公开(公告)号：US07929862B2

公开(公告)日：2011-04-19

申请号：US11045486

申请日：2005-01-31

Applicant: Katsuhiko Hakomori ,  Hiroshi Nishimoto ,  Akihiko Ichikawa

Inventor： Katsuhiko Hakomori ,  Hiroshi Nishimoto ,  Akihiko Ichikawa

IPC: H04J14/00

CPC classification number: H04J14/0282 ,  H04B10/85 ,  H04J14/0226 ,  H04J14/0232 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0298

Abstract: After implementing a scrambler upon an electric signal of digital signals to be transmitted to a user terminal, this electric signal is converted into a digital optical signal, and an analog optical signal and this digital optical signal are multiplexed by wavelength division multiplexing, thereby reducing influence of cross-talk interference that is exerted on the analog optical signal by the digital optical signal.

Abstract translation: 在对要发送给用户终端的数字信号的电信号实施加扰器之后，该电信号被转换为数字光信号，并且模拟光信号和该数字光信号通过波分复用复用，从而减少影响 由数字光信号施加在模拟光信号上的串扰干扰。

公开(公告)号：US20080074153A1

公开(公告)日：2008-03-27

申请号：US11858258

申请日：2007-09-20

Applicant: Katsuhiko Hakomori

Inventor： Katsuhiko Hakomori

IPC: H03K5/1532

CPC classification number: G01R31/021 ,  H03K5/1532 ,  H03K5/24

Abstract: A line trouble detecting circuit comprises a peak detecting circuit, a first comparison circuit, a bottom detecting circuit, a bottom detecting circuit, a second comparison circuit, and a signal keeping circuit.The peak detecting circuit detects a peak voltage of amplitude of the one of the differential signal. The first comparison circuit compares an output of the peak detector and a first reference voltage. The bottom detecting circuit detects bottom voltage of the amplitude of the one of the differential signal. The second comparison circuit compares an output of the bottom detecting circuit and a second reference voltage. The signal keeping circuit keeps a signal from the first comparison circuit or the second comparison circuit.

Abstract translation: 线路故障检测电路包括峰值检测电路，第一比较电路，底部检测电路，底部检测电路，第二比较电路和信号保持电路。 峰值检测电路检测差分信号之一的振幅的峰值电压。 第一比较电路比较峰值检测器的输出和第一参考电压。 底部检测电路检测差分信号之一的振幅的底部电压。 第二比较电路比较底部检测电路的输出和第二参考电压。 信号保持电路保持来自第一比较电路或第二比较电路的信号。

公开(公告)号：US20060067693A1

公开(公告)日：2006-03-30

申请号：US11045486

申请日：2005-01-31

Applicant: Katsuhiko Hakomori ,  Hiroshi Nishimoto ,  Akihiko Ichikawa

Inventor： Katsuhiko Hakomori ,  Hiroshi Nishimoto ,  Akihiko Ichikawa

IPC: H04J14/02

CPC classification number: H04J14/0282 ,  H04B10/85 ,  H04J14/0226 ,  H04J14/0232 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0298

Abstract: After implementing a scrambler upon an electric signal of digital signals to be transmitted to a user terminal, this electric signal is converted into a digital optical signal, and an analog optical signal and this digital optical signal are multiplexed by wavelength division multiplexing, thereby reducing influence of cross-talk interference that is exerted on the analog optical signal by the digital optical signal.

Abstract translation: 在对要发送给用户终端的数字信号的电信号实施加扰器之后，该电信号被转换为数字光信号，并且模拟光信号和该数字光信号通过波分复用复用，从而减少影响 由数字光信号施加在模拟光信号上的串扰干扰。

公开(公告)号：US5854702A

公开(公告)日：1998-12-29

申请号：US694343

申请日：1996-08-08

Applicant: Tomohisa Ishikawa ,  Katsuhiko Hakomori ,  Tatsuya Nishimura

Inventor： Tomohisa Ishikawa ,  Katsuhiko Hakomori ,  Tatsuya Nishimura

IPC: H04B10/40 ,  H01S5/068 ,  H04B10/079 ,  H04B10/272 ,  H04B10/50 ,  H04B10/564 ,  H04B10/60 ,  H04B10/67 ,  H04B10/69 ,  H04B10/00

CPC classification number: H04B10/40 ,  H04B10/0795

Abstract: An optical module includes a photodiode disposed in front of a laser diode with an offset from an optical axis of the laser diode, for monitoring the power of an optical beam emitted from the laser diode in a forward direction. The optical module further achieves switching between a transmission mode and a reception mode in response to a drive current supplied to the laser diode.

Abstract translation: 光学模块包括设置在激光二极管的前面，具有偏离激光二极管的光轴的光电二极管，用于监视从激光二极管向前发射的光束的功率。 光模块还响应于提供给激光二极管的驱动电流而实现在传输模式和接收模式之间的切换。