发明授权
US5659684A Methods and apparatus for interconnecting personal computers (PCs) and
local area networks (LANs) using packet protocols transmitted over a
digital data service (DDS)
失效
使用通过数字数据服务（DDS）发送的分组协议来互连个人计算机（PC）和局域网（LAN）的方法和装置
- 专利标题： Methods and apparatus for interconnecting personal computers (PCs) and local area networks (LANs) using packet protocols transmitted over a digital data service (DDS)
- 专利标题（中）： 使用通过数字数据服务（DDS）发送的分组协议来互连个人计算机（PC）和局域网（LAN）的方法和装置
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申请号： US383302申请日： 1995-02-03
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公开(公告)号： US5659684A公开(公告)日： 1997-08-19
- 发明人: Michael Joseph Giovannoni , Joseph David Kralowetz , James Francis Landry , Thomas DeBruyne Stearns
- 申请人： Michael Joseph Giovannoni , Joseph David Kralowetz , James Francis Landry , Thomas DeBruyne Stearns
- 申请人地址： VA Vienna
- 专利权人： ISDN Systems Corporation
- 当前专利权人： ISDN Systems Corporation
- 当前专利权人地址： VA Vienna
- 主分类号： H04L12/46
- IPC分类号： H04L12/46 ; G06F13/00
摘要：
Methods and apparatus for providing virtual local connection of one PC to another PC, a PC to a LAN and from one LAN to another LAN, over a synchronous digital wide area network (effectively enabling a LAN to be extended through a synchronous digital wide area network on a virtual basis), using a PC adapter card that includes an on board Data Service Unit (DSU)/Channel Service Unit (CSU), driven by control means that functions at least in part as a LAN interface emulator. The invention includes methods (and corresponding apparatus) for configuring the PC adapter card under program control; for establishing connectivity between at least one PC and at least one LAN, each separately connected to the network, via a gateway access thru the digital wide area network; and for utilizing the PC motherboard microprocessor to run user applications software while simultaneously being able to handle the real time constraints of running packet protocols (e.g., Frame Relay, X.25, SMDS, etc.), using a novel control means.
公开/授权文献
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