A transmitting device includes: a generator that generates an encoded stream by using rate control satisfying a determined definition of a receiving buffer model; and a transmitter that sequentially transmits a transmitting packet, and the receiving buffer model includes a first buffer that converts a packet into a first packet where the packet includes a packet header of a variable length, and the first packet includes a packet header of a fixed length of a decompressed header, a second buffer that converts the first packet into a second packet including a payload of a variable length, a third buffer that converts the second packet into a Network Abstraction Layer (NAL) unit, and a fourth buffer that outputs an access unit generated from a plurality of sequentially accumulated NAL units to a decoder at a timing of a decoding time corresponding to the access unit.

The present disclosure describes a reception apparatus that includes demodulation circuitry configured to obtain packets included in a plurality of PLPs (Physical Layer Pipes) of a broadcast stream, and processing circuitry configured to process the packets obtained by the demodulation circuitry. The demodulation circuitry and the processing circuitry are interconnected via a single interface. Each combination of an IP (Internet Protocol) address and a port number of an IP packet or a UDP (User Datagram Protocol) packet included in the plurality of PLPs is unique for each PLP in which the corresponding IP packet or the corresponding UDP packet is included. The processing circuitry is configured to identify a PLP in which one of the packets input via the single interface from the demodulation circuitry is included according to the combination of the IP address and the port number of the one of the packets.

A reception apparatus includes processing circuitry. The processing circuitry is configured to receive IP packets that include signaling information originating from an Advanced Television Systems Committee (ATSC) broadcast stream received by a tuner device, the broadcast stream including a plurality of physical layer pipes (PLPs), each PLP containing a plurality of ATSC link-layer protocol (ALP) packets. The processing circuitry is configured to extract the signaling information from the IP packets, the signaling information including a link mapping table (LMT) and at least one low level signaling (LLS) table. The LMT is identified based on a predetermined IP address and port designated to indicate the presence of the LMT. The processing circuitry is further configured to retrieve, based on the extracted LMT and extracted at least one LLS table, audio and visual content corresponding to a service associated with the broadcast stream.

By a transmission method according to one aspect of the present disclosure, in a broadcasting system that generates a first broadcasting signal and a second broadcasting signal by performing multi-antenna encoding on program data, and wirelessly transmits a first broadcasting signal and a second broadcasting signal, a first transmit station transmits the first broadcasting signal, a second transmit station transmits the second broadcasting signal, the first transmit station and the second transmit station transmit the first broadcasting signal and the second broadcasting signal to an overlapping area at an identical time using an overlapping frequency band, polarized wave transmitted from the first transmit station differs from polarized wave transmitted from the second transmit station, and arrangement of the first transmit station differs from arrangement of the second transmit station.

A transmitting device includes: a generator that generates an encoded stream by using rate control satisfying a determined definition of a receiving buffer model; and a transmitter that sequentially transmits a transmitting packet, and the receiving buffer model includes a first buffer that converts a packet into a first packet where the packet includes a packet header of a variable length, and the first packet includes a packet header of a fixed length of a decompressed header, a second buffer that converts the first packet into a second packet including a payload of a variable length, a third buffer that converts the second packet into a Network Abstraction Layer (NAL) unit, and a fourth buffer that outputs an access unit generated from a plurality of sequentially accumulated NAL units to a decoder at a timing of a decoding time corresponding to the access unit.

By a transmission method according to one aspect of the present disclosure, in a broadcasting system that generates a first broadcasting signal and a second broadcasting signal by performing multi-antenna encoding on program data, and wirelessly transmits a first broadcasting signal and a second broadcasting signal, a first transmit station transmits the first broadcasting signal, a second transmit station transmits the second broadcasting signal, the first transmit station and the second transmit station transmit the first broadcasting signal and the second broadcasting signal to an overlapping area at an identical time using an overlapping frequency band, polarized wave transmitted from the first transmit station differs from polarized wave transmitted from the second transmit station, and arrangement of the first transmit station differs from arrangement of the second transmit station.

The present technology relates to a signal processing apparatus and a signal processing method that enable to accurately specify a boundary between packets. A signal processing apparatus includes a block information acquisition unit which specifies a block length from a transmission parameter, attached to a block, of a multiplexed stream including the series of blocks, a packet information acquisition unit which analyzes the block and acquires a packet parameter, a pattern information acquisition unit which analyzes the block and acquires specific pattern position information, and a packet division unit which specifies a boundary between the packets included in the block on the basis of the block length, the packet parameter, and the specific pattern position information. The present technology is capable of being applied to, for example, a signal processing apparatus that processes a broadcast wave.

In an example, an audio, video, and voice communication (AVC) processor includes an audio and video (AV) port to receive audio and video (AV) signals and an audio and voice input/output (I/O) port to communicate with a voice transceiver. The control unit, coupled to the AVC processor, controls the AVC processor to select the received signals and enables the AVC processor to transmit the selected signals to a media and voice playing unit.

A transmission method includes: dividing a picture into a plurality of regions; generating a plurality of pieces of encoded data that respectively correspond to the plurality of regions by encoding the plurality of regions such that each of the plurality of regions can be decoded independently; packetizing the generated plurality of pieces of encoded data into a plurality of packets such that pieces of encoded data for different regions are not stored in a single packet; and transmitting the plurality of packets. By this, workload for generation of decoding target data is reduced.

A set-top box for changing channels and method for use of the same are disclosed. In one embodiment, the set-top box includes a network interface controller that is configured to receive a source internet protocol television signal, which includes two channels, from an external source and at least partially prepare the source internet protocol signal in order to forward the tuned signal to a television. The set-top box saves in a buffer the at least partially prepared second channel beginning at a recent periodic, sequential signal access point. In response to receiving a channel change instruction when the set-top box is forwarding the at least partially prepared first channel signal, the set-top box causes the television tuner to forward the at least partially prepared signal based on the second channel stored in the buffer beginning at the recent periodic, sequential signal access point.