Browse Prior Art Database

IMON - Tool for Capturing and/or Recognizing Images on Analog Computer Displays

IP.com Disclosure Number: IPCOM000106846D
Original Publication Date: 1993-Dec-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Baumgartner, RS: AUTHOR [+4]

Abstract

The Solution Evaluation Tool (SET) is a non-intrusive test tool used for automated testing of software that runs on PC's and PS/2*s. SET runs an automated test case that drives the input devices (keyboard and/or mouse) of a DUT Device Under Test (DUT) and monitors the DUT's display output. SET drives the input and waits for the appropriate output on the display. When the output occurs, the time is recorded and test case continues on, driving the next group of input signals.

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IMON - Tool for Capturing and/or Recognizing Images on Analog Computer Displays

      The Solution Evaluation Tool (SET) is a non-intrusive test tool
used for automated testing of software that runs on PC's and PS/2*s.
SET runs an automated test case that drives the input devices
(keyboard and/or mouse) of a DUT Device Under Test (DUT) and monitors
the DUT's display output.  SET drives the input and waits for the
appropriate output on the display.   When the output occurs, the time
is recorded and test case continues on, driving the next group of
input signals.

      The existing SET hardware "steals" the digital signals it needs
from the video hardware inside the computer.  This technique is
becoming increasingly difficult to implement, and simply will not
work with some present and future displays.  "Imon" is hardware
upgrade which obtains the video signals from the video connectors on
the DUT.  All of the connections are made externally to the DUT.
Imon intercepts and digitizes the RGB (Red, Green, Blue) analog
signals that drive the computer display.  The digitized signals are
used by SET to determine if the proper screen if present.

      Normally, when an analog signal is digitized, the sample
frequency must be greater than twice the bandwidth of the signal
(Nyquist's theorem).  This would require a tool like Imon to have a
sample clock of greater than 200MHz.  However, Imon uses a maximum
sample clock frequency of 30MHz.  This greatly reduces...