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:
Mar. 30, 1982
Filed:
Apr. 15, 1980
Elmer W Carroll, Wilmington, MA (US);
Virendra S Negi, Pepperell, MA (US);
Arthur Peters, Sudbury, MA (US);
Honeywell Information Systems Inc., Waltham, MA (US);
Abstract
In a data processing system, a self-diagnosing system selectively initiates the operation of subprocessing units in the data processing system in a predetermined sequence to determine whether the subprocessing units are operating correctly. A control store stores a plurality of sequences of control data which are selectively accessed to control the operation of the subprocessing units to perform self-diagnosing error tests. A display unit displays an indication of which of the sequences of control data is currently controlling the operation of the subprocessing units in order to aid error diagnosis should an error be discovered during the operation of the self-diagnosing system.