Medical imaging system including use of DMA control for selectiv

Details Medical imaging system including use of DMA control for selectiv Medical imaging system including use of DMA control for selectiv

1988-11-25

1990-12-25

Fleming, Michael R.

Boots, shoes, and leggings

36523005, 340799, G06F 1538

Patent

active

049808281

ABSTRACT:
A system is provided for a display of CT cine images stored in a hybridized memory including both dynamic random access memory (14) and video random access memory frame buffer (16). The system includes memory address space which is allocated between the VRAM and DRAM. Non-linear, chained direct memory access control (22) provides a system to write a series of 640.times.512 pixel images directly from the frame buffer at 60 frames per second. The chaining provides a means for skipping over unused addresses at the end of a display line, thus maximizing utilization of expensive VRAM memory.

REFERENCES:
patent: 4636783 (1987-01-01), Omachi
patent: 4723226 (1988-02-01), McDonough et al.
patent: 4740922 (1988-04-01), Ogawa
patent: 4773044 (1988-09-01), Sfarti et al.
patent: 4777485 (1988-10-01), Costello
patent: 4789960 (1988-12-01), Willis

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