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US 2020/0287776 A1Published application
Method and apparatus for transmitting/receiving a broadcast signal
AssigneeLG Electronics Inc.
InventorsWoosuk KWON, Minsung KWAK, Kyoungsoo MOON
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Abstract
A method for transmitting a broadcast signal is disclosed. The method for transmitting a broadcast signal according to an embodiment of the present invention includes link layer processing IP/UDP data to output a link layer packet, and physical layer processing the link layer packet based on a PLP.
Claims20
A method for transmitting a signal in a digital transmitter, the method comprising:
- generating at least one link layer packet based on input data, wherein the input data relates to an Internet Protocol (IP) packet or a Moving Picture Experts Group (MPEG)-2 Transport Stream (TS),
- wherein the at least one link layer packet includes a payload, at least one of a base header, an additional header or an optional header having Sub-stream Identifier (SID) for indicating a sub-stream identifier for the at least one link layer packet;
- and
- transmitting the signal carrying the at least one link layer packet based on a Physical Layer Pipe (PLP),
- wherein the generating includes:
- compressing a header of the IP packet, and
- performing an adaptation function for the IP packet based on three adaptation modes,
- wherein the three adaptation modes includes:
- a first adaptation mode in which a first Initialization and Refresh (IR) packet, a first IR Dynamic (IR-DYN) packet and a first compressed packet are bypassed by an adaption module,
- a second adaptation mode in which context information of a second IR packet is extracted, and the second IR packet is converted into a second IR-DYN packet, and
- a third adaptation mode in which context information of a third IR packet is extracted, context information of a third IR-DYN packet is extracted, the third IR packet is converted into a second compressed packet, and the third IR-DYN packet is converted into a third compressed packet.
8 more elements
A digital transmitter for transmitting a signal, the digital transmitter comprising:
- a processor configured to generate at least one link layer packet based on input data, wherein the input data relates to an Internet Protocol (IP) packet or a Moving Picture Experts Group (MPEG)-2 Transport Stream (TS),
- wherein the at least one link layer packet includes a payload, at least one of a base header, an additional header or an optional header having Sub-stream Identifier (SID) for indicating a sub-stream identifier for the at least one link layer packet;
- and
- a transmitting module configured to transmit the signal carrying the at least one link layer packet based on a Physical Layer Pipe (PLP),
- wherein the processor is configured to:
- compress a header of the IP packet, and
- perform an adaptation function for the IP packet based on three adaptation modes,
- wherein the three adaptation modes includes:
- a first adaptation mode in which a first Initialization and Refresh (IR) packet, a first IR Dynamic (IR-DYN) packet and a first compressed packet are bypassed by an adaption module,
- a second adaptation mode in which context information of a second IR packet is extracted, and the second IR packet is converted into a second IR-DYN packet, and
- a third adaptation mode in which context information of a third IR packet is extracted, context information of a third IR-DYN packet is extracted, the third IR packet is converted into a second compressed packet, and the third IR-DYN packet is converted into a third compressed packet.
8 more elements
A method for receiving a signal in a digital receiver, the method comprising:
- receiving the signal carrying at least one link layer packet based on a Physical Layer Pipe (PLP);
- processing the at least one link layer packet, wherein the at least one link layer packet relates to an Internet Protocol (IP) packet or a Moving Picture Experts Group (MPEG)-2 Transport Stream (TS),
- wherein the at least one link layer packet includes a payload, at least one of a base header, an additional header or an optional header having Sub-stream Identifier (SID) for indicating a sub-stream identifier for the at least one link layer packet;
- and
- wherein the processing includes:
- starting a first decompression from a detected Initialization and Refresh (IR) packet in a first adaptation mode,
- starting a second decompression from a detected IR Dynamic (IR-DYN) packet in a second adaptation mode, and
- starting a third decompression with any compressed packet in a third adaption mode.
5 more elements
A digital receiver for receiving a signal, the digital transmitter comprising:
- a receiving module configured to receive the signal carrying at least one link layer packet based on a Physical Layer Pipe (PLP);
- a processor configured to process the at least one link layer packet, wherein the at least one link layer packet relates to an Internet Protocol (IP) packet or a Moving Picture Experts Group (MPEG)-2 Transport Stream (TS),
- wherein the at least one link layer packet includes a payload, at least one of a base header, an additional header or an optional header having Sub-stream Identifier (SID) for indicating a sub-stream identifier for the at least one link layer packet;
- and
- wherein the processor is configured to:
- start a first decompression from a detected Initialization and Refresh (IR) packet in a first adaptation mode,
- start a second decompression from a detected IR Dynamic (IR-DYN) packet in a second adaptation mode, and
- start a third decompression with any compressed packet in a third adaption mode.
5 more elements
Dependencies are inferred from the claim text.