发明公开
- 专利标题: VIDEO DISPLAY APPARATUS
- 专利标题(中): 视频显示设备
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申请号: EP03746484申请日: 2003-04-14
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公开(公告)号: EP1496686A4公开(公告)日: 2007-03-28
- 发明人: YAMATE KAZUNORI
- 申请人: MATSUSHITA ELECTRIC IND CO LTD
- 专利权人: MATSUSHITA ELECTRIC IND CO LTD
- 当前专利权人: MATSUSHITA ELECTRIC IND CO LTD
- 优先权: JP2002114563 2002-04-17; JP2003026738 2003-02-04; JP2003105948 2003-04-10
- 主分类号: G09G1/04
- IPC分类号: G09G1/04 ; H04N3/32
摘要:
A video display apparatus includes a brightness signal processing circuit, a color difference signal processing circuit, an RGB matrix circuit, a CRT drive circuit, a CRT, a plurality of VM coils, a plurality of scan rate modulating circuit blocks, a horizontal deflection circuit, a vertical deflection circuit, a horizontal deflection coil, and a vertical deflection coil. Electron beams generated and directed into the CRT by the CRT drive circuit are caused, by horizontal and vertical deflection coils, to perform horizontal and vertical scans. The plurality of scan rate modulating circuit blocks provide rate modulation currents to the plurality of VM coils, whereby the plurality of VM coils generate rate modulation fields to provide local rate modulations to the horizontally scanning electron beams.
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