发明授权
US4992955A Apparatus for representing continuous tone and high contrast images on a
bilevel display
失效
用于在双层显示器上表示连续色调和高对比度图像的装置
- 专利标题： Apparatus for representing continuous tone and high contrast images on a bilevel display
- 专利标题（中）： 用于在双层显示器上表示连续色调和高对比度图像的装置
-
申请号： US261330申请日： 1988-10-24
-
公开(公告)号： US4992955A公开(公告)日： 1991-02-12
- 发明人: Shigeru Yabuuchi , Satoshi Yoshizawa , Masakazu Ejiri , Seiji Kashioka , Yasuo Kurosu , Hiroaki Aotsu
- 申请人： Shigeru Yabuuchi , Satoshi Yoshizawa , Masakazu Ejiri , Seiji Kashioka , Yasuo Kurosu , Hiroaki Aotsu
- 申请人地址： JPX Tokyo
- 专利权人： Hitzchi, Ltd.
- 当前专利权人： Hitzchi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX62-270199 19871028
- 主分类号： G06F3/048
- IPC分类号： G06F3/048 ; G06F3/14 ; G06T5/20 ; G09G5/02 ; G09G5/10 ; G09G5/14 ; G09G5/36 ; H04N1/387 ; H04N1/405
摘要：
A half tone display apparatus using a display apparatus of bilevel representation in white and black is provided. The apparatus includes a unit supplied with a multilevel image such as a color image, a device for detecting edges in characters, patterns and photographic images, a unit for deriving a level difference between pixels adjacent to the edge, and a control unit for forcibly displaying a pixel of the edge portion as a white or black pixel for emphasis provided that the level difference is not larger than a predetermined threshold and for applying dither conversion to other pixels.
公开/授权文献
- US5432974A Car washing machine 公开/授权日：1995-07-18
信息查询
