According to one aspect of the invention, there is provided a method for supporting a relay broadcast, comprising the steps of: acquiring real-time data containing videos or audios captured or recorded in real time by at least one device, and acquiring non-real-time data containing pre-stored videos or audios; according to an editing input from a user, extracting processed non-real-time data of the same format as the real-time data from the non-real-time data, and generating metadata related to editing of a relay broadcast content containing the real-time data and the processed non-real-time data; and transmitting the real-time data and the processed non-real-time data contained in the relay broadcast content and the metadata to another device or an external server.

According to one aspect of the invention, there is provided a method for supporting a relay broadcast, comprising the steps of: acquiring real-time data containing videos or audios captured or recorded in real time by at least one device, and acquiring non-real-time data containing pre-stored videos or audios; according to an editing input from a user, extracting processed non-real-time data of the same format as the real-time data from the non-real-time data, and generating metadata related to editing of a relay broadcast content containing the real-time data and the processed non-real-time data; and transmitting the real-time data and the processed non-real-time data contained in the relay broadcast content and the metadata to another device or an external server.

A method and system for physically interacting with a live broadcast stream is described. For example, in one embodiment, the users swipe or swing a mobile phone device to virtually swing and hit at a live pitch on a standard TV broadcast. The invention can also be used while present at the event.

A method and system for physically interacting with a live broadcast stream is described. For example, in one embodiment, the users swipe or swing a mobile phone device to virtually swing and hit at a live pitch on a standard TV broadcast. The invention can also be used while present at the event.

Embodiments are provided for syncing multiple electronic devices for collective audio playback. According to certain aspects, a master device connects (218) to a slave device via a wireless connection. The master device calculates (224) a network latency via a series of network latency pings with the slave device and sends (225) the network latency to the slave device. Further, the master devices sends (232) a portion of an audio file as well as a timing instruction including a system time to the slave device. The master device initiates (234) playback of the portion of the audio file and the slave devices initiates (236) playback of the portion of the audio file according to the timing instruction and a calculated system clock offset value.

Embodiments are provided for syncing multiple electronic devices for collective audio playback. According to certain aspects, a master device connects (218) to a slave device via a wireless connection. The master device calculates (224) a network latency via a series of network latency pings with the slave device and sends (225) the network latency to the slave device. Further, the master devices sends (232) a portion of an audio file as well as a timing instruction including a system time to the slave device. The master device initiates (234) playback of the portion of the audio file and the slave devices initiates (236) playback of the portion of the audio file according to the timing instruction and a calculated system clock offset value.

Embodiments are provided for syncing multiple electronic devices for collective audio playback. According to certain aspects, a master device connects (218) to a slave device via a wireless connection. The master device calculates (224) a network latency via a series of network latency pings with the slave device and sends (225) the network latency to the slave device. Further, the master devices sends (232) a portion of an audio file as well as a timing instruction including a system time to the slave device. The master device initiates (234) playback of the portion of the audio file and the slave devices initiates (236) playback of the portion of the audio file according to the timing instruction and a calculated system clock offset value.

Embodiments are provided for syncing multiple electronic devices for collective audio playback. According to certain aspects, a master device connects (218) to a slave device via a wireless connection. The master device calculates (224) a network latency via a series of network latency pings with the slave device and sends (225) the network latency to the slave device. Further, the master devices sends (232) a portion of an audio file as well as a timing instruction including a system time to the slave device. The master device initiates (234) playback of the portion of the audio file and the slave devices initiates (236) playback of the portion of the audio file according to the timing instruction and a calculated system clock offset value.

Provided is a broadcast receiving device receiving a broadcast service interoperating with a companion device. The broadcast receiving device includes: an IP communication unit configured to establish a pairing session with the companion device; a broadcast communication unit configured to receive an emergency alert message including an emergency alert alerting a disaster situation on the basis of the broadcast service; and a control unit configured to transmit information on the emergency alert message to the companion device.

Provided is a broadcast receiving device receiving a broadcast service interoperating with a companion device. The broadcast receiving device includes: an IP communication unit configured to establish a pairing session with the companion device; a broadcast communication unit configured to receive an emergency alert message including an emergency alert alerting a disaster situation on the basis of the broadcast service; and a control unit configured to transmit information on the emergency alert message to the companion device.