-
公开(公告)号：US4806876A
公开(公告)日：1989-02-21
申请号：US99001
申请日：1987-09-21
申请人： Akira Usui , Seiji Sakashita , Kiyotake Fukui , Hiroyuki Nagai
发明人： Akira Usui , Seiji Sakashita , Kiyotake Fukui , Hiroyuki Nagai
摘要： A high frequency amplifier circuit based on an amplifying transistor, e.g. a dual-gate FET, having an A.G.C. voltage applied to a control terminal thereof to control the transistor DC operating current, has a diode connected between an input electrode of the transistor and a source of an input high frequency signal. All or part of the DC operating current of the transistor is passed through the diode as the operating current of the diode to thereby produce a high degree of attenuation by the diode when the transistor current level is small, so that reduced cross modulation interference is produced by the transistor when a high degree of gain reduction is executed by A.G.C. control.
摘要翻译： 基于放大晶体管的高频放大器电路，例如， 双栅极FET，具有A.G.C. 施加到其控制端的电压以控制晶体管的DC工作电流，二极管连接在晶体管的输入电极和输入高频信号的源极之间。 晶体管的全部或部分直流工作电流作为二极管的工作电流通过二极管，从而在晶体管电流水平较小时由二极管产生高度的衰减，从而产生减小的交叉调制干扰 通过AGC执行高增益减小时的晶体管 控制。
-
2.发明授权Signal receiver having automatic frequency characteristic adjusting capability 失效具有自动频率特性调整功能的信号接收机
公开(公告)号：US4780909A
公开(公告)日：1988-10-25
申请号：US877451
申请日：1986-06-23
申请人： Seiji Sakashita , Kiyotake Fukui
发明人： Seiji Sakashita , Kiyotake Fukui
CPC分类号： H03J1/0033 , H03J1/0091 , H03J3/06 , H03J5/0245
摘要： A signal receiver generates a reference signal that sweeps frequencies of desired channel bands, and then feeds the reference signal to an input terminal of receiver unit via a signal-switching circuit that performs switching of the desired-channel signal and the reference signal. The signal receiver then detects the signal strength present in plural frequencies of intermediate frequencies delivered to an output terminal of the reference signal, and after storing detected signal data in a memory, the signal receiver compares the detected signal data to desired frequency characteristics. Then, the signal receiver determines tuning voltages of respective tuning circuits so that the differences which arose from the comparison can be minimized. After determining the tuning voltages, these voltages are delivered to respective tuning circuits, and then a switching operation between the reference signal and the desired channel signal is executed before the signal receiver eventually receives the switched signal.
摘要翻译： 信号接收器产生扫描期望信道频带的频率的参考信号，然后经由执行期望信道信号和参考信号的切换的信号切换电路将参考信号馈送到接收机单元的输入端。 然后，信号接收器检测传送到参考信号的输出端的中频的多个频率中存在的信号强度，并且在将检测到的信号数据存储在存储器中之后，信号接收器将检测到的信号数据与期望的频率特性进行比较。 然后，信号接收器确定各个调谐电路的调谐电压，使得可以将从比较产生的差异最小化。 在确定调谐电压之后，将这些电压传送到相应的调谐电路，然后在信号接收器最终接收到切换信号之前执行参考信号和期望的信道信号之间的切换操作。
-
公开(公告)号：US4660215A
公开(公告)日：1987-04-21
申请号：US678032
申请日：1984-12-04
申请人： Yoshio Horiike , Yasuo Nagaishi , Kiyotake Fukui
发明人： Yoshio Horiike , Yasuo Nagaishi , Kiyotake Fukui
CPC分类号： H04L27/26
摘要： A transmitter/receiver system for converting digital information into a multi-frequency signal for transmission. A reference frequency signal is first transmitted, then a series of frequencies having information indicative of differences with the reference signal are transmitted, and a receiver discriminates differences with the reference frequency signal to decode the information.
摘要翻译： 用于将数字信息转换为多频信号以用于传输的发射机/接收机系统。 首先发送参考频率信号，然后发送具有指示与参考信号的差异的信息的一系列频率，并且接收机鉴别与参考频率信号的差异以对信息进行解码。
-
4.发明授权Display device including circuits for driving loads such as electrophoretic displays 失效显示装置，包括用于驱动负载的电路，如电泳显示器
公开(公告)号：US4001809A
公开(公告)日：1977-01-04
申请号：US543007
申请日：1975-01-20
申请人： Kiyotake Fukui , Shuichi Ninomiya
发明人： Kiyotake Fukui , Shuichi Ninomiya
摘要： A display device for a display panel which is operated by both polarities of an applied voltage has a segment driving device connected to a segmental electrode of the display panel, a display controlling device connected to the power source, a resistive element connected between the segmental electrode and the display controlling device, and another resistive element connected between the display controlling device and the common electrode of the display panel. The voltage across the segmental electrode and the common electrode is provided by the segment driving device only when the display controlling device is in a short-circuited condition.
-
公开(公告)号：US5099328A
公开(公告)日：1992-03-24
申请号：US621434
申请日：1990-12-04
申请人： Kazuo Kobo , Yutaka Miki , Kiyotake Fukui , Hiroyasu Shinbo , Mikio Sasaki , Takashi Yamaguchi , Takaaki Gyoten , Hidefumi Horiuchi
发明人： Kazuo Kobo , Yutaka Miki , Kiyotake Fukui , Hiroyasu Shinbo , Mikio Sasaki , Takashi Yamaguchi , Takaaki Gyoten , Hidefumi Horiuchi
IPC分类号： H04N5/21
CPC分类号： H04N5/211
摘要： A ghost canceller includes a ghost cancelling circuit, waveform memories, a CPU, a training signal generating circuit, and a ghost variation detection circuit. By taking in GCR signals from the waveform memories into the CPU, synchronous addition and field sequence processing are effected, and they are transferred to the training signal generating circuit. The input video signal is changed over to the training signal to cancel ghosts, and when ghost variations are is not detected by the ghost variation detection circuit, the input video signal is fed into the ghost cancelling circuit, and is delivered as an output video signal.
-
公开(公告)号：US4197498A
公开(公告)日：1980-04-08
申请号：US855903
申请日：1977-11-29
申请人： Kiyotake Fukui , Tadafumi Nishimura
发明人： Kiyotake Fukui , Tadafumi Nishimura
摘要： In a radio transceiver having a transceiver unit and a remote control unit, a remote control system in which the operation of the transceiver unit is controlled by control signals coupled synchronously from the remote control unit. The remote control unit has a volume control, a squelch level control, a transmit/receive control switch, a channel select code converter etc., and analog and digital switches for synchronously coupling the above signals. The transceiver unit is capable of transmitting/receiving a plurality of radio signals at preselected frequencies and the operation is controlled by signals regenerated synchronously from the control signals received from the remote control unit.
摘要翻译： 在具有收发器单元和遥控单元的无线电收发器中，遥控系统通过与遥控单元同步耦合的控制信号来控制收发器单元的操作。 遥控单元具有音量控制，静噪电平控制，发送/接收控制开关，频道选择码转换器等，以及用于同步耦合上述信号的模拟和数字开关。 收发器单元能够以预选频率发送/接收多个无线电信号，并且由从遥控单元接收的控制信号同步再生的信号控制该操作。
-
公开(公告)号：US4896213A
公开(公告)日：1990-01-23
申请号：US885825
申请日：1986-07-15
申请人： Kazuo Kobo , Kiyotake Fukui , Toshiro Nozoe , Noriaki Morotomi
发明人： Kazuo Kobo , Kiyotake Fukui , Toshiro Nozoe , Noriaki Morotomi
摘要： A ghost cancelling reference signal transmission/reception system, which allows a built-in ghost cancelling device to eliminate group-delay distortion, frequency-amplitude characteristic distortion, ghost components generated in a signal transmission path. A digital signal is superposed on a television signal in a vertical blanking period of the television signal as a ghost cancelling reference signal.
摘要翻译： 重影消除参考信号发送/接收系统，其允许内置重影消除装置消除组延迟失真，频率幅度特性失真，在信号传输路径中产生的重影分量。 数字信号在电视信号的垂直消隐期间叠加在电视信号上作为重影消除参考信号。
-
公开(公告)号：US4027274A
公开(公告)日：1977-05-31
申请号：US589546
申请日：1975-06-23
CPC分类号： H03L7/10 , H03L7/148 , Y10S331/02
摘要： A phase locked loop circuit comprises a phase comparator having an operation range with specific limits for phase comparing. A voltage-controlled oscillator produces an output at the output of the phase locked loop. At the same time, the oscillator output is fed to the phase comparator. A detector circuit, supplied with the output of the phase comparator, detects any exceeding of a specific limit of the phase by comparing the operation range of the phase comparator with a phase deviation of the oscillator output signal fed to the phase comparator. The detector produces an output correction voltage. An adder circuit adds this output correction voltage and an output error voltage of the phase comparator and supplies the resulting added voltage, as a control voltage, to the voltage-controlled oscillator. This phase locked loop operates in a state wherein the lock range thereof has been equivalently expanded by the correction voltage.
摘要翻译： 锁相环电路包括具有用于相位比较的特定限制的操作范围的相位比较器。 压控振荡器在锁相环的输出端产生一个输出。 同时，振荡器输出被馈送到相位比较器。 提供有相位比较器的输出的检测器电路通过将相位比较器的操作范围与馈送到相位比较器的振荡器输出信号的相位偏差进行比较来检测超过相位的特定极限。 检测器产生输出校正电压。 加法器电路将该输出校正电压和相位比较器的输出误差电压相加，并将所得到的附加电压作为控制电压提供给压控振荡器。 该锁相环在其锁定范围已被等效地扩大了校正电压的状态下工作。
-
公开(公告)号：US4009455A
公开(公告)日：1977-02-22
申请号：US612297
申请日：1975-09-11
申请人： Yukinobu Ishigaki , Kiyotake Fukui
发明人： Yukinobu Ishigaki , Kiyotake Fukui
CPC分类号： H03C3/095
摘要： An angle modulation system comprises a voltage controlled oscillator, and at least one frequency divider for dividing the frequency of the output of the voltage controlled oscillator. A phase comparator responds to the output of the frequency divider and to a reference signal supplied from a reference signal oscillator, through another frequency divider. A frequency selection circuit is provided in the path extending from the output side of the voltage controlled oscillator, through the frequency divider, to the phase comparator. This selection circuit eliminates an undesired side band component in the output of the voltage controlled oscillator and derives a required carrier component. An adder adds an input modulation signal and the output of the phase comparator, and applies the resulting signal to the voltage controlled oscillator. From the output of the voltage controlled oscillator, an angle-modulated wave signal is derived with a large signal to noise ratio and large modulation index.
摘要翻译： 角度调制系统包括压控振荡器和用于分压压控振荡器的输出频率的至少一个分频器。 相位比较器通过另一个分频器响应分频器的输出和从参考信号振荡器提供的参考信号。 在从压控振荡器的输出侧通过分频器延伸到相位比较器的路径中提供频率选择电路。 该选择电路消除了压控振荡器的输出中的不期望的边带分量并导出所需的载波分量。 加法器将输入调制信号和相位比较器的输出相加，并将得到的信号施加到压控振荡器。 从压控振荡器的输出，导出角度调制波信号，信噪比大，调制指数大。
-
-
-
-
-
-
-
-
搜索结果
9 条记录 (耗时 0.019 秒)