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:
Nov. 30, 1976
Filed:
Mar. 03, 1975
Thomas Harvey Morrin, II, San Jose, CA (US);
David C Van Voorhis, Los Gatos, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A conventional word organized random access memory is modified for image processing operations so that the pq image points of any 1 .times. pq, pq .times. 1 or pxq subarray of an rp .times. sq or smaller image array stored in the memory can be extracted or updated in a single memory cycle. The invention contemplates 2 pq memory modules labeled from 0 to 2pq-1 for storing the image points, each module being capable of storing rs/2 points in distinguishable cells, only one cell of which is randomly accessible in a single instant of time. The invention further contemplates accessing circuitry for causing each image point I(i,j) of an image array to be routed to or from a memory module M(i,j) according to the relation M(i,j)=pq[(i/p)//2]+ (iq+i/2p+j)//pq, where the notations '/' and '//' denote, respectively, the quotient and the remainder resulting from integer division. The accessing circuitry additionally causes image point I(i,j) to be stored into or retrieved from a cell location A(i,j) of module M(i,j) according to the relation A(i,j)=(i/2p)s+(j/q).