A method for generating and processing a broadcast signal according to an embodiment of the present invention includes encoding broadcast data for one or more broadcast services, encoding first level signaling information including information describing properties of the one or more broadcast services, encoding second level signaling information including information for scanning the one or more broadcast services and generating a broadcast signal including the broadcast data, the first level signaling information and the second level signaling information, wherein the first level signaling information includes user service description (USD) information describing service layer properties with respect to the broadcast services, wherein the USD information includes capability information specifying capabilities necessary to present broadcast content of the broadcast services.

Provided are a data structure including a header area, and a payload area comprising data, a method of generating the data structure, and extracting information from the data structure. At least one of the header area and the payload area includes at least one sub-area in which one or more signal fields are included. At least one signal field among the signal fields includes information for signalling presence or absence of one or more information fields located at least partly in the data structure, the one or more information fields corresponding to the one or more signal fields.

Provided are a data structure including a header area, and a payload area comprising data, a method of generating the data structure, and extracting information from the data structure. At least one of the header area and the payload area includes at least one sub-area in which one or more signal fields are included. At least one signal field among the signal fields includes information for signalling presence or absence of one or more information fields located at least partly in the data structure, the one or more information fields corresponding to the one or more signal fields.

A reception apparatus includes a demodulation circuit configured to demodulate packets obtained with respect to each of multiple PLPs included in a broadcast signal; and a processing circuit configured to process the packets demodulated by the demodulation circuit. The demodulation circuit and the processing circuit are connected with each other via a single interface or interfaces fewer than the number of the PLPs. The demodulation circuit adds identification information to a specific packet among the packets obtained with respect to each of the PLP, the identification information identifying the PLP to which each of the packets belongs. The processing circuit identifies the PLP to which belongs each of the packets input from the demodulation circuit via the single interface or the interfaces fewer than the number of the PLPs, based on the identification information obtained from the specific packet.

Methods, systems, and computer program products that provide streaming capabilities to audio input and output devices are disclosed. An audio processing device connects an upstream device to a downstream device. The upstream device is plugged into an input port of the audio processing device. The audio processing device intercepts a signal from the upstream device to the downstream device. The audio processing device converts the signal to digital data and streams the digital data to a server. The digital data can include metadata, e.g., an input gain. The audio processing device can adjust the input gain in response to instructions from the server. The audio processing device feeds a pass-through copy of the audio signal to an output port. A user can connect the downstream device in a usual signal chain into the output port of the audio processing device. The streaming does not affect the user's workflow.

Systems and methods are provided herein for automatically generating universal metadata for non-linear content when the non-linear content is determined to be viral. To this end, the systems and methods determine a first rate at which first users are consuming non-linear content from a first source. In response to determining that the first rate exceeds the threshold, the systems and methods determine a second source that from which second users are consuming the non-linear content, and a second rate at which the second users are consuming the non-linear content from the second source. In response to determining that the second rate exceeds the threshold, the systems and methods generate universal metadata for the non-linear content by automatically populating metadata fields of by scraping metadata fitting predefined criteria corresponding to the metadata fields from the first source and from the second source, and store the populated metadata fields to a database.

An apparatus and method for generating a broadcast signal frame using enhanced layer dummy values are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling time interleaver information corresponding to the time interleaver, the time interleaver uses one of time interleaver groups, and enhanced layer data corresponding to the one of the time interleaver groups include dummy values.

An apparatus and method for generating a broadcast signal frame using enhanced layer dummy values are disclosed. An apparatus for generating broadcast signal frame according to an embodiment of the present invention includes a combiner configured to generate a multiplexed signal by combining a core layer signal and an enhanced layer signal; a power normalizer configured to reduce the power of the multiplexed signal to a power level corresponding to the core layer signal; a time interleaver configured to generate a time-interleaved signal by performing interleaving that is applied to both the core layer signal and the enhanced layer signal; and a frame builder configured to generate a broadcast signal frame including a preamble for signaling time interleaver information corresponding to the time interleaver, the time interleaver uses one of time interleaver groups, and enhanced layer data corresponding to the one of the time interleaver groups include dummy values.

A method for transmitting a broadcast signal in a digital transmitter includes generating a link layer packet; generating the broadcast signal based on the link layer packet; and transmitting the broadcast signal. Further, the link layer packet includes at least one header and a payload, in which the at least one header includes a packet type field, and the packet type field represents a type of input data before encapsulation into the link layer packet. In addition, in response to the packet type field represents that the input data relates to a Movie Picture Experts Group-2 (MPEG-2) Transport Stream (TS) packet, a first header included in the link layer packet includes a deleted null packet indicator for representing the number of deleted null TS packets prior to the link layer packet.

An apparatus for transmitting broadcasting signal using transmitter identification scaled by 4-bit injection level code and method using the same are disclosed. An apparatus for transmitting broadcasting signal according to an embodiment of the present invention includes a waveform generator configured to generate a host broadcasting signal; a transmitter identification signal generator configured to generate a transmitter identification signal for identifying a transmitter, the transmitter identification signal scaled by an injection level code; and a combiner configured to inject the transmitter identification signal into the host broadcasting signal in a time domain so that the transmitter identification signal is transmitted synchronously with the host broadcasting signal.