초록 ▼

A fault tolerant computer system having a first processing system which includes a first data processor for executing a series of data processing instructions. A first data output terminal outputs data from the first processing system. A second processing system, substantially identical to the first

A fault tolerant computer system having a first processing system which includes a first data processor for executing a series of data processing instructions. A first data output terminal outputs data from the first processing system. A second processing system, substantially identical to the first processing system, operates independently from the first processing system. The second processing system includes a second data processor for executing the series of data processing instructions in the same sequence as the first data processor. It also includes a second data output terminal for outputting data from the second processing system. A synchronizing device is coupled to the first and second data processors for maintaining the execution of the series of data processing instructions by the first and second processing systems in synchronism. Fault detection devices are coupled to the first and second data output terminals for comparing the data output from the first processing system with the data output from the second processing system. The fault detection devices identify the presence of an error when the data output from the first processing system at the first output terminal is different from the data output from the second processing system at the second output terminal.

대표청구항 ▼

A fault tolerant computer system designed to be coupled to at least one I/O device comprising: a first processing system including a first data processor for executing a series of data processing instructions involving the passage of data into and out of said first data processor, and a first data o

A fault tolerant computer system designed to be coupled to at least one I/O device comprising: a first processing system including a first data processor for executing a series of data processing instructions involving the passage of data into and out of said first data processor, and a first data output terminal for outputting a portion of the data passing out of said first data processor to said at least one I/O device; a second processing system, substantially identical to said first processing system and operating independently of said first processing system, said second processing system including a second data processor for executing said series of data processing instructions in the same sequence as said first data processor, said second data processor\s execution of said instructions involving the passage of data into and out of said second data processor, and a second data output terminal for outputting a portion of the data passing out of said second data processor to said at least one I/O device; synchronizing means, coupled to said first and second data processors, for maintaining the execution of said series of data processing instructions by said first and second processing systems in synchronism; and fault detection means, coupled to said first and second processing systems at said first and second output terminals, respectively, for receiving from said first and second processing systems only the portion of the data output from said first data output terminal of said first processing system to said at least one I/O device and the portion of the data output from said second data output terminal of said second processing system to said at least one I/O device, said fault detection means including means for identifying the presence of an error in said fault tolerant computer system when the portion of said data output from said first processing system at said first output terminal is different from the portion of the data output from said second processing system at said second output terminal.