Patent 無線通信装置およびその処理方法 芝宏礼, 松井宗大, 赤羽和徳, 上原一浩 Application no. 特願2008-145855 Date applied Jun 3, 2008 Announcement no. 特開2009-296146 Date announced Dec 17, 2009 Patent/Registration no. 特許5063488 Date registered Aug 17, 2012 Date issued