Invention Grant
- Patent Title: Estimating light output of a lamp in a scanner
- Patent Title (中): 估计扫描仪中的灯的光输出
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Application No.: US11217815Application Date: 2005-09-01
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Publication No.: US07911654B2Publication Date: 2011-03-22
- Inventor: Chengwu Cui , Larry L. Kiser
- Applicant: Chengwu Cui , Larry L. Kiser
- Applicant Address: US KY Lexington
- Assignee: Lexmark International, Inc.
- Current Assignee: Lexmark International, Inc.
- Current Assignee Address: US KY Lexington
- Main IPC: H04N1/00
- IPC: H04N1/00 ; H04N1/46
Abstract:
A method of estimating light output of a lamp in a scanner prior to the lamp being fully warmed-up. The method includes measuring a spectral characteristic of light emitted by a lamp in a scanner at a time t0 prior to the lamp being fully warmed-up and estimating the light output of the lamp at a time t1 based on the measured spectral characteristic, wherein t1 is greater than t0. A method of scanning, as well as a scanning apparatus is also provided.
Public/Granted literature
- US20070046930A1 Scanning apparatus and methods Public/Granted day:2007-03-01
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