| 摘要 |
<p>It is possible to use an information read system utilizing a mobile radio terminal at a location where radio waves do not reach and when re-reading the information, another communication is not needed. When reading information, firstly, it is checked whether the information to be read has been selected to be displayed in the off-line state (S4101). If this information has been selected to be displayed in the off-line state (Yes in S4101), it is checked whether the data on the information is present in a cache memory (S4102). Here, if the communication is impossible (No in S4103), a message telling that communication was unsuccessful is displayed and the information remaining in the cache memory is displayed on the screen (S4104). When communication is enabled (Yes in step S4103), the information update state in the host is detected. If the information in the host has been updated, the information is displayed on the screen and if no updating has been performed, the information remaining in the cache memory is displayed on the screen (S4104, S4109).</p> |
