Display apparatus and control method
First Claim
1. A display apparatus comprising a monitor displaying a picture by receiving a video signal, further comprising:
- a voltage detector detecting a voltage level of the video signal; and
a microcomputer determining whether or not the voltage level detected by the voltage detector is beyond a predetermined allowable limit, and indicating abnormality of a video card when the detected voltage level is beyond the allowable limit.
1 Assignment
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Accused Products
Abstract
The present invention relates to a display apparatus and a control method, which comprises a monitor displaying a picture by receiving a video signal according to a display data channel standard. The present invention is comprised of microcomputer including a voltage detector detecting a voltage level of said video signal, wherein the microcomputer determines whether or not the detected voltage level is beyond a predetermined allowable limit and controls the display apparatus to display an indication of an abnormality of the video signal if the detected voltage level is beyond the predetermined allowable limit. With this configuration, a display apparatus and a method for controlling the same, which can determine whether or not the voltage level input from a video card is abnormal, by detecting the voltage level of the video signal, and solve a unstable output generated from the video signal having the abnormal voltage level signal.
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Citations
13 Claims
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1. A display apparatus comprising a monitor displaying a picture by receiving a video signal, further comprising:
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a voltage detector detecting a voltage level of the video signal; and
a microcomputer determining whether or not the voltage level detected by the voltage detector is beyond a predetermined allowable limit, and indicating abnormality of a video card when the detected voltage level is beyond the allowable limit. - View Dependent Claims (2, 3, 4)
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5. A method for controlling a display apparatus comprising a monitor displaying a picture by receiving a video signal, comprising the steps of:
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detecting a voltage level of the video signal;
determining whether or not the detected voltage level of the video signal is beyond a predetermined allowable limit; and
indicating abnormality of the video signal if it is determined that the detected voltage level is beyond the allowable limit. - View Dependent Claims (6, 7, 8)
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9. A microcomputer in a monitor displaying a picture in response to a received video signal transmitted from a video card of a computer according to a display data channel (DDC) standard, said microcomputer comprising:
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a voltage controller adjusting the voltage level of a video signal transmitted by the video card according to a DDC1 standard; and
a voltage detector detecting the adjusted voltage level;
said microcomputer determining whether or not the voltage level detected by the voltage detector is beyond a predetermined allowable limit, and changing to a DDC2 standard when the detected voltage level is beyond the allowable limit. - View Dependent Claims (10, 11, 12, 13)
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Specification