Memory organization for vertical and horizontal vectors in a ras

Details Memory organization for vertical and horizontal vectors in a ras Memory organization for vertical and horizontal vectors in a ras

1986-07-30

1987-12-29

Shaw, Gareth D.

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340750, G06F 900

Patent

active

047165464

ABSTRACT:
A memory organization for holding memory refresh data for a display uses input address selectors for memory modules for a segmented display to provide horizontal rotation of all data in the memory modules. On writing of vertical vectors, a logic tree using Exclusive ORs modifies memory address bits to provide tilt to the vertical vector and cause it to be orthogonal to horizontal vectors. Output data selectors read data from the memory modules to the display and derotate the data so that the display is restored to its original form.

REFERENCES:
patent: 3883728 (1975-05-01), Schwartz et al.
patent: 4145754 (1979-03-01), Utzerath
patent: 4254467 (1981-03-01), Davis et al.
patent: 4500928 (1985-02-01), Bucek et al.
patent: 4546451 (1985-10-01), Bruce
patent: 4559611 (1985-12-01), Ostapko

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