Optical transmitter and optical transmission system with switchable
chirp polarity
    3.
    发明授权
    Optical transmitter and optical transmission system with switchable chirp polarity 有权
    光发射机和光传输系统具有可切换的啁啾极性

    公开(公告)号:US6091535A

    公开(公告)日:2000-07-18

    申请号:US221156

    申请日:1998-12-28

    申请人: Hideaki Satoh

    发明人: Hideaki Satoh

    摘要: An optical transmitter has a Mach-Zehnder modulator, and a feedback loop that controls the bias voltage supplied to the modulator according to the insertion loss of the modulator, to compensate for DC drift in the attenuation characteristic of the modulator. The feedback loop can be switched to provide negative feedback on either the positive or negative slope of the attenuation characteristic. Switching the slope switches the polarity of the chirp generated by the modulator, enabling positive or negative chirp to be selected, whichever produces the least dispersion penalty. Since switching the slope also switches the polarity of the modulated signal, an optical transmission system using this optical transmitter has an additional circuit that selectively inverts the transmitted or received signal.

    摘要翻译: 光发射机具有马赫 - 曾德尔(Mach-Zehnder)调制器,以及反馈回路,根据调制器的插入损耗来控制提供给调制器的偏置电压,以补偿调制器的衰减特性中的直流漂移。 可以切换反馈回路以在衰减特性的正或负斜率上提供负反馈。 切换斜率可以切换由调制器产生的线性调频脉冲的极性,从而能够选择正或负啁啾,无论哪一种产生最小的色散损失。 由于切换斜率还切换了调制信号的极性,所以使用该光发射机的光传输系统具有选择性地反转发射或接收信号的附加电路。

    Horizontally oriented rotary machine having internal lubication oil pump
    4.
    发明授权
    Horizontally oriented rotary machine having internal lubication oil pump 失效
    卧式定向旋转机,内置油泵

    公开(公告)号:US5330335A

    公开(公告)日:1994-07-19

    申请号:US921322

    申请日:1992-07-29

    摘要: A rotary machine, such as a horizontally oriented scroll type refrigerant compressor is disclosed. The compressor includes a compressor housing, an inner block fixedly disposed within the compressor housing, a drive shaft extending substantially in the horizontal direction, and a driven mechanism, such as a compression mechanism operatively connected to one end of the drive shaft. The drive shaft is rotatably supported by the inner block and the compressor housing. A shielding element, such as an annular cylindrical member is fixedly held between the inner block and the compressor housing to prevent the drive shaft from passing through an oil sump of the housing. An internal lubrication oil pump is formed by the elements which are associated with the drive shaft, and is operated by virtue of the rotational motion of the drive shaft in order to supply the lubrication oil from the oil sump to the frictional surfaces of the internal component parts of the compressor. According to the construction and operational manner of the oil pump, the oil pump can be used for various types of horizontally oriented rotary machines. The drive shaft can also rotate without receiving oil viscous drag.

    摘要翻译: 公开了一种旋转机械,例如水平取向的涡旋式制冷压缩机。 压缩机包括压缩机壳体,固定地设置在压缩机壳体内的内部块,大致沿水平方向延伸的驱动轴以及可操作地连接到驱动轴的一端的压缩机构的从动机构。 驱动轴由内部块和压缩机壳体可旋转地支撑。 诸如环形圆柱形构件的屏蔽元件固定地保持在内部块和压缩机壳体之间,以防止驱动轴穿过壳体的油底壳。 内部润滑油泵由与驱动轴相关联的元件形成,并且由于驱动轴的旋转运动而操作,以便将润滑油从油底壳供应到内部部件的摩擦表面 部分压缩机。 根据油泵的结构和运行方式,油泵可用于各种水平定向旋转机。 驱动轴也可以旋转而不接受油粘性阻力。

    Optical transmitter and optical communication system using the same
    6.
    发明授权
    Optical transmitter and optical communication system using the same 失效
    光发射机和光通信系统使用相同

    公开(公告)号:US06583910B1

    公开(公告)日:2003-06-24

    申请号:US09280551

    申请日:1999-03-30

    申请人: Hideaki Satoh

    发明人: Hideaki Satoh

    IPC分类号: H04B1004

    摘要: An optical transmitter includes a light source emitting input light; and a modulator modulating the input light in accordance with an input electric signal to generate an optical transmission signal. The transmitter also includes a monitor which detects frequency fluctuation of the optical transmission signal. The modulator is controlled so as to optimize the amount of frequency fluctuation of the optical transmission signal.

    摘要翻译: 光发射机包括发射输入光的光源; 以及根据输入电信号调制输入光以产生光传输信号的调制器。 发射机还包括检测光传输信号的频率波动的监视器。 控制调制器以优化光传输信号的频率波动量。

    Adjustable-free optical signal receiver
    7.
    发明授权
    Adjustable-free optical signal receiver 失效
    可调光信号接收机

    公开(公告)号:US06342694B1

    公开(公告)日:2002-01-29

    申请号:US09276677

    申请日:1999-03-26

    申请人: Hideaki Satoh

    发明人: Hideaki Satoh

    IPC分类号: H01J4014

    CPC分类号: H04B10/6911 H03G3/3084

    摘要: An optical signal receiver producing an output signal from a received optical signal also generates two complementary signals from the output signal, integrates the two complementary signals, and takes the difference between the two integrated signals. The difference signal is used to control a bias current supplied to the input terminal of an amplifier that generates the output signal signal. Alternatively, the difference signal controls the gain of the amplifier. Output distortion is thereby corrected without requiring external adjustments.

    摘要翻译: 从接收的光信号产生输出信号的光信号接收器还从输出信号产生两个互补信号,对两个互补信号进行积分,并取两个积分信号之间的差值。 差分信号用于控制提供给产生输出信号信号的放大器的输入端的偏置电流。 或者,差分信号控制放大器的增益。 从而校正输出失真,而不需要外部调整。

    Driving circuit for an optical signal modulator
    8.
    发明授权
    Driving circuit for an optical signal modulator 失效
    用于光信号调制器的驱动电路

    公开(公告)号:US5805328A

    公开(公告)日:1998-09-08

    申请号:US669964

    申请日:1996-06-25

    IPC分类号: G02F1/01 G02F1/21 G02F1/03

    CPC分类号: G02F1/0123 G02F2001/212

    摘要: An LN (Lithium Niobate) modulator outputs light Po modulated using a modulation voltage Vm. An inputted light signal average level monitor is arranged at the input of the LN modulator. Further, an outputted light signal average level monitor is arranged at the output of the LN modulator. A negative feedback circuit controls the feeding back of a bias voltage applied to the modulator from the average level of the input signal and the average level of the output signal. Further, a bias voltage limiter performs control in such a manner that the center of the voltage limiting range for the bias voltage becomes the optimum operating point. This bias voltage limiter has: a voltage limiter for limiting the operating output range of an op-amp to be a prescribed voltage range; an integrator for applying an offset voltage to and shifting the limiting voltage of the voltage limiter; and a difference monitor for monitoring the difference between a modulation voltage Vm and an offset voltage .increment.V. The integrator generates an offset voltage based on shift information monitored by the difference monitor, with this offset voltage being provided to the voltage limiter. The voltage limiter then shifts the voltage control range in response to the provided offset voltage.

    摘要翻译: LN(铌酸锂)调制器输出使用调制电压Vm调制的光Po。 输入的光信号平均电平监视器被布置在LN调制器的输入端。 此外,输出的光信号平均电平监视器被布置在LN调制器的输出端。 负反馈电路控制从输入信号的平均电平和输出信号的平均电平反馈施加到调制器的偏置电压。 此外,偏置电压限制器以使得偏置电压的电压限制范围的中心成为最佳工作点的方式进行控制。 该偏压限制器具有用于将运算放大器的工作输出范围限制为规定电压范围的限压器; 积分器,用于向所述限压器施加偏移电压并使所述限制电压的极限电压移位; 以及用于监视调制电压Vm和偏移电压INCREMENT V之间的差的差分监视器。积分器基于由差分监视器监视的移位信息产生偏移电压,该偏移电压被提供给限压器。 然后,电压限制器响应于所提供的偏移电压而移动电压控制范围。

    Air conditioner for automotive vehicle
    10.
    发明授权
    Air conditioner for automotive vehicle 有权
    汽车空调

    公开(公告)号:US07266967B2

    公开(公告)日:2007-09-11

    申请号:US11049623

    申请日:2005-02-02

    IPC分类号: F25B27/00

    摘要: An air conditioner for an automotive vehicle having a water-cooling type internal combustion engine includes: a first refrigerator; and an adsorption type refrigerator having adsorbent. The first refrigerator controls temperature of air to be blown into a passenger compartment of the vehicle. The adsorbent generates adsorption heat when the adsorbent adsorbs the medium, and desorbs the adsorbed medium when the adsorbent is heated by coolant water in the internal combustion engine. The air to be blown into the passenger compartment is heated by the adsorption heat of the adsorbent, and is cooled by evaporation latent heat of the medium.

    摘要翻译: 一种具有水冷式内燃机的机动车用空调机,具备:第一冷藏库; 和具有吸附剂的吸附式制冷机。 第一冰箱控制要吹入车辆的乘客室的空气的温度。 当吸附剂吸附介质时,吸附剂产生吸附热,并且当吸附剂被内燃机中的冷却水加热时,吸附介质解吸。 吹入乘客室的空气被吸附剂的吸附热量加热,并通过介质的蒸发潜热来冷却。