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1. 发明授权

US6041105A Adapter circuitry for computers to support computer telephony 有权
标题翻译：用于计算机支持计算机电话的适配器电路
公开(公告)号：US6041105A
公开(公告)日：2000-03-21
申请号：US144438
申请日：1998-09-01
申请人： Chung-Yu Wu , Ching-Piao Su
发明人： Chung-Yu Wu , Ching-Piao Su
IPC分类号： H04M11/06 , H04M11/00
CPC分类号： H04M11/06
摘要： An external adapter circuitry is plugged into the printer port of a host computer to provide the utility of computer telephony for the host computer. The circuitry is housed in a compact box which is about the size of a common parallel port connector. The circuitry consists of a telephone line interface for receiving and sending signals from/to the telephone line; a printer port interface for sending data to and receiving data from the host computer; a couple of registers for latching signal-in and signal-out; a A/D converter for converting analog signals to digital signals; and a D/A converter for converting digitized signals to analog signals. More specially, the electricity of the entire circuitry is supplied from a signal-to-power converter which obtains voltages from the printer port. Therefore, the external adapter circuitry does not need a power line for external power supply.
摘要翻译：外部适配器电路插入到主计算机的打印机端口中，为主计算机提供计算机电话的实用程序。该电路容纳在一个紧凑的盒子中，其尺寸约为公共并行端口连接器的尺寸。该电路由用于接收和发送信号到电话线的电话线路接口组成; 用于向主计算机发送数据并从主机接收数据的打印机端口接口; 用于锁存信号和信号的几个寄存器; 用于将模拟信号转换为数字信号的A / D转换器; 以及用于将数字化信号转换为模拟信号的D / A转换器。更具体地说，整个电路的电力是从从打印机端口获得电压的信号 - 功率转换器提供的。因此，外部适配器电路不需要用于外部电源的电源线。

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