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1. 发明授权

US06195702B1 Modem for maintaining connection during loss of controller synchronism 失效
标题翻译：用于在控制器同步丢失期间维持连接的调制解调器
公开(公告)号：US06195702B1
公开(公告)日：2001-02-27
申请号：US08980581
申请日：1997-12-01
申请人： Terry L. Cole , David M. Kaplowitz
发明人： Terry L. Cole , David M. Kaplowitz
IPC分类号： G06F1516
CPC分类号： H04L25/05
摘要： An improved modem is disclosed. In a preferred embodiment, the improved modem detects a loss of host synchronism, indicated by an under flow event such as a lack of, or impending lack of data from the host. Normally, the under flow event would result in a lack of data to be sent to a receiving modem, causing a communication link between the two modems to be broken. The improved modem notifies the host of the under flow event and supplies alternate data to the data encoding unit of the modem in order to keep the communication link established. The alternate data supplied is typically an instruction or other action that requires no data from the host and keeps the communication link active. When the host regains synchronism, the host sends data to the modem and normal processing continues.
摘要翻译：公开了一种改进的调制解调器。在优选实施例中，改进的调制解调器检测主机同步的丢失，由诸如来自主机的数据不足或即将缺少的流下事件指示。通常，下流事件将导致数据不能发送到接收调制解调器，导致两个调制解调器之间的通信链路被破坏。改进的调制解调器通知主机下流事件，并将备用数据提供给调制解调器的数据编码单元，以保持通信链路的建立。提供的备用数据通常是一个指令或其他动作，不需要来自主机的数据，并保持通信链路的有效。当主机恢复同步时，主机向调制解调器发送数据，并继续正常处理。

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