公开(公告)号：CA1317685C

公开(公告)日：1993-05-11

申请号：CA602126

申请日：1989-06-08

Applicant: IBM

Inventor： SHERMAN ARTHUR M ,  YANKER PETER C

IPC: G06F12/00 ,  G06F12/04 ,  G06T1/60 ,  G09G5/36 ,  G09G5/39 ,  G06F12/02 ,  G06F3/14

Abstract: A method is described for transferring data units from a serially organized memory to a bit planar organized memory. The method first selects a plurality of data units from the serially organized memory. A bit pattern from the selected data units is then captured, which- bit pattern includes only bits to be stored in a subset of the storage planes of the bit planar organized memory. The bit pattern is processed to isolate from it, subsidiary bit patterns, one bit pattern for each storage plane in the bit planar memory. Each subsidiary bit pattern is then translated so that its bit sequence is properly oriented and is then stored in a plane of the bit planar organized memory. In a preferred embodiment of the invention, the translations take place as the result of a table look-up step.

公开(公告)号：CA1317686C

公开(公告)日：1993-05-11

申请号：CA602127

申请日：1989-06-08

Applicant: IBM

Inventor： SHERMAN ARTHUR M ,  YANKER PETER C

IPC: G06F12/00 ,  G06F12/04 ,  G09G5/14 ,  G09G5/36 ,  G09G5/39 ,  G06F12/02 ,  G06F3/14

Abstract: A graphic display PC/interface system is described which includes three memory units: a source memory which is addressed in planar byte increments and stores display data units on a bit per plane basis; a target memory for storing display data units in a manner suitable for operation of a display unit; and a window buffer for transferring display data units from the source memory to the target memory. The system transfers a quantity of display data unit bytes from the source memory to the target memory by accessing pairs of planar bytes, which pair of planar bytes may have a display data unit byte bridging therebetween. The method comprises selecting a first pair of planar bytes from the source memory; aligning the display data unit byte which lies totally within the selected first pair of planar butes; selecting a second pair of planar bytes from the source memory; aligning the display data unit byte which lies totally within the second selected pair of planar bytes; consolidating the the display data unit byte which bridges between the first and second pairs of selected planar bytes; aligning the consolidated display data unit byte; and transferring aligned display data unit bytes to the window buffer means. SA-988003