Method and structure for improving display data bandwidth in a u

Details Method and structure for improving display data bandwidth in a u Method and structure for improving display data bandwidth in a u

1996-01-16

1998-08-04

Tung, Kee M.

Computer graphics processing and selective visual display system

Computer graphic processing system

Integrated circuit

345509, 345519, G06F 15167

Patent

active

057901384

ABSTRACT:
A computer unified memory architecture (UMA) system and method which includes a unified memory which is partitioned into a main memory and a main frame buffer memory, as well as a separate expansion frame buffer memory. Together, the main frame buffer memory and the expansion frame buffer memory form an entire frame buffer memory. The UMA system performs a display refresh operation by alternately accessing the main frame buffer memory and the expansion frame buffer memory. Because the display data bandwidth is split between the main frame buffer memory and the expansion frame buffer memory, the data bandwidth of the unified memory is effectively increased, thereby enabling higher system performance. The expansion frame buffer memory has a relatively small capacity, thereby retaining much of the cost benefit of a UMA system.

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patent: 5572655 (1996-11-01), Tuljapurkar et al.
patent: 5608427 (1997-03-01), Hoffert et al.
Przybylski, Steven, Microprocessor Report, MoSys Reveals MDRAM Architecture, Radical Alternative Is Not Just Another VRAM, Dec. 25, 1995, pp. 17-20.

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