A receiving device, comprising: circuitry configured to: receive a digital broadcast signal according to an ATSC standard including an Internet protocol transport stream that has one or more services each having one or more components, wherein each component is information configuring a program, monitor an emergency alert table, EAT, transmitted through lower layer signaling, LLS, for providing an emergency notification service; acquire, in response to detecting that the EAT has been updated, the EAT, and control operations of modules corresponding to the emergency notification service based on the EAT, characterized in that the circuitry is further configured to: acquire a transmission scheme type of an Emergency Alert System, EAS, message from the EAT, acquire from the EAT, in response to the transmission scheme type indicating that an emergency information is transmitted through another designated component shared by the one or more services, first information that identifies a component type for the notification of emergency information, the component type being at least one of audio and video, and second information that identifies a service which provides the shared component, acquire the shared component, and output the shared component. circuitry configured to: receive a digital broadcast signal according to an ATSC standard including an Internet protocol transport stream that has one or more services each having one or more components, wherein each component is information configuring a program, monitor an emergency alert table, EAT, transmitted through lower layer signaling, LLS, for providing an emergency notification service; acquire, in response to detecting that the EAT has been updated, the EAT, and control operations of modules corresponding to the emergency notification service based on the EAT, receive a digital broadcast signal according to an ATSC standard including an Internet protocol transport stream that has one or more services each having one or more components, wherein each component is information configuring a program, monitor an emergency alert table, EAT, transmitted through lower layer signaling, LLS, for providing an emergency notification service; acquire, in response to detecting that the EAT has been updated, the EAT, and control operations of modules corresponding to the emergency notification service based on the EAT, characterized in that the circuitry is further configured to: acquire a transmission scheme type of an Emergency Alert System, EAS, message from the EAT, acquire from the EAT, in response to the transmission scheme type indicating that an emergency information is transmitted through another designated component shared by the one or more services, first information that identifies a component type for the notification of emergency information, the component type being at least one of audio and video, and second information that identifies a service which provides the shared component, acquire the shared component, and output the shared component. acquire a transmission scheme type of an Emergency Alert System, EAS, message from the EAT, acquire from the EAT, in response to the transmission scheme type indicating that an emergency information is transmitted through another designated component shared by the one or more services, first information that identifies a component type for the notification of emergency information, the component type being at least one of audio and video, and second information that identifies a service which provides the shared component, acquire the shared component, and output the shared component.