公开(公告)号：DE3473665D1

公开(公告)日：1988-09-29

申请号：DE3473665

申请日：1984-06-25

Applicant: IBM

Inventor： NORMINGTON GLYN ,  SPEED ROBIN CHARLES BENTINCK ,  TUTTLE GRAHAM HUGH

IPC: G11C11/414 ,  G09G5/393 ,  G09G5/42 ,  G11C11/413 ,  H03K19/177 ,  G09G1/16

Abstract: The appts. includes a terminal control unit having I/O devices connected to it and including a data processor (4) to control the unit and to receive high level graphic image orders defining a graphical image from a host processor. A disolay monitor is connected to the control unit via display control logic incorporating a graphic processor (28) connected to receive low level graphic orders from the data processor via a shared memory (27) and to control orders from bit patterns representing the graphical image into a display refresh buffer (32). The data processor, shared storage and graphics processor constitute a pipeline which is controlled by control logic (37) adapted to block operation of the graphics processor until after the data processor has completed processing of each high level graphic order into a complete sequence of low level graphic orders and to allow the graphics processor to process the sequence of low level orders after completion of processing of the associated high level order by the data processor.