| 摘要 |
<p>PURPOSE: To improve the certainty of convergence CV correction and to simplify correction by tracking an ideal seed point inside a box test pattern, generated by a green CRT by a CCD camera and matching the vertical and horizontal CVs of red and blue CRTs. CONSTITUTION: A box test pattern is generated through the green CRT inside a projector 3, the geometrical positions of the projector 3 and a screen 1 are adjusted, and then the prescribed number of the seed points are generated. Horizontal and vertical tracking reference patterns are generated with the green seed points as a reference. By utilizing a cursor, generated from the seed points of the red and blue CRTs corresponding to the green seed points and tracking horizontal and vertical reference patterns by the CCD camera 2, the convergences of red, blue and green are matched.</p> |
