公开(公告)号：US06321313B1

公开(公告)日：2001-11-20

申请号：US09300769

申请日：1999-04-27

申请人： Satoki Ishii ,  Yoshitsugu Inoue ,  Masahiro Yamada ,  Toru Noro

发明人： Satoki Ishii ,  Yoshitsugu Inoue ,  Masahiro Yamada ,  Toru Noro

IPC分类号： G06F1216

CPC分类号： G11C5/06 ,  G11C5/04 ,  G11C5/14 ,  G11C5/144

摘要： A determining unit determines which area in an SDRAM is the area in which image data is stored. According to the determination of the determining unit, a control unit activates a power-down mode only for an area in the SDRAM, the image data being stored in the area. In order to determine whether or not the data stored in the SDRAM is image data, a code is previously added to the relevant data. Whether or not the relevant data stored in the SDRAM is image data is determined by the determining unit using the added code. A minimum of only one bit does well as the code for determining whether or not the data stored in the SDRAM is image data. Instead of previously adding a code to relevant data, it is also possible, for the same purpose, to store a code in an internal register of the SDRAM, the code indicating contents of data stored in the SDRAM.

摘要翻译： 确定单元确定SDRAM中的哪个区域是存储图像数据的区域。 根据确定单元的确定，控制单元仅为SDRAM中的区域启动掉电模式，图像数据被存储在该区域中。 为了确定存储在SDRAM中的数据是否是图像数据，先前将代码添加到相关数据。 存储在SDRAM中的相关数据是否是图像数据由确定单元使用添加的代码来确定。 只有一位的最小值与确定SDRAM中存储的数据是否为图像数据的代码一样。 代替以前向相关数据添加代码，为了相同的目的，也可以将代码存储在SDRAM的内部寄存器中，代码指示存储在SDRAM中的数据的内容。

公开(公告)号：US5923829A

公开(公告)日：1999-07-13

申请号：US514863

申请日：1995-08-14

申请人： Satoki Ishii ,  Yoshitsugu Inoue ,  Masahiro Yamada ,  Toru Noro

发明人： Satoki Ishii ,  Yoshitsugu Inoue ,  Masahiro Yamada ,  Toru Noro

IPC分类号： G11C5/00 ,  H01L27/108 ,  G06F1/30 ,  G06F1/32

CPC分类号： G11C5/06 ,  G11C5/04 ,  G11C5/14 ,  G11C5/144

摘要： A determining unit determines which area in an SDRAM is the area in which image data is stored. According to the determination of the determining unit, a control unit activates a power-down mode only for an area in the SDRAM, the image data being stored in the area. In order to determine whether or not the data stored in the SDRAM is image data, a code is previously added to the relevant data. Whether or not the relevant data stored in the SDRAM is image data is determined by the determining unit using the added code. A minimum of only one bit does well as the code for determining whether or not the data stored in the SDRAM is image data. Instead of previously adding a code to relevant data, it is also possible, for the same purpose, to store a code in an internal register of the SDRAM, the code indicating contents of data stored in the SDRAM.

摘要翻译： 确定单元确定SDRAM中的哪个区域是存储图像数据的区域。 根据确定单元的确定，控制单元仅为SDRAM中的区域启动掉电模式，图像数据被存储在该区域中。 为了确定存储在SDRAM中的数据是否是图像数据，先前将代码添加到相关数据。 存储在SDRAM中的相关数据是否是图像数据由确定单元使用添加的代码来确定。 只有一位的最小值与确定SDRAM中存储的数据是否为图像数据的代码一样。 代替以前向相关数据添加代码，为了相同的目的，也可以将代码存储在SDRAM的内部寄存器中，代码指示存储在SDRAM中的数据的内容。