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LIGHTING APPARATUS AND CONTROL METHOD THEREOF

  • US 20130265348A1
  • Filed: 03/14/2013
  • Published: 10/10/2013
  • Est. Priority Date: 04/06/2012
  • Status: Active Grant
First Claim
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1. A lighting apparatus for an image display apparatus comprising:

  • a plurality of light sources corresponding to a plurality of areas of a screen; and

    a control unit configured to control a duty ratio of a turn-on period and a turn-off period of each light source by carrying out pulse width modulation control on the turn-on periods and the turn-off periods of said plurality of light sources according to an image signal to be inputted;

    wherein in cases where the duty ratio of each light source is controlled according to the image signal to be inputted, said control unit adjusts turn-on start timing of each light source in such a manner that a variation in the number of light sources which are turned on at the same time to be suppressed.

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