| 摘要 |
PURPOSE:To improve the resolution in comparison with encoding of a conventional square grid sampling signal by performing field offset sampling and encoding this sampled signal. CONSTITUTION:An analog picture signal is sampled in an AD converter 301 by the sampling frequency (fs) of field offset and is encoded by an encoder 302 and is digitally transmitted. On the reception side, the signal is decoded by a decoder 303 to reproduce the picture signal of field offset sampling. When a motion vector is used to subject this signal to motion adaptive interpolation by an interpolation filter 304, a square grid sampling signal having two-fold sampling frequency (2fs) is obtained. This signal is outputted through a DA converter 305. Thus, the resolution is improved in the case of transmission of both fields. |
