Number. Name. Day.
2007-089200 Controller and PLL circuit Mar.29,2007
2006-137089 Coding & decoding system May.16,2006
2006-043407 Speaker and the judgment system Feb.21,2006
2005-302983 picture recording system Oct.18,2004
2004-303656 Picture conversion and its care card method Oct.19,2004
2002-330929 Data decoding and its disk storage Nov.14,2002
2001-087375 Picture compression method Mar.26,2001
2001-086955 Identification method at electrical current in human body and the input system by its current signal. Mar.26,2001