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1. 发明授权

US5371282A Process for optical resolution of (+)-cis-4-aminocyclopent-2-en-1-carboxylic acid derivative 失效
标题翻译：光学拆分（+） - 顺式-4-氨基环戊-2-烯-1-羧酸衍生物的方法
公开(公告)号：US5371282A
公开(公告)日：1994-12-06
申请号：US128110
申请日：1993-09-29
申请人： Hiroyuki Nohira , Kojiro Hara , Kensuke Nagashima , Tatsuhiko Hayashibara
发明人： Hiroyuki Nohira , Kojiro Hara , Kensuke Nagashima , Tatsuhiko Hayashibara
IPC分类号： C07B57/00 , C07C227/34 , C07C229/48 , C07C231/20 , C07C269/08 , C07B55/00
CPC分类号： C07C231/20 , C07C269/08 , C07C2101/10
摘要： In optical resolution of an optically inactive (.+-.)-cis-4-aminocyclopent-2-en-1-carboxylic acid derivative into its (+)-derivative and (-)-derivative, the (.+-.)-cis-4-aminocyclopent-2-en-l-carboxylic acid derivative is allowed to react with an optically active cis-2-(arylalkylamino)cyclohexanemethanol or optically active .alpha.-alkylbenzylamine serving as an optically resolving agent, to form diastereomer salts corresponding to the (+)-cis-4-aminocyclopent-2-en-1-carboxylic acid derivative and the (-)-cis-4-aminocyclopent-2-en-1-carboxylic acid derivative.
摘要翻译：将光学无活性（+/-） - 顺式-4-氨基环戊-2-烯-1-羧酸衍生物光学拆分成其（+） - 衍生物和（ - ） - 衍生物时，（+/-） - 顺式 -4-氨基环戊-2-烯-1-羧酸衍生物与光学活性顺式-2-（芳烷基氨基）环己烷甲醇或用作光解析剂的光学活性α-烷基苄胺反应，形成对应于（+） - 顺式-4-氨基环戊-2-烯-1-羧酸衍生物和（ - ） - 顺式-4-氨基环戊-2-烯-1-羧酸衍生物。

2. 发明授权

US5157696A Digital signal time difference correcting circuit 失效
标题翻译：数字信号时差校正电路
公开(公告)号：US5157696A
公开(公告)日：1992-10-20
申请号：US643521
申请日：1991-01-18
申请人： Kojiro Hara
发明人： Kojiro Hara
IPC分类号： H04L7/033 , G06F5/06 , H04J3/06
CPC分类号： H04J3/0629 , G06F5/065
摘要： A digital signal time difference correcting circuit used in digital interface circuits for transmitting and receiving a plurality of digital signals. Prior art digital interface circuits in typical tape recorders process signals on two channels using a single cable. Where the number of channels increases to more than two, a plurality of cables need to be used correspondingly. If the cables are different in length or if any cable has a data processing circuit or the like therein, the signals on the cables are out of phase with one another and cannot be processed. The circuit according to the invention comprises a plurality of pairs of storage means relative to a plurality of input signals and a control means. The control means writes each of the digital input signals to either of two storage means constituting each pair thereof. The control means reads data simultaneously from both storage means constituting each storage means pair in accordance with the clock timing of either of the input signals stored therein. This scheme eliminates the time difference of the multiple digital input signals.
摘要翻译：一种用于数字接口电路中用于发送和接收多个数字信号的数字信号时差校正电路。典型的磁带录音机中现有技术的数字接口电路使用单根电缆在两个通道上处理信号。在通道数增加到两个以上的情况下，需要相应地使用多根电缆。如果电缆的长度不同，或者如果电缆中有数据处理电路等，则电缆上的信号彼此不同相，不能进行处理。根据本发明的电路包括相对于多个输入信号的多对存储装置和控制装置。控制装置将每个数字输入信号写入构成其每对的两个存储装置中的任一个。控制装置根据存储在其中的任一个输入信号的时钟定时从构成每个存储装置对的两个存储装置同时读取数据。该方案消除了多个数字输入信号的时差。

3. 发明授权

US5140256A PWM signal demodulation method and apparatus 失效
标题翻译： PWM信号解调方法及装置
公开(公告)号：US5140256A
公开(公告)日：1992-08-18
申请号：US639903
申请日：1991-01-10
申请人： Kojiro Hara
发明人： Kojiro Hara
IPC分类号： G01R29/06 , H03K9/08
CPC分类号： H03K9/08
摘要： A PWM signal demodulation method measuring the leading edge period of a modulated signal and a time between adjoining leading and trailing edges of the signal and finding the modulation factor in terms of the ratio of the period to the time. Reliable demodulation is ensured even if the carrier frequency of the modulated signal varies significantly. This novel method eliminates one disadvantage of the prior art demodulation method encountered when a varying carrier frequency exceeds the linearity domain of an integrator in its integrating characteristic, causing unreliable demodulation.
摘要翻译：一种PWM信号解调方法，测量调制信号的前沿周期和信号的相邻前沿和后沿之间的时间，并根据周期与时间的比率求出调制因子。即使调制信号的载波频率显着变化，也可确保可靠的解调。这种新颖的方法消除了当变化的载波频率超过其积分特性的积分器的线性域时遇到的现有技术解调方法的一个缺点，导致不可靠的解调。

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