https://qooah.com/2012/05/24/%e8%98%8b%e6%9e%9c%e9%ab%98%e5%b1%a4%e8%88%87-samsung-%e6%9c%aa%e8%83%bd%e9%81%94%e6%88%90%e5%92%8c%e8%a7%a3%e5%8d%94%e8%ad%b0/