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
    • 2. 发明授权
    • Anti-ringing device for television transmission system
    • 电视传输系统防振装置
    • US4985771A
    • 1991-01-15
    • US281368
    • 1988-12-08
    • Yoshio SugimoriYoshihide KimataTadao KurosakiJoji Urano
    • Yoshio SugimoriYoshihide KimataTadao KurosakiJoji Urano
    • H04N9/64H04N5/205H04N5/21H04N9/77
    • H04N5/205
    • An anti-ringing device for a television signal transmission system in which the frequency band of a luminance component of a video signal from an image device is limited to prevent visible ringing at the receiver. The device includes a signal delay circuit 2 for delaying the video signal obtained by the image device, a low-pass filter 3 capable of changing the frequency band limitation characteristics thereof, a discriminator 4 for providing an output when the luminance component of the video signal contains a source of ringing, and a switch 5 for normally connecting the output of the delay circuit to a signal processor 6. The switch is responsive to the output of the discriminator for connecting the low-pass filter to the signal processor instead of the delay circuit, whose delay time corresponds to the signal processing time required in the discriminator.
    • 一种用于电视信号传输系统的反振铃装置,其中来自图像装置的视频信号的亮度分量的频带被限制以防止在接收机处的可见振铃。 该装置包括用于延迟由图像装置获得的视频信号的信号延迟电路2,能够改变其频带限制特性的低通滤波器3,用于在视频信号的亮度分量时提供输出的鉴别器4 包含振铃源,以及用于将延迟电路的输出正常连接到信号处理器6的开关5.开关响应于鉴别器的输出,用于将低通滤波器连接到信号处理器而不是延迟 电路,其延迟时间对应于鉴别器所需的信号处理时间。
    • 3. 发明授权
    • Method for the preparation of an organosiloxane oligomer and a novel
organosiloxane oligomer thereby
    • 由此制备有机硅氧烷低聚物和新型有机硅氧烷低聚物的方法
    • US4727172A
    • 1988-02-23
    • US905576
    • 1986-09-09
    • Akira YamamotoMinoru TakamizawaToshinobu IshiharaTadao Kurosaki
    • Akira YamamotoMinoru TakamizawaToshinobu IshiharaTadao Kurosaki
    • C07F7/08
    • C07F7/0852C07F7/0874
    • An efficient method is proposed for the preparation of an organosiloxane oligomer represented by the general formula YSi(R.sup.1).sub.n (--O--SiR.sub.3).sub.3-n, in which each of the groups denoted by R and R.sup.1 is a halogen-substituted or unsubstituted monovalent hydrocarbon group having 1 to 8 carbon atoms, Y is a hydrogen atom or a monovalent group selected from methyl, phenyl, vinyl, chloromethyl and 3-(meth)acryloxypropyl groups and n is zero, 1 or 2, by the reaction of an organosilicon halomagnesium salt of the formula R.sub.3 Si--O--MgX, in which X is a halogen atom, and an organosilane compound of the general formula YSi(R.sup.1).sub.n (Z).sub.3-n, in which Z is a halogen atom or a lower alkoxy group. In particular, tetrasiloxane compounds represented by the general formula Y.sup.1 Si[--O--Si(CH.sub.3).sub.2 (CH.sub.2 CH.sub.2 CF.sub.3)].sub.3, in which Y.sup.1 is a hydrogen atom, chloromethyl group or 3-methacryloxypropyl group, are each a novel compound not known in the prior art.
    • 提出了制备由通式YSi(R1)n(-O-SiR 3)3-n表示的有机硅氧烷低聚物的有效方法,其中由R和R 1表示的每个基团是卤素取代或未取代的 具有1至8个碳原子的一价烃基,Y是氢原子或选自甲基,苯基,乙烯基,氯甲基和3-(甲基)丙烯酰氧基丙基的一价基团,并且n为0,1或2,通过 其中X为卤素原子的式R3Si-O-MgX的有机硅卤镁盐和通式YSi(R1)n(Z)3-n的有机硅烷化合物,其中Z为卤素原子或低级 烷氧基。 特别地,由通式Y1Si [-O-Si(CH3)2(CH2CH2CF3)] 3表示的四硅氧烷化合物,其中Y 1为氢原子,氯甲基或3-甲基丙烯酰氧基丙基,均为未知的新化合物 现有技术