公开(公告)号：BR9304391A

公开(公告)日：1994-05-24

申请号：BR9304391

申请日：1993-10-29

Applicant: IBM

Inventor： CHEN INCHING ,  HORVATH THOMAS A ,  LEAN ANDY G ,  LIANG BOB C

IPC: G09G5/00 ,  G09G5/393 ,  G06F15/62

Abstract: The present invention provides an integrated display system for multi-media workstations wherein graphics image and video data are merged in a single frame buffer. The integrated display system employs 3-port VRAMs with a first serial access port for display data output, and a random access port for graphics data, a second serial access for video data input. The display system includes a single frame buffer memory system for a multi-media workstation which operates compatibly with display systems and logic designed for dual frame buffer systems and it uses the 3-port VRAM in combination with a means incorporating improved input locking, video update or refresh, and encoded video data input stream.