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1. 发明申请

WO2018228773A1 A WIDE DYNAMIC RANGE OPTICAL RECEIVER 审中-公开
公开(公告)号：WO2018228773A1
公开(公告)日：2018-12-20
申请号：PCT/EP2018/062919
申请日：2018-05-17
申请人： FIRECOMMS LIMITED
发明人： DONOVAN, Colm , LOUGHNAN, Dylan , CAHILL, Ciaran , MURPHY, Patrick , LAMBKIN, John D.
IPC分类号： H03F1/08 , H03F3/08 , H03G1/00 , H03G3/30
CPC分类号： H03F1/086 , H03F3/082 , H03F3/087 , H03F3/45475 , H03F2200/312 , H03F2200/393 , H03F2200/396 , H03F2200/417 , H03F2200/421 , H03F2200/471 , H03F2203/45524 , H03G3/3084
摘要： An optical receiver circuit (100) has a first photodiode (102) and a second diode (103) and an amplifier circuit (104-108) connected to the diodes. The photodiodes are arranged so that the second photodiode receives substantially the same optical signal as the first photodiode but reduced in magnitude. There is a TIA for each channel. The first photodiode is coupled to the input of a first TIA (104), and the second photodiode is connected to the input of a second TIA (105), and the receiver comprises an output (107) linked to the outputs of said TIAs. A switch (106) is connected by separate inputs to the TIAs, and a signal level detection circuit sends a control signal to the switch.

2. 发明申请

WO2011127343A2 AVALANCHE PHOTODIODE OPERATING VOLTAGE SELECTION ALGORITHM 审中-公开
标题翻译： AVALANCHE光电工作电压选择算法
公开(公告)号：WO2011127343A2
公开(公告)日：2011-10-13
申请号：PCT/US2011031679
申请日：2011-04-08
申请人： BAE SYS INF & ELECT SYS INTEG , JOHNSON AARON , SCHORR DAVID , STEENSON JR JAMES H
发明人： JOHNSON AARON , SCHORR DAVID , STEENSON JR JAMES H
IPC分类号： H01L31/00 , H01L31/107 , H01L31/18
CPC分类号： H01L31/107 , G01J1/44 , G01J2001/4466 , G01S7/4868 , H03G3/3084
摘要： An accurate and rapid method for characterizing the performance of an APD and setting its operating voltage Vop to an optimal value uses an on-board LED or other pulsed light source to measure APD responses at different operating voltages Vop. An estimated breakdown voltage Vb is determined by comparing the measured responses, and the Vop is adjusted to a new value at a fixed offset from the estimated Vb. The fixed offset is selected according to ambient light conditions, including the presence or absence of light background noise, and whether the sun is partially or fully in the field of view. The method is iterated until convergence, or until a maximum number of iterations is reached. In embodiments, a plurality of APD's having a common Vop can be adjusted, and the Vop is never set below a minimum value VopBW necessary to meet timing requirements for a missile guidance system.
摘要翻译：用于表征APD的性能并将其工作电压Vop设置为最佳值的准确和快速的方法使用板上LED或其他脉冲光源来测量在不同工作电压Vop下的APD响应。通过比较测量的响应来确定估计的击穿电压Vb，并且将Vop调整到与估计的Vb固定偏移的新值。根据环境光条件选择固定的偏移量，包括是否存在浅色背景噪声，以及太阳是否部分或全部在视野内。迭代该方法直到收敛，或直到达到最大次数。在实施例中，可以调整具有公共Vop的多个APD，并且Vop从不被设置为低于满足导弹引导系统的定时要求所必需的最小值VopBW。

3. 发明申请

WO2010129065A3 VARIABLE GAIN AMPLIFIER 审中-公开
标题翻译：可变增益放大器
公开(公告)号：WO2010129065A3
公开(公告)日：2011-03-03
申请号：PCT/US2010001363
申请日：2010-05-06
申请人： MINDSPEED TECH INC , SHIVARAM KRISHNA , AHMED KASHIF A
发明人： SHIVARAM KRISHNA , AHMED KASHIF A
IPC分类号： H03G3/10 , H03F3/68
CPC分类号： H03F3/08 , H03F1/083 , H03F1/22 , H03F3/45098 , H03F3/45475 , H03F2200/411 , H03F2200/453 , H03F2203/45522 , H03F2203/45528 , H03F2203/45618 , H03F2203/45702 , H03F2203/45728 , H03G3/3084
摘要： Various amplifier configurations having increased bandwidth, linearity, dynamic range, and less distortion are shown and disclosed. To increase bandwidth in a transimpedance amplifier, a replica circuit is created to replicate a degeneration resistance, or the resistance or value that relates to a feedback resistance. From the replica circuit, the replicated values are mirrored and processed to control a FET switch which modifies a degeneration resistance. The FET switch control signal is related to the feedback resistance and modifies the degeneration resistance to thereby maintain the product of the feedback resistance and the degeneration resistance as a constant. In another embodiment, a second switch controlled by an automatic gain control signal is established between a first stage amplifier and a second stage amplifier to improve dynamic range and bandwidth without degrading other amplifier specifications.
摘要翻译：显示和公开了具有增加的带宽，线性，动态范围和较小失真的各种放大器配置。为了增加跨阻放大器中的带宽，创建复制电路以复制退化电阻或与反馈电阻相关的电阻或值。从复制电路中，复制的值被镜像并被处理以控制修改退化电阻的FET开关。 FET开关控制信号与反馈电阻相关，并且改变退化电阻，从而将反馈电阻和退化电阻的乘积保持为常数。在另一个实施例中，在第一级放大器和第二级放大器之间建立由自动增益控制信号控制的第二开关，以改善动态范围和带宽，而不降低其他放大器规格。

4. 发明申请

WO2010139241A1 多通道功率控制电路和方法审中-公开
公开(公告)号：WO2010139241A1
公开(公告)日：2010-12-09
申请号：PCT/CN2010/073050
申请日：2010-05-21
申请人：中兴通讯股份有限公司 , 阮德金
发明人：阮德金
IPC分类号： H03G3/20 , H04J14/02 , H04B10/00
CPC分类号： H03G3/3084 , H04B10/291 , H04J14/0221

5. 发明申请

WO2010126950A2 LONG RANGE PROXIMITY AND/OR MOTION DETECTOR WITH AMBIENT LIGHT DETECTION CAPABILITIES 审中-公开
标题翻译：具有环境光检测能力的长距离接近和/或运动检测器
公开(公告)号：WO2010126950A2
公开(公告)日：2010-11-04
申请号：PCT/US2010/032685
申请日：2010-04-28
申请人： INTERSIL AMERICAS INC. , REES, Theodore, D.
发明人： REES, Theodore, D.
IPC分类号： G01B11/14 , G01B11/00 , G01S17/02
CPC分类号： H03F3/08 , G01J1/4204 , G01J1/44 , G01J1/46 , G01P13/00 , H03G3/3084 , H05B37/0218 , H05B37/0227 , Y02B20/44 , Y02B20/46
摘要： Provided herein are optical sensor systems that can be used for ambient light detection, proximity detection and motion detection, as well as to larger systems that include such an optical sensor system, and to related methods. In an embodiment, the optical sensor system includes a front end, an ambient light channel, a proximity channel and a motion channel. In an embodiment, offset and gain of the proximity channel is adjusted based on motion detected by the motion channel.
摘要翻译：本文提供了可用于环境光检测，接近检测和运动检测的光学传感器系统，以及包括这种光学传感器系统的较大系统以及相关方法。在一个实施例中，光学传感器系统包括前端，环境光通道，接近通道和运动通道。在一个实施例中，基于由运动通道检测到的运动来调整接近通道的偏移和增益。

6. 发明申请

WO2009123846A2 SYSTEM AND METHOD FOR IMPROVED INFRARED COMMUNICATION BETWEEN CONSUMER APPLIANCES 审中-公开
标题翻译：用于消费者设备之间改进的红外通信的系统和方法
公开(公告)号：WO2009123846A2
公开(公告)日：2009-10-08
申请号：PCT/US2009/037074
申请日：2009-03-13
申请人： UNIVERSAL ELECTRONICS INC. , GARNER, Scott , WILLIAMS, Graham , BROWN, William, L.
发明人： GARNER, Scott , WILLIAMS, Graham , BROWN, William, L.
IPC分类号： H04B10/10
CPC分类号： G08C23/04 , H03G1/02 , H03G3/3084 , H03G3/32 , H04N5/4403 , H04N21/42207 , H04N21/42221 , H04N21/42225 , H04N2005/4426
摘要： Optical or electrical attenuation is provided at the infrared (IR) receiver of a first device, such as a remote control, together with a commensurate increase in output of the IR transmitter of an appliance, such as a set top box, to improve the signal-to-noise ratio of IR communications with respect to any background infrared radiation, such as radiation from a plasma display screen.
摘要翻译：在诸如遥控器的第一设备的红外（IR）接收器处提供光学或电气衰减，以及诸如机顶盒的设备的IR发射器的输出的相应增加，以改善信号 IR通信相对于任何背景红外辐射的噪声比，例如来自等离子体显示屏的辐射。

7. 发明申请

WO2009061319A1 SIGNAL PROCESSING FOR LIGHT BEAM SENSING 审中-公开
标题翻译：光束感应信号处理
公开(公告)号：WO2009061319A1
公开(公告)日：2009-05-14
申请号：PCT/US2007/084071
申请日：2007-11-08
申请人： OPTOELECTRONICS CO., LTD. , OPTICON, INC. , NAKAMURA, Norio
发明人： NAKAMURA, Norio
IPC分类号： G06K7/10 , H03G3/32
CPC分类号： G06K7/10851 , H03G3/3084
摘要： In an optical code sensor of the type in which a signal derived from a light beam encoded with digital data is obtained by extracting transitions, an adjustable bandwidth filter is interposed before processing to extract the data. The distance of the optical code is detected, and the filter bandwidth is increased in relationship to the distance of the bar code. Preferably, the input signal to the filter is applied to a shift register and the output at each stage of the register is multiplied by a predetermined coefficient calculated to achieve a particular waveshape, preferably a Gaussian waveshape, via the entire set of coefficients. The register stage outputs, multiplied by the coefficients are then added together to produce a filtered output signal applied to the processor.
摘要翻译：在通过提取转移获得从由数字数据编码的光束导出的信号的类型的光学代码传感器中，在处理之前插入可调节带宽滤波器以提取数据。检测光学代码的距离，并且与条形码的距离相关联地增加滤波器带宽。优选地，将滤波器的输入信号施加到移位寄存器，并且将寄存器的每一级的输出乘以一个预定的系数，该预定系数被计算以经由整个系数集合来实现特定波形，最好是高斯波形。然后将寄存器级输出乘以系数加在一起以产生施加到处理器的滤波输出信号。

8. 发明申请

WO2008144649A1 LINEAR TRANSIMPEDANCE AMPLIFIER WITH MULTIPLEXED GAIN STAGE 审中-公开
标题翻译：具有多重增益级的线性放大放大器
公开(公告)号：WO2008144649A1
公开(公告)日：2008-11-27
申请号：PCT/US2008/064124
申请日：2008-05-19
申请人： FINISAR CORPORATION , DENOYER, Gilles, P.
发明人： DENOYER, Gilles, P.
IPC分类号： H03F3/08 , H03G3/20
CPC分类号： H03G3/3084 , H03F3/08 , H03G1/0017 , H03G1/0023 , H03G1/0082
摘要： A linear transimpedance amplifier includes a forward transimpedance circuit that receives an input signal from an optical device. The forward transimpedance circuit generates a linear output signal. The forward transimpedance circuit includes a first gain path and a second gain path, the first gain path configured to amplify the input signal when the first gain path is at a lower input impedance relative to the second gain path and the second gain path configured to amplify the input signal when the second gain path is at a lower input impedance relative to the first gain path. A feedback circuit includes a first circuit that detects a low frequency component of the output signal. The feedback circuit further includes a second circuit that is driven by the low frequency component of the output signal and is connected with the forward transimpedance circuit such that the second circuit uses an average optical device current to at least partially control when the input signal is amplified by the first gain path and when the input signal is amplified by the second gain path.
摘要翻译：线性跨阻抗放大器包括从光学装置接收输入信号的正向互阻抗电路。正向互阻电路产生线性输出信号。正向跨阻抗电路包括第一增益路径和第二增益路径，第一增益路径被配置为当第一增益路径相对于第二增益路径处于较低的输入阻抗时放大输入信号，而第二增益路径被配置为放大当第二增益路径相对于第一增益路径处于较低的输入阻抗时的输入信号。反馈电路包括检测输出信号的低频分量的第一电路。反馈电路还包括由输出信号的低频分量驱动的第二电路，并与正向跨阻抗电路连接，使得第二电路使用平均光器件电流至少部分地控制输入信号的放大时间通过第一增益路径和当输入信号被第二增益路径放大时。

9. 发明申请

WO2007100983A2 FIBER-TO-THE-HOME (FTTH) OPTICAL RECEIVER WITH DISTRIBUTED GAIN CONTROL 审中-公开
标题翻译：光纤到户（FTTH）光纤接收机，具有分布式增益控制
公开(公告)号：WO2007100983A2
公开(公告)日：2007-09-07
申请号：PCT/US2007062167
申请日：2007-02-15
申请人： SCIENTIFIC ATLANTA , RIGGSBY ROBERT R
发明人： RIGGSBY ROBERT R
IPC分类号： F16K3/24 , F16J9/20
CPC分类号： H04B10/6931 , H03G3/3084
摘要： A fiber-to-the-home (FTTH) system transmits forward and reverse optical signals, such as video, voice, and data signals, via optical fiber, and includes a plurality of home network units. The home network units include an optical receiver for receiving at least one of the video, voice, and data signals. Included is a plurality of gain stages that are distributed throughout the optical receiver. The gain stages include a preamplifier stage, two interstage amplifiers, and a postamplifier stage. Two gain control circuits automatically adjust the gain of the video signal based upon the input power level to the FTTH optical receiver. Additionally, a tilt network performs level compensation for externally located coaxial cable. A signal is then provided to a device located within a home via the coaxial cable at the proper RF level having low noise signals.
摘要翻译：光纤到户（FTTH）系统通过光纤传输诸如视频，语音和数据信号的正向和反向光信号，并且包括多个家庭网络单元。家庭网络单元包括用于接收视频，语音和数据信号中的至少一个的光接收器。包括分布在整个光接收器中的多个增益级。增益级包括前置放大器级，两级级放大器和后置放大级级。两个增益控制电路根据FTTH光接收机的输入功率电平自动调整视频信号的增益。此外，倾斜网络对外部定位的同轴电缆执行电平补偿。然后，信号经由具有低噪声信号的适当RF电平经由同轴电缆提供给位于家庭内的设备。

10. 发明申请

WO2005013480A1 前置増幅器の利得切り替え回路审中-公开
标题翻译：改变前置放大器的电路
公开(公告)号：WO2005013480A1
公开(公告)日：2005-02-10
申请号：PCT/JP2003/009682
申请日：2003-07-30
申请人：三菱電機株式会社 , 野上正道 , 野田雅樹 , 田上仁之 , 本島邦明
发明人：野上正道 , 野田雅樹 , 田上仁之 , 本島邦明
IPC分类号： H03G3/20
CPC分类号： H03G3/3084 , H03F3/08 , H03G1/0047 , H03G2201/103 , H03G2201/502 , H04B10/69
摘要：バースト状の光信号を電気信号に変換する受光素子（１）の出力電流を増幅し電圧信号を出力する前置増幅器（２）の帰還抵抗素子（２Ｂ）と並列に、第１の抵抗素子（６）と第１のスイッチング素子（９）による直列回路、および第２の抵抗素子（７）と第２のスイッチング素子（１０）による直列回路をそれぞれ接続し、前置増幅器（２）の変換利得を切り替える利得切り替え回路（３）は、第１の利得切り替え期間内に第１のスイッチング素子（９）を閉路操作するための操作信号を生成し、第２の利得切り替え期間内に第２のスイッチング素子（１０）を閉路操作するための操作信号を生成する。
摘要翻译：光检测器（1）将猝发形式的光信号转换为电信号并输出输出电流，并且具有反馈电阻元件（2B）的前置放大器（2）放大输出电流并输出电压信号。反馈电阻元件（2B），第一电阻元件（6）和第一开关元件（9）的串联电路以及第二电阻元件（7）和第二开关元件（10）的串联电路被连接与增益变化电路（3）并联，用于改变前置放大器（2）的转换增益。增益变化电路（3）在第一增益变化周期期间产生关闭第一开关元件9的操作信号，以及在第二增益变化周期期间关闭第二开关元件（10）的操作信号。

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