The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 14, 1989
Filed:
Dec. 10, 1986
W Daniel Hillis, Cambridge, MA (US);
Brewster Kahle, Somerville, MA (US);
Thinking Machines Corporation, Cambridge, MA (US);
Abstract
A method and apparatus are described for error control and correction which operates across multiple processors and multiple computer memories. In accordance with the invention, data signals from a plurality of processors are applied in parallel to a syndrome generator that generates a syndrome related to such signals. The syndrome is then stored in parallel in a plurality of read/write memories at the same address as the data signals from which the syndrome was generated. When the data signals are read from memory, they are again provided to the syndrome generator which again generates a new syndrome. At the same time the old syndrome signals stored at the same memory addresses are read from memory and compared with the new syndrome. If the two syndromes are the same, there is no error and the data signals are valid. If the syndromes are different, a syndrome decoder determines if sufficient information is available in the syndrome signals to correct the error and does so if it can.