发明名称 |
Halftone processing method for digital facsmile apparatus |
摘要 |
A halftone processing method for a digital facsimile apparatus utilizing the dither method is disclosed which permits a threshold level to be changed at every desired number of picture elements in the horizontal scan direction. The change of the threshold level may occur selectively at every other picture element, every two picture elements every three picture elements and every four picture elements.
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申请公布号 |
US4485408(A) |
申请公布日期 |
1984.11.27 |
申请号 |
US19820395779 |
申请日期 |
1982.07.07 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
KAMIZYO, EIJI;MURAYAMA, NOBORU |
分类号 |
H04N1/405;(IPC1-7):H04N1/40 |
主分类号 |
H04N1/405 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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