1
Douglas E Jewett, Phil Webster, Dave Aldridge, Peter C Norwood, Nikhil A Mehta: Fault-tolerant computer system with auto-restart after power-fall. Tandem Computers Incorporated, Graham & James, May 31, 1994: US05317752 (210 worldwide citation)

A fault-tolerant computer system employs a power supply system including a battery backup so that upon AC power failure the system can execute an orderly shutdown, saving state to disk. A restart procedure restores the state existing at the time of power failure if the AC power has been restored by ...


2
Richard W Cutts Jr, Nikhil A Mehta, Douglas E Jewett: Multiple processor system having shared memory with private-write capability. Tandem Computers Incorporated, Arnold White & Durkee, October 23, 1990: US04965717 (169 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. Memory references. The multiple CPUs are loosely synchronized, as b ...


3
Douglas E Jewett, Tom Bereiter, Brian Vetter, Randall G Banton, Richard W Cutts Jr, Donald C Westbrook deceased, Kyran W Fey Jr, John Pozdro, Kenneth C Debacker, Nikhil A Mehta: Fault-tolerant computer system with online recovery and reintegration of redundant components. Tandem Computers Incorporated, Graham & James, March 15, 1994: US05295258 (160 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 system detects faults in the CPUs and memory modules, and place ...


4
Richard W Cutts Jr, Peter C Norwood, Kenneth C DeBacker, Nikhil A Mehta, Douglas E Jewett, John D Allison, Robert W Horst: Fault-tolerant computer with three independently clocked processors asynchronously executing identical code that are synchronized upon each voted access to two memory modules. Tandem Computers Incorporated, Graham & James, March 9, 1993: US05193175 (112 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 ...


5
Douglas E Jewett, Tom Bereiter, Bryan Vetter, Randall G Banton, Richard W Cutts Jr, Donald C Westbrook, Krayn W Fey Jr, John Posdro, Kenneth C Debacker, Nikhil A Mehta: Fault-tolerant computer system with online recovery and reintegration of redundant components. Compaq Computer Corporation, Fenwick & West, July 17, 2001: US06263452 (98 worldwide citation)

A computer system in a fault-tolerant configuration employees 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 system detects faults in the CPUs and memory modules, and pla ...


6
Richard Alan Vrba, James Stevens Klecka, Kyran Wilfred Fey Jr, Larry Leonard Lamano, Nikhil A Mehta: High-performance fault tolerant computer system with clock length synchronization of loosely coupled processors. Tandem Computers Incorporated, Graham & James, December 1, 1998: US05845060 (78 worldwide citation)

A fault-tolerant computer system employing multiple CPUs executing the same instruction stream under independent clock cycle timing. The CPUs deterministically execute the instructions internally until input or output operations require access to memory or devices which are not synchronous with the ...


7
Douglas E Jewett, Tom Bereiter, Bryan Vetter, Randall G Banton, Richard W Cutts Jr, Donald C Westbrook deceased, Krayn W Fey Jr, John Posdro, Kenneth C DeBacker, Nikhil A Mehta: Fault-tolerant computer system with online recovery and reintegration of redundant components. Compaq Computer Corporation, Fenwick & West, June 6, 2000: US06073251 (60 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 system detects faults in the CPUs and memory modules, and place ...


8
Richard W Cutts Jr, Kenneth C Debacker, Robert W Horst, Nikhil A Mehta, Douglas E Jewett, John David Allison, Richard A Southworth: Interrupts between asynchronously operating CPUs in fault tolerant computer system. Tandem Computers Incorporated, Graham & James, March 30, 1999: US05890003 (31 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 ...


9
Cutts Richard W Jr, Charles E Peet Jr, Jewett Douglas E, Kenneth C Dibecker, Nikhil A Mehta, John David Allison, Robert W Horst: Memory managing system for fault tolerant computer. Tandem Comput, January 17, 1995: JP1995-013789

PURPOSE: To check the state of each CPU by the other CPU in the case of providing a fault tolerant type computer system. CONSTITUTION: The fault tolerant type computer system is provided with the plural CPU for executing the same instruction stream and a common memory having a memory space to be acc ...


10
Richard A Vulba, James S Krekka, Kaylan W Fay Jr, Larry L Ramano, Nikhil A Mehta: Fault-tolerant type computer system. Tandem Comput, March 17, 1995: JP1995-073059

PURPOSE: To sufficiently and effectively utilize the high-speed throughput of a high-speed processor, in a fault-tolerant computer system. CONSTITUTION: Concerning this fault tolerant type computer system, a multiplex CPU is used for executing the same instruction stream at independent clock cycle t ...