Patent ID: 6124884
Filing Date: 2000-09-26
Classification: H04N

Abstract:
An apparatus for measuring image qualities of a color display unit, comprising:a color video camera for imaging a display screen of a first color display unit;a computer for measuring image qualities of the display screen of said first color display unit based on an image signal generated by said color video camera;a second color display unit for displaying data of the image qualities measured by said computer; andimage signal generating means controllable by said computer for generating an image signal required to measure the image qualities and supplying the image signal generated thereby to the first color display unit;said computer comprising means for supplying the image signal generated by said color video camera to said second color display unit to display an image of the display screen of the first color display unit in a predetermined display area on a display screen of said second color display unit to facilitate relative positional adjustment between said first color display unit and said color video camera, said predetermined display area being less than a full screen area of said second color display unit's display screen wherein said second color display unit displays in said predetermined display area on the display screen thereof at least one reference frame with respect to the image of the display screen of the first color display unit to facilitate positional adjustment of the video camera with respect to the first color display unit by positioning of the image in the predetermined display area with respect to the at least one reference frame.