Systems and methods for capturing screen displays from a host computing system for display at a remote terminal
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United States of America Patent
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Jun 19, 2007
Grant Date -
Mar 3, 2005
app pub date -
Oct 15, 2004
filing date -
Dec 10, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention provides systems and methods for monitoring a host computing system from a maintenance computing system located at a remote location. The system of the present invention includes a frame grabber that is connected the digital output of a video controller associated with the host computing system and collects sets of data output in digital form from the video controller independent of an analog to digital converter. Each collected digital data set represents a frame of data displayed on a terminal of the host computing system by the video controller and is stored in a storage device associated with the frame grabber. Successive sets of data are also compared to each other, and the differences between the data are also stored in the storage device. During a maintenance session, a first data set representing the data currently displayed on the terminal of the host computing system is transmitted to the maintenance computing system, and thereafter, only changes between successive data sets are transmitted to update the maintenance computing system.
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