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:
Dec. 04, 1990
Filed:
Feb. 25, 1988
Applicant:
Inventors:
Wendell L Knicely, Framingham, MA (US);
Charles F Squires, Newtonville, MA (US);
Assignee:
Data General Corporation, Westboro, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G11C / ;
U.S. Cl.
CPC ...
364900 ; 36494831 ; 3649659 ; 3649692 ; 3649693 ; 36523005 ; 365195 ;
Abstract
An apparatus for incorporation in each memory-using component of a data processing system permits locking of a portion of the memory, which portion may be as small as a single location, for atomic read-modify-write operations while permitting unlimited access to the memory for read operations and access to all but the locked portion for non-atomic write operations.