Title:
CONVERGENCE CORRECTION DEVICE
Document Type and Number:
Japanese Patent JP3475605
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve mis-convergence with respect to a change in brightness of the screen by enhancing high speed tracking performance of convergence with respect to fluctuation in a high voltage.
SOLUTION: A voltage VABL generated in a resistor RABL in a block A relates to a high voltage because the voltage VABL changes with a current flowing to a flyback transformer FBT. Thus, the voltage VABL is applied to detect high voltage fluctuation. Furthermore, the circuit block A is used for another purpose in a conventional device. The high voltage fluctuation detected by the block A is fed to a block B, a detected waveform is operated and a signal in relation to a high voltage fluctuation from the block B is fed back to a convergence correction circuit (block C). Thus, the convergence with respect to the high voltage fluctuation especially is corrected.
Inventors:
Junichi Minamimoto
Application Number:
JP27447195A
Publication Date:
December 08, 2003
Filing Date:
October 23, 1995
Export Citation:
Assignee:
ソニー株式会社
International Classes:
H01J29/54; G09G1/00; H04N9/28; (IPC1-7): H04N9/28; H01J29/54
Domestic Patent References:
| JP5168025A | ||||
| JP6318850A | ||||
| JP6062790A | ||||
| JP4122187A | ||||
| JP57100374U |
Attorney, Agent or Firm:
Yoshisue Kakuda (2 outside)