Invention Grant
US07656563B2 Method for controlling the on/off function of an LED in a scanner
有权
用于控制扫描仪中的LED的开/关功能的方法
- Patent Title: Method for controlling the on/off function of an LED in a scanner
- Patent Title (中): 用于控制扫描仪中的LED的开/关功能的方法
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Application No.: US10825423Application Date: 2004-04-16
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Publication No.: US07656563B2Publication Date: 2010-02-02
- Inventor: Ta-Yi Lee , Jung-Chiao Chang , Jobs Pen , Sherry Wang , Vector Wang
- Applicant: Ta-Yi Lee , Jung-Chiao Chang , Jobs Pen , Sherry Wang , Vector Wang
- Applicant Address: TW Taipei
- Assignee: Lite-On Technology Corporation
- Current Assignee: Lite-On Technology Corporation
- Current Assignee Address: TW Taipei
- Agency: Rosenberg Klein & Lee
- Priority: TW93101232A 20040116
- Main IPC: H04N1/04
- IPC: H04N1/04
Abstract:
A method for controlling ON/OFF of LED in a scanner which replaces CCFL with LED as a light source is provided so as to solve the problem of excessively long warm-up time of CCFL in the prior art. Meanwhile, to achieve intermittent heat dissipation, LED is switched ON/OFF according to the frequency of the scanner receiving optical signals.
Public/Granted literature
- US20050157350A1 Method for controlling the on/off function of an LED in a scanner Public/Granted day:2005-07-21
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