A method and an apparatus for receiving broadcast signals thereof are disclosed. The apparatus for receiving broadcast signals, the apparatus comprises a receiver to receive the broadcast signals, a demodulator to demodulate the received broadcast signals by an OFDM (Orthogonal Frequency Division Multiplex) scheme, a frame parser to parse a signal frame from the demodulated broadcast signals, a time deinterleaver to time deinterleave data in the parsed signal frame and a decoder to decode the time deinterleaved data.

A media scheduling system includes a national scheduling service and subscribing stations. The scheduling service receives a local broadcast log generated by a local subscribing station. The local broadcast log includes media item identifiers. The local broadcast log is verified and approved by the scheduling service. Verification includes checking the local broadcast log for compliance with digital rights management (DRM) requirements. Approval is based, at least in part, on a trust level associated with the local subscribing station. A national log is generated, based on the local broadcast log, by generating a national clock including clock positions to be filled by items in the local broadcast log, and populating the clock positions in the national log using the media items identifiers included in the local broadcast log. Default editing restrictions for the national log are set, and the national log is transmitted to other local stations for broadcast.

A media scheduling system includes a national scheduling service and subscribing stations. The scheduling service receives a local broadcast log generated by a local subscribing station. The local broadcast log includes media item identifiers. The local broadcast log is verified and approved by the scheduling service. Verification includes checking the local broadcast log for compliance with digital rights management (DRM) requirements. Approval is based, at least in part, on a trust level associated with the local subscribing station. A national log is generated, based on the local broadcast log, by generating a national clock including clock positions to be filled by items in the local broadcast log, and populating the clock positions in the national log using the media items identifiers included in the local broadcast log. Default editing restrictions for the national log are set, and the national log is transmitted to other local stations for broadcast.

A subscription system includes a national subscription server capable of tracking which local stations subscribe to particular radio station music formats, for example AC middays, Top 40 afternoons, morning programs, or overnight Contemporary AC. A local music scheduler can query the subscription server for a log of nationally scheduled content to fill one or more dayparts of a local broadcast schedule. The subscription system can determine where to obtain the requested log, and provide the log to the local scheduler for insertion into a particular daypart of the local clock, while leaving the remaining dayparts free for local scheduling. Trusted subscribers can also be permitted to alter portions of log of nationally scheduled items. Inserting the log of nationally scheduled items into the local clock provides local awareness of both local and national media items scheduled for broadcast.

A subscription system includes a national subscription server capable of tracking which local stations subscribe to particular radio station music formats, for example AC middays, Top 40 afternoons, morning programs, or overnight Contemporary AC. A local music scheduler can query the subscription server for a log of nationally scheduled content to fill one or more dayparts of a local broadcast schedule. The subscription system can determine where to obtain the requested log, and provide the log to the local scheduler for insertion into a particular daypart of the local clock, while leaving the remaining dayparts free for local scheduling. Trusted subscribers can also be permitted to alter portions of log of nationally scheduled items. Inserting the log of nationally scheduled items into the local clock provides local awareness of both local and national media items scheduled for broadcast.

Local stations can generate their station broadcast logs based on a master broadcast log. In some cases, local stations are allowed to edit some positions, or slots, in their local logs, so that the local logs do not match the master log. This can create complexity when voice tracks for empty voice track slots are provided to the local stations, because voice tracks often reference the media in slots on either side of the empty voice track slots. An improved voice track editor indicates whether media items adjacent to an empty voice track slot in a master log match corresponding items in a station log.

Local stations can generate their station broadcast logs based on a master broadcast log. In some cases, local stations are allowed to edit some positions, or slots, in their local logs, so that the local logs do not match the master log. This can create complexity when voice tracks for empty voice track slots are provided to the local stations, because voice tracks often reference the media in slots on either side of the empty voice track slots. An improved voice track editor indicates whether media items adjacent to an empty voice track slot in a master log match corresponding items in a station log.

A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for transmitting broadcast signals, the apparatus comprises an encoder to encode service data, a mapper to map the encoded service data, a time interleaver to time interleave the mapped service data, wherein the time interleaving is performed depending on number of physical paths for the service data, a frame builder to build at least one signal frame including the time interleaved service data, a modulator to modulate data in the built at least one signal frame by an OFDM (Orthogonal Frequency Division Multiplex) scheme and a transmitter to transmit the broadcast signals having the modulated data.

A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for receiving broadcast signals, the apparatus comprises a receiver to receive the broadcast signals, a demodulator to demodulate the received broadcast signals by an OFDM (Orthogonal Frequency Division Multiplex) scheme, a frame parser to parse a signal frame from the demodulated broadcast signals, wherein the signal frame includes at least one service data, a time deinterleaver to time deinterleave each the service data, wherein the time deinterleaving is performed depending on a number of physical paths for each the service data, a damapper to demap the time deinterleaved data and a decoder to decode the demapped service data.

A method and an apparatus for transmitting broadcast signals thereof are disclosed. The apparatus for receiving broadcast signals, the apparatus comprises a receiver to receive the broadcast signals, a demodulator to demodulate the received broadcast signals by an OFDM (Orthogonal Frequency Division Multiplex) scheme, a frame parser to parse a signal frame from the demodulated broadcast signals, wherein the signal frame includes at least one service data, a time deinterleaver to time deinterleave each the service data, wherein the time deinterleaving is performed depending on a number of physical paths for each the service data, a damapper to demap the time deinterleaved data and a decoder to decode the demapped service data.