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Night vision system and control method thereof

  • US 20030160153A1
  • Filed: 02/24/2003
  • Published: 08/28/2003
  • Est. Priority Date: 02/27/2002
  • Status: Active Grant
First Claim
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1. A night vision system, comprising:

  • a display; and

    a controller that displays an image on the display, the controller including a gamma amplifier which;

    receives a brightness signal constituting an image signal indicative of an image to be displayed on the display;

    produces a gamma correction signal from the brightness signal based on a brightness ratio characteristic in which a display brightness is set to a maximum brightness using a first brightness correction ratio when a signal level of the brightness signal is a maximum signal level, and the display brightness is set using a second brightness correction ratio which is lower than the first brightness correction ratio when the signal level of the brightness signal is lower than the maximum signal level; and

    outputs the produced gamma correction signal to the display.

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