Display device for detecting abnormal image signal and method thereof
AssigneeSamsung Electronics Co., Ltd.
InventorYoung-Chan Kim
Life of this patent
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Abstract
A method and a display device for detecting an abnormal video signal by periodically checking R,G,B signals. The method includes selecting an R,G,B signal and setting a region of the selected signals to be checked; detecting a minimum pixel level value in the region of the selected R,G,B signal; comparing the minimum pixel level value for the selected R,G,B signal with a predetermined threshold value and checking if abnormal R,G,B signal are present; and displaying on a screen a message indicating whether the selected R,G,B signal is abnormal.
Claims15
A method of detecting an abnormal video signal in a display device, comprising:
- selecting an R,G,B signal and setting a region of the selected R,G,B signal to be checked;
- detecting a minimum pixel level value in the checked region of the selected R,G,B signal;
- comparing the minimum pixel level value for the selected R,G,B signal with a predetermined threshold value and checking if an abnormal R,G,B signal is present;
- and
- displaying on a screen a message indicating whether the selected R,G,B is abnormal.
A display device comprising:
- a signal inputting unit receiving R,G,B signals, a horizontal synchronization signal, and a vertical synchronization signal;
- a minimum value detector detecting a minimum pixel level value in a particular region of a selected R,G,B signal input from the signal inputting unit;
- a controller comparing the minimum pixel level value with a predetermined value and checks if the selected R,G,B signal is abnormal;
- and
- a warning message indicating an abnormal state of the selected R,G,B signal as determined by the controller.
A method of detecting an abnormal video signal in a display device, comprising:
- receiving R,G,B signals from a host;
- detecting a minimum pixel level value in an R,G,B, signal selected from the received R,G,B signals;
- determining if the selected R,G,B signal is abnormal based on a comparison between the minimum pixel level value in the selected R,G,B signal and a predetermined value;
- and
- displaying on a screen a message indicating whether the selected R,G,B signal is abnormal.
A display device comprising:
- a signal inputting unit receiving R,G,B video signals;
- an abnormal state detector detecting an abnormal state of in an R,G,B signal selected from among the received R,G,B signals based on a comparison of a detected pixel level value in the R,G,B signal and a predetermined value;
- and
- a warning message indicating whether an abnormal state is detected.
Dependencies are inferred from the claim text.