会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明公开
    • DIGITAL TELEPHONY CARRIER CURRENT SYSTEM
    • 数字电话载波电流系统
    • EP1159824A1
    • 2001-12-05
    • EP00915834.6
    • 2000-02-21
    • PHONEX CORPORATION
    • KNAB, John, M.BULLOCK, Scott, R.SMITH, Scott, D.BARTHOLOMEW, David, B.
    • H04M11/00H04M3/42H04Q7/32H04Q7/20H04J13/00H04J3/16
    • H04B3/54H04B2203/5437
    • A distribution system for the distribution of digital telephony data streams for use in a building or facility which uses, as a communication link, AC power lines (105) is described. This distribution system communicates signals and data without the need for continuous telephone lines. This system provides a base unit (104) connected to a subscriber interface unit (102), which in turn is connected to a public communication network. The base unit (104) further provides an AC power line interface (105) over which communication signals are communicated to extension units (106a, 106b, ..., 106e). The extension units (106a, 106b, ..., 106e) support standard user telecommunication devices, such as telephones, switchboards, facsimile machines, and modems. The preferred embodiment of this invention uses a FSK encoding/de-coding scheme to support the communication of the digital signals and to improve system quality, reducing errors and having higher noise immunity.
    • 描述了用于在使用AC电力线(105)作为通信链路的建筑物或设施中使用的数字电话数据流的分配系统。 这种分配系统不需要连续的电话线就可以传输信号和数据。 该系统提供连接到用户接口单元(102)的基本单元(104),基本单元又连接到公共通信网络。 基本单元(104)还提供AC电力线接口(105),通信信号通过该AC电力线接口传输到扩展单元(106a,106b,...,106e)。 扩展单元(106a,106b,...,106e)支持诸如电话,交换机,传真机和调制解调器的标准用户电信设备。 本发明的优选实施例使用FSK编码/解码方案来支持数字信号的通信并提高系统质量,减少错误并具有更高的抗噪性。