Inventor
UMEZAWA SATORU
JP11 patents
Patents
11 patentsUS6570080B1May 27, 2003
Method and system for supplying contents via communication network
YAMAHA CORP129 citations99
US6552254B2Apr 22, 2003
Method and system for supplying contents via communication network
YAMAHA CORP130 citations99
US7356557B2Apr 8, 2008
Content distribution system; content distribution method; distribution server, client terminal, and portable terminal used in the system; and computer readable recording medium on which is recorded a program for operating a computer used in the system
YAMAHA CORP70 citations98
US7113983B1Sep 26, 2006
System and method for downloading content files using a communication network and for automatically reproducing the content files in a predefined sequence
YAMAHA CORP99 citations98
US7720934B2May 18, 2010
Electronic musical apparatus, music contents distributing site, music contents processing method, music contents distributing method, music contents processing program, and music contents distributing program
YAMAHA CORP25 citations92
US5797752AAug 25, 1998
System and method for notifying a time limit and extension of used period of a karaoke apparatus
YAMAHA CORP34 citations92
US6515211B2Feb 4, 2003
Music performance assistance apparatus for indicating how to perform chord and computer program therefor
YAMAHA CORP49 citations91
US7991897B2Aug 2, 2011
Communication management system for performance data
YAMAHA CORP3 citations59
US7482526B2Jan 27, 2009
Technique for supplying unique ID to electronic musical apparatus
YAMAHA CORP3 citations59
US7720913B2May 18, 2010
Electronic musical apparatus and server computer
YAMAHA CORP0 citations41
US7432434B2Oct 7, 2008
Electronic musical apparatus and server computer
YAMAHA CORP0 citations41