Abstract:
The present technology relates to a transmission apparatus, a transmission method, a reception apparatus, and at reception method that enable a plurality of transport protocols to coexist.The transmission apparatus generates transport protocol selection information used, for selecting a transport protocol to be used in a specific service from a plurality of transport protocols conforming to a predetermined, standard, and transmits, together with the transport protocol selection information, a content provided by the specific service according to the transport protocol set in the transport protocol selection information. The present technology is applicable to, for example, IP packet broadcasting.
Abstract:
This technology relates to a transmission apparatus, a reception apparatus, and a data processing method for easily implementing circuits on the receiving side. There is provided a transmission apparatus including a processing section configured to process a stream with respect to each of multiple PLPs included in a broadcast signal, the stream being constituted by packets, the processing section further causing a header of each of the packets to include mapping information mapped to identification information identifying the PLP to which each of the packets belongs. This technology may be applied to data transmission methods such as the IP transmission method or the MPEG2-TS method, for example.
Abstract:
The present technology relates to a transmission apparatus, a transmission method, a reception apparatus, and a reception method that allow for reliable notification of a start position of a transport packet or a transport stream during encapsulation of the transport packet or the transport stream in an error correction block.The transmission apparatus generates an FEC block on the basis of an input packet or an input stream, generates an FEC frame on the basis of the FEC block, and sends the FEC frame. A header of the FEC block includes type identification information identifying a type of the input packet or the input stream, information detecting a header error, and a minimum fixed length header having start position information of the input packet or the input stream stored in a payload of the FEC frame. The present technology is applicable, for example, to data transport.
Abstract:
There is provided a reception apparatus including a first acquisition unit which acquires, preceding text format second signaling data to be transmitted in a lower-level layer than an IP layer in a hierarchy of a protocol of an IP transmission system and containing control information independent of a service identified by an IP address, binary format first signaling data containing a flag indicating whether the second signaling data exists in digital broadcast using the IP transmission system, a second acquisition unit which acquires the second signaling data on the basis of the first signaling data, and a control unit which controls operation of the units which perform various types of processing on the basis of the second signaling data. The present technology can be applied to, for example, a television receiver.
Abstract:
The present technology relates to a reception apparatus and a data processing method that permit efficient processing of time information.The reception apparatus receives a digital broadcasting signal based on an IP transport scheme, acquires time information from a physical layer frame transported in a physical layer of a protocol stack for the IP transport scheme, converts the acquired time information into the same data format as data provided in a payload of the physical layer frame, and outputs the converted time information to a processing section that performs a given process relating to an upper layer that is a layer higher than the physical layer. The present technology is applicable, for example, to a television receiver that supports an IP transport scheme.
Abstract:
The present technology relates to a transmission apparatus, a transmission method, a reception apparatus, and a reception method that efficiently broadcast IP packets to ensure a quick process. A transmission packet including the IP packet is transmitted and received. A header in the transmission packet is constituted of type information and length information. The type information expresses whether an IP header and a UDP header are compressed. The length information expresses a length of the transmission packet to transmit the IP packet including a UDP packet. A payload in the transmission packet is constituted of a destination IP address and a destination port number or a destination index made correspond to the destination IP address and the destination port number and a payload in the UDP packet. The present technology is, for example, applicable to the broadcast of the IP packets.
Abstract:
The present technology relates to a transmission apparatus, a transmission method, a reception apparatus, and a reception method that enable channel selection information and time information to be transmitted effectively.A transmission apparatus acquires channel selection information for selecting a service and time information used for synchronizations on a transmission side and a reception side, generates, as a physical layer frame constituted of a preamble and a data portion, the physical layer frame in which specific information including at least one of the channel selection information and the time information is arranged at a head of the data portion right after the preamble, and transmits the physical layer frame as digital broadcast signals. The present technology is applicable to IP packet broadcasting, for example.
Abstract:
Provided is a reception device configured to receive a broadcast signal on which emergency alert information is superimposed and send out an alert properly. The reception device is configured to include a tuner that tunes and receives a broadcast signal, a demodulator that demodulates a physical layer level of the broadcast signal, and an alert device that sends out an alert of audio, text display, or the like according to the emergency alert information superimposed on the physical layer of the broadcast signal. Since an activation time is short with a simple configuration, an alert is sent out immediately even from a standby state when the emergency alert information is detected. Also, power consumption is small. Thus, even when all of the reception devices in an area where an emergency alert is sent out are concurrently activated, power to be supplied is not short.
Abstract:
The present technology relates to a transmission device, a transmission method, a reception device, and a reception method that permit efficient transfer of time and other information.The transmission device generates a physical layer frame having preambles and a payload that includes, in the preamble, time information representing time of a given position in a stream of physical layer frames and transmits the physical layer frame. The reception device receives the physical layer frame and performs processes using time information. The present technology is applicable, for example, to IP packet broadcasting.
Abstract:
This technology relates to a reception apparatus and a data processing method for easily implementing circuits on the receiving side.There is provided a reception apparatus including: a demodulation section configured to demodulate packets obtained with respect to each of multiple PLPs included in a broadcast signal; and a processing section configured to process the packets demodulated by the demodulation section. The demodulation section and the processing section are connected with each other via a single interface or interfaces fewer than the number of the PLPs. The demodulation section 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 section identifies the PLP to which belongs each of the packets input from the demodulation section via the single interface or the interfaces fewer than the number of the PLPs, on the basis of the identification information obtained from the specific packet. This technology may be applied to television receivers, for example.