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公开(公告)号：US5703506A
公开(公告)日：1997-12-30
申请号：US578726
申请日：1995-12-26
IPC分类号： H04B10/158 , H04L25/06 , H04Q9/00 , G08G1/01
CPC分类号： H04B10/697 , H04L25/062
摘要： A signal processing circuit (10) performs a sample and hold (16) of an input signal (14) and stores a maximum value of the input signal (18). A guardband signal (21) is developed that is less than the maximum value that is stored. The input signal is compared to the guardband signal to determine if the input signal is above or below the guardband signal. A threshold signal (25) is developed by taking a percentage of the maximum value that is stored. The input signal is compared to the threshold signal to regenerate the input waveform. If the input signal is below the guardband signal and above the threshold signal, the sample and hold circuit is reset to acquire a new maximum value of the input signal so that a new threshold can be used for regenerating the input signal.
摘要翻译： 信号处理电路（10）执行输入信号（14）的采样和保持（16）并存储输入信号（18）的最大值。 开发出小于存储的最大值的保护带信号（21）。 将输入信号与保护频带信号进行比较，以确定输入信号是否高于或低于保护频带信号。 通过获取存储的最大值的百分比来开发阈值信号（25）。 将输入信号与阈值信号进行比较，以重新生成输入波形。 如果输入信号低于保护带信号并且高于阈值信号，则采样和保持电路被复位以获取输入信号的新的最大值，使得可以使用新的阈值来再生输入信号。
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2.发明授权Circuit and method of encoding and decoding digital data transmitted along optical fibers 失效对沿光纤传输的数字数据进行编码和解码的电路和方法
公开(公告)号：US5673130A
公开(公告)日：1997-09-30
申请号：US582841
申请日：1996-01-02
CPC分类号： H04B10/516 , H04L25/062 , H04L7/0008 , H04L7/0075
摘要： A data transmitter (12) transmits parallel data as light pulses over multiple optical channels (14). A data receiver (16) converts the light pulses back to a voltage level and compares the voltage level to a reference capacitor voltage (42). The capacitor voltage should maintain a mid-range value for proper noise margin in detecting logic ones and logic zeroes. Any long series of consecutive logic ones or zeroes causes the capacitor voltage to charge or discharge toward the same level as the data voltage, which causes data errors. To prevent the data errors, the data is encoded (18) by inverting certain bits to break up the long series of consecutive logic states. The encoding information is transmitted as a transmitted clock to the data receiver over another fiber optic channel. The decoding information is retrieved (20) so that the encoded data can be converted back to proper logic states.
摘要翻译： 数据发送器（12）将并行数据作为光脉冲发送在多个光通道（14）上。 数据接收器（16）将光脉冲转换回电压电平，并将电压电平与参考电容器电压（42）进行比较。 在检测逻辑和逻辑零时，电容电压应保持适当的噪声容限的中档值。 任何长串连续的逻辑或零都会使电容器电压与数据电压相同的电平进行充放电，从而导致数据错误。 为了防止数据错误，通过反转某些位来对数据进行编码（18）以分解长序列的连续逻辑状态。 编码信息作为发送时钟通过另一个光纤信道被发送到数据接收器。 检索解码信息（20），使得编码数据可被转换回适当的逻辑状态。
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公开(公告)号：US6091531A
公开(公告)日：2000-07-18
申请号：US15897
申请日：1998-01-30
CPC分类号： H04B10/695 , H04B10/6932
摘要： A differential charge and dump optoelectronic receiver for baseband digital optoelectronic data links is disclosed having a preamplifier and a voltage controlled current source that defines the tail current of a differential pair functioning as a two quadrant multiplier, and using capacitors as loads on the differential pair making said differential pair an integrator. The integrator provides a full differential output, part of which is fedback to control the gain of the preamplifier. In a preferred embodiment, one integrator pair is used to recover the data from a Manchester encoded data stream. In another preferred embodiment, two pairs of integrators are used for QPSK like codes.
摘要翻译： 公开了一种用于基带数字光电数据链路的差分充电和转储光电接收器，其具有前置放大器和电压控制电流源，其限定用作二象限乘法器的差分对的尾电流，并且使用电容器作为差分对上的负载 所述差分对是积分器。 积分器提供全差分输出，其中一部分反馈控制前置放大器的增益。 在优选实施例中，使用一个积分器对来从曼彻斯特编码数据流中恢复数据。 在另一个优选实施例中，两对积分器被用于QPSK相似代码。
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公开(公告)号：US5703504A
公开(公告)日：1997-12-30
申请号：US578727
申请日：1995-12-26
CPC分类号： H03F3/08 , H03F3/3432 , H03F3/45982 , H03G3/345
摘要： A signal processing circuit (10) generates a bias signal (27) that is used for biasing a comparator (26). An input signal (14) is compared to the bias signal (27) in order to reconstruct the input signal (14) on an output of the comparator. The bias signal (27) is generated by selecting the larger of a percent of the input signal (23) or an offset signal (24) that is larger than a minimum value of the input signal.
摘要翻译： 信号处理电路（10）产生用于偏置比较器（26）的偏置信号（27）。 将输入信号（14）与偏置信号（27）进行比较，以便重建比较器的输出端上的输入信号（14）。 偏置信号（27）通过选择输入信号（23）的百分比中的较大者或大于输入信号的最小值的偏移信号（24）来产生。
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公开(公告)号：US6023254A
公开(公告)日：2000-02-08
申请号：US798203
申请日：1997-02-10
申请人： Earnest J. Johnson , Christopher K. Y. Chun , Barbara M. Foley , Daniel B. Schwartz , Douglas P. Fayden , Cary D. Perttunen
发明人： Earnest J. Johnson , Christopher K. Y. Chun , Barbara M. Foley , Daniel B. Schwartz , Douglas P. Fayden , Cary D. Perttunen
CPC分类号： G06F1/1639 , G06F1/1616 , G06F1/1677 , H04N9/3141 , Y10S345/905
摘要： A projection system for a computer has an electronic slide (94) that is coupled to an electronic image signal (84) from a processor (82) in the computer (50). Projection optics (102) focus an optical image from the electronic slide (94) onto a screen (58).
摘要翻译： 用于计算机的投影系统具有从计算机（50）中的处理器（82）耦合到电子图像信号（84）的电子幻灯片（94）。 投影光学器件（102）将来自电子幻灯片（94）的光学图像聚焦到屏幕（58）上。
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公开(公告)号：US5889602A
公开(公告)日：1999-03-30
申请号：US763192
申请日：1996-12-10
申请人： Earnest J. Johnson , Christopher K. Y. Chun , Barbara McNeill Foley , Cary D. Perttunen , Daniel B. Schwartz , George Edward Charles
发明人： Earnest J. Johnson , Christopher K. Y. Chun , Barbara McNeill Foley , Cary D. Perttunen , Daniel B. Schwartz , George Edward Charles
CPC分类号： G06F1/1616 , G06F1/1681 , G06F1/1683 , H04B10/801
摘要： An optical hinge (20) provides one or more free space optical communication links through the hinge (17) of an instrument (10). The optical links include a transmitter (24) in one section (14) of the instrument (10) and a receiver (34) in the other section (16) of the instrument (10). An optical coupler (27) connects the transmitter (24) to the receiver (34) through a hinge (17).
摘要翻译： 光学铰链（20）提供通过仪器（10）的铰链（17）的一个或多个自由空间光通信链路。 光学链路包括仪器（10）的一个部分（14）中的发射器（24）和仪器（10）的另一部分（16）中的接收器（34）。 光耦合器（27）通过铰链（17）将发射器（24）连接到接收器（34）。
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公开(公告)号：US5864642A
公开(公告)日：1999-01-26
申请号：US797441
申请日：1997-02-10
申请人： Christopher K. Y. Chun , Daniel B. Schwartz , Melissa Denvir , George Edward Charles , Dale Brian Halling
发明人： Christopher K. Y. Chun , Daniel B. Schwartz , Melissa Denvir , George Edward Charles , Dale Brian Halling
CPC分类号： G02B6/43 , H05K1/0274
摘要： A flexible electro-optic circuit board (20) includes a polymer circuit board (22) and a polymer optical backplane (34). The polymer circuit board (22) includes a plurality of circuit elements (50, 52). The polymer optical backplane (34) has a plurality of optical transmission lines (44). A plurality of optical vias (30) couple the polymer circuit board (22) to the polymer optical backplane (34).
摘要翻译： 柔性电光电路板（20）包括聚合物电路板（22）和聚合物光背板（34）。 聚合物电路板（22）包括多个电路元件（50,52）。 聚合物光背板（34）具有多个光传输线（44）。 多个光学通孔（30）将聚合物电路板（22）耦合到聚合物光学背板（34）。
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公开(公告)号：US07164301B2
公开(公告)日：2007-01-16
申请号：US11125462
申请日：2005-05-10
CPC分类号： H03K3/356008 , H03K3/012
摘要： A method of power gating a latch including detecting a state of the latch, detecting a power gate signal, providing power to the latch while the power gate signal is negated, and removing power from the latch when the power gate signal is asserted and the latch is in a predetermined state. The method may include any one or more of pulling a node of the latch to a selected state while the power gate signal is asserted to ensure that the latch powers up in the predetermined state, providing a signal indicative of the latch state and the power gate signal to respective inputs of a logic gate having an output indicative thereof, switching a supply voltage to a power input of the latch based on a state of the output of the logic gate, and closing a switch to pull a node of the latch low.
摘要翻译： 一种锁存电源的方法，包括检测锁存器的状态，检测功率门信号，在功率门信号被否定时为锁存器供电，以及当功率门信号被断言时从锁存器去除功率，并且锁存器 处于预定状态。 该方法可以包括以下任何一个或多个：将锁存器的节点拉至选定状态，同时确定电源门信号以确保锁存器在预定状态下上电，提供指示锁存状态的信号和电源门 信号到具有指示输出的逻辑门的相应输入，基于逻辑门的输出状态将电源电压切换到锁存器的电源输入，并且闭合开关以将锁存器的节点拉低。
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公开(公告)号：US06954100B2
公开(公告)日：2005-10-11
申请号：US10660847
申请日：2003-09-12
CPC分类号： H03K3/356113
摘要： A level shifter for an integrated circuit. In one embodiment, the level shifter is a bi-directional level shifter with a signal terminal located in each voltage domain that can be utilized as input or output terminal. In some embodiments, the level shifter includes transistors for cutting off the flow of current between domain power supplies when the input terminals are at a particular state. In one embodiment, only one signal line of the level shifter crosses a domain boundary.
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公开(公告)号：US5959315A
公开(公告)日：1999-09-28
申请号：US844027
申请日：1992-03-02
CPC分类号： G02B6/4239 , G02B6/4202 , G02B6/4249
摘要： One surface of a semiconductor component attached to one surface of a header with an opposite surface of the component having an optical input/output positioned adjacent one end of an optical fiber. The component and optical fiber are fixedly attached with no strain by a curable gel with the header acting as a heat sink. Electrical contacts are made to the component by means of leads formed on the header and/or a conductive coating deposited on the optical fiber.
摘要翻译： 半导体部件的一个表面附接到集管的一个表面，其中部件的相对表面具有邻近光纤的一端定位的光学输入/输出。 组件和光纤通过可固化凝胶固定地附着，其中头部用作散热器。 通过形成在集管上的引线和/或沉积在光纤上的导电涂层，对部件进行电接触。
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