发明名称 |
Device for measuring convergence of color cathode ray tube |
摘要 |
A device for measuring convergence of color cathode ray tube including means for producing a white measurement pattern on a viewing screen of the color cathode ray tube, a color image pickup device for picking up the white measurement pattern on the viewing screen, a memory unit for storing color signals transmitted from the color image pickup device, a discrimination unit for discriminating which of blue, green, and red phosphors glows every picture elements of the color image pickup device based on signals from adjacent picture elements, and a calculation unit for a finding out a misconvergence from discriminated results assures an accurate convergence measurement by one time of image pickup only.
|
申请公布号 |
US5028849(A) |
申请公布日期 |
1991.07.02 |
申请号 |
US19880258178 |
申请日期 |
1988.10.14 |
申请人 |
MINOLTA CAMERA KABUSHIKI KAISHA |
发明人 |
KAWAKAMI, YUICHI;ICHIKAWA, TERUO;FURUKAWA, HIROSHI |
分类号 |
H01J9/44;H01J9/42;H04N17/04 |
主分类号 |
H01J9/44 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|