Abstract
In Improved or Enhanced TV receivers, image quality depends greatly on the characteristics of Y/C separation and on those of [interlace-progressive] scan conversion. These are achieved with motion-adaptive processing. Therefore, motion detection is essential for the improvement of image quality. Motion which is recognized theoretically as still areas in receivers due to interlace scan exists, but this problem essentially can't be resolved on IDTV. Motion can be detected as “motion”, if the signal of pro-scan cameras is directly used. These comeras are expected to be introduced to broadcasting stations in the near future.
The authors propose a scheme for EDTV. In the encoders for pro-scan cameras, based on the detection mentioned above, a systhetic motion signal, which is only slightly visible, is multiplexed on an image signal which might be mis-recognized in the receivers' motion detection. With this method, the authors obtain almost complete motion detection characteristics and hence good picture quality.
