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    • 3. 发明授权
    • FM tuner
    • FM调谐器
    • US07885628B2
    • 2011-02-08
    • US12222023
    • 2008-07-31
    • Keiji Kobayashi
    • Keiji Kobayashi
    • H04B1/10
    • H04B1/109H04B1/1027H04B1/1081H04B1/1661H04B2001/1045
    • An FM tuner that has a multipath reception detection unit and an adjacent-channel interference detection unit while reducing expansion of the scale of the circuit is available. A control signal for a stereo separation level is generated on the basis of a signal SM-DC corresponding to a reception field strength and of a signal SMP corresponding to a multipath noise component. The SMP is extracted from a fluctuation component signal SM-AC from an S-meter circuit 92 by a multipath noise extraction circuit 104. The multipath noise extraction circuit 104 used for control of the stereo separation level is shared as a portion of the circuitry for detecting the multipath signal reception state. A multipath reception detection unit 108 compares the SMP with a threshold value to detect a multipath reception state.
    • 具有多径接收检测单元和相邻信道干扰检测单元的FM调谐器可以减少电路规模的扩展。 基于对应于接收场强的信号SM-DC和对应于多路径噪声分量的信号SMP产生用于立体声分离电平的控制信号。 通过多路径噪声提取电路104从S计电路92的波动分量信号SM-AC中提取SMP。用于控制立体声分离电平的多路径噪声提取电路104作为电路的一部分共享 检测多径信号接收状态。 多径接收检测单元108将SMP与阈值进行比较,以检测多路径接收状态。
    • 5. 发明授权
    • Slice circuit capable of accurate conversion of an analog signal to a digital signal
    • 切片电路能够将模拟信号精确地转换成数字信号
    • US06686861B1
    • 2004-02-03
    • US10351483
    • 2003-01-27
    • Keiji KobayashiHisayasu Satoh
    • Keiji KobayashiHisayasu Satoh
    • H03M112
    • H03K5/082H03K5/003H04L25/061H04L27/142
    • A slice circuit includes a DC component adjusting circuit, an integrator, a low pass filter, and a comparator. The DC component adjusting circuit adjusts only a DC component in an input signal sent from an input terminal to produce a DC component having a uniform voltage level. The integrator amplifies only a high frequency component of or above a predetermined frequency in the input signal received from the DC component adjusting circuit. The low pass filter detects an average voltage of the input signal received from the DC component adjusting circuit. The comparator compares a voltage of the output signal sent from the integrator with a voltage of an output signal sent from the low pass filter, and provides a digital signal having a logical level corresponding to results of the comparison to an output terminal.
    • 片电路包括直流分量调节电路,积分器,低通滤波器和比较器。 直流分量调整电路仅调整从输入端子发送的输入信号中的直流分量,以产生具有均匀电压电平的直流分量。 积分器只放大从DC分量调节电路接收的输入信号中的预定频率以上的高频分量。 低通滤波器检测从直流分量调整电路接收的输入信号的平均电压。 比较器将从积分器发送的输出信号的电压与从低通滤波器发送的输出信号的电压进行比较,并将具有与输出端比较的逻辑电平对应的逻辑电平提供给数字信号。
    • 8. 发明授权
    • Ultraviolet-curable silicone composition for regulating peel strength
    • 用于调节PEEL强度的超紫外线可固化硅氧烷组合物
    • US5198476A
    • 1993-03-30
    • US722566
    • 1991-06-27
    • Keiji KobayashiKatsuya Kanemaru
    • Keiji KobayashiKatsuya Kanemaru
    • C08G59/18C08F2/50C08G59/00C08G59/20C08G59/30C08G59/68C08L63/00C08L83/06C09D183/06
    • C08L83/06C09D183/06
    • An ultraviolet-curable silicone composition comprising(A) 100 parts by weight of an epoxy-functional polyorganosiloxane which comprises structural units represented by the formula R.sup.1 R.sup.2 SiO, wherein R.sup.1 represents hydrogen atom or a monovalent hydrocarbon group and R.sup.2 represents hydrogen atom, a monovalent hydrocarbon group, or a monovalent epoxy-functional organic group, and in which at least two of all the organic groups are a monovalent epoxy-functional organic group;(B) from 1 to 80 parts by weight of at least one copolymer for regulating peel strength, which is soluble in component (A), selected from the group consisting of (i) a copolymer represented by a unit structure of MQ or M.sup.A Q, (ii) a copolymer represented by a unit structure of M.sup.A T, MT.sup.A or M.sup.A T.sup.A, and (iii) a copolymer represented by a unit structure of M.sup.A DQ, MD.sup.A Q or M.sup.A D.sup.A Q, wherein M represents an R.sup.3.sub.3 SiO.sub.1/2 unit, M.sup.A represents an R.sup.3.sub.2 R.sup.4 SiO.sub.178 unit, D represents an R.sup.3.sub.2 SiO unit, D.sup.A represents an R.sup.3 R.sup.4 SiO unit, T represents an R.sup.3 SiO.sub.3/2 unit, T.sup.A represents an R.sup.4 SiO.sub.3/2 unit, and Q represents an SiO.sub.2 unit, wherein R.sup.3 is a monovalent hydrocarbon group containing no alkenyl group and R.sup.4 is an alkenyl group; and(C) a catalytically effective amount of an onium salt as a photoinitiator.
    • 9. 发明申请
    • Semiconductor device for use in radio tuner and method for manufacturing the same
    • 用于无线电调谐器的半导体装置及其制造方法
    • US20090054022A1
    • 2009-02-26
    • US12222705
    • 2008-08-14
    • Keiji KobayashiFumihiro Sasaki
    • Keiji KobayashiFumihiro Sasaki
    • H04B1/18
    • H04B1/1646H01L2924/0002H03J1/0008H01L2924/00
    • Adjustment work for a radio tuner system IC is reduced. A radio tuner part 30 into which is built a register 54, and an electronic tuning control part 32 into which is built a nonvolatile memory 62 for storing an operation parameter preset in the register 54, are constructed to form a single tuner system IC 20. This structure enables data for the radio tuner part 30 of the same package to be written to the nonvolatile memory 62 at a step for manufacturing the tuner system IC 20. The work of adjusting the nonvolatile memory 62 is performed in conjunction with a finished goods inspection performed after packaging of the tuner system IC. High-speed semiconductor testers are generally used to perform such inspections, and the work of adjusting the nonvolatile memory 62 can also be performed at high speed.
    • 无线电调谐器系统IC的调整工作减少了。 构成寄存器54的无线电调谐器部件30和构成用于存储在寄存器54中预设的操作参数的非易失性存储器62的电子调谐控制部件32构成为单个调谐器系统IC 20。 该结构使得在制造调谐器系统IC 20的步骤中将相同封装的无线电调谐器部分30的数据写入非易失性存储器62.调整非易失性存储器62的工作是与成品检验 在调谐器系统IC封装后执行。 高速半导体测试器通常用于执行这种检查,并且也可以高速执行非易失性存储器62的调整工作。