computer network, more specifically communicating data terminal equipment that is connected through a communi... | 09/15/1987 |
| 4679226 | Computer security guard circuit A circuit (16) is designed to prevent unauthorized access to a remote device such as a computer (10) over a communications system such as a telephone network (12). A remote computer terminal (13) is connected to the telephone network (12) through a conven... | 07/07/1987 |
| 4675815 | Transaction safety system for falsely indicating successful completion of illegal transaction A transaction device, having an input portion, and a processing device, having a client file, which is located at a processing center, are connected by a telephone line for processing data input on the transaction device. The transaction device sends an a... | 06/23/1987 |
| 4674115 | Programmable telephone switcher The programmable telephone screening device routes an incoming call to a selected telephone device, depending on preestablished device priorities and upon access codes dialed by the caller. The device provides call hold, call forwarding and automatic dial... | 06/16/1987 |
| 4672533 | Electronic linkage interface control security system and method An electronic computer linkage interface control security system that allows a remote computer terminal to control the across to a main computer. The system includes a Computer Linkage Interface Control (CLIC) module that is coupled to the terminal and th... | 06/09/1987 |
| 4645873 | Transactional telecommunication system A transactional system serves subscribers in a plurality of localities, and includes a national data base having a plurality of groups of addressed segments of data storage. Each group stores data pertaining to an associated locality, and each group is ad... | 02/24/1987 |
| 4634809 | Terminal systems A terminal system includes first and second terminals (7, 8 and 3a respectively). The terminals can be connected to a central equipment and the first terminals are used for a first functional mode, for example passage control, where persons allotted ident... | 01/06/1987 |
| 4630201 | On-line and off-line transaction security system using a code generated from a transaction parameter and a random number A security system is disclosed for use in an electronic funds transfer environment. The system includes a central processor and a portable transaction device. During initiation, the central processor generates a sequence of transaction numbers and associa... | 12/16/1986 |
| 4626623 | Method and apparatus for telephone access security The invention comprises a method and apparatus for providing secure access to a restricted access device, associated with a telephone answering unit at a first location from a second location across a telephone system. The method comprises the steps of at... | 12/02/1986 |
| 4611098 | Coded telephone access system A telephone access system provides to the caller connection to an output upon receipt of a coded signal from the caller. Units are connected in sequence for receipt of each member of the coded signal. The caller has a predetermined period of time to enter... | 09/09/1986 |
| 4604499 | Computer telephone access security processor A "state of the art" Computer Security Processor (CSP) is disclosed to stop the "hacker" (a person who enjoys computers as a hobby) by making it virtually impossible to "break into" (a term meaning to falsely gain access to) a computer. A processor is dis... | 08/05/1986 |
| 4601011 | User authorization verification apparatus for computer systems including a central device and a plurality of pocket sized remote units A remote user authorization verification system including a central device having data imput and output, memory and data comparison facilities, and a plurality of hand held, pocket size remote units arranged for data communication with the central device ... | 07/15/1986 |
| 4559415 | Charging process for selling information by telephone A charging process for selling information via a telephone network. A data bank can be connected via said network with calling subscribers. This data bank has a telephone number and a device for supplying a spoken message. The data bank supplies its messa... | 12/17/1985 |
| 4546213 | Modem security device A modem security access circuit device, which is coupled between a dial-up telephone line and an automatic-answering modem, includes a line matching transformer circuit which trips an incoming ringing signal for a predetermined time interval. During the p... | 10/08/1985 |
| 4531023 | Computer security system for a time shared computer accessed over telephone lines A time-shared central computer can be protected from access from unauthorized users by utilizing automatic tracing equipment included within telephone switching systems, in combination with an independently organized offsite security computer system. The ... | 07/23/1985 |
| 4525712 | Transaction processing system In a system for the transaction operation with terminal units connected to a central unit through the communication line, the transaction operation by use of an ineligible terminal unit is prevented. An illegality preventive information is provided for ea... | 06/25/1985 |
| 4484306 | Method and apparatus for controlling access in a data transmission system An access control system for use in connection with a data communication system, particularly a data processing system having a computer apparatus, at least one user terminal and a communication link for providing communication between the computer appara... | 11/20/1984 |
| 4430728 | Computer terminal security system The invention provides a system for securing the access of a remote computer terminal (130) to a centrally located host computer (300). The system includes a first security circuit (200) interconnected with a calling telephone (100), a calling modem (110)... | 02/07/1984 |
| 4360875 | Automated, door-to-door, demand-responsive public transportation system A flexible-route transportation system, primarily utilizing privately-owned vehicles to provide ridesharing transportation for the public, is described. Interactive communications terminals are provided through which drivers of the vehicles may rapidly tr... | 11/23/1982 |
| 4349695 | Recipient and message authentication method and system The specification discloses a system and method for authenticating a message recipient prior to transmission of a message and for authenticating the message content after receipt of the message. A randomized character or character sequence is initially en... | 09/14/1982 |
| 4310720 | Computer accessing system A communications link between a computer and a remote user is effected by a portable access unit which generates a nonrecurring access code which is a function of a password and a pseudorandomly generated number. The access code is transmitted and compare... | 01/12/1982 |
| 4114139 | Security controlled information exchange system A security controlled information exchange system for controlling the orderly exchange of information between two or more users under primary control of security identifiers. Each user is set up with a local user indentifier (LUID) and a number of remote ... | 09/12/1978 |
| 3984637 | Computer terminal security system This invention is a security system for computer terminals which system provides means for preventing the unauthorized access to digital computers from illicit terminals. The invention provides a local code unit which includes means for manually selecting... | 10/05/1976 |
| 3976840 | Portable securities selector system A system for enabling securities information to be elicited and transactions to be automatically executed by an investor from a conventional telephone. A portable pocketsized data terminal having a keyboard, a display and status indicator lamps includes a... | 08/24/1976 |
