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1. 发明授权

US4021761A Filter circuit having an acoustic surface-wave filter device 失效
标题翻译：具有声表面波滤波器的滤波电路
公开(公告)号：US4021761A
公开(公告)日：1977-05-03
申请号：US652615
申请日：1976-01-26
申请人： Kokichi Morii , Ken-Ichi Urayama
发明人： Kokichi Morii , Ken-Ichi Urayama
IPC分类号： H03H9/145 , H03H3/08 , H03H9/00 , H03H9/64 , H03H9/04 , H03F13/00 , H03H9/26 , H03H9/32
CPC分类号： H03H9/6403 , H03H9/64
摘要： A filter circuit includes an acoustic surface-wave filter device having an input transducer comprised of a set of interleaved electrodes disposed on a first portion of a body of piezo-electric material adapted to propagate acoustic surface waves for producing an acoustic surface-wave signal in response to an input signal applied to the input transducer, and an output transducer comprised of a set of similar interleaved electrodes disposed on a second portion of the piezo-electric body spaced a selected distance from the first portion for receiving the acoustic surface-wave signals so as to produce a corresponding output signal having a selected frequency response. The frequency response (e.g., bandwidth) of the acoustic surface-wave filter device is controlled by selectively changing the number of conductor elements constituting the interleaved electrodes of the input and output transducers. An amplifier drives the acoustic surface-wave filter device, the gain and output impedance of the amplifier being changed as the frequency response of the acoustic surface-wave filter device changes, so as to compensate for corresponding changes in the insertion loss and input impedance of the filter device.
摘要翻译：滤波器电路包括声表面波滤波器装置，该声表面波滤波器装置具有输入换能器，该输入换能器包括设置在压电材料体的第一部分上的交错电极组，其适于传播声表面波，以产生声表面波信号响应于施加到输入换能器的输入信号，以及输出换能器，其包括设置在压电体的第二部分上的一组相似的交错电极，该第二部分与第一部分间隔开选定的距离，用于接收声表面波信号以产生具有所选择的频率响应的对应的输出信号。通过选择性地改变构成输入和输出换能器的交错电极的导体元件的数量来控制声表面波滤波器装置的频率响应（例如带宽）。放大器驱动声表面波滤波器装置，随着声表面波滤波器装置的频率响应改变，放大器的增益和输出阻抗发生变化，以补偿插入损耗和输入阻抗的相应变化过滤装置。

2. 发明授权

US4163203A Tuning apparatus for selecting preset broadcast frequencies 失效
标题翻译：用于选择预设广播频率的调谐装置
公开(公告)号：US4163203A
公开(公告)日：1979-07-31
申请号：US890916
申请日：1978-03-28
申请人： Kokichi Morii , Kohei Haneishi
发明人： Kokichi Morii , Kohei Haneishi
IPC分类号： H03G3/34 , H03J1/04 , H03J7/02 , H03J1/02 , H03J3/12
CPC分类号： H03G3/348 , H03J1/041 , H03J7/023
摘要： In a tuning apparatus for a broadcast receiver having a dial scale calibrated to represent broadcast frequencies over a predetermined frequency band, and along which an indicator is movable for indicating the broadcast frequency to which the tuning apparatus is actually tuned; a sensor is movable with the indicator, at least one presetting element is movable along the dial scale for indicating a respective preset broadcast frequency and each such element coacts with the sensor whenever the broadcast frequency to which the tuning apparatus is tuned corresponds to the respective preset broadcast frequency, a control signal generator produces a control signal in response to the coaction of the sensor with each of the presetting elements, and a control circuit is responsive to the control signal to control a function of the tuning apparatus, such as, a muting and/or automatic frequency control operation of the tuning Johnson 310 239
摘要翻译：在用于广播接收机的调谐装置中，该调谐装置具有校准以表示预定频带上的广播频率的刻度盘，并且指示符可以沿着该指示器移动以指示调谐装置实际调谐到的广播频率; 传感器可与指示器一起移动，至少一个预设元件可沿着刻度盘移动以指示相应的预设广播频率，并且每当调谐装置被调谐的广播频率对应于相应的预设时，每个这样的元件与传感器共同作用广播频率，控制信号发生器响应于传感器与每个预置元件的共同作用而产生控制信号，并且控制电路响应于控制信号来控制调谐装置的功能，例如静音和/或调谐Johnson 310 239的自动频率控制操作

3. 发明授权

US4263674A Multi-band voltage variable capacitance tuner having automatic and manual tuning operations 失效
标题翻译：具有自动和手动调谐功能的多频段电压可变电容调谐器
公开(公告)号：US4263674A
公开(公告)日：1981-04-21
申请号：US96375
申请日：1979-11-21
申请人： Kokichi Morii , Hajime Shichijo , Kohei Haneishi
发明人： Kokichi Morii , Hajime Shichijo , Kohei Haneishi
IPC分类号： H03J5/00 , H01C10/04 , H01C10/06 , H01C10/38 , H03J1/04 , H03J1/06 , H03J5/02 , H04B1/26 , H03J3/18 , H03J5/32
CPC分类号： H01C10/06 , H01C10/04 , H01C10/38 , H03J1/041 , H03J1/066 , H03J5/0218
摘要： A tuning apparatus includes a dial plate marked with broadcast frequencies thereon, a guide shaft provided in parallel with the dial plate, a substrate having a resistive layer thereon, the resistive layer having varying resistance values distributed therealong which correspond to the broadcast frequencies on the dial plate, the resistive layer being supplied with a DC voltage at opposite ends thereof, a plurality of markers, each slidably disposed with respect to the dial plate to indicate a predetermined broadcast frequency, and each having a first engaging portion and a first electrically conductive slide element for slidably contacting the resistive layer to detect a predetermined DC voltage in response to the location of the markers, a mounting member slidably disposed on the guide shaft in parallel with the dial plate, and including a display member extending therefrom toward the dial plate to indicate a manually selected broadcast frequency, a second electrically conductive slide element for slidably contacting the resistive layer to detect a predetermined DC voltage in response to the location of the mounting member, and a sleeve member slidably mounted on the guide shaft and including a projecting portion adapted to engage the engaging portions of the markers, and a switching circuit supplied with the DC voltages from the first and second slide elements and selectively supplying one of the DC voltages to a tuning circuit as a tuning control voltage.
摘要翻译：调谐装置包括在其上标有广播频率的拨盘，与拨盘相平行设置的引导轴，其上具有电阻层的基板，电阻层具有分布在其上的电阻值，其对应于表盘上的广播频率电阻层在其两端被提供有直流电压，多个标记，每个标记相对于表盘可滑动地设置以指示预定的广播频率，并且每个具有第一接合部分和第一导电滑块元件，用于与所述电阻层滑动接触以响应于所述标记的位置来检测预定的DC电压;安装构件，其与所述表盘平行地可滑动地设置在所述引导轴上，并且包括从所述表盘延伸到所述表盘的显示构件，指示手动选择的广播频率，第二导电滑动 e元件，用于响应于所述安装构件的位置而滑动地接触所述电阻层以检测预定的DC电压;以及套筒构件，其可滑动地安装在所述引导轴上并且包括适于接合所述标记的接合部分的突出部分，以及切换电路提供有来自第一和第二滑动元件的直流电压，并且将一个直流电压选择性地提供给调谐电路作为调谐控制电压。

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