1. 1)H.-Y. Joo et.al: ISSCC2014 Technical Paper, pp.314-315(2016)
2. 2)http://pc.watch.impress.co.jp/docs/news/20150729_713996.html
3. 3)http://www.aist.go.jp/aist_j/press_release/pr2015/pr20150925_2/pr20150925_2.html
4. 4)http://www.fujitsu.com/jp/group/fsl/resources/news/press-releases/2016/0831.html
5. 5)http://pc.watch.impress.co.jp/docs/news/1033812.html