公开(公告)号：US20140009392A1

公开(公告)日：2014-01-09

申请号：US14005535

申请日：2012-04-26

申请人： Koichi Ikemoto ,  Junichi Fukutani ,  Yoshitaka Hirabayashi

发明人： Koichi Ikemoto ,  Junichi Fukutani ,  Yoshitaka Hirabayashi

IPC分类号： G06F3/01 ,  H05K7/00

CPC分类号： G06F3/017 ,  G06F1/1694 ,  G06F3/0346 ,  G06F3/038 ,  G06F3/0483 ,  G06F2203/0381 ,  H05K7/00

摘要： An electronic device includes a housing having a display, an angular velocity sensor, an acceleration sensor, and a controller. The angular velocity sensor detects an angular velocity around the X axis parallel to the display. The acceleration sensor detects an acceleration along the Z axis, which is perpendicular to the display and orthogonal to the X axis. The controller performs a first process when the angular velocity sensor detects a positive angular velocity first and then detects a negative angular velocity, and the acceleration sensor detects a change in the acceleration along the Z axis. The controller, on the other hand, performs a second process when the angular velocity sensor detects a negative angular velocity first and then detects a positive angular velocity, and the acceleration sensor detects a change in the acceleration along the Z axis.

摘要翻译： 电子设备包括具有显示器，角速度传感器，加速度传感器和控制器的壳体。 角速度传感器检测与显示器平行的X轴周围的角速度。 加速度传感器检测沿垂直于显示器并与X轴正交的Z轴的加速度。 当角速度传感器首先检测到正角速度，然后检测到负角速度时，控制器执行第一处理，并且加速度传感器检测沿着Z轴的加速度的变化。 另一方面，当角速度传感器首先检测到负角速度，然后检测到正的角速度，并且加速度传感器检测沿着Z轴的加速度的变化时，控制器执行第二处理。

公开(公告)号：US07630686B2

公开(公告)日：2009-12-08

申请号：US10477815

申请日：2003-01-21

申请人： Junichi Fukutani ,  Toshihiro Furusawa ,  Motoyoshi Kitagawa ,  Masashi Yasuda

发明人： Junichi Fukutani ,  Toshihiro Furusawa ,  Motoyoshi Kitagawa ,  Masashi Yasuda

IPC分类号： H04B1/00

CPC分类号： H04B1/1027 ,  H04L27/22 ,  H04L2027/0053 ,  H04L2027/0071

摘要： A radio-frequency signal receiver and its manufacturing method are disclosed. A tuner receives a radio-frequency signal, and a demodulator receives an output signal from the tuner. An error corrector receives an output from the demodulator. A determiner determines whether or not an error rate supplied from the error corrector is not less than a predetermined rate. A controller receives an output from the determiner, and based on the determination, the controller controls a plurality of sections forming the radio-frequency signal receiver. The controller controls selectively one of the plurality of sections, thereby lowering the error rate. A manufacturing method of this receiver makes a memory, coupled to the controller, store a shift-amount of frequency corresponding to an interference signal in a pass-band of a narrow-band filter.

摘要翻译： 公开了射频信号接收机及其制造方法。 调谐器接收射频信号，解调器从调谐器接收输出信号。 误差校正器接收解调器的输出。 确定器确定从错误校正器提供的错误率是否不小于预定速率。 控制器接收来自确定器的输出，并且基于该确定，控制器控制形成射频信号接收器的多个部分。 控制器选择性地控制多个部分之一，从而降低错误率。 这种接收机的制造方法使得耦合到控制器的存储器存储与窄带滤波器的通带中的干扰信号相对应的频率的移位量。

公开(公告)号：US06882693B2

公开(公告)日：2005-04-19

申请号：US09735630

申请日：2000-12-14

申请人： Hiroaki Ozeki ,  Masami Takigawa ,  Hitonobu Furukawa ,  Junichi Fukutani ,  Kazuyori Domoto

发明人： Hiroaki Ozeki ,  Masami Takigawa ,  Hitonobu Furukawa ,  Junichi Fukutani ,  Kazuyori Domoto

IPC分类号： H03H17/06 ,  H04B1/10 ,  H04B1/16 ,  H04B1/26 ,  H04B7/005 ,  H04L27/38 ,  H04N5/44 ,  H04L27/08 ,  H03D1/04

CPC分类号： H04L27/3809

摘要： A digital signal receiver capable of obtaining a favorable receiving performance even if the input signal level changes rapidly is presented. A control voltage for controlling a variable gain amplifier is read by a microprocessor, and an operation-starting point of the variable gain amplifier is shifted by using this control voltage. As a result, a favorable level fluctuation response characteristic is obtained regardless of the input level.

摘要翻译： 即使输入信号电平急剧变化，也能够得到良好的接收性能的数字信号接收机。 用于控制可变增益放大器的控制电压由微处理器读取，并且通过使用该控制电压来移动可变增益放大器的操作起始点。 结果，无论输入电平如何，都获得良好的电平波动响应特性。

公开(公告)号：US06744830B1

公开(公告)日：2004-06-01

申请号：US09670692

申请日：2000-09-28

申请人： Hitonobu Furukawa ,  Hiroaki Ozeki ,  Masami Takigawa ,  Junichi Fukutani ,  Yuichi Watanabe ,  Kazuyori Domoto

发明人： Hitonobu Furukawa ,  Hiroaki Ozeki ,  Masami Takigawa ,  Junichi Fukutani ,  Yuichi Watanabe ,  Kazuyori Domoto

IPC分类号： H04L2708

CPC分类号： H04N5/4401 ,  H03G3/3089 ,  H04H40/18 ,  H04L7/04 ,  H04N5/50 ,  H04N21/4384

摘要： A receiver for a digital broadcasting service have a compatibility between tuning to a desired channel at a short period of time and an improve ment of a bit error rate (BER) characteristics. In a case where a target wave is fluctuated, to prevent the receiver from having a significant declination of BER characteristics and to ensure the reproduction of high quality images, the receiver includes an automatic gain controller including a loop filter in which the frequency range of the loop filter can be switched according to an output of a synchronous state discriminator. The frequency band of the loop filter is selectively adjusted to one setting designed for minimizing the duration for tuning a desired channel before a synchronous state is established. After the synchronous state established, the frequency band of the loop filter is switched to another setting designed for enhancing BER characteristics.

摘要翻译： 用于数字广播服务的接收机具有在短时间段内调谐到期望信道和提高误码率（BER）特性之间的兼容性。 在目标波波动的情况下，为了防止接收机具有BER特性的显着偏差并且确保高质量图像的再现，接收机包括自动增益控制器，该自动增益控制器包括环路滤波器，其中频率范围 可以根据同步状态鉴别器的输出来切换环路滤波器。 环路滤波器的频带被选择性地调整为设计用于在建立同步状态之前最小化用于调谐期望信道的持续时间的一个设置。 在建立同步状态之后，环路滤波器的频带被切换到另一个设计用于提高BER特性的设置。

公开(公告)号：US06038431A

公开(公告)日：2000-03-14

申请号：US400951

申请日：1995-03-08

申请人： Junichi Fukutani ,  Yuichi Watanabe

发明人： Junichi Fukutani ,  Yuichi Watanabe

IPC分类号： H03J1/00 ,  H04B1/38

CPC分类号： H03J1/005

摘要： In a card-type electronic tuner, a digital broadcasting is received without need of hardware reconstruction of a personal computer used for the digital broadcasting reception. The electronic tuner includes a signal input terminal, a local oscillator, a mixer, an output terminal, a PLL circuit and a data input terminal. All of these components are packaged in a card-type case. A digital signal processor includes a digital signal extractor and/or an A/D converter and is connected between the mixer and the output terminal. The digital broadcasting is received and the data is applied directly to the personal computer. The electronic tuner in the shape of a card can be used with an expansion slot for a memory card of the personal computer and there is no need of reconstructing a hardware of the personal computer.

摘要翻译： 在卡型电子调谐器中，不需要用于数字广播接收的个人计算机的硬件重建就可以接收数字广播。 电子调谐器包括信号输入端子，本地振荡器，混频器，输出端子，PLL电路和数据输入端子。 所有这些组件都封装在卡式机箱中。 数字信号处理器包括数字信号提取器和/或A / D转换器，并且连接在混频器和输出端子之间。 接收数字广播，数据直接应用于个人计算机。 卡形式的电子调谐器可以与用于个人计算机的存储卡的扩展槽一起使用，并且不需要重建个人计算机的硬件。