41
Douglas E Jewett: Multiprocessor system with each processor executing the same instruction sequence and hierarchical memory providing on demand page swapping. Tandem Computers Incorporated, Graham & James, February 7, 1995: US05388242 (74 worldwide citation)

A computer system employs multiple CPUs, all executing the same instruction stream, with multiple, identical memory modules storing duplicates of the same data and accessable by all the CPUs, providing global memory. The multiple CPUs are loosely synchronized, as by detecting events such as memory r ...


42
Charles E Peet Jr, John D Allison, Kenneth C Debacker, Robert W Horst: Refresh control for dynamic memory in multiple processor system. Tandem Computers Incorporated, A C Smith, September 8, 1992: US05146589 (73 worldwide citation)

A computer system in a fault-tolerant configuration employs three identical CPUs executing the same instruction stream, with two identical, self-checking memory modules storing duplicates of the same data. Memory references by the three CPUs are made by three separate busses connected to three separ ...


43
Thomas Collins, Dale Hopkins, Susan Langford, Michael Sabin: Public key cryptographic apparatus and method. Tandem Computers Incorporated, Robert J Townsend & Townsend & Crew Bennett Esq, December 8, 1998: US05848159 (73 worldwide citation)

A method and apparatus are disclosed for improving public key encryption and decryption schemes that employ a composite number formed from three or more distinct primes. The encryption or decryption tasks may be broken down into sub-tasks to obtain encrypted or decrypted sub-parts that are then comb ...


44
Richard W Cutts Jr, Randall G Banton, Douglas E Jewett: Fault-tolerant computer system with redesignation of peripheral processor. Tandem Computers Incorporated, Graham & James, January 4, 1994: US05276823 (72 worldwide citation)

A computer system in a fault-tolerant configuration employs multiple identical CPUs executing the same instruction stream, with multiple, identical memory modules in the address space of the CPUs storing duplicates of the same data. The multiple CPUs are loosely synchronized, as by detecting events ...


45
Joerg Ferchau, Victor Trujillo: Apparatus for cooling a plurality of electronic modules. Tandem Computers Incorporated, Townsend and Townsend Khourie and Crew, August 17, 1993: US05237484 (72 worldwide citation)

A high density electronic module packaging system includes a cabinet for housing a plurality of modules. Disposed at the rear of the cabinet and forming a rear wall thereof is a cooling system housing that is used for cooling the modules contained in the cabinet. Disposed within the cabinet are a pl ...


46
Richard W Carr: Method for multiprocessor communications. Tandem Computers Incorporated, Townsend and Townsend, January 5, 1988: US04718002 (72 worldwide citation)

An improved method for communicating updated information among processors in a distributed data processing system. The system includes a plurality of distributed interconnected processors each having a memory. The method includes the steps of prioritizing the processors into a predetermined order, e ...


47
W Dale Hopkins: Method and apparatus for user and security device authentication. Tandem Computers Incorporated, Graham & James, May 26, 1998: US05757918 (72 worldwide citation)

A new process is described for verifying a user and/or authenticating a smart card in an off-line computer environment with limited a priori knowledge on the part of the verifier. This process advantageously uses the computational capability and the physical and logical security characteristics offe ...


48
Kevin J Rowett: Method and apparatus for fault tolerant connection of a computing system to local area networks. Tandem Computers Incorporated, Townsend and Townsend Khourie and Crew, September 5, 1995: US05448723 (71 worldwide citation)

A computing system, having an input/output bus for communicating data thereon, is connected to a network by a pair of network controller devices. Each of the network controller devices, in turn, connect to a corresponding one of a pair of multi-ported network repeater elements which are, in turn, co ...


49
Ralph R Bestock, Jae Young Kim, Webster D Hopkins, Martin M Atalla: Method for encrypting transmitted data using a unique key. Tandem Computers Incorporated, A C Smith, June 12, 1990: US04933971 (70 worldwide citation)

The invention comprises a method for encrypting data for communication between a host computer and each of a plurality of remote terminals in a network. A method is provided for periodically generating a unique dynamic encryption key for each of said plurality of terminals using a system seed key re ...


50
Yi Ren Peter Sheh, Roger James Schroeder: End-to-end session recovery. Tandem Computers Incorporated, Graham & James, May 19, 1998: US05754752 (67 worldwide citation)

A session recovery mechanism that permits the recovery of a session with a minimal delay to a user and with minimal data loss. When the client/server communications protocol process, such as TCP/IP process, issues an error message to a server and a client, the server and the client switch from a ser ...