Bit map rotation processor

Details Bit map rotation processor Bit map rotation processor

1987-06-03

1991-11-05

Shaw, Dale M.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340735, 382 46, G06F 1540, G06F 1562

Patent

active

050635263

ABSTRACT:
An apparatus for rotating bit-mapped data includes a specially designed data array (9) that includes a normal port (10) for accessing horizontal words of data and a rotated port (15) for accessing vertical words of data. In addition, address generating logic (6) is provided that automatically generates proper address seqences for accessing the normal words or the vertical words as appropriate during a rotation operation. The apparatus is cascadable (FIG. 29) to provide effectively any size data array.

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Gold, D. E., "Shift Register Implemented Image Rotator/Transposer", IBM Technical Disclosure Bulletin, vol. 12, No. 10, 3/75, pp. 3026-3028.
Gold et al., "Shift Register System for Image Orientation", IBM Technical Disclosure Bulletin, vol. 18, No. 8, 1/76, pp. 2633-2639.

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