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1. 发明授权

US06408057B1 Telephone line interfacing circuit used for both voice and non-voice terminals and method for controlling the same 失效
标题翻译：用于语音和非语音终端的电话线接口电路及其控制方法
公开(公告)号：US06408057B1
公开(公告)日：2002-06-18
申请号：US08855904
申请日：1997-05-14
申请人： Young-Soo Lee , Hyun-Chang Yoo , Sang-Yong Han , Young-Chul Kim
发明人： Young-Soo Lee , Hyun-Chang Yoo , Sang-Yong Han , Young-Chul Kim
IPC分类号： H04M1100
CPC分类号： H04N1/32708 , H04N1/32704 , H04N1/32728
摘要： A line interface circuit having a dialer, a line interface unit and a DC masking circuit is adapted to execute an operation in either an emergency mode or a power-on mode. The line interface circuit unifies a voice processing part and an image processing part. The line interface circuit includes a single dialer, a communication port coupled to a non-voice terminal, and a line interface control unit for receiving dial information from a key matrix input at the non-voice terminal via the communication port in a power-on state of the non-voice terminal. The line interface control unit derives DC power converted from AC power supplied form a desired AC power supply, and transferring the dial information to the dialer. A method for controlling the line interface circuit is also provided to selectively couple a non-voice terminal and a voice terminal both equipped in a telephone communication system to a telephone line via the line interface circuit.
摘要翻译：具有拨号器，线路接口单元和DC屏蔽电路的线路接口电路适于在紧急模式或通电模式下执行操作。线路接口电路使语音处理部和图像处理部统一。线路接口电路包括单个拨号器，耦合到非语音终端的通信端口和线路接口控制单元，用于经由通信端口在开机状态下从非语音终端输入的密钥矩阵接收拨号信息非语音终端的状态。线路接口控制单元导出从所需交流电源提供的交流电源转换的直流电力，并将拨号信息传送到拨号器。还提供了一种用于控制线路接口电路的方法，用于经由线路接口电路将电话通信系统中都配备的非语音终端和语音终端选择性地耦合到电话线路。

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