Patent ID: 7619688

Claim:
A display control device comprising: a related data acquisition unit acquiring related data of a predetermined channel from a broadcast signal; a supplementary screen generator generating a supplementary screen indicating an overview of a related data display screen on the basis of the related data; a related data storage unit storing the supplementary screen generated by the supplementary screen generator; an event detector detecting a predetermined event; a display controller controlling the supplementary screen stored in the related data storage unit to be displayed upon detecting the predetermined event by the event detector; a channel list storage unit storing a channel list of channels included in the broadcast signal, wherein the related data acquisition unit acquires related data according to the channel list stored in the channel list storage unit; and a program table storage unit storing a program table included in the broadcast signal, wherein, when acquiring related data according to the channel list stored in the channel list storage unit, if a predetermined time has reached to start a new program, the related data acquisition unit preferentially acquires related data of a channel containing the new program.