DMA control system, printing apparatus, transfer instruction...

Details DMA control system, printing apparatus, transfer instruction... DMA control system, printing apparatus, transfer instruction...

2008-11-26

2011-11-22

Nguyen, Tanh (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Direct memory accessing

C710S023000, C710S033000, C710S034000, C710S035000, C710S059000

Reexamination Certificate

active

08065448

ABSTRACT:
A DMA control system includes: a plurality of DMA control units that are controlled in a manner that, while one of the plurality of DMA control units use a transmission path, the other DMA control units other than the one of the plurality of DMA control unit are prevented from using the transmission path; and a transfer instruction unit that defines transfer amounts of DMA transfers for the respective DMA control units and gives transfer instructions thereto. The transfer instruction unit, when the transfer instruction unit gives a transfer instruction to a first DMA control unit of the plurality of the DMA control units, defines a transfer amount for the first DMA control unit and gives the transfer instruction thereto in accordance with a state of utilizing a second DMA control units of the plurality of the DMA control units.

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Japanese Patent Office Action issued in application No. 2008-128832 dated Jan. 26, 2010.
Japanese Office Action issued Aug. 10, 2010, in corresponding Japanese Patent Application 2008-128832.

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