Title:
グラフィックメモリ装置のリフレッシュ制御方法及び回路
Document Type and Number:
Japanese Patent JP4383567
Kind Code:
B2
Abstract:
Refreshing of a portion of a DRAM device is bypassed when carrying out a refreshing operation on the DRAM device. By bypassing the refreshing of a portion of the DRAM device when carrying out a refreshing operation, the operational speed of the DRAM device and of systems that use the DRAM device can be increased, and/or the power consumption thereof can be decreased. More specifically, graphic memory apparatus include a DRAM device that is divided into a frame buffer zone that supplies pixel data for a display and at least one other zone, such as a z buffer and/or a texture storing zone. Refreshing of the frame buffer zone is bypassed when carrying out a refreshing operation on the DRAM device. In a preferred embodiment, indications of a starting DRAM address and an ending DRAM address for the frame buffer may be stored. A refreshing operation is performed only on those DRAM addresses that fall outside the starting address and the ending address.
Inventors:
Bae Genichi
Application Number:
JP3316399A
Publication Date:
December 16, 2009
Filing Date:
February 10, 1999
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO.,LTD.
International Classes:
G11C11/34; G11C11/406; G06F12/00; G09G5/00; G11C11/401
Domestic Patent References:
| JP2192096A | ||||
| JP8147970A | ||||
| JP10091136A | ||||
| JP10083337A | ||||
| JP7085654A | ||||
| JP7306805A | ||||
| JP63013197A | ||||
| JP5242671A |
Attorney, Agent or Firm:
Masatake Shiga
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro