| 摘要 |
PROBLEM TO BE SOLVED: To provide the same piece of contents to all users by changing over the provision method if the sort of contents is identical when various pieces of contents are provided to different users. SOLUTION: When the invention is applied to the case where various pieces of audio contents selected among a plurality of sorts any by different users individually are fed to individual users through a plurality of headphones 7-10, it is determined whether or not all of the users substantially of receiving the contents receive the offer of the same piece of contents, and if yes, the headphones 7-10 are changed over to speakers 3-6, and the same contents are offered to different users simultaneously. COPYRIGHT: (C)2005,JPO&NCIPI |
