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    • 3. 发明授权
    • Optical transmission device
    • 光传输装置
    • US08385750B2
    • 2013-02-26
    • US12464174
    • 2009-05-12
    • Tetsuhiro FukaoHarufusa KondoKenichi Uto
    • Tetsuhiro FukaoHarufusa KondoKenichi Uto
    • H04B10/04
    • H04B10/572
    • An optical transceiver includes an optical transmitter. The optical transmitter varies the wavelength of its output beam in accordance with the setting of a digital to analog converter. Two split beams emerging respectively from beam splitters are introduced into a photodetector and a wavelength filter, respectively. A quotient is calculated by dividing the digital value output from an analog to digital converter (ADC) by the digital value output from another ADC. A memory address m is then determined based on this quotient without making any calculation for compensating for the imperfect characteristics of the wavelength filter. A wavelength notification value is then selected from a wavelength notification table based on the determined memory address m, and sent to the system host.
    • 光收发器包括光发射机。 光发射机根据数模转换器的设置来改变其输出光束的波长。 分别从分束器出射的两个分离光束分别被引入到光电检测器和波长滤波器中。 通过将来自模数转换器(ADC)的数字值输出除以另一ADC的数字值输出来计算商。 然后基于该商确定存储器地址m,而不进行用于补偿波长滤波器的不完美特性的任何计算。 然后根据确定的存储器地址m从波长通知表中选择波长通知值,并发送给系统主机。
    • 4. 发明申请
    • LIGHT RECEIVER
    • 光接收器
    • US20080152358A1
    • 2008-06-26
    • US11865831
    • 2007-10-02
    • Kenichi Uto
    • Kenichi Uto
    • H04B10/06H04B10/158
    • H04B10/695
    • A light receiver has a photoelectric conversion circuit which converts an input optical signal into an electrical signal, an electric amplifier which amplifies the electrical signal output from the photoelectric conversion circuit, a threshold adjustment circuit which outputs a threshold value according to signal information in the optical signal, and an optical signal loss detection circuit which compares amplitude of the electric signal output from the electric amplifier with the threshold value output from the threshold adjustment circuit and outputs results of the comparison.
    • 光接收器具有将输入光信号转换为电信号的光电转换电路,放大从光电转换电路输出的电信号的电放大器,根据光电转换电路中的信号信息输出阈值的阈值调整电路 信号,以及光信号损失检测电路,其将从电动放大器输出的电信号的幅度与从阈值调整电路输出的阈值进行比较,并输出比较结果。
    • 5. 发明申请
    • OPTICAL TRANSMISSION DEVICE
    • 光传输设备
    • US20100150578A1
    • 2010-06-17
    • US12464174
    • 2009-05-12
    • Tetsuhiro FukaoHarufusa KondoKenichi Uto
    • Tetsuhiro FukaoHarufusa KondoKenichi Uto
    • H04B10/04
    • H04B10/572
    • An optical transceiver includes an optical transmitter. The optical transmitter varies the wavelength of its output beam in accordance with the setting of a digital to analog converter. Two split beams emerging respectively from beam splitters are introduced into a photodetector and a wavelength filter, respectively. A quotient is calculated by dividing the digital value output from an analog to digital converter (ADC) by the digital value output from another ADC. A memory address m is then determined based on this quotient without making any calculation for compensating for the imperfect characteristics of the wavelength filter. A wavelength notification value is then selected from a wavelength notification table based on the determined memory address m, and sent to the system host.
    • 光收发器包括光发射机。 光发射机根据数模转换器的设置来改变其输出光束的波长。 分别从分束器出射的两个分离光束分别被引入到光电检测器和波长滤波器中。 通过将来自模数转换器(ADC)的数字值输出除以另一ADC的数字值输出来计算商。 然后基于该商确定存储器地址m,而不进行用于补偿波长滤波器的不完美特性的任何计算。 然后根据确定的存储器地址m从波长通知表中选择波长通知值,并发送给系统主机。
    • 6. 发明申请
    • OPTICAL RECEIVER
    • 光接收机
    • US20100014875A1
    • 2010-01-21
    • US12356817
    • 2009-01-21
    • Kenichi Uto
    • Kenichi Uto
    • H04B10/06
    • H04B10/6911
    • An optical detector includes a photoelectric conversion circuit converting an optical input signal into an electrical signal, an AC-to-DC signal conversion circuit converting the electrical signal to a DC signal, a high voltage generating circuit supplying a voltage to the photoelectric conversion circuit, and a current sink circuit drawing a current from the high voltage generating circuit. The current drawn into the current sink circuit from the high voltage generating circuit increases as an output signal of the AC-to-DC signal conversion circuit decreases.
    • 光检测器包括将光输入信号转换为电信号的光电转换电路,将电信号转换为DC信号的AC至DC信号转换电路,向光电转换电路提供电压的高压产生电路, 以及从高压发生电路画出电流的电流吸收电路。 随着AC-DC信号转换电路的输出信号减小,从高压发生电路吸入电流吸收电路的电流增加。