发明公开
- 专利标题： Timebase circuit
- 专利标题（中）： 时基电路
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申请号： EP85303884.2申请日： 1985-06-03
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公开(公告)号： EP0164980A1公开(公告)日： 1985-12-18
- 发明人: Jobling, David Trevor , Newton, Anthony David
- 申请人： MOTOROLA, INC.
- 申请人地址： 1303 East Algonquin Road Schaumburg, IL 60196 US
- 专利权人： MOTOROLA, INC.
- 当前专利权人： MOTOROLA, INC.
- 当前专利权人地址： 1303 East Algonquin Road Schaumburg, IL 60196 US
- 代理机构： Ibbotson, Harold
- 优先权： GB8414316 19840605
- 主分类号： H04N3/22
- IPC分类号： H04N3/22
摘要：
A timbase circuit is desribed for providing a horizontal drive correction waveform to correct for pincushion distortion in which a parabolic correction current is derived by squaring (4) a current proportional to the difference between the instantaneous and average values of the vertical ramp voltage. The correction current may be tilted by combination with a linear current proportional to the ramp voltage (7) and may also be amplitude controlled (16).
公开/授权文献
- EP0164980B1 Timebase circuit 公开/授权日：1990-01-31
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