Personal computer security system
July 1, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesFile access security method and means Protected software access control apparatus and method Method to control I/O accesses in a multi-tasking virtual memory virtual machine type data processing system System using an adapter board to couple a personal computer to a plurality of peripherals in a financial environment Method and system for preventing unauthorized use of software Computer file protection system System for providing high security for personal computers and workstations Computer file protection system Patent #: 5289540 InventorsAssigneeApplicationNo. 269591 filed on 07/01/1994ExaminersPrimary: Beausoliel, Robert W. Jr.Assistant: Elmore, Stephen C. Attorney, Agent or FirmInternational ClassG06F 012/14AbstractA personal computer subsystem, having a hardware module and protection software, is designed to protect files on a personal computer from inadvertent or intentional distortion, and can be used to protect personal computers from programs known as computer viruses. The hardware module is connected to the personal computer system busses and the software has a kernel which ensures the security of one access path to the hard disk controller and utilizes the above-mentioned module to block other access paths to the hard disk controller. The only permitted access path to the hard disk controller is a path which uses the computer's operating system, modular device driver and basic input/output system. All other access paths to the hard disk controller are interpreted by the personal computer subsystem as forbidden. | |
