发明名称 BROADCAST RECEIVING DEVICE, AND METHOD OF CONTROLLING THE SAME
摘要 <P>PROBLEM TO BE SOLVED: To reduce a time period when a program that a user intends to view and listen gets into to a nonvisible and inaudible state in a broadcast receiving device. <P>SOLUTION: The broadcast receiving device of limited reception type includes a determining means determining whether an encryption key corresponding to a channel that a selecting means is selecting is available; a control means controlling, when the determining means has determined that the key is not available, the selecting means to sequentially select channels listed on a channel screen, the determining means to perform determination and an output means to generate the channel screen of the form that a channel determined to be not available can be identified; and an acquisition means operating the selecting means to sequentially select the channels determined to be not available under the control of the control means to acquire a corresponding encryption key and acquiring first the channel which is being selected on the channel screen. <P>COPYRIGHT: (C)2010,JPO&INPIT
申请公布号 JP2010045456(A) 申请公布日期 2010.02.25
申请号 JP20080206391 申请日期 2008.08.08
申请人 CANON INC 发明人 MORIKAWA KENICHI
分类号 H04L9/08;H04L9/36;H04N7/167;H04N21/438;H04N21/4623 主分类号 H04L9/08
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