| 摘要 |
PURPOSE:To attain the more precise observation of an object by mixing horizon tal and vertical deflection waveforms used for deflection scan with a prescribed ratio in correspondence with the rotary angle of a picture, generating a horizon tal mixed deflection waveform and a vertical mixed deflection waveform, and setting a rotary position in an appropriate position. CONSTITUTION:Outputs from a vertical deflection waveform generation circuit 1 and a horizontal deflection waveform generation circuit 2 are given to an adder 5 through variable resistors 3a and 3b, and to an adder 6 through variable resistors 4a and 4b, whereby both are mixed in the adders 5 and 6. The mixed ratio of the vertical deflection waveform and the horizontal deflection waveform by the variable resistors 3a and 3b, and 4a and 4b is appropriately adjusted based on the rotary angle theta of the picture. Namely, the variable resistors 3a and 3b, and the variable resistors 4a and 4b are adjusted in a state that the picture is projected on a monitor screen, and the objective picture rotation can be made while viewing the screen. |
