Apparatus and method for adapting multiple operating mode monitor
First Claim
1. An adapter for controlling a multiple operating mode monitor, comprising:
- a memory for storing sets of monitor operating parameters for each of a plurality of operating modes at selectively addressable locations;
processing means for evaluating horizontal and vertical synchronizing signals from a video source to which the monitor is connected to identify one of a plurality of predetermined operating modes corresponding to the synchronizing signals;
means for selectively addressing the set of operating parameters corresponding to the identified operating mode; and
,means for adjusting operation of the monitor to correspond to the selected set of operating parameters.
1 Assignment
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Accused Products
Abstract
An adapter for a multiple operating mode monitor automatically controls the horizontal and vertical deflection circuits of the monitor cathode ray tube depending upon the characteristics of the video source to which the monitor is connected. The adapter has a digital memory for storing sets of monitor operating parameters for each of a plurality of predetermined operating modes at selectively addressable locations. A processor evaluates horizontal and vertical synchronizing signals from a video source to which the monitor is connected to identify one of the plurality of predetermined operating modes corresponding to the synchronizing signals. The operating mode may be evaluated and identified by measuring the period of the horizontal and vertical synchronizing signals form the video source. The memory location corresponding to the identified mode of operation is selectively addressed, the selected set of operating parameters, which may be in parallel format, being available as an output to a plurality of dynamic digital to analog converters. The digital to analog converters, which may be synchronized with the vertical frequency, provide analog control signals for the horizontal and vertical deflection circuits. The horizontal and vertical deflection circuits are adjusted responsive to the analog control signals to correspond to the selected set of operating parameters. The operating parameters may include horizontal and vertical frequency, horizontal and vertical amplitude, horizontal and vertical deflection phase position, brightness and contrast.
40 Citations
24 Claims
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1. An adapter for controlling a multiple operating mode monitor, comprising:
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a memory for storing sets of monitor operating parameters for each of a plurality of operating modes at selectively addressable locations; processing means for evaluating horizontal and vertical synchronizing signals from a video source to which the monitor is connected to identify one of a plurality of predetermined operating modes corresponding to the synchronizing signals; means for selectively addressing the set of operating parameters corresponding to the identified operating mode; and
,means for adjusting operation of the monitor to correspond to the selected set of operating parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A multiple operating mode monitor, comprising:
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a cathode ray tube; horizontal and vertical deflection circuits coupled to the cathode ray tube; a digital memory for storing sets of monitor operating parameters for each of a plurality of operating modes at selectively addressable locations; processing means for evaluating horizontal and vertical synchronizing signals from a video source to which the monitor is connected to identify one of a plurality of predetermined operating modes corresponding to the synchronizing signals; means for selectively addressing and outputting the set of operating parameters corresponding to the identified operating mode; and
,plurality of dynamic digital to analog converters coupled to the addressing and outputting means for converting the operating parameters into analog control signals for the horizontal and vertical deflection circuits; and
,means for adjusting operation of the deflection circuits responsive to the analog control signals to correspond to the selected set of operating parameters. - View Dependent Claims (11, 12, 13, 14)
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15. A method for adapting a multiple mode monitor to a plurality of video sources having different operating parameters, comprising the steps of:
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storing sets of monitor operating parameters for each of a plurality of operating modes at selectively addressable locations; evaluating horizontal and vertical synchronizing signals from a video source to which the monitor is connected to identify one of a plurality of predetermined operating modes corresponding to the synchronizing signals; selectively addressing the set of operating parameters corresponding to the identified operating mode; and
,adjusting operation of the monitor to correspond to the selected set of operating parameters. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification