发明名称 |
Image scanner and image scanning method |
摘要 |
In a high-speed image scanner, a driving method is proposed which needs no timing adjustment between the sensor driving pulse and the motor drive pulse required when the motor shifts from an accelerated state to a constant-speed state. The period of the sensor driving pulse is selected to be equal to or 1/N (N=integer) of that of the motor drive pulse at the time of constant-speed operation, and the phases of the sensor driving pulse and motor drive pulse are controlled independently of each other. Thus, even though the sensor driving pulse and the motor drive pulse are out of good timing, each line of the image can be surely read.
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申请公布号 |
US5473445(A) |
申请公布日期 |
1995.12.05 |
申请号 |
US19930077115 |
申请日期 |
1993.06.16 |
申请人 |
HITACHI, LTD. |
发明人 |
TAKEI, TORU;NAKAMURA, KOZO;NAKASHIMA, KEISUKE;YAMAMOTO, KAGEHIRO;KOZIMA, YASUYUKI |
分类号 |
H04N1/19;H04N1/04;H04N1/047;H04N1/12;H04N1/193;(IPC1-7):H04N1/04;H04N1/36 |
主分类号 |
H04N1/19 |
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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