| 摘要 |
An apparatus of the present invention can achieve an improved image quality, irrespective of either a still image or a motion image to be obtained, when a scanning line number is converted. To this end, an interlaced scanning signal is input to a field delay circuit (13) and to a vertical highpass filter (21a), the output of the field delay circuit (13) is input to a field delay circuit (14) and to a vertical lowpass filter (22), and the output of the field delay circuit (14) is input to a vertical highpass filter (21b). The outputs of the vertical highpass filters (21a, 21b) are added together at an adder (24). The output of the adder (24) is added by an adder (23) to the output of the vertical lowpass filter (22) to create an interpolation signal. The interpolation signal and direct-type signal, being time-compressed, is coupled to a switch (18) where they are alternately selected. In this way, it is possible to create progressive scanning signals. <IMAGE> |
