会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 32. 发明授权
    • Production of optically active 2-halo-1-(substituted phenyl)ethanol and
substituted styrene oxide
    • 制备光学活性2-卤代-1-(取代苯基)乙醇和取代的氧化苯乙烯
    • US5756862A
    • 1998-05-26
    • US699457
    • 1996-08-19
    • Hiroki KodamaTakuya MotokawaHiroshi YamaguchiMasanori Yoshida
    • Hiroki KodamaTakuya MotokawaHiroshi YamaguchiMasanori Yoshida
    • C07B57/00C07C29/09C07D303/08C07C29/74
    • C07D303/08C07B57/00C07C29/095C07B2200/07
    • A process for producing optically active 2-halo-1-(substituted phenyl)ethanol of a formula (Ia) or optically active styrene oxide of a formula (Ib). The process comprises the steps of reacting a compound of a formula (II) with phthalic anhydride to give a compound of a formula (III), performing optical resolution on the resulting compound using an optically active organic amine as a resolving agent, and finally performing hydrolysis or alcoholysis on the optically resolved compound (Ia) or (Ib). The scheme of the above process is: ##STR1## wherein X represents a halogen atom, Y represents a hydrogen atom, a halogen atom, a C.sub.1 -C.sub.6 alkyl group, a C.sub.1 -C.sub.6 alkoxy group, a C.sub.1 -C.sub.6 haloalkyl group or a C.sub.1 -C.sub.6 haloalkoxy group, Z represents a hydrogen atom, a halogen atom or a C.sub.1 -C.sub.6 alkyl group, n is 0 or an integer of 1 to 3 and m is 0 or an integer of 1 to 2. The resulting optically active compounds are useful as an intermediate for medicines.
    • 制备式(Ia)的光学活性2-卤代-1-(取代苯基)乙醇或式(Ib)的光学活性氧化苯乙烯的方法。 该方法包括以下步骤:使式(II)的化合物与邻苯二甲酸酐反应,得到式(III)的化合物,使用光学活性的有机胺作为拆分剂对所得的化合物进行光学拆分,最后进行 在光学拆分的化合物(Ia)或(Ib)上进行水解或醇解。 上述方法的方案是:其中X表示卤原子,Y表示氢原子,卤素原子,C1-C6烷基,C1-C6烷基, 烷氧基,C1-C6卤代烷基或C1-C6卤代烷氧基,Z表示氢原子,卤素原子或C1-C6烷基,n为0或1〜3的整数,m为0或 所得光学活性化合物可用作药物的中间体。
    • 33. 发明授权
    • Auto focussing method and device
    • 自动聚焦方法和装置
    • US5752098A
    • 1998-05-12
    • US904933
    • 1997-08-01
    • Shigeo TojiMasanori YoshidaAtsushi Misawa
    • Shigeo TojiMasanori YoshidaAtsushi Misawa
    • G03B13/36G02B7/28G02B7/36H04N5/232
    • G02B7/282
    • A zoom optical system (25) is associated with an image sensor (46), which is disposed behind the zoom optical system for picking up an object (6). The zoom optical system is focussed by use of a photoelectric signal from the image sensor. In a setup mode, the zoom optical system is zoomed from a first magnification to a preset magnification. The zoom optical system has been set at the first magnification. The preset magnification is adapted to focussing. The zoom optical system is focussed in accordance with the photoelectric signal generated while the zoom optical system has the preset magnification. The zoom optical system is zoomed back from the preset magnification to the first magnification, while keeping the zoom optical system in-focus. The zoom optical system becomes in-focus at the first magnification in a manner in which the zoom optical system is in-focus at the preset magnification.
    • 变焦光学系统(25)与图像传感器(46)相关联,图像传感器(46)设置在变焦光学系统后面用于拾取物体(6)。 变焦光学系统通过使用来自图像传感器的光电信号来聚焦。 在设置模式中,变焦光学系统从第一放大倍数变倍至预设倍率。 变焦光学系统已经设置在第一放大率。 预设放大倍数适合于聚焦。 变焦光学系统根据变焦光学系统具有预设放大倍数时产生的光电信号进行聚焦。 将变焦光学系统从预设放大倍率缩小到第一倍率,同时保持变焦光学系统对焦。 变焦光学系统以变焦光学系统以预设放大倍数对焦的方式在第一放大率下变焦。
    • 37. 发明授权
    • Video camera
    • 录影机
    • US5512947A
    • 1996-04-30
    • US220169
    • 1994-03-30
    • Youichi SawachiMasanori Yoshida
    • Youichi SawachiMasanori Yoshida
    • H04N5/235H04N5/16H04N5/18H04N5/20H04N5/243H04N9/72H04N5/232
    • H04N5/20H04N9/72H04N5/185
    • In a video camera, black level correction is turned off in a backlight correction condition or when an AGC gain is high, video signals are converted to digital signals by an A/D converter, the digital video signals are compared with a reference value by a data comparator, and a number of times that the comparison is less than the reference value is counted by an integrator. The reference value, where the counted number of times is the predetermined number of times or more, is determined by a microcomputer, a black level correction value according to the determined reference value is set, and clamp circuits are provided with the black level correction value to correct the black level, thereby preventing a bad influence due to black level correction during exposure correction or when the AGC gain is high, and making black level correction by digital processing.
    • 在摄像机中,在背光校正条件下黑电平校正被关闭,或当AGC增益高时,视频信号由A / D转换器转换为数字信号,数字视频信号与参考值相比较 数据比较器和比较小于参考值的次数由积分器计数。 计数次数为规定次数以上的基准值由微型计算机确定,根据所确定的基准值设定黑电平校正值,向钳位电路提供黑电平校正值 以校正黑电平,从而防止在曝光校正期间或当AGC增益高时由于黑电平校正引起的不良影响,并且通过数字处理进行黑电平校正。