| 摘要 |
<P>PROBLEM TO BE SOLVED: To shorten an acquisition time when the update information of key information is acquired over a plurality of business entities. <P>SOLUTION: The broadcast receiving device 1 acquires the location and the iteration period of update information corresponding to the apparatus in the data stream of update information, and stores them in an EMM management unit 108. A scheduling unit 109 schedules the acquisition order and timing of update information for updating the key information about a plurality of entities so that the time required for updating the key information is shortened based on the location and the iteration period of update information stored in the EMM management unit 108. A tuner control unit 106 controls a tuner unit 100 so that the data stream of a broadcast wave is tuned in according to the schedule of the scheduling unit 109. <P>COPYRIGHT: (C)2010,JPO&INPIT |
