DMA controller with dynamically variable access priority

Year	Description
2000	Invention patented by Nobuo Kamei, Kenichi Morita, Takeshi Minami, Kazunori Shionoya, and Munehiro Nakatani on March 6th, 2000. Abstract: A bus monitor section 8 calculates bus-occupancy rate for each of the DMA control sections 1 to 3 connected to a bus 5 in accordance with bus-use permission signals ack1 to ack3, respectively. Furthermore, a bus-use reconcilement section 6 changes manners of bus-use reconcilement control when the sum of a plurality of bus-occupancy rate exceeds "50", a predetermined threshold. Thereby, this method avoids occurrences such that a specific device occupies the bus 5 or vice versa, a specific device cannot get access to the bus 5.
Source: selected by the editor from original sources.

Invention: DMA controller with dynamically variable access priority