APPARATUS FOR PROCESSING MULTIPLE TYPES OF GRAPHICS DATA FOR DISPLAY
 Inventor: Xin Cheng (Simon) Hong, San Jose, Calif.
 Assignee: Trident Microsystems, Inc., Mountain View, Calif.
 Appl. No.: 08/972,461  Filed: Nov. 15, 1997
 Int. CI. G06F 15/16
 U.S. CI 345/502; 345/132; 345/507
 Field of Search 345/132, 501,
345/502, 507, 509, 512, 153, 154, 439
 References Cited
U.S. PATENT DOCUMENTS
5,517,612 5/1996 Dwin et al 345/507
5,808,630 9/1998 Pannell 345/509
A controller card is provided that allows the processing and display of two types of graphics pixel data for display in two environments. The card contains a first graphics controller chip coupled to the video capture port of a second graphics controller chip. In a first mode the first chip may generate graphics pixel data for display in a first environment. The pixel data is stored in the memory of the second chip reserved for graphics pixel data and transmitted to a display device coupled to the second chip. In a second mode, the video capture port may be coupled to a video source so that data captured in the video port is stored in the memory of the chip reserved for video pixel data. The second chip may then process and output to the display device both video pixel data and a second type of graphics pixel data generated by the second chip and stored in the memory of the second chip reserved for graphics pixel data.
12 Claims, 4 Drawing Sheets