公开(公告)号：CA1119326A

公开(公告)日：1982-03-02

申请号：CA318416

申请日：1978-12-21

Applicant: IBM

Inventor： HYDES ALAN F ,  JONES ALAN L

IPC: G09G5/32 ,  G09G1/00 ,  G09G5/14 ,  G06F3/14

Abstract: Most present day CRT alphanumeric displays have a fixed screen layout. Here additional alternative screen layouts e.g. split screen layout are provided by hardware with operator selection. A raster scanned CRT display is described having a refresh buffer in which alphanumeric data to be displayed is stored in a first sequence of addresses. When the refresh buffer is addressed by the first sequence of addresses a first screen layout results. This will normally be a "full screen" layout. A translation store (ROS or RAM) provides a modified sequence of translated addresses when addressed by the first sequence of addresses. The refresh buffer is selectively addressed by the modified sequence of translated addresses to display the data in a second screen layout. Each alternative screen layout requires an associated sequence of translated addresses to determine where the data should be displayed on the screen. Split screen layout, selectable line length layout, and Hanguel language character layout are described. UK9-78-013

公开(公告)号：FR2409558A1

公开(公告)日：1979-06-15

申请号：FR7829862

申请日：1978-10-13

Applicant: IBM

Inventor： HYDES ALAN F

IPC: G09G5/32 ,  G06F3/153 ,  G06F17/21 ,  G09G5/16 ,  G09G5/30 ,  G06K17/00