Communications: electrical – Digital comparator systems
Patent
1976-11-01
1978-05-16
Boudreau, Leo H.
Communications: electrical
Digital comparator systems
364900, G06K 900, G06F 1520
Patent
active
040901742
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 p.times.q 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 pq + 1 memory modules labeled from 0 to pq for storing the image points, each module being capable of storing rs 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 relative M(i,j) =(iq+j)//(pq+1), where the notation "//" denotes 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/p)s + (j/q).
REFERENCES:
patent: 3899771 (1975-08-01), Saraga et al.
patent: 3938102 (1976-02-01), Morrin et al.
patent: 3995253 (1976-11-01), Morrin et al.
patent: 3996559 (1976-12-01), Morrin et al.
Boudreau Leo H.
International Business Machines - Corporation
Schmid, Jr. Otto
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