Title:
HORIZONTAL DEFLECTION CIRCUIT
Document Type and Number:
Japanese Patent JP3932696
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent a modulation efficiency from being deteriorated by connecting a series circuit consisting of two S-shape correction capacitor and a horizontal winding of a deflection yoke to a midpoint of two parallel circuits consisting of a collector of a horizontal output transistor(TR), a damper diode and a resonance capacitor, and connecting an inner pin correction capacitor between a modulation source and the midpoint of the two S-shape correction capacitors.
SOLUTION: A DC power supply 2 supplies a power supply voltage. A drive signal with a horizontal period is given to a base of an horizontal output TR 1 to switch the horizontal output TR 1 for the operation of the horizontal deflection circuit. When a modulation source 10 applies a parabolic voltage with a vertical period to the circuit, a deflection current Iy flows to a deflection coil horizontal winding 14, and a modulation current I' based on the parabolic voltage with the vertical period flows to the inner pin correction coil 15. The deflection current Iy is modulated by a parabolic voltage in response to a difference between a collector voltage of the horizontal output TR 1 and the parabolic voltage with the vertical period so that horizontal pin cushion distortion is corrected.
Inventors:
Toshiro Kato
Application Number:
JP27953398A
Publication Date:
June 20, 2007
Filing Date:
October 01, 1998
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H04N3/23; (IPC1-7): H04N3/23
Domestic Patent References:
| JP287873A |
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano
Hiroki Naito
Daisuke Nagano
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