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1. 发明授权

US4701646A Direct coupled FET logic using a photodiode for biasing or level-shifting 失效
标题翻译：直接耦合FET逻辑，使用光电二极管进行偏置或电平转换
公开(公告)号：US4701646A
公开(公告)日：1987-10-20
申请号：US931791
申请日：1986-11-18
申请人： Bruce A. Richardson
发明人： Bruce A. Richardson
IPC分类号： H03K19/0952 , H03K17/13 , H03K17/687 , H03K17/78
CPC分类号： H03K19/0952 , Y10S136/293
摘要： A direct coupled FET logic (DCFL) circuit element has an active FET with source connected to a low reference voltage and drain connected through a pull-up FET to a higher reference voltage. An input is applied to the gate of the active FET and the output is taken from its drain, the pull-up FET having its gate connected to its source. In depletion mode configuration, a photodiode is connected to the gate of the active FET, the photodiode energizable to downwardly shift the gate voltage. In enhancement mode configuration, a photodiode is connected between source and gate of the pull-up transistor and is energized to shift the gate voltage upwardly. The photodiodes are integrated with the active and pull-up FETs and are energized by light or decay radiation.
摘要翻译：直流耦合FET逻辑（DCFL）电路元件具有有源FET，其源极连接到通过上拉FET连接到较高参考电压的低参考电压和漏极。输入被施加到有源FET的栅极，并且从其漏极取出输出端，上拉FET的栅极连接到其源极。在耗尽模式配置中，光电二极管连接到有源FET的栅极，光电二极管可通电以使栅极电压向下移位。在增强模式配置中，光电二极管连接在上拉晶体管的源极和栅极之间并通电以向上移动栅极电压。光电二极管与有源和上拉FET集成，并由光或衰变辐射激励。

2. 发明授权

US5570990A Human guided mobile loader stocker 失效
标题翻译：人造导轨移动式装载机
公开(公告)号：US5570990A
公开(公告)日：1996-11-05
申请号：US147372
申请日：1993-11-05
申请人： Anthony C. Bonora , Bruce A. Richardson , Michael D. Brain , Edward J. Cortez , Barney H. Huang
发明人： Anthony C. Bonora , Bruce A. Richardson , Michael D. Brain , Edward J. Cortez , Barney H. Huang
IPC分类号： G03F7/20 , H01L21/677 , G06F15/50
CPC分类号： G03F7/70541 , G03F7/70741 , G03F7/7075 , H01L21/67775 , Y10S414/14
摘要： A human guided mobile loader stocker developed to mechanically assist in SMIF container movement. The assist includes a pushcart, a semi-motorized transport arm, a processor, and communication devices. A group of containers are placed on the cart using the arm. The cart is pushed to a semiconductor processing tool where the arm is used to transfer containers to and from the port of the processing tool. The processor and communication devices are used for inventory control and guiding the container to the port of the processing tool.
摘要翻译：开发了用于机械协助SMIF集装箱运动的人造导向移动式装载机储料器。辅助包括一个手推车，一个半电动运输臂，一个处理器和通讯装置。使用手臂将一组容器放在购物车上。推车被推到半导体处理工具，其中臂用于将容器运送到加工工具的端口和从处理工具的端口传送。处理器和通信设备用于库存控制，并将容器引导到处理工具的端口。

3. 发明授权

US5363457A Optical phase-modulating devices and methods for their operation 失效
标题翻译：光相位调制装置及其操作方法
公开(公告)号：US5363457A
公开(公告)日：1994-11-08
申请号：US91708
申请日：1993-07-15
申请人： Christopher E. Falt , Bruce A. Richardson , Claude Rolland
发明人： Christopher E. Falt , Bruce A. Richardson , Claude Rolland
IPC分类号： G02F1/015 , G02F1/025 , G02F1/21 , G02B26/06
CPC分类号： G02F1/025 , G02F2001/0151 , G02F2001/212 , G02F2201/12
摘要： A semiconductor-based optical phase-modulating device has first and second pairs of phase-fixing electrodes bracketing a pair of phase-modulating electrodes. The phase-fixing electrodes fix electric fields across end regions of the phase-modulating device to reduce distributed resistance and capacitance of the phase-modulating device, thereby improving the frequency response of the phase-modulating device. The optical phase-modulating device is particularly applicable to use in integrated optic Mach-Zehnder interferometers used for optical signal modulation.
摘要翻译：一种基于半导体的光学相位调制装置具有包围一对相位调制电极的第一和第二对相位固定电极。相位固定电极固定相位调制装置的端部区域的电场，以减小相位调制装置的分布电阻和电容，从而提高相位调制装置的频率响应。光学相位调制装置特别适用于用于光信号调制的集成光学马赫 - 曾德干涉仪。

4. 发明授权

US4872173A Method and apparatus for stabilizing the spectral characteristics of a semiconductor laser diode 失效
标题翻译：用于稳定半导体激光二极管的光谱特性的方法和装置
公开(公告)号：US4872173A
公开(公告)日：1989-10-03
申请号：US239880
申请日：1988-09-02
申请人： Bruce A. Richardson
发明人： Bruce A. Richardson
IPC分类号： H01S3/137 , H01S3/139 , H01S5/065 , H01S5/068 , H01S5/14
CPC分类号： H01S3/137 , H01S3/139 , H01S5/065 , H01S5/06808 , H01S5/14
摘要： In a method and apparatus for stabilizing the emission spectrum of a semiconductor laser diode, an external optical cavity is coupled to the laser diode to couple light from an active region of the laser diode to the external cavity and from the external cavity to the active region of the laser diode. The phase of light coupled from the external cavity to the active region of the laser diode is dithered about a phase operating point at a dither frequency. A component of the forward voltage across the laser at the dither frequency is sensed and a feedback signal indicative of the amplitude of said component of the forward voltage and the phase of said component of the forward voltage relative to the phase of the dither is generated. The phase operating point is changed in response to the feedback signal to minimize the amplitude of said component of the forward voltage. The method and apparatus are useful for stabilization of laser diodes used in high performance optical communications systems.
摘要翻译：在用于稳定半导体激光二极管的发射光谱的方法和装置中，外部光学腔耦合到激光二极管以将来自激光二极管的有源区的光耦合到外部空腔并从外部腔耦合到有源区的激光二极管。从外部腔耦合到激光二极管的有源区的相位在抖动频率下围绕相位操作点抖动。感测激光频率处的正向电压的分量，并产生指示正向电压的所述分量的振幅和正向电压的所述分量相对于抖动的相位的反馈信号。响应于反馈信号改变相位操作点，以使正向电压的所述分量的振幅最小化。该方法和装置对于稳定用于高性能光通信系统的激光二极管是有用的。

5. 发明授权

US5345459A Method of reducing the thermally-induced shift in the emission wavelength of laser diodes 失效
标题翻译：减少激光二极管发射波长的热诱导位移的方法
公开(公告)号：US5345459A
公开(公告)日：1994-09-06
申请号：US118273
申请日：1993-09-09
申请人： Bruce A. Richardson , Douglas J. S. Beckett , Jozef Finak , Robert A. Bruce , David M. Adams
发明人： Bruce A. Richardson , Douglas J. S. Beckett , Jozef Finak , Robert A. Bruce , David M. Adams
IPC分类号： H01S5/026 , H01S5/042 , H01S5/068 , H01S3/04
CPC分类号： H01S5/068 , H01S5/0261 , H01S5/0425
摘要： A method of reducing thermally-induced emission wavelength shift in laser diodes. In addition to the conventional ridge contact for supplying the modulation current to the laser diode a second ridge contact is formed on the device. A compensation current of substantially the same frequency as the modulation current but having an opposite phase is applied to the second contact. This compensation current is selected to substantially neutralize the transient temperature variations due to changes in the modulation signal and result in a generally steady state thermal situation.
摘要翻译：减少激光二极管中的热诱导发射波长偏移的方法。除了用于向激光二极管提供调制电流的常规脊接触之外，在器件上形成第二脊接触。具有与调制电流基本相同的频率但具有相反相位的补偿电流被施加到第二接点。该补偿电流被选择为基本上中和由于调制信号的变化引起的瞬态温度变化，并且导致大致稳定的状态热情况。

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