| 摘要 |
PURPOSE:To attain correction of deflection independently at each region by applying an output multiplying analogically a horizontal signal and a vertical signal to a deflection correcting means via a region designating switch and a gain adjusting means. CONSTITUTION:The vertical signal SV and the horizontal signal SH are applied respectively to terminals 35V and 35H and then fed to a multiplier 36. The multiplier 36 multiplies four multiplication operations shown in equations (1)-(4), where R1, R2 are proportional constants and K1, K2 are fixed constants. The outputs S1-S4 of the multiplication are applied respectively to variable resistors 371-379 directly or via changeover switches 381, 382, 391, 392 and 393. A signal obtained from a slider of the variable resistors 371-379 is synthesized respectively via resistors 401-409 and fed to an inverting input terminal of a differential amplifier 41. Then an output of the differential amplifier 41 is fed to a horizontal conversion yoke 4, where the convergence is corrected. |
