Information distribution service system based on predicted changes in location of mobile information terminal
US7200394B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2003 |
| Grant date | Apr 3, 2007 |
| Priority date | — |
| Expiry date | Apr 17, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/329
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In an information distribution service system comprising a plurality of mobile information terminals, a computer system and a plurality of information-provider terminals, the computer system is provided with a user-information database for registration information categories provided for the mobile information terminals' users each serving as a recipient of an information distribution service rendered by the information distribution service system, an information-provider database for registering locations of the information-provider terminals and information to be distributed by the information-provider terminals as notifications, and a location management unit provided for the purpose of inferring changes in location of each mobile information terminal in a time series by using an inference formula provided in advance for predicting the particular mobile information terminal's moving direction and location on the basis of information on locations of the particular mobile information terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.