Inventor
ISHII NAOYA
JP3 patents
Patents
3 patentsUS6942060B2Sep 13, 2005
Portable information terminal device
NEC CORP10 citations70
US6973582B2Dec 6, 2005
Audio signal output device in which optical signals are not output when a plug is not connected to an S/PDIF output terminal
NEC CORP9 citations66
US6964318B2Nov 15, 2005
Portable information terminal device
NEC CORP3 citations59