Abstract: The present technology relates to a reception device, a transmission device, and a data processing method with which it becomes possible to operate digital television broadcasting more flexibly. A reception device receives a broadcast signal transmitted by frequency division multiplexing (FDM) and processes, on the basis of control information existence information that is information included in first control information, which is acquired from the broadcast signal and is control information in a physical layer, and that indicates existence/non-existence of second control information that is control information in an upper layer of the physical layer, the second control information transmitted in each hierarchy. The present technology can be applied, for example, to a receiver that can receive digital television broadcasting.

Abstract: The present technology relates to a receiving device, a transmitting device, and a data processing method, in which seamless reproduction can be performed at the time of switching a broadcast signal. A receiving device receives a plurality of broadcast signals, and selects a broadcast signal of a target from the plurality of broadcast signals, on the basis of a result of processing with respect to the broadcast signal, and thus, it is possible to perform seamless reproduction at the time of switching the broadcast signal. The present technology, for example, can be applied to a receiver which is capable of receiving digital television broadcast.

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: 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 data processing apparatus and a data processing method which can enhance multipath propagation resistance. When performing modulation processing on a physical layer frame including a preamble, which includes a modulation parameter, and one or more subframes, which include data, the data processing apparatus can set any modulation parameter for each subframe, and the modulation parameter has a relationship of Tui/Dxi?Tui+1/Dxi+1 in a case where an effective symbol length indicating a length of an effective symbol is Tui and an interval between pilot signals in a frequency direction is Dxi in an i-th (i is an integer equal to or greater than 0) subframe. The present technology can be applied to, for example, data transmission compliant to a broadcast standard such as ATSC 3.0.

Abstract: The present technology relates to a transmission device, a transmission method, a reception device, and a reception method that realize a process related to emergency warning information in DVB-T2 standard more promptly at a low power consumption. There is provided a transmission device including an emergency warning information acquisition unit configured to acquire emergency warning information, a content acquisition unit configured to acquire content, a transmission frame generation unit configured to generate a T2 frame including emergency warning notification information indicating that emergency warning information is being transmitted in P1 signaling or L1-pre signaling as a T2 frame, according to DVB-T2 standard, composed of a P1 symbol including P1 signaling, a P2 symbol including L1-pre signaling, and a symbol of data, and a transmission unit configured to transmit the T2 frame as a digital broadcast signal.

Abstract: The present technology relates to a data processing apparatus and a data processing method that permit enhancement of functional extensibility of apparatuses on a receiving side. A data processing apparatus at a preceding stage receives a digital broadcast signal, processes, of data acquired by a demodulation process of the digital broadcast signal, notification data to be notified to a data processing apparatus at a succeeding stage that performs a process succeeding to the demodulation process, transforms the notification data into a transportable format together with reception data acquired from the digital broadcast signal, and outputs the notification data to the data processing apparatus at the succeeding stage together with the reception data. The present technology is applicable, for example, to a system that includes a demodulation device and a system-on-chip.

Abstract: The present technique relates to a data processing apparatus and a data processing method each of which enables a burden imposed on processing on a reception side to be reduced. A data processing apparatus produces signaling containing a Null cell number exhibiting the number of Null cells of cells of a sub-frame included in a physical layer frame, and processes the signaling so as for the signaling to be contained in a preamble of the physical layer frame, thereby enabling a burden imposed on processing on a reception side to be reduced. The present technique, for example, can be applied to data transmission complying with the broadcasting standards such as ATSC3.0.

Abstract: The present technology relates to a receiving apparatus and a data processing method that can execute delay compensation with more simplified configuration. A receiving apparatus has a delay compensation block configured to delay, on the basis of time information included in a packet to be transmitted for each of a plurality of transmission paths including a broadcasting path, another packet to be transmitted by other transmission path than the reference transmission path with respect to a reference packet to be transmitted by a reference transmission path among the plurality of transmission paths to compensate a delay between the packets to be transmitted for each of the plurality of transmission paths. The present technology can be applied to television receivers having a channel bonding function, for example.

Abstract: This technology relates to a reception apparatus, a transmission apparatus, and a data processing method for configuring circuits on the receiving side at lower costs. The reception apparatus includes: a demodulation section configured to demodulate a packet included in each of multiple PLPs of a broadcast stream; and a processing section configured to process the packet demodulated by the demodulation section. The demodulation section and the processing section are interconnected via a single interface. The processing section identifies the PLP to which the packet input via the single interface from the demodulation section belongs on the basis of information for identifying the PLP to which the packet belongs. This technology applies, for example, to receivers supporting an IP transmission method.

Abstract: The present technology relates to a data processing apparatus and a data processing method that can reduce errors of time arising from accuracy of time information. The data processing apparatus generates signaling including time information having accuracy of time according to a frame length of a physical layer frame and processes the signaling so as to be included into a preamble of the physical layer frame to make it possible to reduce errors of time arising from time information. The present technology can be applied, for example, to a transmitter compatible with a broadcasting method of ATSC3.0 and so forth.

Abstract: The present technology relates to a transmission device, a receiving device, and a data processing method that enable bandwidth control over PLPs when one frequency band includes the plurality of PLPs. The transmission device determines the number of cells of a component to be transmitted by each of PLPs such that the number of cells in an entire physical layer frame including the plurality of PLPs matches a sum of the number of cells of the plurality of PLPs, and transmits a broadcast stream including the physical layer frame. The present technology can be applied to, for example, a system for transmitting a broadcast stream including a physical layer frame including a plurality of PLPs.

Abstract: A transmitter transmits payload data using Orthogonal Frequency Division Multiplexed (OFDM) symbols, the transmitter comprising frame builder circuitry configured to receive the payload data to be transmitted and to receive signalling information for use in detecting and recovering the payload data at a receiver, and to form the payload data into frames with the signalling information as a preamble to each of the frames for transmission. Modulator circuitry is configured to modulate one or more first OFDM symbols with the signalling information to form the preamble of each frame and to modulate one or more second OFDM symbols with the payload data to form post preamble waveform of each frame. Transmission circuitry is configured to transmit the one or more first OFDM symbols as a preamble and the second OFDM symbols as the post preamble waveform.

Abstract: The present technology relates to a signal processing device that enables TLV transmission, a signal processing method, and a program. The signal processing device includes: a demodulation processing unit that performs a demodulation process; a processing unit that performs a demux process; and a data signal line, a clock signal line, a sync signal line, and a valid signal line that are provided between the demodulation processing unit and the processing unit. A variable-length packet is transmitted between the demodulation processing unit and the processing unit through the data signal line, the clock signal line, the sync signal line, and the valid signal line. The variable-length packet is an Internet Protocol (IP) packet. The present technology can be applied to receivers that receive and process TLV streams.

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 reception apparatus and a data processing method that enable clock synchronization in a more suitable manner. The reception apparatus receives a digital broadcast signal of an IP transmission method that includes time information and a stream of content. The time information includes a seconds field and a nanoseconds field. The reception apparatus then generates a processing clock synchronized with the time information on the basis of the time information included in the digital broadcast signal, and processes the stream included in the digital broadcast signal on the basis of the processing clock. The present technology can be applied to, for example, television receivers conforming to the IP transmission method.

Abstract: [Object] The present technology relates to a reception apparatus, a reception method, a transmission apparatus, and a transmission method that enable more flexible operations to be performed. [Solving Means] A reception apparatus receives a content transmitted in an IP transmission system, acquires, based on first control information that is transmitted in a first layer in a protocol stack of the IP transmission system and includes information indicating whether second control information transmitted in a second layer higher than the first layer exists, the second control information, and controls operations of units that process the content based on the second control information. The present technology is applicable to television receivers supporting the IP transmission system.

Abstract: A transmitter transmits payload data using Orthogonal Frequency Division Multiplexed (OFDM) symbols, the transmitter comprising frame builder circuitry configured to receive the payload data to be transmitted and to receive signalling information for use in detecting and recovering the payload data at a receiver, and to form the payload data into frames with the signalling information as a preamble to each of the frames for transmission. Modulator circuitry is configured to modulate one or more first OFDM symbols with the signalling information to form the preamble of each frame and to modulate one or more second OFDM symbols with the payload data to form post preamble waveform of each frame. Transmission circuitry is configured to transmit the one or more first OFDM symbols as a preamble and the second OFDM symbols as the post preamble waveform.

Abstract: There is provided a transmission device including circuitry configured to generate a physical layer frame. A time information descriptor is included in a preamble of the physical layer frame. The time information descriptor includes a time information flag that indicates presence or absence of time information in the time information descriptor. The circuitry is configured to transmit the physical layer frame including the preamble and a payload. The time information indicates a time of a predetermined position in a stream of the physical layer frame.

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.