| 发明名称 |
Graphic system with means for controlling the refreshment of the DRAM. |
| 摘要 |
<p>A graphic system comprises a DRAM with cyclic refresh; during the screen scanning steps (-RTRAM) the refreshes occur at a moving date (tm); the moving date is determined by detecting (DP) the end of reading (ACK-PIX) the last pixel of the line to be displayed; the moving date is ahead ( DELTA t) of the line return signal (RLIG) which rises at a fixed date (ti). <IMAGE></p> |
| 申请公布号 |
EP0322067(A1) |
申请公布日期 |
1989.06.28 |
| 申请号 |
EP19880202955 |
申请日期 |
1988.12.19 |
| 申请人 |
LABORATOIRES D'ELECTRONIQUE ET DE PHYSIQUE APPLIQUEE L.E.P.;N.V. PHILIPS' GLOEILAMPENFABRIEKEN |
发明人 |
CALLEMYN, JEAN-MICHEL;DAVIDOVIC, LUDVIK |
| 分类号 |
G09G1/16;G09G5/36;G11C11/406 |
主分类号 |
G09G1/16 |
| 代理机构 |
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代理人 |
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| 地址 |
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