公开(公告)号：US06538781B1

公开(公告)日：2003-03-25

申请号：US09283400

申请日：1999-04-01

申请人： John Beierle ,  Jacob Needle ,  Dimitrios Kokkinos

发明人： John Beierle ,  Jacob Needle ,  Dimitrios Kokkinos

IPC分类号： H04J1402

CPC分类号： H04J14/0227 ,  H04B10/2503 ,  H04B10/50 ,  H04B10/60 ,  H04J14/02 ,  H04J14/0226 ,  H04J14/0228 ,  H04J14/0232 ,  H04J14/0241 ,  H04J14/0247 ,  H04J14/0252 ,  H04J14/0278 ,  H04J14/0282 ,  H04J14/0298 ,  H04N7/17309 ,  H04N7/22 ,  H04Q11/0005 ,  H04Q2011/0039

摘要： A system for distributing multimedia information from a central office to a plurality of customer's premises each interconnected to the central office with a dedicated optical fiber includes a switch for transmitting a plurality of optical bands from the central office to each of the subscriber premises. The switch, being located in the central office and controlled by selection signals provided to or by the central office, selects a subset of first signals, either electrical or optical, and blocks others of the signals that are not contained within the subset so that the customer receives only the signals subscribed to by the customer. Each customer's premises has a receiver, coupled to the corresponding dedicated fiber, to detect the subset desired by the customer. Moreover, the system is arranged to transmit customer-specific signals in a downstream direction to the receiver, with each receiver being arranged to propagate upstream signals which are the counterparts to the customer-specific signals.

摘要翻译： 一种用于将多媒体信息从中心局分发到多个用户的房屋的系统，每个客厅的房屋都与专用光纤互连到中心局，包括用于从多个光学频带从中心局向每个用户房屋发送的交换机。 位于中心局并由中央局提供的选择信号控制的开关选择电或光学的第一信号的子集，并且阻止不包含在子集内的其它信号，使得 客户仅接收客户订购的信号。 每个客户的房屋具有耦合到相应的专用光纤的接收器，以检测客户所期望的子集。 此外，该系统被布置成将下游方向的客户特定信号发送到接收机，其中每个接收机布置成传播作为客户特定信号的对应物的上行信号。

公开(公告)号：US6084946A

公开(公告)日：2000-07-04

申请号：US201463

申请日：1998-11-30

申请人： John Beierle

发明人： John Beierle

IPC分类号： H04M1/24 ,  H04M3/08 ,  H04M3/22

CPC分类号： H04M3/306

摘要： A telephone wire pair is qualified for digital signal transmission by central office testing. The tip-to-ring capacitance of the wire pair is measured while applying an test signal in the 20-30 Hz range to the wire pair. The tip-to-ring capacitance is used to compute a first length, and the first length is compared to a pre-determined length. If the first length exceeds the pre-determined length, then the wire pair is qualified based upon another comparison of the measured capacitance to a pre-determined capacitance. On the other hand, the first length is less than the pre-determined length, the tip-to-ring capacitance is measured at a frequency of, preferably, 600 Hz. The test signal at this frequency minimizes errors due to resistive and inductive components of the primary constants of the wire pair and/or a ringing device connected to the wire pair. A final comparison between the pre-determined capacitance and the measured capacitance at the higher frequency determines whether or not the pair qualifies for digital transmission.

摘要翻译： 电话线对通过中心局测试进行数字信号传输。 测量线对的尖端对环电容，同时将测量信号在20-30Hz范围内施加到电线对。 尖端到环形电容用于计算第一长度，并将第一长度与预定长度进行比较。 如果第一长度超过预定长度，则基于测量的电容与预定电容的另一比较，线对被限定。 另一方面，第一长度小于预定长度，以优选为600Hz的频率测量尖端至环形电容。 在该频率下的测试信号使由线对和/或连接到线对的振铃装置的主要常数的电阻和电感分量引起的误差最小化。 在较高频率下，预定电容和测量电容之间的最终比较确定该对是否符合数字传输。