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1. 发明授权

US08901475B1 Avalanche photodiode biasing system including a current mirror, voltage-to-current converter circuit, and a feedback path sensing an avalanche photodiode voltage 有权
标题翻译：雪崩光电二极管偏置系统包括电流镜，电压 - 电流转换器电路和感测雪崩光电二极管电压的反馈路径
公开(公告)号：US08901475B1
公开(公告)日：2014-12-02
申请号：US13538850
申请日：2012-06-29
申请人： Daniel Joffe , Phillip Herron
发明人： Daniel Joffe , Phillip Herron
IPC分类号： H01J40/14 , H03F3/08
CPC分类号： H03F3/087
摘要： A system has a current mirror that has an input node and an output node and an avalanche photodiode (APD) coupled to the output node of the current mirror. The system also has a nonlinear voltage-to-current conversion element coupled to the input node of the current mirror that transmits current through the current mirror and the APD. Further, the system has a feedback path coupled between the output node of the current mirror and the voltage-to-current conversion element that senses a voltage across the APD and provides, based on the sensed voltage, an input signal to the voltage-to-current conversion element for controlling the element's output current, and the feedback path is arranged to limit a voltage of the input signal such that the output current is limited thereby preventing damage to the APD.
摘要翻译：系统具有电流镜，其具有耦合到电流镜的输出节点的输入节点和输出节点以及雪崩光电二极管（APD）。该系统还具有耦合到电流镜的输入节点的非线性电压 - 电流转换元件，其传输电流通过电流镜和APD。此外，系统具有耦合在电流镜的输出节点和感测APD之间的电压的电压 - 电流转换元件之间的反馈路径，并且基于感测的电压将输入信号提供给电压 - 电流转换元件，用于控制元件的输出电流，并且反馈路径被布置为限制输入信号的电压，使得输出电流受到限制，从而防止对APD的损坏。

2. 发明授权

US06542604B1 Scaled impedance replica for echo attenuation in digital transmission systems 有权
标题翻译：数字传输系统中用于回波衰减的缩放阻抗复制
公开(公告)号：US06542604B1
公开(公告)日：2003-04-01
申请号：US09144820
申请日：1998-08-31
申请人： Thomas Blon , Martin Gröpl , Michael Moyal , Daniel Joffe
发明人： Thomas Blon , Martin Gröpl , Michael Moyal , Daniel Joffe
IPC分类号： H04M100
CPC分类号： H04B3/23
摘要： A device for echo attenuation in a digital transmission system comprises an impedance replica of the transmission path. The impedance replica consists of a terminating resistance replica, a transformer replica, and a transmission line replica. The device may further comprise a bridged tap replica. The transformer replica and the bridged tap replica are provided as on-chip components. The main transformer inductance replica and all components of the bridged tap replica are variable and may be set by software control.
摘要翻译：在数字传输系统中用于回波衰减的装置包括传输路径的阻抗复制品。阻抗复制品由终端电阻副本，变压器副本和传输线副本组成。该装置还可以包括桥接抽头副本。变压器复制品和桥接抽头复制品作为片上组件提供。主变压器电感副本和桥接抽头副本的所有组件都是可变的，可以通过软件控制来设置。

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