发明授权
- 专利标题： Image processing apparatus and method, and storage medium
- 专利标题（中）： 图像处理装置和方法以及存储介质
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申请号： US09645318申请日： 2000-08-25
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公开(公告)号： US06967745B1公开(公告)日： 2005-11-22
- 发明人: Yuji Konno , Hisashi Ishikawa , Hiroshi Tajika , Miyuki Fujita , Norihiro Kawatoko , Tetsuya Edamura , Tetsuhiro Maeda
- 申请人： Yuji Konno , Hisashi Ishikawa , Hiroshi Tajika , Miyuki Fujita , Norihiro Kawatoko , Tetsuya Edamura , Tetsuhiro Maeda
- 申请人地址： JP Tokyo
- 专利权人： Canon Kabushiki Kaisha
- 当前专利权人： Canon Kabushiki Kaisha
- 当前专利权人地址： JP Tokyo
- 代理机构： Fitzpatrick, Cella, Harper & Scinto
- 优先权： JP11-241718 19990827
- 主分类号： G06F3/12
- IPC分类号： G06F3/12 ; B41J2/52 ; G06T5/00 ; H04N1/41 ; H04N1/46 ; H04N1/64 ; G06F15/00 ; G03F3/08 ; G09G5/02
摘要：
When highly redundant information that expresses five tones using 4 bits is transferred to a printer in terms of a unit data length in data transfer, efficiency is very poor. Hence, multi-valued data is quantized to 5-valued data, which is output as a 4-bit code that can express five values. 4-bit codes for three bits are combined to be converted into an 8-bit code. The 8-bit codes are packed into data of a 16-bit unit, and the packed data is transferred to the printer.
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