| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of installed electronic shelf tag devices. SOLUTION: A server device 10 transmits commodity information related to commodities a1, a2, and positional relation information indicating positional relation between the electronic shelf tag device 30A and the commodities a1, a2 to the electronic shelf tag device 30A. The electronic shelf tag device 30A receives the positional relation information and the commodity information of the commodities a1, a2 from the server device 10, changes over between the positional relation information and the commodity information of the commodity a1, and the positional relation information and the commodity information of the commodity a2 each prescribed display time according to the received positional relation information and commodity information, and displays them. COPYRIGHT: (C)2010,JPO&INPIT |
