https://qooah.com/2012/09/27/%e8%87%aa%e7%9b%b8%e6%ae%98%e6%ae%ba-lg-%e6%8e%a7%e5%91%8a-samsung-%e4%be%b5%e7%8a%af%e4%b8%83%e9%a0%85%e5%b0%88%e5%88%a9/