公开(公告)号：WO1995008228A1

公开(公告)日：1995-03-23

申请号：PCT/US1994010509

申请日：1994-09-19

Applicant: SCIENTIFIC-ATLANTA, INC.

Inventor： SCIENTIFIC-ATLANTA, INC. ,  THOMPSON, Leo, J. ,  DUBBERLY, Gregory, T. ,  RITCHIE, John, A., Jr. ,  FELLOWS, David, M.

IPC: H04J01/00

CPC classification number: H04Q11/0478 ,  H04H20/81 ,  H04H60/96 ,  H04J1/12 ,  H04J3/1623 ,  H04J2203/0041 ,  H04J2203/0089 ,  H04L12/2801 ,  H04L12/413 ,  H04M7/006 ,  H04N7/10 ,  H04N7/17309 ,  H04N2007/1739 ,  H04Q2213/13332

Abstract: A broadband communications system having means for coupling telephony (10) or other digital networks to a CTV network (12). The system includes transmitting a multiplex of telephony signals in 3 MHz channels in the forward band of the CTV network. Each 3 MHz channel is QPR modulated on a carrier and contains multiple subscriber telephony signals. The forward telephony channels are demodulated and demultiplexed by a plurality of subscriber terminals into the individual telephony signals directed to an addressed subscriber. The individually addressed telephony signal is then applied to a line card which connects the subscriber telephony equipment to the system. Audio and control signals returning from the subscriber are digitized into standard telephony signals and modulated on a carrier in 50 kHz reserved telephony channels onto the reverse band of the CTV network. The multiplicity of reverse band telephony channels are demodulated and multiplexed into a standard telephony signal which can be directly interfaced to the telephony network.

Abstract translation: 一种具有用于将电话（10）或其他数字网络耦合到CTV网络（12）的装置的宽带通信系统。 该系统包括在CTV网络的前向频带中传输3MHz信道中的电话信号的复用。 每个3 MHz信道在载波上进行QPR调制，并包含多个用户电话信号。 前向电话信道被多个用户终端解调和解复用为针对寻址用户的各个电话信号。 然后将单独寻址的电话信号应用于将用户电话设备连接到系统的线路卡。 从用户返回的音频和控制信号被数字化为标准电话信号，并在50kHz保留电话信道的载波上调制到CTV网络的反向频带上。 反向频带电话信道的多样性被解调和多路复用到可以直接接口到电话网络的标准电话信号中。

公开(公告)号：EP0719484A1

公开(公告)日：1996-07-03

申请号：EP94928152.0

申请日：1994-09-19

Applicant: SCIENTIFIC-ATLANTA, INC.

Inventor： THOMPSON, Leo, J. ,  DUBBERLY, Gregory, T. ,  RITCHIE, John, A., Jr. ,  FELLOWS, David, M.

IPC: H04J1 ,  H04H20 ,  H04J3 ,  H04L12 ,  H04M3 ,  H04M7 ,  H04N7 ,  H04Q11 ,  H04H60

CPC classification number: H04Q11/0478 ,  H04H20/81 ,  H04H60/96 ,  H04J1/12 ,  H04J3/1623 ,  H04J2203/0041 ,  H04J2203/0089 ,  H04L12/2801 ,  H04L12/413 ,  H04M7/006 ,  H04N7/10 ,  H04N7/17309 ,  H04N2007/1739 ,  H04Q2213/13332

Abstract: A broadband communications system having means for coupling telephony (10) or other digital networks to a CTV network (12). The system includes transmitting a multiplex of telephony signals in 3 MHz channels in the forward band of the CTV network. Each 3 MHz channel is QPR modulated on a carrier and contains multiple subscriber telephony signals. The forward telephony channels are demodulated and demultiplexed by a plurality of subscriber terminals into the individual telephony signals directed to an addressed subscriber. The individually addressed telephony signal is then applied to a line card which connects the subscriber telephony equipment to the system. Audio and control signals returning from the subscriber are digitized into standard telephony signals and modulated on a carrier in 50 kHz reserved telephony channels onto the reverse band of the CTV network. The multiplicity of reverse band telephony channels are demodulated and multiplexed into a standard telephony signal which can be directly interfaced to the telephony network.