Resources Contact Us Home
High-performance fault tolerant computer system with clock length synchronization of loosely coupled processors

Image Number 10 for United States Patent #5845060.

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 local CPU clock. The CPUs are forced to take the same number of CPU clock cycles to complete the I/O operations. When the I/O operation is complete the internal processing of the instruction stream continues in a manner which is clock aligned in each of the multiple CPUs but which may be separate in real time due to oscillator drift. Accumulated drift is periodically removed by a timed interrupt which forces resynchronization of the CPUs in real time.

  Recently Added Patents
Method and system for constructing a customized web analytics application
Rain barrel
Sample holder and method for treating sample material
Nucleic acids for cloning and expressing multiprotein complexes
Defect detection system and method
Soliciting first party in communication session to maintain call when degradation of connection to second party is anticipated
Mechanical and moisture protection apparatus for electronic devices
  Randomly Featured Patents
Integrated advertisement board
p-type semiconductor, method for manufacturing the p-type semiconductor, semiconductor device, photovoltaic element, and method for manufacturing semiconductor device
Solid electrolytic capacitor and method for preparing the same
Virtualizing a communications channel in which blocks of data are divided into multiple sub-blocks for conveyance
Methods for producing enriched populations of human retinal pigment epithelium cells
High capacity document sheet processor
Network gateway with enhanced requesting
Hydrolyzed cassava starch flocculants
Sheet-form, curable pressure-sensitive adhesive
Active damping oscillator having non-connected shaft member and outer sleeve movable relative to each other by energization of coils