| 摘要 |
PROBLEM TO BE SOLVED: To enable a CRT inspection correcting device of a CRT drive power source for inspecting a CRT to easily correct the large distortion of a flat CRT or the like which is rather hard to correct in a usual method. SOLUTION: Correction signal data conforming to trapezoidal waves or a distortion volume are previously stored in a memory 1 shown in Figure 1. The correction signal data are read out by an address counter 2, and as a result, analog correction signals are outputted from a correction circuit 7. The correction signals are used for modulating a power supply voltage for a horizontal deflection generating circuit 11, so that a deflecting current modulated in amplitude by the correction signals is generated in a deflecting coil 12. As a result, a flat CRT can be easily corrected for a large pin-cushion distortion. |
