发明名称 Memory apparatus and method for controlling memory access based on memory address directivity
摘要 In a printer control apparatus having a two-dimensional address type full dot memory, this full dot memory is constituted by a longitudinal/lateral-direction highspeed memory with a highspeed access operation along an x address direction, an oblique-direction highspeed memory with both access speeds in x address and y address direction, and another longitudinal/lateral-direction highspeed memory with a highspeed access operation along a y address direction. A directivity of a dot pattern is judged by a memory control unit, and this dot pattern is expanded from print data by a data processing unit, and then is written into a full dot memory. Any one of the longitudinal/lateral-direction highspeed memory, the oblique-direction highspeed memory, and the longitudinal/lateral-direction highspeed memory is selected based on the directivity judgment result to expand the dot pattern into the selected memory.
申请公布号 US6151656(A) 申请公布日期 2000.11.21
申请号 US19980031543 申请日期 1998.02.27
申请人 HITACHI, LTD. 发明人 MASHIMA, HAYATERU;AMARI, MITSUHIRO
分类号 G06F12/06;G06F12/02;G06K15/10;G09G5/39;(IPC1-7):G06F12/02 主分类号 G06F12/06
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