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    • 5. 发明授权
    • Image display control device, method and computer program product
    • 图像显示控制装置,方法和计算机程序产品
    • US5828384A
    • 1998-10-27
    • US711870
    • 1996-09-12
    • Keiichi IwasakiToshihiro Tsukagoshi
    • Keiichi IwasakiToshihiro Tsukagoshi
    • G09G5/34G09G5/395G09G5/399G09G5/42G09G5/00
    • G09G5/395G09G5/399G09G2340/12G09G5/42
    • A VRAM stores a plurality of patterns of image data, an offset register stores values which indicate definition starting positions from which display image data are defined from the plurality of patterns of image data, respectively, a horizontal counter counts dots in a horizontal scanning direction, and a vertical counter counts lines in vertical scanning direction. Address and control signals are successively provided for reading a respective line of the display image data from the VRAM within one horizontal scanning period, based on the values of the offset register and the value of the vertical counter. Each of two second storage devices has a storage capacity for storing a thus-read respective line of the image data. Thus-read image data is written at addresses of a predetermined one of the two second storage devices, the addresses corresponding to displaying dots of the image data, while, according to the value of the horizontal counter, image data stored in the other one of the two second storage devices is read out, where, the image data writing and reading operations are performed alternately between the two second storage devices for each horizontal scanning period.
    • VRAM存储多个图像数据图案,偏移寄存器分别存储指示从多个图像数据图案定义显示图像数据的定义开始位置的值,水平计数器对水平扫描方向计数点, 并且垂直计数器在垂直扫描方向上对行进行计数。 连续地提供地址和控制信号,用于基于偏移寄存器的值和垂直计数器的值,在一个水平扫描周期内从VRAM读取显示图像数据的相应行。 两个第二存储装置中的每一个具有用于存储如此读取的图像数据的相应行的存储容量。 这样读取的图像数据被写入两个第二存储装置中的预定的一个的地址,对应于显示图像数据的点的地址,而根据水平计数器的值,存储在另一个中的图像数据 读出两个第二存储装置,其中在每个水平扫描周期中,在两个第二存储装置之间交替地执行图像数据写入和读取操作。
    • 6. 发明授权
    • Memory control device and a delay controller
    • 存储控制装置和延迟控制器
    • US09396789B2
    • 2016-07-19
    • US14879925
    • 2015-10-09
    • Keiichi Iwasaki
    • Keiichi Iwasaki
    • G11C11/4096G11C11/40G11C11/406G11C11/4076G06F13/42G11C7/04G11C7/22
    • G11C11/4076G06F13/1689G06F13/42G11C7/04G11C7/222G11C11/406G11C11/40611G11C11/4096G11C2207/2254Y02D10/14
    • A memory control device includes a plurality of delay circuits to set a delay value for each terminal of a memory, each of the plurality of delay circuits being connected to a terminal of the memory. Further, the memory control device includes a first register to store a first DLL value output by a delay locked loop circuit, a plurality of second registers to store a first setting value to set the delay value for the each terminal of the memory, each of the plurality of second registers being connected to a delay circuit of the plurality of delay circuits, and a delay controller to calculate a second setting value based on the first DLL value, a second DLL value output by the delay locked loop circuit after the first DLL value, and the first setting value, and to update the first setting value to the second setting value.
    • 存储器控制装置包括多个延迟电路,用于为存储器的每个端子设置延迟值,多个延迟电路中的每一个连接到存储器的端子。 此外,存储器控制装置包括:第一寄存器,用于存储由延迟锁定环电路输出的第一DLL值,多个第二寄存器,用于存储第一设定值以设置存储器的每个端子的延迟值, 所述多个第二寄存器连接到所述多个延迟电路的延迟电路,以及延迟控制器,用于基于所述第一DLL值计算第二设定值,所述延迟控制器基于所述第一DLL值,所述延迟锁定环电路在所述第一DLL之后输出的第二DLL值 值和第一设定值,并将第一设定值更新为第二设定值。
    • 7. 发明授权
    • Memory control apparatus and mask timing adjusting method
    • 存储器控制装置和掩模定时调整方法
    • US08432754B2
    • 2013-04-30
    • US13049695
    • 2011-03-16
    • Keiichi Iwasaki
    • Keiichi Iwasaki
    • G11C7/00
    • G11C8/18G11C29/02G11C29/028G11C29/50012
    • A disclosed synchronous memory control apparatus for enabling reception of data read from a memory circuit in synchronism with a strobe signal from the memory circuit includes a mask circuit masking the strobe signal using a mask signal; a timing measuring circuit delaying the strobe signal in plural units of delay and latching data of each of the delayed strobe signals; and a mask generating circuit generating the mask signal. The timing measuring circuit latches the data of each of the delayed strobe signals at the first rise edge of the corresponding masked strobe signal. The mask generating circuit includes a delay circuit having plural units of delay. A start timing of the mask signal is adjusted in synchronism with an internal clock, and a signal having a delay amount corresponding to a selected unit of delay by the delay circuit is outputted as the mask signal.
    • 一种公开的同步存储器控制装置,用于与来自存储器电路的选通信号同步地从存储器电路读取的数据的接收包括使用掩码信号屏蔽选通信号的掩模电路; 定时测量电路延迟所述延迟选通信号中的每一个的延迟和锁存数据的多个单元中的选通信号; 以及产生掩模信号的掩模产生电路。 定时测量电路在对应的屏蔽选通信号的第一个上升沿锁存每个延迟选通信号的数据。 掩模生成电路包括具有多个延迟单位的延迟电路。 屏蔽信号的开始定时与内部时钟同步地被调整,并且输出具有与延迟电路的所选择的延迟单位对应的延迟量的信号作为掩码信号。
    • 8. 发明授权
    • Jitter and skew suppressing delay control apparatus
    • 抖动抑制延迟控制装置
    • US07161854B2
    • 2007-01-09
    • US11167627
    • 2005-06-27
    • Keiichi Iwasaki
    • Keiichi Iwasaki
    • G11C7/00
    • H03L7/0814G11C7/1072G11C7/222H03L7/07H03L7/0805
    • A delay control apparatus includes first and second delay elements each configured to receive and delay a strobe signal and clock by a prescribed delay value. A prescribed number of flip-flops is provided to input data upon receiving the strobe signal output from the second delay element. The second delay element delays and outputs the strobe signal by the prescribed delay value to the flip-flops when the selection device selects the strobe signal. A phase comparator compares clocks output from the first and second delay elements. A delay control device changes the prescribed delay value of the second delay element in accordance with the comparison result of the phase comparator when the selection device selects the clock.
    • 延迟控制装置包括第一和第二延迟元件,每个延迟元件被配置为接收和延迟选通信号和时钟预定的延迟值。 提供规定数量的触发器,用于在接收到从第二延迟元件输出的选通信号时输入数据。 当选择装置选择选通信号时,第二延迟元件将选通信号延迟并输出到触发器。 相位比较器比较从第一和第二延迟元件输出的时钟。 当选择装置选择时钟时,延迟控制装置根据相位比较器的比较结果改变第二延迟元件的规定延迟值。
    • 9. 发明授权
    • Image display control device, method and computer program product
    • 图像显示控制装置,方法和计算机程序产品
    • US5870074A
    • 1999-02-09
    • US747886
    • 1996-11-13
    • Keiichi Iwasaki
    • Keiichi Iwasaki
    • G09G5/18G09G5/30G09G5/32G09G5/377G09G5/38G09G5/42G09G5/22G09G5/26
    • G09G5/42
    • A character table unit stores as attribute data of each character of an image a character name, a horizontal direction character size, a vertical direction character size, a horizontal display coordinate value and, a vertical display coordinate. A counter outputs count values indicating a horizontal position and a vertical position in a display screen image. A first writing control unit reads from the character table unit the attribute data of an appropriate character based on the count values of the counter and the attribute data, produces basic size attribute data of basic size characters which constitute at least part of the character. The basic size character is determined to be currently displayed based on the count values. The basic size character attribute data is written in a hit buffer. A image data memory stores character image data. A second writing control unit reads basic size attribute data from the hit buffer, producing addresses based on the basic size attribute data to read character image data from the image data memory, and writing the character image data into a line buffer. Image data is read from the line buffer, in synchronization with the count value indicating a current horizontal position.
    • 字符表单元将图像的每个字符的属性数据作为字符名称,水平方向字符尺寸,垂直方向字符尺寸,水平显示坐标值和垂直显示坐标存储。 计数器输出指示显示画面图像中的水平位置和垂直位置的计数值。 第一写入控制单元基于计数器和属性数据的计数值从字符表单元读取适当字符的属性数据,生成构成字符的至少一部分的基本大小字符的基本大小属性数据。 根据计数值确定当前显示的基本尺寸字符。 基本大小字符属性数据写入命中缓冲区。 图像数据存储器存储字符图像数据。 第二写入控制单元从命中缓冲器读取基本大小属性数据,根据基本尺寸属性数据产生地址,以从图像数据存储器读取字符图像数据,并将字符图像数据写入行缓冲器。 与指示当前水平位置的计数值同步地从行缓冲器读取图像数据。