发明名称 |
Pixel modulation circuit and recording apparatus using the same |
摘要 |
A pixel modulation circuit outputs a pulse signal having a pulse width corresponding to pixel data representing a gradation level of each pixel. The pixel modulation circuit comprises a first triangular pulse generating circuit for generating a periodic triangular pulse signal, a complement and antilog output circuit capable of outputting a level signal corresponding to both antilog and complement values of pixel data, and a comparison circuit for comparing the triangular pulse signal with the level signal.
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申请公布号 |
US5825939(A) |
申请公布日期 |
1998.10.20 |
申请号 |
US19960628001 |
申请日期 |
1996.04.04 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
KAWASAKI, SOMEI;ISEKI, MASAMI;EBATA, HIRONARI |
分类号 |
G06K15/12;(IPC1-7):G06K9/38 |
主分类号 |
G06K15/12 |
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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