Title:
【発明の名称】広帯域カラー画像信号送信装置および受信装置
Document Type and Number:
Japanese Patent JP3432821
Kind Code:
B2
Abstract:
In a case that a wide-band color picture signal provided for a high-definition television broadcasting is sub-sampled for narrow-band transmission, in comparison with a stationary picture signal which is applied with sub-sampling according to a sampling pattern circulated at every two frames, the color picture signal in motional picture regions, which is conventionally applied with line-offset sub-sampling at every field, has a lowered resolution. For improving the resolution concerned, color difference signals in motional picture regions are applied with inter-field offset sub-sampling together with band-limitation for preventing aliasing distortion accompanied with sub-sampling and signal processing including interpolation for reproduction, which are effected in a form completed at every frame. As for motional picture regions having small motion, a luminance signal is applied also with similar sub-sampling and similar signal processing. As a result, it is attained to improve the overall picture quality of the reproduced motional color picture by signal processing thus adapted for property of the color picture in motional picture regions.
Inventors:
Seiichi Goshi
和泉 ▲吉▼則
Masahide Naemura
Koichi Yamaguchi
和泉 ▲吉▼則
Masahide Naemura
Koichi Yamaguchi
Application Number:
JP51016092A
Publication Date:
August 04, 2003
Filing Date:
May 29, 1992
Export Citation:
Assignee:
Japan Broadcasting Corporation
International Classes:
H04N7/015; H04N7/12; H04N11/04; H04N11/24; (IPC1-7): H04N11/08; H04N11/24
Other References:
ＭＵＳＥ方式の開発，ＮＨＫ技術研究，日本，１９８７年，３９巻、２号，ｐ．１８−５３
Attorney, Agent or Firm:
Kosaku Sugimura