Color palette ram and D/A converter

申请公布号：US6225932(B1)

申请号：US20000493148

申请日期：2000.01.28

申请公布日期：2001.05.01

申请人：

OKI ELECTRIC INDUSTRY CO., LTD.

发明人：YANAGIHARA JUNICHI

分类号：G06F12/00;G06F1/00;G06F3/153;G06F12/06;G09G3/20;G09G5/06;G11C7/00;H03M1/66;H03M1/74;(IPC1-7):H03M1/66

主分类号：G06F12/00

摘要：A color palette RAM 100 according to the present invention, which is provided with a RAM 101 for storing color information, an address register 102 that holds an input address and outputs an address to the RAM 101 and a comparator circuit 103 that compares the input address and the address output by the address register, outputs a match signal if these addresses match and stops the operation of the RAM 101 based upon the match signal, is capable of minimizing the level of the power consumed for precharge operations and the like, since the RAM can be set in a disabled state when the same address in the color palette RAM is accessed continuously, as is the case, for instance, when pixels of the same color lie adjacent to one another.

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