System for sharing Human-Computer Interface of a legacy device with expansion units

申请公布号：EP1903449(A1)

申请号：EP20070117012

申请日期：2007.09.24

申请公布日期：2008.03.26

申请人：

ITT MANUFACTURING ENTERPRISES, INC.

发明人：WIGHT, BRUCE

分类号：G06F13/38;G06F3/023

主分类号：G06F13/38

摘要：<p>A system (100) for sharing a human-computer interface (110) between a legacy device (120) and an expansion unit (130, 140) for supplementing operation of the legacy device includes a logic device (150) configured to selectively route input and output signals between the human-computer interface and the legacy device or the expansion unit. The expansion unit monitors input signals from the human-computer interface for control codes designating usage of the human-computer interface by either the expansion unit or the legacy device. The logic device includes a switching device that selectively decouples inputs from the human-computer interface from the legacy device during usage of the interface by the expansion unit to isolate the legacy device from input signals not intended for the legacy device.</p>

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