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    • 1. 发明授权
    • System and method for multiple-phase clock generation
    • 用于多相时钟生成的系统和方法
    • US07642865B2
    • 2010-01-05
    • US11616742
    • 2006-12-27
    • Tanmoy SenAnand KumarDeependra Kumar Jain
    • Tanmoy SenAnand KumarDeependra Kumar Jain
    • H03B27/00
    • H03K3/0315H03K3/03H03K5/15013H03K5/15026H03K5/1506H03K2005/00241H03K2005/00247H03L7/095H03L7/0995Y10S331/02
    • A multiple phase clock circuit includes a multiple stage voltage controlled oscillator (VCO) and multiple clock dividers. The VCO is operative at a frequency ‘N’ times higher than the required output frequency and generates ‘M’ equally spaced outputs having different phases but same frequency which are sent to multiple clock dividers. A modified Johnson counter is used as a clock divider. Each counter divides the frequency of the clock signal by N. As a result, each of the M outputs of the VCO are divided into N outputs, thereby making a total of ‘M×N’ equally spaced outputs. These output clock pulses have same frequency but different phases. A sequential logic is provided within the device for enabling the Johnson counters as soon as the VCO starts giving output, thus maintaining the sequence of the output of the Johnson counters.
    • 多相时钟电路包括多级压控振荡器(VCO)和多个时钟分频器。 VCO的工作频率高于所需输出频率的“N”倍,并产生具有不同相位但相同频率的“M”等间距输出,发送到多个时钟分频器。 修改后的约翰逊计数器用作时钟分频器。 每个计数器将时钟信号的频率除以N.结果,VCO的M个输出中的每一个被分成N个输出,从而形成总共“M×N”个等间隔的输出。 这些输出时钟脉冲具有相同的频率但不同的相位。 在该装置内提供一个顺序逻辑,用于一旦VCO开始输出输出就能使约翰逊计数器得以实现,从而保持约翰逊计数器的输出顺序。
    • 2. 发明申请
    • SYSTEM AND METHOD FOR MULTIPLE-PHASE CLOCK GENERATION
    • 多相时钟生成系统与方法
    • US20070200641A1
    • 2007-08-30
    • US11616742
    • 2006-12-27
    • Tanmoy SenAnand KumarDeependra Jain
    • Tanmoy SenAnand KumarDeependra Jain
    • H03K3/03
    • H03K3/0315H03K3/03H03K5/15013H03K5/15026H03K5/1506H03K2005/00241H03K2005/00247H03L7/095H03L7/0995Y10S331/02
    • A multiple phase clock circuit includes a multiple stage voltage controlled oscillator (VCO) and multiple clock dividers. The VCO is operative at a frequency ‘N’ times higher than the required output frequency and generates ‘M’ equally spaced outputs having different phases but same frequency which are sent to multiple clock dividers. A modified Johnson counter is used as a clock divider. Each counter divides the frequency of the clock signal by N. As a result, each of the M outputs of the VCO are divided into N outputs, thereby making a total of ‘M×N’ equally spaced outputs. These output clock pulses have same frequency but different phases. A sequential logic is provided within the device for enabling the Johnson counters as soon as the VCO starts giving output, thus maintaining the sequence of the output of the Johnson counters.
    • 多相时钟电路包括多级压控振荡器(VCO)和多个时钟分频器。 VCO的工作频率高于所需输出频率的“N”倍,并产生具有不同相位但相同频率的“M”等间距输出,发送到多个时钟分频器。 修改后的约翰逊计数器用作时钟分频器。 每个计数器将时钟信号的频率除以N.结果,VCO的M个输出中的每一个被分成N个输出,从而形成总共“M×N”个等间隔的输出。 这些输出时钟脉冲具有相同的频率但不同的相位。 在该装置内提供一个顺序逻辑,用于一旦VCO开始输出输出就能使约翰逊计数器得以实现,从而保持约翰逊计数器的输出顺序。
    • 8. 发明授权
    • Method for determining the concentration of cations in a sample
    • 确定样品中阳离子浓度的方法
    • US5073501A
    • 1991-12-17
    • US304356
    • 1989-01-30
    • Eddy ChapoteauBronislaw P. CzechCarl R. GebauerKoon-Wah LeongAnand Kumar
    • Eddy ChapoteauBronislaw P. CzechCarl R. GebauerKoon-Wah LeongAnand Kumar
    • C07D498/08C07D498/18G01N33/52G01N33/84
    • C07D498/08C07D498/18G01N33/521G01N33/84
    • The invention is reagents and procedures for determining an amount of cations present in a sample, the reagent including one or more chromogenic cryptand compounds of formula I ##STR1## wherein k and j, either same or different, are equal to 1 to about 5;m and n, either same or different, are equal to 0 to about 4;a and e, either same or different, are equal to 0 to about 2;b and d, either same or different, are equal to 0 to about 5;R, either same or different, is hydrogen.lower alkyl, lower alkylidene, lower alkenyl, allyl, or aryl; and-Q- is ##STR2## wherein X is CH, N, or COH; and Y includes ##STR3## except that when Q is ##STR4## wherein Y is p-nitrophenylazo, 3-phenylisothiazolyl-5-azo, isothiazolyl-5-azo, thiazolyl-5-azo, 2,4,6-trinitrophenylazo, p-nitrostyryl, p-benzoquinonemonoimino or bis-(p-dimethylaminophenyl)hydroxymethyl, then the following condition cannot be present: that simultaneously b is equal to 0 or 1, d is equal to 0 or 1, j is equal to 1, n is equal to 1 or 2, a is equal to 1, e is equal to 1, k is equal to 1 and m is equal to 2.
    • 本发明是用于测定样品中存在的阳离子量的试剂和方法,该试剂包括一种或多种式I(I)的显色隐窝化合物,其中相同或不同的k和j相同或不同, 约5; m和n相同或不同,等于0至约4; a和e相同或不同,等于0至约2; b和d相同或不同,等于0至约5; R相同或不同,是氢。 低级烷基,低级亚烷基,低级烯基,烯丙基或芳基; 和-Q-是,其中X是CH,N或COH; 并且Y包括 ,不同之处在于Q是,其中Y是对硝基苯基偶氮,3-苯基异噻唑-5-偶氮,异噻唑-5-偶氮,噻唑基-5 (2,4,6-三硝基苯基偶氮),对硝基苯乙烯基,对苯醌二亚氨基亚氨基或双 - (对二甲基氨基苯基)羟甲基,则不能存在以下条件:同时b等于0或1,d等于 0或1,j等于1,n等于1或2,a等于1,e等于1,k等于1,m等于2。