Method and apparatus for dynamically testing video equipment

Abstract

A method and apparatus are presented for dynamically testing video equipment. One or more test patterns utilize different regions of video signal characteristics. Adjustment is made to the video characteristics of a region until a perceived parameter of the region matches a second region. A performance parameter of said video equipment is determined from said adjustment.

1 . A method for testing video equipment comprising:
 obtaining a test pattern comprising a first region having a first video characteristic and a second region having a second video characteristic;   displaying said test pattern in a display system;   adjusting said second video characteristic until a visual parameter of said first video characteristic matches a visual parameter of said second video characteristic; and   determining a performance metric of said display system from an adjusted value of said visual parameter of said first video characteristic.   
     
     
         2 . The method of  claim 2  wherein said first video characteristic comprises low frequency information. 
     
     
         3 . The method of  claim 2  wherein said second video characteristic comprises high frequency information. 
     
     
         4 . The method of  claim 2 , wherein said visual parameter comprises perceived brightness. 
     
     
         5 . A video test generator comprising:
 a test pattern circuit configured to present one of a plurality of test patterns during a test process based on one or more display parameters, said one or more test patterns each comprising a first region having a first video characteristic and a second region having a second video characteristic;   a control interface configured to receive said one or more display parameters prior to a test process, said control interface further configured to receive user input to adjust a signal parameter of said first video characteristic;   a display configured to display said presented test pattern.   
     
     
         6 . The video test generator of  claim 5 , wherein said test pattern circuit is configured to generate said one of said plurality of test patterns based on a pattern algorithm and said one or more display parameters. 
     
     
         7 . The video test generator of  claim 5  wherein said first video characteristic comprises low frequency information. 
     
     
         8 . The video test generator of  claim 7 , wherein said second video characteristic comprises high frequency information.