发明授权
- 专利标题: Tone display method and apparatus for displaying image signal
- 专利标题(中): 用于显示图像信号的色调显示方法和装置
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申请号: US714409申请日: 1996-09-16
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公开(公告)号: US6100939A公开(公告)日: 2000-08-08
- 发明人: Akihiko Kougami , Masaji Ishigaki , Shigeo Mikoshiba , Takahiro Yamaguchi , Kohsaku Toda
- 申请人: Akihiko Kougami , Masaji Ishigaki , Shigeo Mikoshiba , Takahiro Yamaguchi , Kohsaku Toda
- 申请人地址: JPX Tokyo JPX Tokyo JPX Tokyo JPX Takeno-gun
- 专利权人: Hitachi, Ltd.,Shigeo Mikoshiba,Takhiro Yamaguchi,Kohsaku Toda
- 当前专利权人: Hitachi, Ltd.,Shigeo Mikoshiba,Takhiro Yamaguchi,Kohsaku Toda
- 当前专利权人地址: JPX Tokyo JPX Tokyo JPX Tokyo JPX Takeno-gun
- 优先权: JPX7-241297 19950920; JPX7-265156 19951013
- 主分类号: G09G3/288
- IPC分类号: G09G3/288 ; H04N3/14 ; H04N5/57 ; H04N5/66 ; H04N9/64
摘要:
A intra-field time division tone display method for dividing the time width in a field of a TV signal into a plurality of subfields in the pixel storing time direction and displaying the TV image by controlling the presence or absence of light emission of the subfields and an apparatus therefor, wherein there are at least two subfields (most significant subfields) whose luminant time widths are longest and almost equal and when it is assumed that the tones are displayed in the ascending order starting from the lowest level of tone in light emission of the subfields, the tone of a TV image signal is displayed under a rule that two or more light emissions are not started from the aforementioned at least two most significant subfields at the same time, accordingly the dynamic false contour noise of a moving image followed by movement of the viewing point can be reduced remarkably and a moving image of high image quality and high quality can be obtained.
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