Invention Grant
- Patent Title: Image reading apparatus, and dimming control method and line sensor layout method therefor
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Application No.: US10663481Application Date: 2003-09-15
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Publication No.: US07072083B2Publication Date: 2006-07-04
- Inventor: Hiroshi Sato , Hiroyoshi Maruyama , Ken Tanabe , Masashi Minami , Shigeo Yamagata , Mitsuru Kurita , Koji Arai , Tsutomu Utagawa , Koichi Ishimoto
- Applicant: Hiroshi Sato , Hiroyoshi Maruyama , Ken Tanabe , Masashi Minami , Shigeo Yamagata , Mitsuru Kurita , Koji Arai , Tsutomu Utagawa , Koichi Ishimoto
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Morgan & Finnegan, L.L.P.
- Priority: JP10-151184 19980601; JP10-200705 19980715; JP10-211021 19980727; JP10-215601 19980730
- Main IPC: H04N1/46
- IPC: H04N1/46 ; H04N1/04
Abstract:
In an image reading apparatus for reading an original image using a light source containing a plurality of color components, a control pulse for dimming the light source is generated by pulse-width modulation symmetrically with respect to a reference timing (for example, the central position in one storage time or the storage start timing) in one predetermined storage time of a line sensor.
Public/Granted literature
- US20040051918A1 Image reading apparatus, and dimming control method and line sensor layout method therefor Public/Granted day:2004-03-18
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