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11. 发明申请

US20080095356A1 Subscriber line interface circuit with discrete component linefeed driver 审中-公开
标题翻译：用户线路接口电路与分立元件线路馈线驱动器
公开(公告)号：US20080095356A1
公开(公告)日：2008-04-24
申请号：US11586424
申请日：2006-10-23
申请人： Ion C. Tesu , Marius Goldenberg
发明人： Ion C. Tesu , Marius Goldenberg
IPC分类号： H04M1/00
CPC分类号： H04M19/005
摘要： A subscriber line interface circuit apparatus includes a signal processor having sense inputs for a sensed tip signal and a sensed ring signal of a subscriber loop. The signal processor generates at least one linefeed driver control current in response to the sensed signals. The signal processor is not a predominant source of any of a tip current or a ring current of the subscriber loop.
摘要翻译：用户线路接口电路设备包括信号处理器，其具有感测的尖端信号的感测输入和用户环路的感测振铃信号。信号处理器响应于所感测的信号而产生至少一个换行驱动器控制电流。信号处理器不是用户环路的尖端电流或环形电流中的任何一个的主要来源。

12. 发明授权

US06812744B2 Integrated circuit beta compensator for external interface circuitry 有权
公开(公告)号：US06812744B2
公开(公告)日：2004-11-02
申请号：US10262579
申请日：2002-09-28
申请人： Kim Fung Lee , Saroj Rout , Marius Goldenberg
发明人： Kim Fung Lee , Saroj Rout , Marius Goldenberg
IPC分类号： H03K190175
CPC分类号： H03K19/01825 , H03F3/343
摘要： An apparatus for interfacing an integrated circuit with external circuitry includes a transistor having an emitter coupled to a node for receiving a control current (IP) from the integrated circuit. A beta compensator disposed within the integrated circuit provides a compensating current (IM) to the node. The compensating current IM is proportional to a base current (IB) of the transistor. A method of interfacing the integrated circuit with external circuitry includes the step of providing the control current (IP) from the integrated circuit to a node coupled to a transistor emitter. A compensating current (IM) is provided to the node in response to the transistor base current (IB). The net node current provided to the emitter is IP+IB so that the transistor collector current is substantially the same as the control current. The transistor collector is coupled to the external circuitry.

13. 发明授权

US06737913B2 Differential mode circuitry and method of calibrating same without matched external current sources 有权
标题翻译：差分模式电路和校准方法，无需匹配的外部电流源
公开(公告)号：US06737913B2
公开(公告)日：2004-05-18
申请号：US09882938
申请日：2001-06-15
申请人： Marius Goldenberg
发明人： Marius Goldenberg
IPC分类号： G01R1900
CPC分类号： H03F3/45977
摘要： A common mode feedback circuit includes first and second nodes defining a differential node pair. A collective plurality of transconductors includes a first plurality of transconductors associated with the first node and a second plurality of transconductors associated with the second node. Each plurality, for example, may consist of 2 transconductors such that one may be serve as a common mode current sink and the other may be operated as a current source during calibration. At least one transconductor of the collective plurality has an adjustable transconductance. In various embodiments, each node has at least one transconductor with an adjustable transconductance. The common mode feedback circuit includes a calibration engine. The calibration engine adjusts at least one adjustable transconductor until a sensed differential voltage across the differential node pair is substantially zero without the use of external current sources.
摘要翻译：共模反馈电路包括限定差分节点对的第一和第二节点。集体多个跨导体包括与第一节点相关联的第一多个跨导体和与第二节点相关联的第二多个跨导体。例如，每个多个可以由2个跨导体组成，使得一个可以用作共模电流吸收器，另一个可以在校准期间作为电流源操作。集体多个的至少一个跨导体具有可调的跨导。在各种实施例中，每个节点具有至少一个具有可调跨导的跨导体。共模反馈电路包括校准引擎。校准引擎调节至少一个可调节的跨导体，直到差分节点对上的感测到的差分电压基本为零，而不使用外部电流源。

14. 发明授权

US07925005B2 Longitudinal balance calibration for a subscriber line interface circuit 有权
标题翻译：用户线接口电路的纵向平衡校准
公开(公告)号：US07925005B2
公开(公告)日：2011-04-12
申请号：US11586425
申请日：2006-10-23
申请人： Michael J. Mills , Marius Goldenberg , Alan F. Hendrickson , Ion C. Tesu , Jiangtao Yi
发明人： Michael J. Mills , Marius Goldenberg , Alan F. Hendrickson , Ion C. Tesu , Jiangtao Yi
IPC分类号： H04M1/00 , H04M9/00
CPC分类号： H04M3/005
摘要： A method of calibrating longitudinal balance for a subscriber line interface circuit includes providing a first and a second driver of a differential driver pair for driving a subscriber line. An output of each of the first and second drivers is coupled to a common output. The common output is coupled to an input of the first driver. The gain of at least one of the first and second drivers is adjusted until a calibration signal (V1) present at the input of the first driver is substantially the same as a calibration signal (V2) present at the input of the second driver.
摘要翻译：校准用户线接口电路的纵向平衡的方法包括提供用于驱动用户线的差分驱动器对的第一和第二驱动器。第一和第二驱动器中的每一个的输出耦合到公共输出端。公共输出耦合到第一驱动器的输入端。调整第一驱动器和第二驱动器中的至少一个驱动器的增益，直到存在于第一驱动器的输入端的校准信号（V1）与存在于第二驱动器的输入端的校准信号（V2）基本相同。

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