Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1983-06-20
1987-05-19
Curtis, Marshall M.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340798, 340727, G09G 116
Patent
active
046671900
ABSTRACT:
The disclosure relates generally to a computer generated synthesized imaging system. More particularly, the invention relates to a method and apparatus for providing fast access to a two axis memory wherein consecutive data elements in both row and column orientation of a data set represented as a matrix may be obtained at a rate faster than the access time of memory elements utilized. A speed-up of access speed by a factor N may be achieved, where N is a power of 2 (2, 4, 8, 16 . . . ). The memory elements are organized in N independently addressable banks of data memories. The matrix oriented data is mapped into these N banks such that any N contiguous data elements of any row or any column reside in different memory banks. Any N contiguous data elements of any row or column may then be accessed within the access time of any one memory bank. The N contiguous data elements may then be read from memory in a single memory cycle. These N data elements can then be multiplexed in the proper sequence into a data stream operating N times faster than the basic access speed of the memory elements used.
REFERENCES:
patent: 3995253 (1976-11-01), Morrin, II et al.
patent: 3996559 (1976-12-01), Morrin, II et al.
patent: 4384338 (1983-05-01), Bennett
patent: 4442503 (1984-04-01), Schutt
patent: 4509043 (1985-04-01), Mossaides
Rural Scene Perspective Transformations; Devich SPIE, vol. 303; pp. 54-66; Aug. 1981.
Curtis Marshall M.
Easton Wayne B.
Honeywell Inc.
Mersereau Charles G.
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