发明名称 |
System and method for calibrating an ambient light sensor |
摘要 |
A system and a method for calibrating an ambient light sensor (ALS) are disclosed. The ALS, an adjustable resistor and a switch are located on a first surface of a printed circuit board (PCB), and the adjustable resistor and the switch are connected in series between an adjustable probe of the ALS and the ground. A resistor is connected between two pads located on a second surface of the PCB via two probes touching the pads. A controller connected to the PCB reads a light sensitivity of the ALS and calculates a calculated resistance value of the adjustable resistor by a formula "detected light sensitivity/resistance value of the resistor=objective light sensitivity/resistance value of the adjustable resistor", wherein the objective light sensitivity and the resistance value of the resistor are given.
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申请公布号 |
US8481917(B2) |
申请公布日期 |
2013.07.09 |
申请号 |
US20090612012 |
申请日期 |
2009.11.04 |
申请人 |
CHEN LI-MEI;CHEN MING-FU;LIN YI-HSUN;AMLINK (SHANGHAI) LTD.;AMPOWER TECHNOLOGY CO., LTD. |
发明人 |
CHEN LI-MEI;CHEN MING-FU;LIN YI-HSUN |
分类号 |
G01D18/00;G01J5/00 |
主分类号 |
G01D18/00 |
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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