PURPOSE: An earphone is provided to finely control sound volume as a user wants. CONSTITUTION: Sound volume of an audio system is adjusted according to a user's inclination, and secondarily being adjusted one more time by using a fine volume control device attached to an earphone.
申请公布号
KR20130109885(A)
申请公布日期
2013.10.08
申请号
KR20120032005
申请日期
2012.03.28
申请人
HAN, JEIONG HYE;JI, HO JAE;KIM, KOUNG JEA;JANG, KANG HOON
发明人
HAN, JEIONG HYE;JI, HO JAE;KIM, KOUNG JEA;JANG, KANG HOON