Mac 打呼噜

December 11, 2008 3:21 pm UTC | In Tech

昨天晚上睡不着觉转眼珠玩儿,发现 Mac 那个呼噜灯在视野里是间断的,不连成一条线,于是想到那个呼噜灯应该是脉冲发光的,通过不断调节占空比来调节(视)亮度模拟呼噜。其实早就应该想到的,对于 LED 发光来说,调节占空比显然比调节亮度本身要容易得多,而视觉暂留效果不用白不用。今天到实验室拿仪器测了一下果然如此,脉冲频率 153 Hz 左右。查了一下,苹果有一个相关的专利 US 6658577。

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  1. Orz……原来如此,以前还真没注意过那个不是连续的……

    Comment by Xin LI — December 11, 2008 4:44 pm UTC #

  2. orz…科学家伟大

    Comment by fishy — December 11, 2008 6:48 pm UTC #

  3. Orz

    Comment by Yifeng Gui — December 13, 2008 1:09 pm UTC #

  4. orz, 科学 A 董!

    Comment by kxn — December 13, 2008 5:34 pm UTC #

  5. nb!

    Comment by kisstar — December 18, 2008 12:54 am UTC #

  6. 太厉害了

    Comment by hu — March 25, 2009 7:23 pm UTC #

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