Picture signal converting device

A picture signal converting device in which such frame of picture signal as corresponding to one frame of picture plane is constituted by a group of field picture signals corresponding to a plurality of field picture planes each one of which has a prescribed number of scanning lines, and a number of scanning lines of each field picture plane constituting said frame of picture plane is increased, comprising:

• (A) input means for consecutively entering such field picture signal as corresponding to each one of said field picture plane;
• (B) first interpolating signal forming means for forming a first interpolating signal by using such field picture signal as corresponding to other field picture plane than a first field picture plane entered by said input means;
• (C) second interpolating signal forming means for forming a second interpolating signal by using the first field picture signal corresponding to the first field picture plane entered by said input means;
• (D) difference information signal generating means for generating a difference information signal between a second field picture plane and a third field picture plane by using such second and third field picture signals as corresponding to the second and third field picture planes entered by said input means adjacently to the first field picture signal corresponding to said first field picture plane;
• (E) information compressing means for compressing the information of said difference information signal and producing a compressed difference information signal;
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• (F) interpolating picture signal forming means for forming an interpolating picture signal for said first field picture plane by using at least one of said first interpolating signal and said second interpolating signal depending on a state of said compressed difference information signal produced from said information compressing means.

A picture signal converting device in which such frame of picture signal as corresponding to one frame of picture plane is constituted with a group of field picture signals corresponding to a plurality of field picture planes each one of which has a prescribed number of scanning lines and a number of scanning lines of each field picture plane constituting said frame of picture plane is increased, comprising:

• (A) input means for consecutively entering such field picture signals as corresponding to each one of said field picture planes;
• (B) first interpolating signal forming means for forming a first interpolating signal by using such field picture signals as corresponding to other field picture plane than a first field picture signals entered by said input means;
• (C) second interpolating signal forming means for forming a second interpolating signal by using a first field picture signal corresponding to the first field picture plane entered by said input means;
• (D) motion detecting means for detecting an amount of movement of a picture between second and third field picture planes by using the second and third field picture signals which correspond to the second and third field picture planes and are entered by said input means adjacently to such first field picture signal as corresponding to said first field picture plane;
• and
• (E) interpolating picture signal forming means for forming an interpolating picture signal for said first field picture plane by using both of said first interpolating signal and said second interpolating signal depending on the detection result of said motion detecting means.