发明名称 |
Digital scanner |
摘要 |
A digital scanner installed in an image reader of a digital facsimile apparatus, a digital copier or the like includes an analog-to-digital converter for quantizing a video signal which is produced by reading a document. A threshold voltage applied to the analog-to-digital converter from the outside is variable and specified from the outside.
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申请公布号 |
US4694353(A) |
申请公布日期 |
1987.09.15 |
申请号 |
US19850804541 |
申请日期 |
1985.12.04 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
SATO, TSUTOMU;MURAYAMA, NOBORU;SATO, KEY |
分类号 |
H04N1/40;H04N1/403;(IPC1-7):H04N1/40 |
主分类号 |
H04N1/40 |
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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