| 摘要 |
PURPOSE:To improve quality of a picture by compressing a luminance signal and a color signal in the signals of a color television for 1/n the time, alternately selecting them, converting into a time series signal and converting into a television signal in which a line having a frame frequency n times the frame frequency of an input television signal is successively scanned. CONSTITUTION:A color television signal 401 i separated to a luminance signal 417, a first color signal 418 and a second color signal 419 by a brightness and color signal separating circuit 416. The signal 417 is further divided into a low frequency component 421 and a high frequency component 422 by a high frequency and low frequency separating circuit 420. The low frequency component 421 is converted into a television signal 415 carrying out no interlaced scanning by a converting circuit constituted by a 1 field delay circuit 402, 0.5 scanning line buffer memory circuits 403 and a switch circuit 414. The high frequency component 422 of the luminance signal goes to a converted luminance signal 425 carrying out no interlaced scanning through a buffer memory circuit 423 having a memory capacity for one scanning line and an adding circuit 426.
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