Abstract: A broadcasting receiver implements volume control by first software (OCAP application) for volume control obtained from outside or second software (receiver application) for volume control pre-installed. The broadcasting receiver determines whether the first software is obtained or not. When it is determined that the first software is obtained, the broadcasting receiver sends a volume control command which is received by a command receiver to the first software, and otherwise, sends the volume control command to the second software.

Abstract: A broadcasting receiver implements volume control by first software (OCAP application) for volume control obtained from outside or second software (receiver application) for volume control pre-installed. The broadcasting receiver determines whether the first software is obtained or not. When it is determined that the first software is obtained, the broadcasting receiver sends a volume control command which is received by a command receiver to the first software, and otherwise, sends the volume control command to the second software.

Abstract: When a broadcasting station transmits an application including an authentication key enabling use of a program recommendation engine or the like together with a program, a broadcast receiver identifies the application including the authentication key from other applications. When the application including the authentication key is received, the authentication key is extracted. When a CableCARD is inserted, an individual number included in the CableCARD is extracted. Authentication is performed using the authentication key and individual number, and the program recommendation engine is executed when it can be authenticated that execution of the program recommendation engine or the like is enabled.