公开(公告)号：US20060231729A1

公开(公告)日：2006-10-19

申请号：US11407311

申请日：2006-04-18

申请人： Yoshio Fukutomi ,  Toru Nagara

发明人： Yoshio Fukutomi ,  Toru Nagara

IPC分类号： G02B27/40 ,  G02B7/04

CPC分类号： G11B7/13 ,  H03H7/40

摘要： A signal-detecting light-receiving device formed as an integrated circuit, which receives a light beam reflected from an optical recording medium, and which outputs a signal obtained from the received reflected light beam, through a current-output-type current amplifier circuit. The light-receiving device includes the following components: at least one resistor configured as a part of the integrated circuit, the at least one resistor being an output resistor used as a termination resistor for an output terminal of the light-receiving device, the output terminal being connected to an output of the current amplifier circuit; and a selecting circuit configured as a part of the integrated circuit, which controls the at least one resistor so as to enable/disable connection of the at least one resistor to the output terminal of the light-receiving device.

摘要翻译： 形成为集成电路的信号检测光接收装置，其接收从光记录介质反射的光束，并且通过电流输出型电流放大器电路输出从接收的反射光束获得的信号。 光接收装置包括以下部件：被配置为集成电路的一部分的至少一个电阻器，所述至少一个电阻器是用作光接收装置的输出端子的终端电阻器的输出电阻器，输出端 端子连接到电流放大器电路的输出端; 以及选择电路，其被配置为集成电路的一部分，其控制所述至少一个电阻器，以便使能/禁止所述至少一个电阻器与所述光接收装置的输出端子的连接。

公开(公告)号：US06891875B2

公开(公告)日：2005-05-10

申请号：US10153486

申请日：2002-05-21

申请人： Toru Nagara ,  Motoi Kimura

发明人： Toru Nagara ,  Motoi Kimura

IPC分类号： G11B7/00 ,  G11B7/005 ,  G11B7/125 ,  G11B7/13 ,  G11B7/135 ,  G11B20/24 ,  H01L31/10 ,  H01S3/06

CPC分类号： G11B7/1263 ,  G11B7/005

摘要： An object of the present invention is to remove a laser beam source noise in an optical disc device.An optical disc device comprises: a laser beam source which outputs a laser beam, a reproducing signal beam-receiver which receives a signal beam from an optical disc and generates a reproducing signal, a beam-source monitoring beam-receiver which detects the laser beam from the laser beam source, and a beam splitter which divides the laser beam from the laser beam source into the beams to the reproducing signal beam-receiver and to the beam-source monitoring beam-receiver; an output signal from the beam-source monitoring beam-receiver being used for removing a noise contained in the reproducing signal from the reproducing signal beam-receiver through a noise cancellation calculation. In the configuration of the optical disc device, an output current of the beam-source monitoring beam-receiver is set so that a laser beam source noise caused by the laser beam source is greater than a circuit-related noise caused by a circuit including the beam receivers.

摘要翻译： 本发明的目的是消除光盘装置中的激光束源噪声。 光盘装置包括：输出激光束的激光束源，从光盘接收信号光束并产生再现信号的再现信号光束接收器，检测激光束的光束源监视光束接收器 以及分束器，其将激光束从激光束源分割成光束到再现信号光束接收器和光束源监视光束接收器; 来自波束源监视波束接收器的输出信号用于通过噪声消除计算从再现信号波束接收器去除包含在再现信号中的噪声。 在光盘装置的结构中，射束源监视用射线接收器的输出电流被设定为使得由激光束源产生的激光束源噪声大于由包括 光束接收器。

公开(公告)号：US06731584B1

公开(公告)日：2004-05-04

申请号：US09606329

申请日：2000-06-29

申请人： Toru Nagara

发明人： Toru Nagara

IPC分类号： G11B700

CPC分类号： G11B7/1267

摘要： An optical information reproducing apparatus and a method of setting the quantity of light in an optical information reproducing apparatus that can be applied to an optical disk apparatus for accessing a phase-change-type optical disk for easily and reliably selecting conditions for driving a laser diode with a drive signal having a high-frequency signal superimposed thereon. The power of a laser beam is set such that the peak power of the laser beam except for a relaxation oscillation component does not exeed a power Pe required to erase data.

摘要翻译： 光学信息再现装置和设置光学信息再现装置中的光量的方法，其可以应用于用于访问相变型光盘的光盘装置，以便容易且可靠地选择驱动激光二极管的条件 具有叠加在其上的高频信号的驱动信号。 激光束的功率被设定为除了弛豫振荡分量之外的激光束的峰值功率不会消除擦除数据所需的功率Pe。

公开(公告)号：US08902968B2

公开(公告)日：2014-12-02

申请号：US12924165

申请日：2010-09-22

申请人： Toru Nagara ,  Futoshi Takeuchi ,  Akihiro Horii ,  Masanori Sato ,  Yuji Anami

发明人： Toru Nagara ,  Futoshi Takeuchi ,  Akihiro Horii ,  Masanori Sato ,  Yuji Anami

IPC分类号： H04N7/12 ,  H04N19/102 ,  H04N19/169 ,  H04N19/115 ,  H04N21/4363 ,  H04N5/57 ,  H04N19/61 ,  H04L1/00 ,  G06F3/147 ,  H04N19/166

CPC分类号： H04N5/57 ,  G06F3/147 ,  G09G2340/02 ,  G09G2350/00 ,  G09G2370/12 ,  G09G2370/16 ,  H04L1/0014 ,  H04L1/0015 ,  H04N7/52 ,  H04N19/102 ,  H04N19/115 ,  H04N19/127 ,  H04N19/157 ,  H04N19/166 ,  H04N19/169 ,  H04N19/61 ,  H04N21/43637

摘要： A transmission apparatus which may include an image encoder, a transmitter, and a controller. The apparatus may encode image data, wirelessly transmit the encoded image data, detect a quality of a wireless transmission of the encoded image data and control an image transmission rate based on the detected quality. The image transmission rate may be controlled within a first response time when being lowered and controlled within a second response time longer than the first response time when being raised.

摘要翻译： 可以包括图像编码器，发送器和控制器的发送装置。 该装置可以对图像数据进行编码，无线传输编码图像数据，检测编码图像数据的无线传输质量，并根据检测到的质量来控制图像传输速率。 当在比提升的第一响应时间长的第二响应时间内降低和控制时，可以在第一响应时间内控制图像传输速率。

公开(公告)号：US08792394B2

公开(公告)日：2014-07-29

申请号：US13211489

申请日：2011-08-17

申请人： Toru Nagara

发明人： Toru Nagara

IPC分类号： H04W24/10

CPC分类号： H04W8/005 ,  H04W24/10 ,  H04W76/00

摘要： A wireless communication apparatus includes a receiving unit configured to receive a response request signal, a transmitting unit configured to transmit a response signal in response to the response request signal, a measuring unit configured to continuously measure received power of the response request signal received by the receiving unit, and a communication control unit configured to cause the transmitting unit to transmit the response signal to a wireless communication apparatus that has transmitted the response request signal if the received power of the response request signal is higher than a threshold value.

摘要翻译： 一种无线通信装置，包括：接收单元，被配置为接收响应请求信号;发送单元，被配置为响应于所述响应请求信号发送响应信号;测量单元，被配置为连续测量由所述响应请求信号接收到的响应请求信号的接收功率; 接收单元，以及通信控制单元，被配置为如果所述响应请求信号的接收功率高于阈值，则使所述发送单元向所述发送了所述响应请求信号的无线通信装置发送所述响应信号。

公开(公告)号：US20110292300A1

公开(公告)日：2011-12-01

申请号：US13110254

申请日：2011-05-18

申请人： Toru Nagara ,  Kanahiro Shirota

发明人： Toru Nagara ,  Kanahiro Shirota

IPC分类号： H04N5/44

CPC分类号： H04W12/08 ,  H04N5/44513 ,  H04N21/4126 ,  H04N21/43637 ,  H04N2005/44521 ,  H04W84/12

摘要： A system and method for establishing communication between an information processing apparatus and a communication device which are capable of communicating with each other in a plurality of communication modes. The method includes receiving at least one request from the communication device at the information processing apparatus, and transmitting at least one response to the at least one request, the at least one response being transmitted from the information processing apparatus to the communication device when the information processing apparatus is in a first communication mode, and not transmitting at least one response when the information processing apparatus is in a second communication mode.

摘要翻译： 一种用于在多个通信模式中建立能够彼此通信的信息处理设备和通信设备之间的通信的系统和方法。 该方法包括在信息处理设备处从通信设备接收至少一个请求，并且向该通信设备发送至少一个响应，该信息处理设备在信息处理设备发送至少一个请求 处理装置处于第一通信模式，并且当信息处理装置处于第二通信模式时不发送至少一个响应。

公开(公告)号：US07307930B2

公开(公告)日：2007-12-11

申请号：US10961161

申请日：2004-10-12

申请人： Toru Nagara ,  Yoshio Fukutomi

发明人： Toru Nagara ,  Yoshio Fukutomi

IPC分类号： B11B7/00

CPC分类号： G11B7/0903

摘要： An optical disk apparatus includes a digital signal processor, a photo-detector circuit, and a sample-and-hold circuit. By using a sampling-timing signal generated by the sampling-timing signal based on a sampling-timing signal transmitted from the digital signal processor to the photo-detector circuit through a flexible cable, the sample-and-hold circuit can be operated. Based on a sampling-timing signal dedicated for a side spot, the sample-and-hold circuit can be operated.

摘要翻译： 光盘装置包括数字信号处理器，光电检测器电路和采样和保持电路。 通过使用基于从数字信号处理器通过柔性电缆发送到光检测器电路的采样定时信号由采样定时信号产生的采样定时信号，可以操作采样保持电路。 基于专用于侧面点的采样定时信号，可以操作采样和保持电路。

公开(公告)号：US07149232B2

公开(公告)日：2006-12-12

申请号：US11108534

申请日：2005-04-18

申请人： Yoshio Fukutomi ,  Toru Nagara

发明人： Yoshio Fukutomi ,  Toru Nagara

IPC分类号： H01S3/00

CPC分类号： G11B20/24 ,  G11B7/005 ,  G11B7/126

摘要： Disclosed herein is a laser noise cancel circuit for reducing laser noises in a reproduction system for an optical disk device including, a gain-variable amplifying noise cancel circuit for amplifying a monitor output signal for laser light, a first low-pass filter for extracting low frequency signal components of a monitor output signal for noise canceling, a second low-pass filter for extracting low frequency signal components, a negative return loop circuit for controlling a gain in the amplifying noise cancel circuit based on the low frequency signal components of the monitor output signal for noise canceling extracted as well as on the low frequency signal components of the reproduced high frequency signal extracted, to determine the low frequency signal component rate of the monitor output signal for noise canceling as identical to the low frequency signal component rate of the reproduced high frequency signal, and an arithmetic circuit for generating the reproduced high frequency signal with the laser noise components cancelled by canceling the laser noise components extracted from the monitor output signal for noise canceling with a low frequency signal component rate determined as identical to the low frequency signal component rate of the reproduced high frequency signal with the laser noise components of the reproduced high frequency signal.

摘要翻译： 这里公开了一种用于减少用于光盘装置的再现系统中的激光噪声的激光噪声消除电路，包括用于放大用于激光的监视器输出信号的增益可变放大噪声消除电路，用于提取低电平的第一低通滤波器 用于噪声消除的监视器输出信号的频率信号分量，用于提取低频信号分量的第二低通滤波器，用于基于监视器的低频信号分量来控制放大噪声消除电路中的增益的负返回环路 提取的噪声消除输出信号以及所提取的再现的高频信号的低频信号分量，以确定用于噪声消除的监视器输出信号的低频信号分量率与低频信号分量速率相同 再现的高频信号，以及用于产生再现的高频信号的运算电路 y信号，其中激光噪声分量通过消除从监视器输出信号提取的用于噪声消除的激光噪声分量被消除，其中低频信号分量速率被确定为与具有激光噪声的再现的高频信号的低频信号分量率相同 再生高频信号的分量。

公开(公告)号：US07095764B2

公开(公告)日：2006-08-22

申请号：US11170218

申请日：2005-06-29

申请人： Katsunori Sato ,  Toru Nagara

发明人： Katsunori Sato ,  Toru Nagara

IPC分类号： H01S3/00

CPC分类号： H01S5/062

摘要： Disclosed herein is a laser driving method including the step of adjusting an initial value of driving current for driving a laser when an operation mode is changed on a basis of a difference in magnitude between a first bias current including information on threshold current of the laser in a first operation mode and a second bias current including information on the threshold current in a second operation mode.

公开(公告)号：US20060158984A1

公开(公告)日：2006-07-20

申请号：US11378272

申请日：2006-03-20

申请人： Toru Nagara

发明人： Toru Nagara

IPC分类号： G11B5/09

CPC分类号： G11B7/1263 ,  G11B7/1275 ,  G11B2007/0006 ,  H01S5/042 ,  H01S5/0683 ,  H01S5/40 ,  H01S5/4087

摘要： A laser diode drive circuit for an optical disc recording and/or reproducing apparatus includes a plurality of laser diodes to output laser beams having different wavelengths, a switch circuit for selectively connecting a required laser diode from a plurality of laser diodes, a laser diode drive power supply circuit for driving the laser diode selectively connected by the switch circuit, a photodiode for detecting at least part of laser beams emitted from the laser diode to convert a detected part of laser beams into an electrical signal, a plurality of current-to-voltage conversion amplifiers connected to an output of the photodiode and whose conversion resistance values can be adjusted and having differently designed center conversion resistance values and an automatic power control circuit connected to outputs of the current-to-voltage conversion amplifiers to output a feedback signal to the laser diode drive power supply circuit. An amplifying circuit for such a laser diode drive power supply circuit, an optical disc recording and/or reproducing apparatus including such a laser diode drive circuit and a laser diode drive method for an optical disc recording and/or reproducing apparatus are also provided.