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1. 发明申请

WO2002103938A2 METHOD AND APPARATUS FOR OPTICAL DATA SIGNALING USING DARK PHOTODIODE 审中-公开
标题翻译：光学数据信号的使用方法和装置
公开(公告)号：WO2002103938A2
公开(公告)日：2002-12-27
申请号：PCT/US2002/018723
申请日：2002-06-14
申请人： NURLOGIC DESIGN, INC.
发明人： HOANG, Chinh, L. , BRUNOLLI, Michael, J.
IPC分类号： H04B10/158
CPC分类号： H04B10/697 , H04B10/6933
摘要： An optical data signaling apparatus includes a trans-impedance amplifier for receiving a data signal current produced by a sensing photodiode in response to an optical data signal and an ambient current produced by a dark photodiode. Preferably, the dark photodiode has the same performance and manufacturing characteristics as the photodiode sensing the optical data signal, but is masked from receiving any light. The trans-impedance amplifier is configured to receive the ambient current from the dark photodiode as a first differential input and the data signal current from the sensing photodiode as a second differential input, the first differential input thus serving to cancel noise and environmental effects of the photodiodes, and allowing the amplifier to produce a stable and accurate differential voltage in response to the data signal current. An optical data signaling method includes receiving a data signal current produced by a sensing photodiode in response to an optical data signal, receiving an ambient current produced by a dark photodiode, using the ambient current as a differential reference for the data signal current, and producing a stable differential voltage in response to the data signal current by cancelling effects of noise and environmental factors represented by the ambient current.
摘要翻译：光数据信号装置包括用于响应于光数据信号和由暗光电二极管产生的环境电流接收由感测光电二极管产生的数据信号电流的跨阻放大器。优选地，暗光电二极管具有与感测光数据信号的光电二极管相同的性能和制造特性，但是被遮蔽以接收任何光。跨阻放大器被配置为从作为第一差分输入的暗光电二极管接收环境电流，并且将来自感测光电二极管的数据信号电流作为第二差分输入接收，因此第一差分输入用于消除噪声和环境影响光电二极管，并且允许放大器响应于数据信号电流产生稳定和精确的差分电压。光学数据信号传输方法包括响应于光学数据信号接收由感测光电二极管产生的数据信号电流，使用环境电流作为数据信号电流的差分参考，接收由暗光电二极管产生的环境电流，并产生通过消除由环境电流表示的噪声和环境因素的影响，响应于数据信号电流的稳定的差分电压。

2. 发明申请

WO02103906B1 LOW VOLTAGE DIFFERENTIAL SIGNALING CIRCUIT WITH MID-POINT BIAS 审中-公开
标题翻译：具有中点偏置的低压差分信号电路
公开(公告)号：WO02103906B1
公开(公告)日：2003-11-20
申请号：PCT/US0219029
申请日：2002-06-14
申请人： NURLOGIC DESIGN INC
发明人： BRUNOLLI MICHAEL J
IPC分类号： H04L25/02
CPC分类号： H04L25/0276 , H03F3/45179 , H03F2203/45008 , H04L25/0278 , H04L25/028
摘要： A low voltage differential signaling circuit employs a mid-point biasing scheme that maintains a desired common mode voltage across all logic states signaled by the circuit. In one driver implementation, separate conduction paths are used to signal respective logic states on a pair of differential signal liens. A common pair of resistors are provided in the conduction path between the two signal lines. The midpoint between the pair of resistors is tied to the desired common mode voltage. A midpoint bias circuit is coupled to a variable resistance in the conduction path so as to maintain the desired common mode voltage by virtue of a voltage division so as to minimize the amount of non-conduction path current at the mid point node. In one example, a replica circuit further provides an anticipated midpoint voltage to the midpoint bias circuit for comparison to the desired midpoint voltage. The midpoint bias circuit adjusts the variable resistance in accordance with the comparison.
摘要翻译：低电压差分信令电路采用中点偏置方案，该方案在由电路发送信号的所有逻辑状态之间保持期望的共模电压。在一个驱动器实现中，使用单独的传导路径来在一对差分信号余弦上用信号通知相应的逻辑状态。在两条信号线之间的传导路径中提供了一对公共的电阻。这对电阻之间的中点连接到所需的共模电压。中点偏置电路耦合到导电路径中的可变电阻，以通过分压维持期望的共模电压，从而最小化中点节点处的非导电路径电流的量。在一个示例中，复制电路还向中点偏置电路提供预期的中点电压，用于与期望的中点电压进行比较。中点偏置电路根据比较结果调整可变电阻。

3. 发明申请

WO2003079087A1 OPTICAL MODULE AND METHOD OF FABRICATING SAME 审中-公开
标题翻译：光学模块及其制造方法
公开(公告)号：WO2003079087A1
公开(公告)日：2003-09-25
申请号：PCT/US2002/019540
申请日：2002-06-20
申请人： NURLOGIC DESIGN, INC.
发明人： BRUNOLLI, Michael, J. , PILOTO, Andrew, J.
IPC分类号： G02B6/42
CPC分类号： G02B6/4238 , G02B6/4232 , G02B6/4249 , H01L2224/16145
摘要： An optical module (200) used in fiber optic networking, and a method for manufacturing such an optical module, incorporates optoelectronic devices (210), image guide technology including optical fibers (204), high speed electronics (208), and integrated electronic packaging. In one realization, both the opto-electronic devices and the high-speed electronic devices are assembled into the module. The base of the module consists of an image guide (202) which has optical fibers embedded into it. The opto-electronic devices are "flipchip-ed" onto the image guide within the module in such a manner as to eliminate the need for active alignment. The electronic devices are assembled into the optical module in close proximity with the optoelectronic devices in order to preserve wideband signal integrity. These devices are assembled with conventional flipchip and/or wirebond technology. Accordingly, the present invention eliminates the need for active alignment while simultaneously addressing the need for an optimal optical and electrical path. This in turn reduces the overall cost of the module assembly.
摘要翻译：光纤组合中使用的光学模块（200）和用于制造这种光学模块的方法包括光电器件（210），包括光纤（204），高速电子器件（208）和集成电子封装。在一个实现中，光电子器件和高速电子器件都被组装到模块中。该模块的基座由一个嵌入其中的光纤构成的图像引导件（202）组成。光电子器件以模块内的图像引导件“倒装芯片”，以消除对主动对准的需要。为了保持宽带信号的完整性，将电子设备组装到光学模块中，与光电子器件非常接近。这些器件采用传统的倒装芯片和/或引线接合技术进行组装。因此，本发明消除了对主动对准的需要，同时解决了对最佳光和电路径的需要。这又降低了模块组装的总体成本。

4. 发明申请

WO2002103938A3 METHOD AND APPARATUS FOR OPTICAL DATA SIGNALING USING DARK PHOTODIODE 审中-公开
公开(公告)号：WO2002103938A3
公开(公告)日：2002-12-27
申请号：PCT/US2002/018723
申请日：2002-06-14
申请人： NURLOGIC DESIGN, INC.
发明人： HOANG, Chinh, L. , BRUNOLLI, Michael, J.
IPC分类号： H04B10/158
摘要： An optical data signaling apparatus includes a trans-impedance amplifier for receiving a data signal current produced by a sensing photodiode in response to an optical data signal and an ambient current produced by a dark photodiode. Preferably, the dark photodiode has the same performance and manufacturing characteristics as the photodiode sensing the optical data signal, but is masked from receiving any light. The trans-impedance amplifier is configured to receive the ambient current from the dark photodiode as a first differential input and the data signal current from the sensing photodiode as a second differential input, the first differential input thus serving to cancel noise and environmental effects of the photodiodes, and allowing the amplifier to produce a stable and accurate differential voltage in response to the data signal current. An optical data signaling method includes receiving a data signal current produced by a sensing photodiode in response to an optical data signal, receiving an ambient current produced by a dark photodiode, using the ambient current as a differential reference for the data signal current, and producing a stable differential voltage in response to the data signal current by cancelling effects of noise and environmental factors represented by the ambient current.

5. 发明申请

WO2002103909A1 GAIN COMPENSATION AND BIAS CURRENT CONTROL IN AN LVDS CIRCUIT 审中-公开
标题翻译： LVDS电路中的增益补偿和偏置电流控制
公开(公告)号：WO2002103909A1
公开(公告)日：2002-12-27
申请号：PCT/US2002/018730
申请日：2002-06-14
申请人： NURLOGIC DESIGN, INC.
发明人： HOANG, Chinh, L.
IPC分类号： H03K19/185
CPC分类号： H03K19/018528 , H04L25/0276 , H04L25/0292
摘要： A low voltage differential signaling receiver includes a gain compensation and control circuit having a low common mode compensation circuit and a high common mode compensation circuit. A control circuit is coupled to both compensation circuits and senses the operation of one to control the operation of the other. The operation of the compensation circuits ensures that differential signals having a wide range of common mode input voltages are accurately detected by the receiver. The control circuit serves to keep the combined operation of the compensation circuits stable over the wide range of common mode input voltages.
摘要翻译：低压差分信号接收机包括具有低共模补偿电路和高共模补偿电路的增益补偿和控制电路。控制电路耦合到两个补偿电路，并且感测一个控制电路的操作以控制另一个的操作。补偿电路的动作确保接收机能准确地检测出具有宽范围的共模输入电压的差分信号。控制电路用于在宽范围的共模输入电压下保持补偿电路的组合操作稳定。

6. 发明申请

WO2002103906A3 LOW VOLTAGE DIFFERENTIAL SIGNALING CIRCUIT WITH MID-POINT BIAS 审中-公开
公开(公告)号：WO2002103906A3
公开(公告)日：2002-12-27
申请号：PCT/US2002/019029
申请日：2002-06-14
申请人： NURLOGIC DESIGN, INC.
发明人： BRUNOLLI, Michael, J.
IPC分类号： H04L25/02
摘要： A low voltage differential signaling circuit employs a mid-point biasing scheme that maintains a desired common mode voltage across all logic states signaled by the circuit. In one driver implementation, separate conduction paths are used to signal respective logic states on a pair of differential signal liens. A common pair of resistors are provided in the conduction path between the two signal lines. The midpoint between the pair of resistors is tied to the desired common mode voltage. A midpoint bias circuit is coupled to a variable resistance in the conduction path so as to maintain the desired common mode voltage by virtue of a voltage division so as to minimize the amount of non-conduction path current at the mid point node. In one example, a replica circuit further provides an anticipated midpoint voltage to the midpoint bias circuit for comparison to the desired midpoint voltage. The midpoint bias circuit adjusts the variable resistance in accordance with the comparison.

7. 发明申请

WO02103906A2 LOW VOLTAGE DIFFERENTIAL SIGNALING CIRCUIT WITH MID-POINT BIAS 审中-公开
标题翻译：具有中点偏置的低电压差分信号电路
公开(公告)号：WO02103906A2
公开(公告)日：2002-12-27
申请号：PCT/US0219029
申请日：2002-06-14
申请人： NURLOGIC DESIGN INC
发明人： BRUNOLLI MICHAEL J
IPC分类号： H04L25/02 , H03K19/00
CPC分类号： H04L25/0276 , H03F3/45179 , H03F2203/45008 , H04L25/0278 , H04L25/028
摘要： A low voltage differential signaling circuit employs a mid-point biasing scheme that maintains a desired common mode voltage across all logic states signaled by the circuit. In one driver implementation, separate conduction paths are used to signal respective logic states on a pair of differential signal liens. A common pair of resistors are provided in the conduction path between the two signal lines. The midpoint between the pair of resistors is tied to the desired common mode voltage. A midpoint bias circuit is coupled to a variable resistance in the conduction path so as to maintain the desired common mode voltage by virtue of a voltage division so as to minimize the amount of non-conduction path current at the mid point node. In one example, a replica circuit further provides an anticipated midpoint voltage to the midpoint bias circuit for comparison to the desired midpoint voltage. The midpoint bias circuit adjusts the variable resistance in accordance with the comparison.
摘要翻译：低电压差分信号电路采用中点偏置方案，其保持由电路发出信号的所有逻辑状态所需的共模电压。在一个驱动器实现中，使用单独的导通路径来在一对差分信号留置上对各自的逻辑状态进行信号。在两个信号线之间的传导路径中设置一对共同的电阻器。该对电阻之间的中点连接到所需的共模电压。中点偏置电路耦合到导通路径中的可变电阻，以便通过分压来保持所需的共模电压，以便最小化中点节点处的非导通路径电流的量。在一个示例中，复制电路进一步向中点偏置电路提供预期的中点电压，以与期望的中点电压进行比较。中点偏置电路根据比较调整可变电阻。

8. 发明申请

WO2002103898A1 METHOD AND APPARATUS FOR VOLTAGE CLAMPING IN FEEDBACK AMPLIFIERS USING RESISTORS 审中-公开
标题翻译：在使用电阻的反馈放大器中进行电压钳位的方法和装置
公开(公告)号：WO2002103898A1
公开(公告)日：2002-12-27
申请号：PCT/US2002/018756
申请日：2002-06-14
申请人： NURLOGIC DESIGN, INC.
发明人： HOANG, Chinh, L.
IPC分类号： H03F1/32
CPC分类号： H03F1/3211 , H03F3/45085 , H03F2203/45511 , H03F2203/45552 , H03F2203/45702
摘要： A data signaling aparatus includes a differential amplifier for providing an amplified differential output on a pair of outputs inresponse to a differential signal provided on a pair of inputs, and a clamping resistor between the pair of inputs. The clamping resistor acts to effectively reduce the swing in differential inputs, thereby allowing high gain that does not result in problematic differential outputs. Further, since the resistor is operative for all voltage ranges, it is useful in small signal applications where diodes cannot be used or are too difficult to implement. A data signaling method includes receiving a differential signal on a pair of inputs, reducing the magnitude of the differential signal by a scale factor using a clamping resistor across the pair of inputs, and providing an amplified differential output on a pair of outputs in response to the scaled differential signal provided on the pair of inputs.
摘要翻译：数据信号装置包括差分放大器，用于响应于一对输入上提供的差分信号而在一对输出上提供放大的差分输出，以及在该对输入之间的钳位电阻。钳位电阻用于有效降低差分输入中的摆幅，从而允许高增益，不会导致有差异的差分输出。此外，由于电阻器可用于所有电压范围，因此在二极管不能使用或难于实现的小信号应用中是有用的。数据信号传输方法包括：接收一对输入上的差分信号，使用钳位电阻在整对输入端之间减小差分信号的幅度，并在一对输出端提供放大的差分输出，以响应于在一对输入上提供的缩放的差分信号。

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