Title:
IMAGE RECTANGULAR DMA SYSTEM
Document Type and Number:
Japanese Patent JPH05193203
Kind Code:
A
Abstract:
PURPOSE: To reduce a burden on a CPU and enhance a total throughput by a method wherein rectangular image data on an arbitrary position of a page memory is transmitted to a printer in a DMA system.
CONSTITUTION: A CPU 2 sets an address of an arbitrary rectangular area on a page memory in a rectangular DMA control part 8 in a bit expression. In the rectangular control part 8, an address and an effective bit are found by a start point and an end point in an X direction. Only data stored in the rectangular area is accessed.
Inventors:
TAKEMOTO YOSHINORI
SONOMURA NAGAMASA
BABA ICHIRO
SONOMURA NAGAMASA
BABA ICHIRO
Application Number:
JP3141292A
Publication Date:
August 03, 1993
Filing Date:
January 22, 1992
Export Citation:
Assignee:
TOYO ELECTRIC MFG CO LTD
International Classes:
B41J5/30; B41J29/38; G06T1/60; H04N1/387; (IPC1-7): B41J5/30; B41J29/38; G06F15/64; H04N1/387