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:
Apr. 16, 1991
Filed:
Jan. 27, 1989
Applicant:
Inventors:
Kumar Chinnaswamy, Milford, MA (US);
Michael A Gagliardo, Shrewsbury, MA (US);
Paul M Goodwin, Framingham, MA (US);
John J Lynch, Wayland, MA (US);
James E Tessari, Arlington, MA (US);
Assignee:
Digital Equipment Corporation, Maynard, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
371 402 ;
Abstract
A method and apparatus for a read-modify-write operation in a digital computer memory system which reduces memory data path buffer storage requirements with a procedure which includes latching new write data and associated mask fields into a data output buffer and then merging read data with the new data in the output buffer according to the latched mask fields.