发明名称 |
Television line output circuit. |
摘要 |
<p>A television line output circuit comprises a first sawtooth network with a diode (D), a trace capacitor (Ct), a retrace capacitor (Cr) and a line deflection coil (Ly), and a second sawtooth network with a diode (D'), a trace capacitor (C't), a retrace capacitor (C'r) and a coil (L'). The diodes (D, D') are connected in series and the two sawtooth networks connected across a line output transistor (Tr). A first modulation source (M1) is connected across the trace capacitor (C't) in the second sawtooth network to modulate the line deflection current to overcome East-West pin-cushion distortion. A resistor (R) of low ohmic value is connected between the anode of the diode (D') in the second sawtooth network and earth and a second modulation source (M2) is connected across this resistor (R). The second modulation source (M2) provides a signal dependent on beam current to correct for display errors at line frequency rate as they occur.</p> |
申请公布号 |
EP0253445(A2) |
申请公布日期 |
1988.01.20 |
申请号 |
EP19870201327 |
申请日期 |
1987.07.14 |
申请人 |
PHILIPS ELECTRONICS UK LIMITED;KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
TALKS, RAYMOND;BRUTON, THADDAEUS EDWARD |
分类号 |
H04N3/16;H04N3/22;H04N3/23;H04N3/233 |
主分类号 |
H04N3/16 |
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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