公开(公告)号：US09832533B2

公开(公告)日：2017-11-28

申请号：US13969064

申请日：2013-08-16

申请人： PPC Broadband, Inc.

发明人： Yan Li ,  Paul F. Bailey ,  Erdogan Alkan

IPC分类号： H04N7/173 ,  H04N21/61 ,  H04L12/28 ,  H04N7/10 ,  H04N21/436 ,  H03H7/18 ,  H03H7/48

CPC分类号： H04N21/61 ,  H03H7/185 ,  H03H7/48 ,  H04L12/2801 ,  H04L12/2892 ,  H04N7/104 ,  H04N7/17309 ,  H04N21/436 ,  H04N21/6118

摘要： A network interface device has a safeguard apparatus. The safeguard apparatus is operable in power on, power off, and degraded power conditions. In power on operation, the safeguard apparatus maintains the quality of active and passive branch communications. During power off and degraded power operation, the safeguard apparatus safeguards the quality of the passive communication path.

公开(公告)号：US08793755B2

公开(公告)日：2014-07-29

申请号：US13669805

申请日：2012-11-06

申请人： PPC Broadband, Inc.

发明人： Noah P. Montena ,  Steven K. Shafer ,  Erdogan Alkan ,  Paul F. Bailey

IPC分类号： H04N7/173 ,  H04N7/10

CPC分类号： H04N7/104 ,  H04N7/17309 ,  H04N21/61 ,  H04N21/6118

摘要： A network interface device including a signal splitter which conducts CATV signals through an active branch circuit, the active branch circuit including an active signal conditioner which modifies characteristics of active branch signals conducted through the active branch circuit, a sensor connected to sense normal, inoperative and abnormally operative conditions, the sensor removing a control signal indicative of inoperative and abnormal operating conditions, a selectable switch connected to the active branch circuit, the selectable switch communicating the CATV signals between the CATV network and the subscriber devices when in an activated position, and the selectable switch passing the signals to a signal reduction path when in a deactivated position, the selectable switch assuming the deactivated position in response to the de-assertion of the control signal, and a phase cancellation circuit connected to the signal reduction path.

摘要翻译： 一种网络接口装置，包括通过有源分支电路传送CATV信号的信号分离器，所述有源分支电路包括有源信号调节器，其修改通过有源分支电路传导的有源分支信号的特性，连接到感测正常，不工作的传感器和 所述传感器去除指示不工作和异常操作条件的控制信号，连接到所述主动分支电路的可选开关，所述可选开关在处于激活位置时在所述CATV网络和所述订户设备之间传送CATV信号，以及 所述可选开关在处于去激活位置时将所述信号传递到信号减少路径，所述可选开关响应于所述控制信号的断言而假定去激活位置，以及连接到所述信号降低路径的相位消除电路。