System and method for measuring/evaluating moving image quality of screen
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United States of America Patent
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Issued Date -
Jul 20, 2006
app pub date -
Jun 30, 2003
filing date -
Jun 30, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A screen motion image quality measuring/evaluating apparatus according to the present invention comprises: a rotatable mirror 2; a camera 3 for capturing a screen through the mirror 2; and a control unit 6. The control unit 6 is arranged to control such that when it is detected based on a change in the luminance of a screen 5 that a test pattern contained in a motion image displayed on the screen 5 has passed a predetermined position of the screen 5, a trigger for rotation is given to the mirror 2, and such that after the start of rotation of the mirror 2, the mirror 2 rotates as keeping pace with the movement of the test pattern. Without electric synchronism of rotation with a motion image signal, a trigger for rotation can be given to the mirror 2. Thus, the quality of a motion image on the screen can be measured with a simple structure.
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