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Display apparatus and control method

  • US 6,859,200 B2
  • Filed: 10/26/2001
  • Issued: 02/22/2005
  • Est. Priority Date: 12/27/2000
  • Status: Expired due to Fees
First Claim
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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.

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