发明授权
- 专利标题： Device and method for determining black point
- 专利标题（中）： 用于确定黑点的装置和方法
-
申请号： US856390申请日： 1997-05-14
-
公开(公告)号： US6122002A公开(公告)日： 2000-09-19
- 发明人: Kiyotaka Ohara , Masaaki Hibino , Koji Kobayakawa , Masashi Ueda , Masaaki Hori , Yasunari Yoshida
- 申请人： Kiyotaka Ohara , Masaaki Hibino , Koji Kobayakawa , Masashi Ueda , Masaaki Hori , Yasunari Yoshida
- 申请人地址： JPX Nagoya
- 专利权人： Brother Kogyo Kabushiki Kaisha
- 当前专利权人： Brother Kogyo Kabushiki Kaisha
- 当前专利权人地址： JPX Nagoya
- 优先权： JPX8-121836 19960516
- 主分类号： H04N17/02
- IPC分类号： H04N17/02 ; H04N17/04 ; H04N17/00 ; G09G5/10 ; H04N5/57
摘要：
The standard brightness region is displayed with input values of zero. The comparison brightness region is displayed with an input value which is variable in the range of 0 to 255. The standard brightness and comparison brightness regions are displayed next to each other in the display. The input value is changed from zero. A first black point is determined as an input value which causes the comparison brightness region to first appear distinguishable from the black regions of the standard brightness regions. Then, the input value is changed from 255. A second black point is determined as an input value which causes the comparison brightness region to first appear indistinguishable from the black regions of the standard brightness regions. Then, a black point is calculated as an average of the first and second black points.
公开/授权文献
- US5233778A Muzzle loading cleaning rod retriever 公开/授权日：1993-08-10
信息查询
