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    • 15. 发明专利
    • Semiconductor device and control method of the same
    • 半导体器件及其控制方法
    • JP2013021396A
    • 2013-01-31
    • JP2011150859
    • 2011-07-07
    • Elpida Memory Incエルピーダメモリ株式会社
    • ICHIDA HIDEYUKI
    • H03L7/081G11C11/407G11C11/4076H03K5/00H03K5/135H03K5/26
    • H03L7/085G11C7/222H03L7/0814H03L7/0816
    • PROBLEM TO BE SOLVED: To make a DLL circuit correctly lock even when a jitter component is superimposed on a clock signal.SOLUTION: A semiconductor device comprises a delay line 101 creating a clock signal LCLK depending on a count value of a counter part 102 and an inversion control part 103 controlling whether to invert the clock signal LCLK. The inversion control part 103 outputs the clock signal LCLK with or without inversion after resetting the count value of the counter part 102 to a first initial value. Subsequently, the inversion control part 103 resets the count value of the counter part 102 to a second initial value. According to the present invention, though the inversion control part 103 inverts the clock signal LCLK improperly or not inverts the clock signal LCLK improperly due to an influence of jitter and the like, down count (or up count) does not repeat multiple times. Accordingly, offset values can be used as the first and the second initial values.
    • 要解决的问题:即使当抖动分量叠加在时钟信号上时,也使DLL电路正确锁定。 解决方案:半导体器件包括根据计数器部分102的计数值产生时钟信号LCLK的延迟线101和控制是否反转时钟信号LCLK的反相控制部分103。 在将计数器部102的计数值复位为第一初始值之后,反转控制部103输出具有或不具有反转的时钟信号LCLK。 随后,反转控制部103将计数部102的计数值复位为第二初始值。 根据本发明,尽管反转控制部分103由于抖动等的影响而使时钟信号LCLK不正确地反转或不使时钟信号LCLK不正确地反转,但是下降计数(或向上计数)不重复多次。 因此,偏移值可以用作第一和第二初始值。 版权所有(C)2013,JPO&INPIT
    • 18. 发明专利
    • Sampling clock generation circuit, image reading device and electronic apparatus
    • 采样时钟发生电路,图像读取装置和电子装置
    • JP2012195681A
    • 2012-10-11
    • JP2011056726
    • 2011-03-15
    • Ricoh Co Ltd株式会社リコー
    • MIYANISHI ISAMUKANNO TORU
    • H03K5/00H03K5/135H03L7/081H04N1/028H04N5/232
    • H03K5/135H03L7/07H03L7/0814H04N1/047H04N1/19H04N2201/04786
    • PROBLEM TO BE SOLVED: To provide a sampling clock generation circuit that has an aperture delay calibration function of reducing an aperture delay.SOLUTION: The sampling clock generation circuit includes: sampling clock generation means comprising delay circuits 21, 22 and a clock generator 23 for delaying an output clock signal from an SSCG 11 by a predetermined delay to generate a sampling clock signal to be supplied to a sampling hold circuit; a delay flip-flop 24 for comparing the phases of the sampling clock signal and a CCD driving clock signal generated from the output clock signal from the SSCG 11 to output a phase comparison result; and a control logic circuit 20 for controlling the delay by the sampling clock generation means in accordance with the phase comparison result such that the phase difference between the driving clock signal and the sampling clock signal substantially becomes zero.
    • 要解决的问题:提供具有减小孔径延迟的孔径延迟校准功能的采样时钟产生电路。 解决方案:采样时钟产生电路包括:采样时钟产生装置,包括延迟电路21,22和时钟发生器23,用于将来自SSCG 11的输出时钟信号延迟预定延迟,以产生要提供的采样时钟信号 到采样保持电路; 延迟触发器24,用于比较采样时钟信号的相位和从SSCG11的输出时钟信号产生的CCD驱动时钟信号,以输出相位比较结果; 以及控制逻辑电路20,用于根据相位比较结果控制采样时钟产生装置的延迟,使得驱动时钟信号和采样时钟信号之间的相位差基本上变为零。 版权所有(C)2013,JPO&INPIT
    • 20. 发明专利
    • Skew adjusting circuit
    • SKEW调整电路
    • JP2012044489A
    • 2012-03-01
    • JP2010184524
    • 2010-08-20
    • Fujitsu Semiconductor Ltd富士通セミコンダクター株式会社
    • ITO ATSUSHIKOJIMA SUSUMU
    • H03K5/00H03K5/12H03K5/135H03K19/0175
    • PROBLEM TO BE SOLVED: To provide a skew adjusting circuit that can supply skew fitted to the operation state of LSI, etc. to plural signals.SOLUTION: A delay adjusting circuit is provided to an integrated circuit having first and second signal lines through which first and second signals are transmitted, first and second buffer circuits to which the first and second signals transmitted through the first and second signal lines are input, and has first and second delay circuits provided at the respective front stages of the first and second buffer circuits, a skew measuring circuit for measuring skew between the first and second signals, and a delay adjusting circuit for determining delay amounts of the first and second delay circuits on the basis of the measured skew measured by the skew measuring circuit and setting the determined delay amounts to the first and second delay circuits.
    • 要解决的问题:提供一种能够提供与LSI等的操作状态相适应的偏斜等于多个信号的偏斜调整电路。 解决方案:延迟调整电路被提供给具有通过其发送第一和第二信号的第一和第二信号线的集成电路,第一和第二缓冲电路,第一和第二信号通过第一和第二信号线 并且具有设置在第一和第二缓冲电路的各个前级的第一和第二延迟电路,用于测量第一和第二信号之间的偏斜的歪斜测量电路和用于确定第一和第二缓冲电路的延迟量的延迟调整电路 以及第二延迟电路,基于由偏斜测量电路测量的测量偏斜,并将所确定的延迟量设置到第一和第二延迟电路。 版权所有(C)2012,JPO&INPIT