<p>As the speed and capacity of graphics workstations and personal computers including graphics adapters increases, a display adapter which can be used either in such a high capacity stand alone graphics workstation or in conjunction with a large main frame host computer includes a first processor for managing adapter resources and controlling coordinate transformations; a system storage for storing instructions and data representing information to be displayed; a first-in, first-out input buffer for allowing asynchronous and overlapped communication between the graphics system and a host computer;a second processor for drawing vectors and manipulating areas to be displayed on the monitor;a frame buffer connected to the second processor for storing a bit map of data to be displayed; a colour palette connected to outputs of the frame buffer for providing appropriate colour signals to the monitor; and a hardware cursor circuit for controlling display of a cursor on the monitor.</p>
申请公布号
EP0279226(A2)
申请公布日期
1988.08.24
申请号
EP19880101079
申请日期
1988.01.26
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
GUPTA, SATISH;LUMELSKY, LEON;MANSFIELD, ROBERT LOCKWOOD;ROMERO, HECTOR GERARDO, JR.;SEGRE, MARC;SPENCER, ALEXANDER KOOS;ST. CLAIR, JOE CHRISTOPHER;WAGONER, JAMES DONALD