发明名称 |
METHOD FOR MEASUREMENT OF CONVERGENCE OF A THREE-GUN SHADOW-MASK CATHODE-RAY TUBE AND A DEVICE FOR THE APPLICATION OF SAID METHOD |
摘要 |
<p>Monochrome bar patterns approximately seven millimeters in width are produced on the screen of a three-color television picture tube by means of a video signal having a substantially Gaussian waveform. The value of the convergence component is given by the distance between centers of two bars of different colors. Measurement of convergence is carried out by means of a photosensor consisting of a charge-coupled photosensitive strip and an optical system comprising a biconvex lens and a cylindrical lens.</p> |
申请公布号 |
CA1241692(A) |
申请公布日期 |
1988.09.06 |
申请号 |
CA19840450198 |
申请日期 |
1984.03.22 |
申请人 |
VIDEOCOLOR |
发明人 |
LEGRAND, GUY;FAIVRE, MICHEL |
分类号 |
H01J9/42;H04N9/28;H04N17/04;(IPC1-7):H04N17/04 |
主分类号 |
H01J9/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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