Patent ID: 8396217

Claim:
A broadcast receiving apparatus, comprising: a controller to receive a broadcast program selection signal corresponding to a selected broadcast program, to control a receiver to be tuned to a channel broadcast signal based on the selected broadcast program, and to determine whether a first descrambling control information corresponding to the selected broadcast program is stored in response to receiving the broadcast program selection signal; and a descrambler to descramble broadcast data according to at least one of the first descrambling control information and a second descrambling control information, the broadcast data corresponding to the selected broadcast program; wherein, in response to a determination that the first descrambling control information corresponding to the selected broadcast program is stored, the controller is configured to: control the descrambler to descramble the broadcast data corresponding to the selected broadcast program according to the stored first descrambling control information; generate second descrambling control information corresponding to the selected broadcast program using program association table (PAT)/program map table (PMT) information included in the received channel broadcast signal; compare the stored first descrambling control information to the generated second descrambling control information; and update the first descrambling control information with the second descrambling control information; wherein the descrambler receives location information of audio data and video data associated with the selected broadcast program from the controller and the receiver, and wherein the controller is not the same as the receiver.