公开(公告)号：US20100202552A1

公开(公告)日：2010-08-12

申请号：US12599904

申请日：2008-05-14

申请人： Atsushi Sakai ,  Arnaud Santraine ,  Akira Saito ,  Masayuki Natsumi ,  Mamoru Okazaki ,  Kazumasa Kioi

发明人： Atsushi Sakai ,  Arnaud Santraine ,  Akira Saito ,  Masayuki Natsumi ,  Mamoru Okazaki ,  Kazumasa Kioi

IPC分类号： H04L1/02

CPC分类号： H04L27/2662 ,  H04L5/0007 ,  H04L27/2605 ,  H04L27/2657 ,  H04L27/2676 ,  H04L27/2688

摘要： In a case where there are a plurality of spurious disturbing waves, each of which has a strong peak at a particular frequency, in a transmission band, correlation between the disturbing waves becomes nonconstant so that it becomes difficult to remove the correlation between the disturbing waves. An OFDM demodulator of the present invention includes a symbol integration circuit (131) for integrating a guard correlation signal in a symbol number direction, and an offset removal circuit (132) for removing an offset from the guard correlation signal integrated in the symbol number direction. An amplitude component due to the disturbing wave, which amplitude component is included in the guard correlation signal, is cancelled by the integration in the symbol number direction, so that it is possible to successfully remove the offset from the guard correlation signal. Therefore, it is possible to obtain symbol timing more precisely by use of a maximum value detecting circuit (124), and further, calculate a phase rotation amount more precisely by use of a phase finding circuit (125).

摘要翻译： 在存在多个在特定频率具有强峰值的杂散干扰波的情况下，在传输频带中，干扰波之间的相关性变得不恒定，从而难以消除干扰波之间的相关性 。 本发明的OFDM解调器包括用于对符号数方向的保护相关信号进行积分的符号积分电路（131）和用于从符号数方向上积分的保护相关信号中去除偏移的偏移消除电路（132） 。 在保护相关信号中包含振幅分量的干扰波的振幅分量通过符号数方向的积分而消除，从而可以成功地从保护相关信号中去除偏移。 因此，可以通过使用最大值检测电路（124）更精确地获得符号定时，并且还通过使用相位求和电路（125）更精确地计算相位旋转量。

公开(公告)号：US20090268856A1

公开(公告)日：2009-10-29

申请号：US12439499

申请日：2007-07-05

申请人： Mamoru Okazaki ,  Kazumasa Kioi ,  Akira Saito ,  Masayuki Natsumi ,  Atsushi Sakai

发明人： Mamoru Okazaki ,  Kazumasa Kioi ,  Akira Saito ,  Masayuki Natsumi ,  Atsushi Sakai

IPC分类号： H04L27/08 ,  H04L27/06

CPC分类号： H03J1/0008 ,  H04L27/2647 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2662 ,  H04N5/4401 ,  H04N21/4383 ,  H04N21/6112

摘要： This demodulation device receives and demodulates a digital broadcast wave. This demodulation device includes an RF search control unit (41) and a GI search control unit (42). The RF search control unit (41) determines whether or not there is a broadcast wave in a certain channel, in accordance with an intensity of a signal outputted from a tuner (12) for receiving a digital broadcast wave. The GI search control unit (42) determines whether or not the broadcast wave is digital, based on whether or not the signal outputted from the tuner (12) contains a guard interval. Thus, the demodulation device is capable of efficiently searching for a channel containing a digital broadcast wave.

摘要翻译： 该解调装置接收并解调数字广播波。 该解调装置包括RF搜索控制单元（41）和GI搜索控制单元（42）。 RF搜索控制单元（41）根据从用于接收数字广播波的调谐器（12）输出的信号的强度来确定某个频道中是否存在广播波。 GI搜索控制单元（42）基于从调谐器（12）输出的信号是否包含保护间隔来确定广播波是否是数字的。 因此，解调装置能够有效地搜索包含数字广播波的信道。

公开(公告)号：US08194806B2

公开(公告)日：2012-06-05

申请号：US12439499

申请日：2007-07-05

申请人： Mamoru Okazaki ,  Kazumasa Kioi ,  Akira Saito ,  Masayuki Natsumi ,  Atsushi Sakai

发明人： Mamoru Okazaki ,  Kazumasa Kioi ,  Akira Saito ,  Masayuki Natsumi ,  Atsushi Sakai

IPC分类号： H04L27/08

CPC分类号： H03J1/0008 ,  H04L27/2647 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2662 ,  H04N5/4401 ,  H04N21/4383 ,  H04N21/6112

摘要： This demodulation device receives and demodulates a digital broadcast wave. This demodulation device includes an RF search control unit (41) and a GI search control unit (42). The RF search control unit (41) determines whether or not there is a broadcast wave in a certain channel, in accordance with an intensity of a signal outputted from a tuner (12) for receiving a digital broadcast wave. The GI search control unit (42) determines whether or not the broadcast wave is digital, based on whether or not the signal outputted from the tuner (12) contains a guard interval. Thus, the demodulation device is capable of efficiently searching for a channel containing a digital broadcast wave.

摘要翻译： 该解调装置接收并解调数字广播波。 该解调装置包括RF搜索控制单元（41）和GI搜索控制单元（42）。 RF搜索控制单元（41）根据从用于接收数字广播波的调谐器（12）输出的信号的强度来确定某个频道中是否存在广播波。 GI搜索控制单元（42）基于从调谐器（12）输出的信号是否包含保护间隔来确定广播波是否是数字的。 因此，解调装置能够有效地搜索包含数字广播波的信道。

公开(公告)号：US07881672B2

公开(公告)日：2011-02-01

申请号：US11654579

申请日：2007-01-18

申请人： Nobuyoshi Kaiki ,  Takae Sakai ,  Masayuki Natsumi ,  Kazumasa Kioi

发明人： Nobuyoshi Kaiki ,  Takae Sakai ,  Masayuki Natsumi ,  Kazumasa Kioi

IPC分类号： H04B17/00

CPC分类号： H04L27/3863

摘要： A digital demodulating apparatus comprises a tuner constituted by circuit elements to perform channel select processing to a signal; a demodulator that performs demodulation processing to a signal output from the tuner; a power supply unit that supplies a normal power to each circuit element, and supplies to the circuit element a test power different from the normal power, over a first time period in place of the normal power; a test noise measuring unit that measures the intensity of test noise contained in a signal to be output from the tuner, when the power supply unit supplies the test power over the first time period; a comparing unit that compares the intensity of the test noise measured by the test noise measuring unit with a noise reference value as a reference for updating of the normal power; and a power updating unit that updates the intensity of the normal power on the basis of a result of the comparison by the comparing unit.

摘要翻译： 数字解调装置包括由电路元件构成的调谐器，以对信号执行信道选择处理; 解调器，对从调谐器输出的信号进行解调处理; 电源单元，其向每个电路元件提供正常功率，并且在第一时间段内代替正常功率向电路元件提供不同于正常功率的测试功率; 测试噪声测量单元，当所述电源单元在所述第一时间段内提供测试功率时，测量从所述调谐器输出的信号中包含的测试噪声的强度; 比较单元，其将由所述测试噪声测量单元测量的测试噪声的强度与噪声参考值作为用于更新所述正常功率的参考值进行比较; 以及功率更新单元，其基于比较单元的比较结果来更新正常功率的强度。

公开(公告)号：US20070275680A1

公开(公告)日：2007-11-29

申请号：US11654579

申请日：2007-01-18

申请人： Nobuyoshi Kaiki ,  Takae Sakai ,  Masayuki Natsumi ,  Kazumasa Kioi

发明人： Nobuyoshi Kaiki ,  Takae Sakai ,  Masayuki Natsumi ,  Kazumasa Kioi

IPC分类号： H04B1/18

CPC分类号： H04L27/3863

摘要： A digital demodulating apparatus comprises a tuner constituted by circuit elements to perform channel select processing to a signal; a demodulator that performs demodulation processing to a signal output from the tuner; a power supply unit that supplies a normal power to each circuit element, and supplies to the circuit element a test power different from the normal power, over a first time period in place of the normal power; a test noise measuring unit that measures the intensity of test noise contained in a signal to be output from the tuner, when the power supply unit supplies the test power over the first time period; a comparing unit that compares the intensity of the test noise measured by the test noise measuring unit with a noise reference value as a reference for updating of the normal power; and a power updating unit that updates the intensity of the normal power on the basis of a result of the comparison by the comparing unit.

摘要翻译： 数字解调装置包括由电路元件构成的调谐器，以对信号执行信道选择处理; 解调器，对从调谐器输出的信号进行解调处理; 电源单元，其向每个电路元件提供正常功率，并且在第一时间段内代替正常功率向电路元件提供不同于正常功率的测试功率; 测试噪声测量单元，当所述电源单元在所述第一时间段内提供测试功率时，测量从所述调谐器输出的信号中包含的测试噪声的强度; 比较单元，其将由所述测试噪声测量单元测量的测试噪声的强度与噪声参考值作为用于更新所述正常功率的参考值进行比较; 以及功率更新单元，其基于比较单元的比较结果来更新正常功率的强度。

公开(公告)号：US5745005A

公开(公告)日：1998-04-28

申请号：US664113

申请日：1996-06-14

申请人： Masayuki Natsumi

发明人： Masayuki Natsumi

IPC分类号： H04B10/61 ,  H03D3/00 ,  H03D9/00 ,  H04B1/16 ,  H04B10/516 ,  H04B10/524 ,  H04B10/556 ,  H04L25/02 ,  H04L27/00 ,  H04L27/06 ,  H04L27/22

CPC分类号： H03D3/00 ,  H04L27/0008 ,  H03D9/00

摘要： A communication device which is capable of automatically discriminating whether a received signal is a carrier-wave-modulated signal or a single-pulse-modulated signal and obtaining a corresponding demodulated signal, thereby reducing a burden to a user in using the device. The device comprises a demodulating circuit for demodulating a carrier-wave-modulated signal, a demodulating circuit for demodulating single-pulse-modulated signal, a switch circuit for selecting either of two demodulating circuits and a carrier detecting circuit for detecting the presence or absence of a carrier-frequency component of the carrier-wave-modulated signal, characterized that the switch circuit selects an output of the demodulating circuit for the carrier-wave-modulated signal when the carrier of the carrier-wave-modulated signal is detected by the carrier detecting circuit.

摘要翻译： 一种能够自动识别接收信号是载波调制信号还是单脉冲调制信号并获得对应的解调信号的通信装置，从而减轻用户在使用该设备时的负担。 该装置包括用于解调载波调制信号的解调电路，用于解调单脉冲调制信号的解调电路，用于选择两个解调电路中的任一个的开关电路和用于检测是否存在 载波调制信号的载波频率分量，其特征在于，当载波检测信号的载波被载波检测时，开关电路选择用于载波调制信号的解调电路的输出 检测电路。

公开(公告)号：US06363137B1

公开(公告)日：2002-03-26

申请号：US09283582

申请日：1999-04-01

申请人： Atsushi Nakao ,  Masayuki Natsumi ,  Takashi Yoshida ,  Susumu Kitaguchi

发明人： Atsushi Nakao ,  Masayuki Natsumi ,  Takashi Yoshida ,  Susumu Kitaguchi

IPC分类号： H04M124

CPC分类号： H04M1/72527

摘要： Objects of the invention are to enable different kinds of communication apparatus having interfaces of different input/output methods and different signal voltages to be connected to the same interface; to achieve communication processing appropriate to the automatically detected attribute of the communication apparatus; to explicitly indicate optimum communication means; and to enable communications to be automatically resumed even if the communication apparatus is replaced in the middle of communication. The communication apparatus comprises: means for sending the connected state of the communication apparatus and an attribute of the communication apparatus which connected to information terminal apparatus; a signal line for sending a connection notification to the information terminal apparatus; and a signal input section and a signal output section for transferring control signals and data to and from the information terminal apparatus.

摘要翻译： 本发明的目的是使具有不同输入/输出方法和不同信号电压的接口的不同种类的通信装置能够连接到同一接口; 以实现与通信设备的自动检测属性相适应的通信处理; 明确指出最佳通信手段; 并且即使在通信中间更换通信装置，也能够自动恢复通信。 通信装置包括：发送通信装置的连接状态的装置和连接到信息终端装置的通信装置的属性; 用于向所述信息终端装置发送连接通知的信号线; 信号输入部和信号输出部，用于向信息终端装置传送控制信号和数据。

公开(公告)号：US20140139915A1

公开(公告)日：2014-05-22

申请号：US14131169

申请日：2012-07-06

申请人： Yuichi Sato ,  Kenji Maeda ,  Masayuki Natsumi ,  Tatsuo Watanabe ,  Kazuya Takayama ,  Takashi Yasumoto ,  Yoshimitsu Inamori

发明人： Yuichi Sato ,  Kenji Maeda ,  Masayuki Natsumi ,  Tatsuo Watanabe ,  Kazuya Takayama ,  Takashi Yasumoto ,  Yoshimitsu Inamori

IPC分类号： G02B27/22

CPC分类号： G02B27/2214 ,  G03B35/24 ,  G09G3/003 ,  G09G3/20 ,  G09G3/3607 ,  H04N13/305 ,  H04N13/324

摘要： An image display apparatus having sub-pixels of four colors is provided in which the resolution when an image is two-dimensionally displayed is not affected, and deterioration in the color balance of a three-dimensionally displayed image is suppressed. In the image display apparatus, the arrangement of a sub-pixel for displaying red for a left eye and a sub-pixel for displaying green for a right eye has been replaced with the arrangement of a sub-pixel (Lg1) for displaying green for the left eye and a sub-pixel (Rr1) for displaying red for the right eye. The arrangement of a sub-pixel for displaying blue for the left eye and a sub-pixel for displaying yellow for the right eye has been replaced with the arrangement of a sub-pixel (Lx1) for displaying yellow for the left eye and a sub-pixel (Rb1) for displaying blue for the right eye. Replacement with the sub-pixel and the sub-pixel and replacement with the sub-pixel and the sub-pixel are made for every other pixel.

摘要翻译： 提供一种具有四色子像素的图像显示装置，其中不影响图像二维显示时的分辨率，并且抑制三维显示图像的色平衡劣化。 在图像显示装置中，用于显示用于左眼的红色的子像素和用于显示用于右眼的绿色的子像素的布置已被替换为用于显示绿色的子像素（Lg1） 左眼和用于右眼显示红色的子像素（Rr1）。 用于显示用于左眼的蓝色的子像素和用于显示用于右眼的黄色的子像素的布置已被替换为用于显示用于左眼的黄色的子像素（Lx1）和用于显示黄色的子像素 用于显示右眼的蓝色的像素（Rb1）。 使用子像素和子像素进行替换，并且对于每个其他像素进行子像素和子像素的替换。

公开(公告)号：US5734379A

公开(公告)日：1998-03-31

申请号：US579599

申请日：1995-12-26

申请人： Masayuki Natsumi ,  Kazutomo Fujita ,  Toshio Nishimura ,  Masami Azuma

发明人： Masayuki Natsumi ,  Kazutomo Fujita ,  Toshio Nishimura ,  Masami Azuma

IPC分类号： G09G3/36 ,  G09G5/00

CPC分类号： G09G3/3681 ,  G09G3/3696 ,  G09G2330/021

摘要： The present invention discloses a liquid crystal display device capable of reducing charges to be supplied from a driving circuit, increasing response speed of liquid crystals and delivering superior display. A liquid crystal display device is provided with a switching circuit between scanning electrodes of a liquid crystal display panel 25 and a common driver. The switching circuit is provided with switching elements, and each switching element is disposed between two scanning electrodes adjacent to each other. Furthermore, each switching element is turned on and off by a control means. For a predetermined period after the completion of a horizontal scanning period, a scanning electrode, to which a selection potential has been applied during the horizontal scanning period, and a scanning electrode, to which the selection potential is to be applied next are isolated once from a power supply circuit, and then electrically connected to each other by turning on the switching element so as to have an identical potential. With this structure, power to be supplied from the common driver can be reduced.

摘要翻译： 本发明公开了一种液晶显示装置，其能够降低从驱动电路供给的电荷，提高液晶的响应速度并提供优异的显示。 液晶显示装置在液晶显示面板25的扫描电极和公共驱动器之间设置有切换电路。 开关电路设置有开关元件，并且每个开关元件设置在彼此相邻的两个扫描电极之间。 此外，通过控制装置使每个开关元件接通和断开。 在水平扫描周期完成之后的预定时间段，在水平扫描周期期间已经施加了选择电位的扫描电极和下一个施加选择电位的扫描电极被隔离一次从 电源电路，然后通过使开关元件导通而具有相同的电位而彼此电连接。 利用这种结构，可以减少从公共驱动器提供的功率。