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1. 发明申请

US20100207182A1 Implementing Variable Threshold Voltage Transistors 审中-公开
标题翻译：实现可变阈值电压晶体管
公开(公告)号：US20100207182A1
公开(公告)日：2010-08-19
申请号：US12370848
申请日：2009-02-13
申请人： Matthew James Paschal
发明人： Matthew James Paschal
IPC分类号： H01L29/78 , H01L21/336 , G06F9/45
CPC分类号： H01L27/092 , H01L21/823892
摘要： A circuit and method for implementing variable threshold voltage transistors in a complementary metal oxide semiconductor (CMOS) semiconductor chip, and a design structure on which the subject circuit resides are provided. Variable threshold voltage transistors are provided utilizing the NWELL and PWELL proximity effects of the CMOS semiconductor chip without any additional mask steps. A distance between an adjacent field effect transistor (FET) and an NWELL edge or PWELL edge is adjusted to selectively provide a needed threshold voltage for the FET.
摘要翻译：一种用于在互补金属氧化物半导体（CMOS）半导体芯片中实现可变阈值电压晶体管的电路和方法，以及设置有被摄体电路的设计结构。利用CMOS半导体芯片的NWELL和PWELL接近效应，无需任何附加的掩模步骤来提供可变阈值电压晶体管。相邻的场效应晶体管（FET）和NWELL边缘或PWELL边缘之间的距离被调整以选择性地为FET提供所需的阈值电压。

2. 发明授权

US06658030B1 Laser safety method and device for duplex open loop parallel optical link 失效
标题翻译：双工开环并联光链路的激光安全方法和装置
公开(公告)号：US06658030B1
公开(公告)日：2003-12-02
申请号：US09618221
申请日：2000-07-18
申请人： Steven John Baumgartner , Daniel Scott Hedin , Matthew James Paschal
发明人： Steven John Baumgartner , Daniel Scott Hedin , Matthew James Paschal
IPC分类号： H01S313
CPC分类号： H04B10/032 , H04J14/0221
摘要： A method and apparatus are provided to ensure that laser optical power does not exceed a “safe” level in an open loop parallel optical link in the event that a fiber optic ribbon cable is broken or otherwise severed. A duplex parallel optical link includes a transmitter and receiver pair and a fiber optic ribbon that includes a designated number of channels that cannot be split. The duplex transceiver includes a corresponding transmitter and receiver that are physically attached to each other and cannot be detached therefrom, so as to ensure safe, laser optical power in the event that the fiber optic ribbon cable is broken or severed. Safe optical power is ensured by redundant current and voltage safety checks.
摘要翻译：提供一种方法和装置，以确保在光纤带状电缆断裂或以其他方式切断的情况下，开环并联光链路中的激光光功率不超过“安全”水平。双工并行光链路包括发射机和接收机对以及包括指定数量的不能分裂的信道的光纤带。双工收发器包括物理上彼此连接并且不能从其分离的相应发射器和接收器，以便在光纤带状电缆断裂或断开的情况下确保安全的激光光功率。通过冗余电流和电压安全检查确保安全光功率。

3. 发明授权

US06532245B1 Vertical cavity surface emitting laser (VCSEL) driver with low duty cycle distortion and digital modulation adjustment 失效
标题翻译：具有低占空比失真和数字调制调整的垂直腔面发射激光器（VCSEL）驱动器
公开(公告)号：US06532245B1
公开(公告)日：2003-03-11
申请号：US09429280
申请日：1999-10-28
申请人： Matthew James Paschal , Steven John Baumgartner
发明人： Matthew James Paschal , Steven John Baumgartner
IPC分类号： H01S300
CPC分类号： H01S5/0427 , H01S5/183
摘要： A laser driver, e.g., a vertical cavity surface emitting laser (VCSEL) driver, with low duty cycle distortion is provided. An fT doubler circuit, used as the driver input, has two current sources, and reduces parasitic capacitance which can cause duty cycle distortion. The current sources may be analog or digital sources, the latter being digitally adjustable to provide for digital modulation adjustment. A current mirror circuit with a reference current source is provided for the two current sources.
摘要翻译：提供了具有低占空比失真的激光驱动器，例如垂直腔表面发射激光器（VCSEL）驱动器。用作驱动器输入的fT倍频电路具有两个电流源，并减少可能导致占空比失真的寄生电容。电流源可以是模拟或数字源，后者可数字调节以提供数字调制调整。为两个电流源提供了具有参考电流源的电流镜电路。

4. 发明授权

US06798990B2 Laser safety method for DC coupled parallel optical link 失效
标题翻译：直流耦合并联光链路的激光安全方法
公开(公告)号：US06798990B2
公开(公告)日：2004-09-28
申请号：US09779599
申请日：2001-02-09
申请人： London Terry Brown , Kevin Paul Demsky , Ladd William Freitag , Daniel Scott Hedin , Matthew James Paschal
发明人： London Terry Brown , Kevin Paul Demsky , Ladd William Freitag , Daniel Scott Hedin , Matthew James Paschal
IPC分类号： H04B1002
CPC分类号： H04B10/077 , H04B10/07955 , H04B10/40
摘要： A method and apparatus are provided to ensure that laser optical power does not exceed a “safe” level in a DC coupled open loop parallel optical link in the event that a fiber optic ribbon cable is broken or otherwise severed. A duplex parallel optical link includes a transmitter and receiver pair and a fiber optic ribbon that includes a designated number N of channels that cannot be split. The duplex transceiver includes a corresponding transmitter and receiver that are physically attached to each other and cannot be detached therefrom, so as to ensure safe, laser optical power in the event that the fiber optic ribbon cable is broken or severed. Safe optical power is ensured by redundant current and voltage safety checks, and the corresponding low duty cycle signal is generated by a safety pulse generator in the safety channel.
摘要翻译：提供了一种方法和装置，以确保在光纤带状电缆断裂或以其他方式切断的情况下，直流耦合的开环并联光链路中的激光光功率不超过“安全”级。双工并行光链路包括发射机和接收机对以及光纤带，其包括指定数量N个不能被分裂的信道。双工收发器包括物理上彼此连接并且不能从其分离的相应发射器和接收器，以便在光纤带状电缆断裂或断开的情况下确保安全的激光光功率。通过冗余电流和电压安全检查确保安全光功率，相应的低占空比信号由安全通道中的安全脉冲发生器产生。

5. 发明授权

US06265857B1 Constant current source circuit with variable temperature compensation 有权
标题翻译：具有可变温度补偿的恒流源电路
公开(公告)号：US06265857B1
公开(公告)日：2001-07-24
申请号：US09218340
申请日：1998-12-22
申请人： Kevin Paul Demsky , John Farley Ewen , Matthew James Paschal
发明人： Kevin Paul Demsky , John Farley Ewen , Matthew James Paschal
IPC分类号： G05F308
CPC分类号： G05F3/245 , Y10S323/907
摘要： The constant current source circuit provides current that compensates for changes in performance resulting from changes of temperature. The circuit mixes variable amounts of current having a negative temperature coefficient with current having a positive temperature coefficient. Analog and digital embodiments of the circuit are disclosed. In the analog embodiment, the amount of current having a positive temperature coefficient is added to an amount of current having a negative temperature coefficient as determined by the voltage difference between a variable control voltage input to transistors and a bandgap reference voltage. A transistor in each of two current selectors is connected to the variable control voltage, one of which is connected to ground and the other of which is output; and another transistor in each current selector is connected to the reference voltage, and again one transistor is grounded and the other is output whose current is mixed with the output from the transistor in the first current selector connected to the variable control voltage. A continuous range of temperature coefficients are realizable by varying the control voltage with respect to the bandgap reference voltage. The digital embodiment has a digital-to-analog converter connected to a bias voltage from the current having a positive temperature coefficient and a second digital-to-analog converter connected to a second bias voltage from the current having a negative temperature coefficient. A digital input signal to a corresponding switch determines if its respective transistor in each of the digital-to-analog converters conduct current. The two digital-to-analog converters may be configured in a common centroid arrangement of integrated complementary unit cells. The constant current source circuit can be used to drive off-chip parallel loads such as VCSELs.
摘要翻译：恒流源电路提供电流，补偿温度变化引起的性能变化。该电路将具有负温度系数的可变量的电流与具有正温度系数的电流混合。公开了电路的模拟和数字实施例。在模拟实施例中，具有正温度系数的电流量被加到由输入到晶体管的可变控制电压和带隙参考电压之间的电压差确定的具有负温度系数的电流量。两个电流选择器中的每一个中的晶体管连接到可变控制电压，其中一个连接到地，另一个连接到输出; 并且每个电流选择器中的另一个晶体管连接到参考电压，并且一个晶体管接地，另一个晶体管被输出，其电流与连接到可变控制电压的第一电流选择器中的晶体管的输出混合。可以通过相对于带隙参考电压改变控制电压来实现连续的温度系数范围。数字实施例具有数模转换器，其连接到具有正温度系数的电流的偏置电压和从具有负温度系数的电流连接到第二偏置电压的第二数模转换器。到相应开关的数字输入信号确定其每个数模转换器中的相应晶体管是否导通电流。两个数模转换器可以以集成的互补单元单元的公共质心布置来配置。恒流源电路可用于驱动片外并联负载，如VCSEL。

6. 发明授权

US06928242B1 Built in self test method and circuit for parallel optical transmitters 失效
标题翻译：内置自检方法和电路并联光发射机
公开(公告)号：US06928242B1
公开(公告)日：2005-08-09
申请号：US09689758
申请日：2000-10-13
申请人： Kevin Paul Demsky , Ladd William Freitag , Matthew James Paschal
发明人： Kevin Paul Demsky , Ladd William Freitag , Matthew James Paschal
IPC分类号： H04B10/08 , H04B10/155
CPC分类号： H04B10/07 , H04B10/50
摘要： An on-chip parallel data generator, including a Built In Self Test (BIST) generator, is integrated into a laser driver array of a parallel optical communication transmitter so that all optical outputs switch simultaneously. The BIST generator requires only one clock input which clocks the BIST generator for all channels. The optical outputs respond to either the on-chip BIST generator or the electrical inputs if a valid signal is present on the inputs.
摘要翻译：包括内置自测（BIST）发生器的片上并行数据发生器被集成到并行光通信发射器的激光驱动器阵列中，使得所有光输出同时切换。 BIST发生器只需要一个时钟输入，为所有通道的BIST发生器提供时钟。如果输入端存在有效信号，光输出将响应片内BIST发生器或电气输入。

7. 发明授权

US06462852B1 Selectable low-voltage differential signal/current mode logic (LVDS/CML) receiver with the option of AC or DC coupling 有权
标题翻译：可选择低电压差分信号/电流模式逻辑（LVDS / CML）接收器，可选择交流或直流耦合
公开(公告)号：US06462852B1
公开(公告)日：2002-10-08
申请号：US09429281
申请日：1999-10-28
申请人： Matthew James Paschal , Kevin Paul Demsky
发明人： Matthew James Paschal , Kevin Paul Demsky
IPC分类号： H04B1006
CPC分类号： H04L25/0294 , H03K19/01812 , H03K19/01837 , H04L25/0272 , H04L25/0296
摘要： A selectable receiver includes a first receiver module for receiving first input signal type and a second receiver module, different from the first receiver module, for receiving a second input signal type, both receiver modules coupled to the same receiver inputs. An internal common mode voltage for the first signal type or for the second signal type, is provided by respective common mode voltage networks, to the first or to the second receiver module, to facilitate AC coupling with the appropriate DC common mode voltage required by the signal type. If direct coupled, the internal common mode voltage is effectively swamped out by the common mode voltage of the input signal. The first receiver module or the second receiver module, and the associated first common mode voltage or second common mode voltage, are selected in the receiver based on a control signal. The first receiver module can be a current mode logic (CML) receiver, and the second receiver module can be a low-voltage differential (LVDS) receiver module, e.g., a self-timed interface (STI) receiver module.
摘要翻译：可选接收器包括用于接收第一输入信号类型的第一接收器模块和与第一接收器模块不同的第二接收器模块，用于接收第二输入信号类型，两个接收器模块耦合到相同的接收器输入端。用于第一信号类型或第二信号类型的内部共模电压由相应的共模电压网络提供给第一或第二接收器模块，以便于与所要求的适当DC共模电压的AC耦合信号类型。如果直接耦合，则内部共模电压由输入信号的共模电压有效地消除。基于控制信号在接收机中选择第一接收机模块或第二接收机模块以及相关联的第一共模电压或第二共模电压。第一接收器模块可以是电流模式逻辑（CML）接收器，并且第二接收器模块可以是低压差分（LVDS）接收器模块，例如自定时接口（STI）接收器模块。

8. 发明授权

US06181191B2 Dual current source circuit with temperature coefficients of equal and opposite magnitude 失效
标题翻译：双电流源电路具有相等和相反幅度的温度系数
公开(公告)号：US06181191B2
公开(公告)日：2001-01-30
申请号：US09388313
申请日：1999-09-01
申请人： Matthew James Paschal
发明人： Matthew James Paschal
IPC分类号： H03K522
CPC分类号： G05F3/245
摘要： A dual current source circuit provides dual currents of the same magnitude and having coefficients of temperature compensation that are also equal but opposite. The core of the circuit is a degenerated differential pair of bipolar junction transistors wherein the base of a first transistor of the pair is connected to a bandgap voltage reference. The base of the second transistor of the pair is connected to a PTAT current source having only one of a positive or a negative coefficient of temperature compensation and a resistor which generates a voltage difference between the bases of the two transistors. This voltage difference generates dual currents, each having equal but opposite coefficients of temperature compensation. A temperature independent stable tail current is provided to the transistors and can be generated by summing the current output of a negative PTAT current source and a positive PTAT current source.
摘要翻译：双电流源电路提供相同幅度的双电流并且具有也相等但相反的温度补偿系数。电路的核心是退化的双极结型差分对晶体管，其中该对的第一晶体管的基极连接到带隙电压基准。该对的第二晶体管的基极连接到仅具有正或负系数温度补偿中的一个的PTAT电流源和在两个晶体管的基极之间产生电压差的电阻器。该电压差产生双电流，每个电流具有相等但相反的温度补偿系数。温度独立的稳定尾电流被提供给晶体管，并且可以通过将负PTAT电流源和正PTAT电流源的电流输出求和来产生。

9. 发明授权

US6091750A Method and apparatus for providing hot plugging protection for laser optoelectronic devices 失效
标题翻译：为激光光电器件提供热封保护的方法和设备
公开(公告)号：US6091750A
公开(公告)日：2000-07-18
申请号：US47829
申请日：1998-03-25
申请人： Matthew James Paschal , David Warren Siljenberg
发明人： Matthew James Paschal , David Warren Siljenberg
IPC分类号： H01S5/068 , H01S3/00
CPC分类号： H01S5/06825
摘要： A method and apparatus for providing hot plugging protection for a laser optoelectronic device in a laser driver and fault detection circuit are provided. The power supply voltage is compared with a defined threshold potential utilizing a power on reset (POR) circuit. Responsive to detecting a power supply voltage potential below the defined threshold potential, an output control signal is generated. A current interrupt laser driver control signal is generated responsive to the output control signal to interrupt the laser driver current. A clear fault control signal is simultaneously generated responsive to the output control signal.
摘要翻译：提供了一种用于在激光驱动器和故障检测电路中为激光光电子器件提供热插拔保护的方法和装置。使用上电复位（POR）电路将电源电压与定义的阈值电位进行比较。响应于检测低于定义的阈值电位的电源电压电位，产生输出控制信号。产生响应于输出控制信号的中断激光驱动器控制信号以中断激光驱动器电流。响应于输出控制信号同时产生清除的故障控制信号。

10. 发明授权

US5789989A Delay interpolating voltage-controlled oscillator with linear transfer function 失效
标题翻译：延迟内插具有线性传递函数的压控振荡器
公开(公告)号：US5789989A
公开(公告)日：1998-08-04
申请号：US787666
申请日：1997-01-23
申请人： Matthew James Paschal , David Warren Siljenberg
发明人： Matthew James Paschal , David Warren Siljenberg
IPC分类号： H03K3/0231 , H03K3/354 , H03B27/00 , H03B1/00
CPC分类号： H03K3/354 , H03K3/0231
摘要： A delay interpolating voltage controlled oscillator (VCO) is provided. The delay interpolating VCO includes an input for receiving differential control input. A non-linear current steering circuit is coupled to the input for generating a non-linear delay responsive to the differential control input. A frequency signal is provided at a VCO output responsive to the differential control input and the non-linear delay with the frequency signal being linearly related to the differential control input.
摘要翻译：提供了一种延迟内插压控振荡器（VCO）。延迟内插VCO包括用于接收差分控制输入的输入。非线性电流导引电路耦合到输入端，用于响应差分控制输入产生非线性延迟。响应于差分控制输入和频率信号与差分控制输入线性相关的非线性延迟，在VCO输出处提供频率信号。

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