A transmitting apparatus includes a frame generator configured to map data included in an input stream to at least one signal processing path to generate a frame, an information inserter configured to insert signaling information to a signaling region of the frame, and a transmitter configured to transmit the frame with the signaling information inserted therein. The signaling information including input stream synchronizer (ISSY) mode information, receiver buffer size information required according to the ISSY mode information, and time information representing a time between a P1 symbol of a preset frame for transmitting a user packet and an output of a preset bit of a first user packet of the user packet.

A transmitting apparatus includes a frame generator configured to map data included in an input stream to at least one signal processing path to generate a frame, an information inserter configured to insert signaling information to a signaling region of the frame, and a transmitter configured to transmit the frame with the signaling information inserted therein. The signaling information including input stream synchronizer (ISSY) mode information, receiver buffer size information required according to the ISSY mode information, and time information representing a time between a P1 symbol of a preset frame for transmitting a user packet and an output of a preset bit of a first user packet of the user packet.

A method and apparatus for decoding JVET video, including receiving a bitstream, and parsing said bitstream to identify a syntax element indicating an intra direction mode to use for generating at least one predictor. The intra direction mode is a first intra direction mode in a plurality of intra direction modes that includes at least one weighted intra direction mode that corresponds to a non-weighted intra direction mode. The syntax element may identify whether to use a non-weighted or weighted intra direction mode to generate the at least one predictor. Thus, the coding unit may be coded in accordance with the at least one generated predictor associated with the selected intra direction mode.

A method and apparatus for decoding JVET video, including receiving a bitstream, and parsing said bitstream to identify a syntax element indicating an intra direction mode to use for generating at least one predictor. The intra direction mode is a first intra direction mode in a plurality of intra direction modes that includes at least one weighted intra direction mode that corresponds to a non-weighted intra direction mode. The syntax element may identify whether to use a non-weighted or weighted intra direction mode to generate the at least one predictor. Thus, the coding unit may be coded in accordance with the at least one generated predictor associated with the selected intra direction mode.

A video modulator is presented. The modulator includes a video input interface, a video modulation circuit, a video output interface, a communication interface, and control circuitry. The video input interface is configured to receive a video signal to be modulated, the video modulation circuit is configured to modulate the video signal, and the video output interface is configured to transmit the modulated video signal. The communication interface is configured to receive a command via a communication link to control the video modulator. The control circuitry is configured to receive the command from the communication interface and to control at least one of the video input interface, the video modulation circuit, and the video output interface based on the command.

A video modulator is presented. The modulator includes a video input interface, a video modulation circuit, a video output interface, a communication interface, and control circuitry. The video input interface is configured to receive a video signal to be modulated, the video modulation circuit is configured to modulate the video signal, and the video output interface is configured to transmit the modulated video signal. The communication interface is configured to receive a command via a communication link to control the video modulator. The control circuitry is configured to receive the command from the communication interface and to control at least one of the video input interface, the video modulation circuit, and the video output interface based on the command.

A transmitting system and a method of transmitting digital broadcast signal are provided. The method of transmitting digital broadcasting signal in a transmitter includes multiplexing mobile data and main data, transmitting a transmission frame including the multiplexed mobile and main data, where a parade of data group is transmitted during slots, where each slot includes specified number of mobile data packets, a first scalable number of mobile data packets, and a second scalable number of main data packets, where the data group including a plurality of regions and the fifth region of the plurality of regions includes the first scalable number of mobile data packets, and where the data group is assigned to one of the slots in such a manner that slots of consecutive slot number carry data groups of inconsecutive group number.

A transmitting system and a method of transmitting digital broadcast signal are provided. The method of transmitting digital broadcasting signal in a transmitter includes multiplexing mobile data and main data, transmitting a transmission frame including the multiplexed mobile and main data, where a parade of data group is transmitted during slots, where each slot includes specified number of mobile data packets, a first scalable number of mobile data packets, and a second scalable number of main data packets, where the data group including a plurality of regions and the fifth region of the plurality of regions includes the first scalable number of mobile data packets, and where the data group is assigned to one of the slots in such a manner that slots of consecutive slot number carry data groups of inconsecutive group number.

The present disclosure aims to make it possible to transfer multicast packets at as high a rate as possible according to a state of a network, to perform high-quality and low-latency content distribution, and to perform stable multicast distribution on a network that is less likely to ensure a fixed available band such as a best-effort or wireless network.

The present disclosure is a content distribution system for converting part of communication for distribution into multicast communication, in which

a transmission-side edge server (UC/MC) applies Forward Error Correction to a multicast packet and transmits the multicast packet, a reception-side edge server (MC/UC) notifies the transmission-side edge server of information of packet loss of the received multicast packet, and

the transmission-side edge server (UC/MC) changes a transfer rate of a multicast packet to be transmitted based on the notified information of packet loss.

A base station (BS) for sharing downlink (DL) demodulation reference signals (DMRSs) between the DL data and the DL control signals comprises a storage device for storing instructions and a processing circuit coupled to the storage device. The processing circuit is configured to execute the instructions stored in the storage device. The instructions comprise transmitting a DL control signal on a first layer in a first time-frequency resource to the communication device; transmitting a DL data, associated with the DL control signal on a second layer in the first time-frequency resource and on the first layer and the second layer in a second time-frequency resource, to the communication device; and transmitting a set of DMRSs for the DL control signal and the DL data to the communication device.