G - Physics – 06 – T
Patent
G - Physics
06
T
354/244
G06T 1/60 (2006.01) G06F 12/02 (2006.01)
Patent
CA 1059642
RANDOM ACCESS MEMORY FOR IMAGE PROCESSING OPERATIONS ABSTRACT OF THE DISCLOSURE A conventional word organized random access memory is modified for image processing operations so that the pq image points of any 1 x pq, pq x 1 or pxq subarray of an rp x 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 ran- domly 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) accord- ing 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).
247251
Morrin Thomas H. (ii)
Van Voorhis David C.
International Business Machines Corporation
Na
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