Abstract: The present technology relates to a receiving device, a receiving method, a signal processing device, and a signal processing method that enable presentation of emergency alert information more appropriately. Provided is a receiving device including: a receiving part that receives a broadcast signal; and a processing part that processes the broadcast signal that has been received, in which the receiving part instructs the processing part in a standby state to start on the basis of emergency alert start information included in the broadcast signal that has been received, and in a case of being instructed by the receiving part to start, the processing part controls presentation of emergency alert information on the basis of signaling including the emergency alert information acquired from the broadcast signal that has been received, and receiving setting information related to a receiving setting of the emergency alert information set by a user.

Abstract: A relay device operable to relay emergency information to a plurality of mobile terminals. The device includes: a receiver configured in use to receive a broadcast signal, the broadcast signal being in a first format and containing the emergency information; a transmitter configured in use to connect to the plurality of mobile terminals using a communication channel; and a processor configured in use to provide the emergency information received in the broadcast signal to the plurality of mobile terminals in a second format using the transmitter, wherein the second format is different to the first format.

Abstract: A method of communicating an emergency alert includes receiving, by a central content controller (CCC), audiovisual (AV) content from a plurality of sources, encoding the content, transmitting the encoded content to regional controllers (RCs) associated with respective market areas (MAs) for broadcasting over the air (OTA), determining existence of one or more alerts, for each existing alert, identifying recipients designated for receiving the alert and transmitting the alert to devices associated with the identified recipients over a network.

Abstract: The present invention is a system to manage interrupt notifications on an operating system based on the characteristics of content in which an end user is currently immersed or engaged. For example, relatively high bitrate video throughput is indicative of corresponding high information depth and more action occurring in the scene. For periods of high information depth, interrupt notifications are deferred until the information depth falls into a relative trough. Additional embodiments of the invention process scene transitions, technical cues, dialog and lyrics to release queued interrupt notification at optimal times. A vamping process is also provided when interrupt notification are released to keep the end user prescient to the background application in which they were engaged prior to the interrupt notification coming into focus.

Abstract: A device may be configured to parse a syntax element specifying the number of available languages within a presentation associated with an audio stream. A device may be configured to parse one or more syntax elements identifying each of the available languages and parse an accessibility syntax element for each language within the presentation.

Abstract: Methods, systems, and media for presenting notifications indicating recommended content are provided.

Abstract: A system and method for object location notification in a fire alarm system is disclosed. The fire alarm system includes a fire alarm panel and fire alarm devices deployed within a premises that capture audio and/or image information. The fire alarm panel generates alarm signals and provides notifications of the existence of objects of interest from the audio and/or image information captured by the fire alarm devices. In examples, the fire alarm devices include alarm notification devices that generate an audible and/or visible fire alarm to occupants of the premises such as sirens and strobe lights, and fire sensor devices such as flame sensor devices and smoke sensor devices that monitor for flame and smoke as the indications of fire, respectively. In one embodiment, an analytics system is integrated within the fire alarm devices that determines the existence of the objects of interest from the captured audio and/or image information.

Abstract: Disclosed are various embodiments for identifying and recommending events of interest in real-time media content. Video of a media content stream is analyzed to determine whether an event of interest is occurring in real-time. Upon determining that an event of interest is occurring in real-time, a user interface is generated that includes at least two concurrently visible options to begin viewing video content corresponding to the event of interest.

Abstract: Systems and methods are described herein for presenting additional information related to an emergency alert. A media guidance application may detect that a new emergency alert has been received. The media guidance application may then perform a search of various content sources (e.g., program listings, the Internet, etc.) for content related to the emergency alert. The media guidance application may then present the search results in a contextual menu enabling the user to access content of the search results. The media guidance application may also provide more options, such as, recording or pausing media content that the user was in the process of consuming when the emergency alert was generated, and an option to the user not to bring up the contextual menu again if the same emergency alert is repeated.

Abstract: A transmitter for transmitting payload data and emergency information using data symbols in a single-carrier or multi-carrier broadcast system includes a modulator configured to modulate one or more transmission symbols with signaling data for use in detecting and recovering the payload data at a receiver and to modulate one or more transmission symbols with the payload data. An emergency information receiver receives emergency information carrying information of an actual emergency. An emergency information embedder embeds emergency information into one or more transmission symbols, wherein the emergency information is embedded within a predetermined time period after its reception by using a resource used for carrying signaling data and/or payload data if no emergency information shall be transmitted. A transmission unit transmits the transmission symbols.

Abstract: The present technology relates to a receiving apparatus, a transmitting apparatus, and a data processing method which are capable of providing detailed information of emergency information that is to be announced in case of emergency. The receiving apparatus receives a digital broadcast signal, and performs a process with respect to an emergency information application for presenting detailed information of emergency information on the basis of control information that is included in the digital broadcast signal and that includes information about the detailed information of the emergency information which needs to be announced urgently. The present technology is applicable to a television receiver, for example.

Abstract: A companion device interoperating with a broadcast reception device for receiving a broadcast service, includes a communication device configured to connect the companion device with the broadcast reception device; and a controller configured to receive emergency alert information from the broadcast reception device, the emergency alert information including identifier information for the emergency alert information, category information of the emergency alert information, and priority information for the emergency alert information, wherein a value of the priority information represents one of 5 levels of priority of the emergency alert information, the 5 levels represents the priority from low priority to high priority, and in response to a change of the priority, the controller receives changed emergency alert information including changed priority information of which a value represents a level of the changed priority.

Abstract: The present invention provides a digital broadcast receiver capable of executing functions having higher added values. The broadcast receiver receives a broadcast wave of a digital broadcast service, controls an operation including activation and end of an application that is in cooperation with a broadcast program based on application-related information, and selects control relating to reactivation of the application based on a user's operation. If activation of the application is requested after the end of the application, the broadcast receiver controls the reactivation or non-reactivation of the application in accordance with the selection of control by the user.

Abstract: A notification control system includes a handheld computing device; alerts associated with platforms on the computing device, the alerts being associated with notices; a notification management platform accessible from the handheld computing device, and having a selection portal in communication with the platforms; and a settings portal in communication with the selection portal, the settings portal provides options associated with user manipulation of the platforms; a processor working with the notification management platform to perform the steps of: receive a user selection of platforms; and receive a user selection of one or more alerts associated with the one platform; the user selection of one or more alerts designates either activation or deactivation of the alert; the notification management platform provides for user control of the alerts.

Abstract: The present technology relates to a reception apparatus, a reception method, a transmission apparatus, and a transmission method that enable provision of an emergency warning service more suited to actual operation. Provided is a reception apparatus that includes a reception section and a demodulation section. The reception section receives a physical layer frame transported as a broadcast signal. The demodulation section demodulates physical layer signalling acquired from the physical layer frame and monitors whether or not emergency warning information has been transported on a basis of emergency warning notice information acquired as a result of the demodulation. In a case where the emergency warning notice information indicates that the emergency warning information has been transported, the reception apparatus starts up automatically. The present technology is applicable, for example, to a transport system for transporting a physical layer frame compliant with a DVB-T2 standard.

Abstract: The present technology relates to a reception apparatus, a reception method, a transmission apparatus, and a transmission method permitting provision of an emergency warning service more suited to actual operation. Provided is a reception apparatus including a reception section and a demodulation section. The reception section receives a physical layer frame transported as a broadcast signal on the basis of monitoring information that is included in upper layer signalling, signalling in a layer higher than a physical layer, and that is used to monitor a specific service. The demodulation section demodulates physical layer signalling acquired from the physical layer frame and monitors whether emergency warning information has been transported on the basis of emergency warning notice information acquired as a result of the demodulation.

Abstract: A method of synchronization control in a synchronization gateway equipment is proposed. The method includes: receiving first metadata relating to a first audiovisual content, the metadata having an audiovisual content identifier, a first TV broadcast channel identifier, and time-and-date information; obtaining an identifier of a user interactivity element from the audiovisual content identifier; obtaining time-and-date information for presentation of a user interactivity element from the received time-and-date information; and transmitting, in synchronized manner with the time-and-date information for presentation of the interactivity element, a request for presentation of the user interactivity element corresponding to the identifier of the user interactivity element, the request including the identifier of the user interactivity element.

Abstract: The present technology relates to a transmitting device, a transmitting method, a receiving device, and a receiving method, which are capable of improving immediacy and flexibility of an alert. A transmitting device generates transmission data in which an index associated with predetermined process-related information in a relevant table in which process-related information related to an output process of outputting an alert on a receiving side is registered in association with an index is included in data of a physical layer, the relevant table being included in data of a higher layer higher than the physical layer and supplied, and transmits the transmission data. The receiving device obtains a relevant table, receives transmission data, and acquires an index included in data of a physical layer from the transmission data.

Abstract: A method and cell broadcast center (CBC) system are described for issuing an emergency alert message containing at least one hyperlink corresponding to content stored on a web server. The operations performed by the CBC include receiving an emergency alert message. The emergency alert message includes a hyperlink to web content. The CBC processes the emergency alert message by: issuing a request to a web server for a content corresponding to the hyperlink, and issuing an emergency broadcast request to carrier networks. The emergency broadcast request includes both: the emergency alert message, and the content corresponding to the hyperlink. The issuing the emergency broadcast request, causes delivery of the content corresponding to the hyperlink to a browser cache on a user equipment without user selection of the hyperlink on the user equipment.

Abstract: A system for broadcasting that includes a watermark payload.

Abstract: The present invention provides a digital broadcast receiver capable of executing functions having higher added values. The broadcast receiver receives a broadcast wave of a digital broadcast service, controls an operation including activation and end of an application that is in cooperation with a broadcast program based on application-related information, and selects control relating to reactivation of the application based on a user's operation. If activation of the application is requested after the end of the application, the broadcast receiver controls the reactivation or non-reactivation of the application in accordance with the selection of control by the user.

Abstract: A Next Generation Broadcast Platform (NGBP) is disclosed that utilizes 5G software-defined networking (SDN) and network function virtualization (NFV) technologies. The NGBP is designed to enable a new paradigm for broadcasters, wherein the model of fixed wireless spectrum access granted only to the licensees of the spectrum is replaced by a flexible model in which licensed spectrum is pooled together and allocated dynamically to broadcast licensees as well as outside tenants. The NGBP is implemented using SDN/NFV technology, and includes a broadcast market exchange (BMX) entity that allocates the spectrum between tenants based on service level agreements (SLAs) with those users. The NGBP also includes an internet protocol (IP) core and a broadcast centralized radio access network (BC-RAN) which apply the major network functions to broadcaster content in accordance with the determinations of the BMX.

Abstract: A transmitter and a receiver of data frames and related methods are disclosed. The transmitter includes: a frame generator configured to generate a first frame comprising data to be transmitted; and a preamble inserter configured to insert a preamble into the first frame, wherein the preamble inserter is further configured to insert, in the preamble, emergency alert service (EAS) information related to a preset emergency alert event, and set an indicator in the frame to indicate whether the EAS information is inserted in the preamble. Accordingly, only important information related to the EAS is transmitted in the form of a preamble to achieve robust transmission, and L1 information of related data is directly transmitted to reduce power consumption.

Abstract: To provide more advanced emergency notification service. An emergency notification control unit controls operations of respective units corresponding to an emergency notification service based on an emergency notification control signal transmitted through a broadcast wave of digital broadcasting using an IP transmission scheme, and thus a more advanced emergency notification service can be provided in digital broadcasting using an IP transmission scheme. The present technology can be applied to, for example, a broadcasting system including a transmitter and a receiver.

Abstract: The present technology relates to a receiving apparatus, a transmitting apparatus, and a data processing method which are capable of providing detailed information of emergency information that is to be announced in case of emergency. The receiving apparatus receives a digital broadcast signal, and performs a process with respect to an emergency information application for presenting detailed information of emergency information on the basis of control information that is included in the digital broadcast signal and that includes information about the detailed information of the emergency information which needs to be announced urgently. The present technology is applicable to a television receiver, for example.

Abstract: A broadcast receiving apparatus may comprise: a broadcast interface for receiving a broadcast signal comprising an emergency alert message and signaling information indicating metadata for the emergency alert message; a control unit for generating an emergency alert multicast message comprising attributes of the emergency alert message on the basis of the broadcast signal; and a companion screen interface for transferring the emergency alert multicast message to at least one companion screen device in a multicast mode.

Abstract: A method for transmitting a broadcast signal is disclosed. The method for transmitting a broadcast signal according to an embodiment of the present invention includes performing delivery layer processing of a broadcast service data and signaling information with respect to the broadcast service data, performing UDP/IP encapsulation of a broadcast service data and signaling information with respect to the broadcast service data and performing physical layer processing of a broadcast service data and signaling information with respect to the broadcast service data.

Abstract: A broadcast receiving apparatus may comprise: a broadcast interface for receiving a broadcast signal comprising an emergency alert message and signaling information indicating metadata for the emergency alert message; a control unit for generating an emergency alert multicast message comprising attributes of the emergency alert message on the basis of the broadcast signal; and a companion screen interface for transferring the emergency alert multicast message to at least one companion screen device in a multicast mode.

Abstract: Transmission of emergency alert information using a broadcasting service in an appropriate manner is achieved. A transmitter 200 (broadcasting station) inserts a wake-up signal as signaling of emergency alert information, describes information including a scale (category), type, occurrence time, and occurrence position of disaster, and version information as a message of emergency alert information, and transmits the message using a packet structure of a physical layer. A simple and inexpensive receiver 300 equipped with only a receiving antenna for broadcasting and a demodulator can receive the message of emergency alert information. An evacuation direction and a map or route to a shelter can be displayed using digital signage or streetlights, and an evacuation route can be instructed using streetlights.

Abstract: An apparatus and a method are disclosed for tracking use of a specialized hardware component in symmetric multiprocessing computing device. A device includes a memory and one or more multi-core processors attached to a coherent memory bus. A proxy for a specialized hardware component (SHC) such as an accelerator, FPGA, or ASIC is placed in communication with the coherent memory bus. The proxy may be attached to another bus such as a peripheral component interconnect express (PCIe) bus. A tracker updates an allocated counting register with counts of events related to use of the SHC. When requested, information from the counting register is provided such as to an external device or client communicating with the multiprocessing computing device. The tracker may follow calls or messages to the SHC. The tracker may accumulate a count of message size or mode of use or use of certain functions of the SHC.

Abstract: The present technology relates to a transmission device, a transmission method, a reception device, and a reception method that realize a process related to emergency warning information in DVB-T2 standard more promptly at a low power consumption. There is provided a transmission device including an emergency warning information acquisition unit configured to acquire emergency warning information, a content acquisition unit configured to acquire content, a transmission frame generation unit configured to generate a T2 frame including emergency warning notification information indicating that emergency warning information is being transmitted in P1 signaling or L1-pre signaling as a T2 frame, according to DVB-T2 standard, composed of a P1 symbol including P1 signaling, a P2 symbol including L1-pre signaling, and a symbol of data, and a transmission unit configured to transmit the T2 frame as a digital broadcast signal.

Abstract: The present invention relates to a method for receiving urgent alarm contents through a broadcast system. According to an embodiment of the present invention, a method for receiving urgent alarm contents through a broadcast system includes the steps of: receiving a broadcast signal; parsing an urgent alarm table contained in the broadcast signal, the urgent alarm table containing an urgent alarm message and an urgent alarm contents transmission structure descriptor for signaling the information of the urgent alarm contents concerning the urgent alarm message, and the urgent alarm contents transmission structure descriptor containing the IP address of an IP datagram for transmitting the urgent alarm contents; receiving the IP datagram of the IP address; and decoding the IP datagram so as to reproduce the urgent alarm contents.

Abstract: An apparatus for processing a hybrid broadcast service, the apparatus comprising a reception module for receiving broadcast signals though a broadcast channel or contents through a broadband channel for the hybrid broadcast service, wherein the broadcast signals include data for the hybrid broadcast service and an EAM (Emergency Alert message) and a processor for receiving a request from a companion device and sending at least one of a content or continuous components or files or data or media timeline information of the EAM (Emergency Alert message) based on the request, wherein the continuous components or the files or the data are a part of the hybrid broadcast service which is currently selected.

Abstract: Aspects of the subject disclosure may include, for example, a device that performs operations including receiving user input associated with a group of emergency alert service messages, assigning a plurality of severity codes to the group of emergency alert service messages according to the user input, each of the plurality of severity codes indicating a presentation format, determining a first location of a mobile communication device, determining a second location of a premises of a user of the mobile communication device. The operations can also include, responsive to detecting a first emergency alert service message associated with the first location, determining a first severity code of the plurality of severity codes assigned to the first emergency alert service message and providing the first emergency alert service message to the mobile communication device for presentation in a first format according to the first severity code. Other embodiments are disclosed.

Abstract: Multicast expert system information dissemination systems and methods making use of artificial intelligence are provided. The systems and methods include a wireless device for receiving RF multicast information messages from a content provider wherein said information is descriptive of objects potentially of interest to users of the device. Received multicast messages may include information parameters about objects of potentially interest to the user. The wireless device also includes a knowledge base prestored in the wireless device descriptive of the user's level of interest in various objects. Artificial intelligence expert system control is used to evaluate a combination of the user's level of interest in the object information and distance from the user to the location where the object may be obtained. The artificial intelligence expert system derives a user advisory action index. In one embodiment the artificial intelligence may be implemented using fuzzy logic inference engine apparatus.

Abstract: An observation system includes: a power supply unit having a battery; a sensor unit which detects a state of a structure on the basis of electricity from the power supply unit; a charging unit which charges the battery from renewable energy; and a processing unit which processes sensing information in one observation mode of a plurality of observation modes including at least a first observation mode and a second observation mode in which at least one of a sensor capability of the sensor unit and a load of computational processing using the sensing information is higher than in the first observation mode. The processing unit sets an observation mode on the basis of information for disaster occurrence estimation.

Abstract: Systems and methods are provided herein for transmitting a portion of a media asset containing an object to a user. In many media assets, specific features appear at portions of a program that users find interesting. These features can be compared with a database of stored objects that commonly appear in media assets to determine the object corresponding to the feature. The system may store data related to the media asset containing the object and, if the user is not currently accessing the media asset, may transmit the data to the user's mobile device.

Abstract: An alert generation method and system. The method includes receiving by a computer processor, alert data indicating filters for specified alert types associated with possible future events. The computer processor receives monitor definition data and media generated audio/video data; compares the alert data to the media generated audio/video data; determines a first alert type matches first audio/video data of the media generated audio/video data; and determines that the first audio/video data comprises a primary event. The computer processor broadcasts the primary event.

Abstract: In the dynamic generation of video, a video service provider receives a video request from a video player over a data network. The video service provider matches the video request with a given video descriptor record of a plurality of video descriptor records. a video media file including a plurality of cue slots is generated according to the given video descriptor record using the video request. A plurality of video clip files in a video clip library is selected for the plurality of cue slots, and the plurality of video clip files are copied to the plurality of cue slots in the video media file. The video service provider then sends the video media file to the video player.

Abstract: The present invention relates to a method for receiving urgent alarm contents through a broadcast system. According to an embodiment of the present invention, a method for receiving urgent alarm contents through a broadcast system includes the steps of: receiving a broadcast signal; parsing an urgent alarm table contained in the broadcast signal, the urgent alarm table containing an urgent alarm message and an urgent alarm contents transmission structure descriptor for signaling the information of the urgent alarm contents concerning the urgent alarm message, and the urgent alarm contents transmission structure descriptor containing the IP address of an IP datagram for transmitting the urgent alarm contents; receiving the IP datagram of the IP address; and decoding the IP datagram so as to reproduce the urgent alarm contents.

Abstract: A reverse 911 can be sent to a TV communicating with the Internet. The TV is automatically turned on if it is off, and a viewer can acknowledge the reverse 911 using a TV remote control.

Abstract: Methods and apparatus for providing indications of received emergency alert messages to devices within a consumer premises are disclosed. In one embodiment, a consumer premise equipment (CPE) receiving one or more emergency alert messages from a content provider or managed network determines one or more alert responses for one or more devices of the consumer premise network. In one implementation, the responses are based at least in part on the received emergency alert messages themselves. The CPE issues one or more commands to one or more devices present within the consumer premises (which may be for example a home automation system), to indicate the one or more determined alert indication responses, such as auditory alert and visual alert by the one or more devices. Thus, users in the consumer premises may be made aware of an alert message outside of the typical means in which an alert is displayed, such as via a television.

Abstract: The present invention relates to a method for receiving urgent alarm contents through a broadcast system. According to an embodiment of the present invention, a method for receiving urgent alarm contents through a broadcast system includes the steps of: receiving a broadcast signal; parsing an urgent alarm table contained in the broadcast signal, the urgent alarm table containing an urgent alarm message and an urgent alarm contents transmission structure descriptor for signaling the information of the urgent alarm contents concerning the urgent alarm message, and the urgent alarm contents transmission structure descriptor containing the IP address of an IP datagram for transmitting the urgent alarm contents; receiving the IP datagram of the IP address; and decoding the IP datagram so as to reproduce the urgent alarm contents.

Abstract: A method, Internet protocol television (IPTV) enabled communication device, and computer program product for automatic message services are provided. A processor executes instructions from a memory. An input and output (I/O) device is for transmitting and receiving, respectively. A client application is stored in the memory and configured to provide the automatic message service. The client application receives input of a message to be presented at an appropriate time, receives input of an action associated with the message, receives input of a recipient for the message, and presents the message for display to the recipient at the appropriate time.

Abstract: Provided is a method for transmitting a broadcast signal, including: formatting input streams into multiple data pipes (DPs); encoding data of the multiple DPs for each DP; generating at least one signal frames by mapping the encoded data; and modulating data of the generated signal frame using an orthogonal frequency division multiplexing (OFDM) scheme and transmitting a broadcast signal comprising the modulated data of the signal frame, wherein the signal frame includes a preamble, a PLS (Physical Layer Signaling) and EAC (Emergency Alert Channel), the preamble and the PLS include EAC flag information indicating whether there exists EAC in the signal frame, and when the EAC flag information indicates that there exists EAC in the current frame, the PLS further comprises EAC length information, and when the EAC flag information indicates that there doesn't exist EAC in the current frame, the PLS further comprises control information related to EAC transmission.

Abstract: A system and method for providing awareness in a hospitality environment are presented. In one embodiment, a vertical and horizontal array of set-top boxes is provided and each set-top box includes an identification corresponding to the room in which the set-top box is placed. Each set-top box includes a wireless transceiver that periodically transmits an identification beacon that is received by a proximate wireless-enabled interactive device. The proximate wireless-enabled interactive device, in turn, broadcasts data packets including an indication of the strength of set-top box identification signals received. The broadcasts are received by a server via an array of wireless routers. The location of the proximate wireless-enabled interactive device is determined based on the signal strength information in the data packets.

Abstract: A system and method for providing awareness in a hospitality environment are presented. In one embodiment, a vertical and horizontal array of set-top boxes is provided and each set-top box includes an identification corresponding to the room in which the set-top box is placed. Each set-top box includes a wireless transceiver that periodically transmits an identification beacon that is received by a proximate wireless-enabled interactive device. The proximate wireless-enabled interactive device, in turn, broadcasts data packets including an indication of the strength of set-top box identification signals received. The broadcasts are received by a server via an array of wireless routers. The location of the proximate wireless-enabled interactive device is determined based on the signal strength information in the data packets.

Abstract: Public safety user equipment (PS UE) that establishes a first wireless communication channel over a primary network to at least one multimedia multicast or broadcast service management entity and establishes one or more alternative wireless communication channels over one or more alternative networks (310). The public safety user equipment receives at least one multimedia multicast or broadcast service message over the first wireless communication channel (320). Then, the PS UE extracts data contained in the multimedia multicast or broadcast service message and storing the data in a local cache (330). The PS UE receives a cache request from the one or more user equipment over one or more alternative wireless communication channels (340) and then the PS UE transmits the stored data to the one or more PS user equipment (350).

Abstract: A system and method for providing awareness in a hospitality environment are presented. In one embodiment, a vertical and horizontal array of set-top boxes is provided and each set-top box includes an identification corresponding to the room in which the set-top box is placed. Each set-top box includes a wireless transceiver that periodically transmits an identification beacon that is received by a proximate wireless-enabled interactive device. The proximate wireless-enabled interactive device, in turn, broadcasts data packets including an indication of the strength of set-top box identification signals received. The broadcasts are received by a server via an array of wireless routers. The location of the proximate wireless-enabled interactive device is determined based on the signal strength information in the data packets.

Abstract: A method, a base station, an application server and a mobile device for transmitting and receiving media content are disclosed. A transceiver 302 may receive a unicast transmission specification and a broadcast transmission specification for the media content. A processor 304 may determine if a broadcast transmission for the media content is available. The processor 304 may initiate a unicast reception mode to receive the media content based on the unicast transmission specification if the current broadcast transmission is not available. A memory 308 may store the broadcast transmission specification for later reception of the media content in a broadcast reception mode if the current broadcast transmission is not available.