发明名称 |
CAMERA AND/OR DISPLAY DEVICE WITH HORIZONTAL MEANDER SCANNING |
摘要 |
A picture pick-up or display device, respectively for recording a scene or displaying a scene image, respectively with the aid of a line raster formed by a plurality of horizontal lines which are consecutively scanned in opposite directions. The device comprises a line deflection circuit in which the line deflection coil forms part of a resonant circuit whose tuning frequency is substantially equal to half the line frequency, as a result of which the power dissipation is kept low. By means of a control circuit it is ensured that corresponding points of scanned lines are accurately in line in the vertical direction, the control circuit being arranged for causing a zero-crossing of the line deflection current and a signal which is characteristic of half the video information of a line substantially to coincide. The control circuit comprises an analogue delay element for setting the time position of this signal. |
申请公布号 |
AU4695385(A) |
申请公布日期 |
1986.03.13 |
申请号 |
AU19850046953 |
申请日期 |
1985.09.02 |
申请人 |
PHILIPS: GLOEILAMPENFABRIEKEN, N.V. |
发明人 |
UWE ERICH KRAUS;ARNOLDUS JOHANNES JULIANA BOUDEWIJNS;CORNELIS ALEXANDER MARIA BOON;ADRIANUS JOHANNES FRENCH |
分类号 |
G09G1/04;H04N3/16;H04N3/30 |
主分类号 |
G09G1/04 |
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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