公开(公告)号：DE3689691D1

公开(公告)日：1994-04-07

申请号：DE3689691

申请日：1986-12-12

Applicant: IBM

Inventor： MUHICH JOHN STEPHEN ,  THORNLEY JOSEPH STODDARD

IPC: G09G5/08 ,  G09G1/00

公开(公告)号：DE3689691T2

公开(公告)日：1994-09-15

申请号：DE3689691

申请日：1986-12-12

Applicant: IBM

Inventor： MUHICH JOHN STEPHEN ,  THORNLEY JOSEPH STODDARD

IPC: G09G5/08 ,  G09G1/00

公开(公告)号：BR8606362A

公开(公告)日：1987-10-13

申请号：BR8606362

申请日：1986-12-22

Applicant: IBM

Inventor： MUHICH JOHN STEPHEN ,  THORNLEY JOSEPH STODDARD

IPC: G06F3/048 ,  G06F3/14 ,  G09G5/00 ,  G09G5/08 ,  G09G1/00

Abstract: A cursor generation circuit for an image display system that includes a storing circuit for storing image data. The storing circuit includes a first port to provide access to the image data to the display system and a second port to provide access to the image data to a display device for displaying the image data. A combining circuit is further provided to combine the image data with cursor data in the storing circuit when the storing circuit is being accessed by the display device. However, the combining circuit removes the cursor data from the image data when the image data is being accessed by the display system through the first port.