Patent ID: 8023796

Claim:
A video signal producing system, comprising: an imager including an imaging portion capable of imaging progressive imaging signals at various frame rates and outputting a progressive imaging signal having a frame rate “F 0 ” which is any one selected from the various frame rates by a frame rate information, a frame rate information input portion for inputting the frame rate information indicative of the frame rate “F 0 ” and a frame rate converter for converting the progressive imaging signal having the frame rate “F 0 ”, into a video signal having a first fixed predetermined frame rate “F 1 ” equal to a maximum value of the various frame rates; a recorder for recording, at the first fixed predetermined frame rate “F 1 ”, the video signal converted by the frame rate converter; and a reproducer for reproducing the video signal recorded by the recorder so as to output the video signal at a second predetermined frame rate “F 2 ” which is one of the various frame rates, excepting the maximum value and a minimum value of the various frame rates; wherein the imager outputs, in addition to the converted video signal, the frame rate information; wherein the recorder records the converted video signal and the frame rate information outputted by the imager; wherein the reproducer reproduces the frame rate information recorded by the recorder; and wherein by using the frame rate “F 0 ” indicated by the reproduced frame rate information, the video signal recorded by the recorder is selectively reproduced at a ratio of (F 0 /F 1 ) at such a speed that the reproduced video signal has the second predetermined frame rate “F 2 ” in order to obtain a (F 2 /F 0 )-fold slow motion video when F 2 is less than F 0 , and a (F 2 /F 0 )-fold high speed motion video when F 2 is more than F 0 .