# US 9,521,652 B2 · Broadcast signal transmitting apparatus, broadcasting data using FEC and methods thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,652 B2 - Document ID: US9521652B2 - Status: Granted - Kind: B2 - Application number: 14/198,454 - Filed: 2014-03-05 - Published: 2014-07-03 - Granted: 2016-12-13 - Earliest claimed: 2010-11-23 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Hotaek Hong; Sangchul Moon; Woosuk Ko - Web page: https://patentgrep.com/patent/US9521652B2 ## CPC - H04W 72/30: Resource management for broadcast services - H04H 20/72: of terrestrial networks - H04L 1/0042: {Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape (H04L1/0067 takes precedence)} - H04L 1/0072: {Error control for data other than payload data, e.g. control data} - H04L 65/611: for multicast or broadcast (systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06) - H04L 65/70: Media network packetisation - H04W 28/06: Optimizing {the usage of the radio link}, e.g. header compression, information sizing {, discarding information (system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365)} - H04W 28/065: {using assembly or disassembly of packets} - H04L 69/04: Protocols for data compression, e.g. ROHC - H04L 2001/0093: {Point-to-multipoint} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04H: BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication aspects of broadcast systems H04N) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract Disclosed are a broadcast signal transmitting apparatus, a broadcast signal receiving apparatus, and a broadcast signal transceiving method in the broadcast signal transmitting and receiving apparatuses. The broadcast signal transmitting method comprises the steps of: compressing headers of data packets which are included in an Internet protocol (IP) stream identified by access information, wherein the compressed data packets include a first packet containing both static information and dynamic information in the header thereof, and a second packet containing dynamic information in the header thereof; splitting the static information from the header of the first packet and diverting the remaining part thereof into the second packet; outputting an IP stream, which includes the second packet, via a data physical layer pipe (PLP); outputting, via a common PLP, a common stream, which includes the static information of the header of the first packet split in the previous step, compression information and IP-PLP mapping information for linking the IP stream and the data PLP; generating a signal frame on the basis of the data from the data PLP and the data of the common PLP; and transmitting a broadcast signal which includes the signal frame. ## Claims ### Claim 1 A method of processing broadcast data in a transmitter, the method comprising: input processing at least one input stream to output one or multiple Physical Layer Pipes (PLPs) by an input processor, wherein each data packet of the at least one input stream has a header and a payload and the header is compressed; Forward Error Correction (FEC) encoding PLP data of the one or multiple PLPs for each PLP by an encoder; bit interleaving the FEC-encoded PLP data by a bit interleaver; time interleaving the bit-interleaved PLP data by a time interleaver; building a signal frame including the time-interleaved PLP data by a frame builder; inserting pilot data into the built signal frame by an inserter; and modulating the signal frame having the pilot data by a modulator, wherein the signal frame further includes signaling data, and wherein the signaling data include type information for indicating a type of the input stream. ### Claim 2 (depends on 1) The method of claim 1, wherein when the type information indicates that the input stream is an IP stream, the each data packet is equal to an Internet Protocol (IP) packet. ### Claim 3 (depends on 1) The method of claim 1, further comprising: frequency interleaving the time-interleaved PLP data. ### Claim 4 (depends on 1) The method of claim 1, wherein the signal frame further includes pilot data information related to pilot pattern information of the pilot data. ### Claim 5 A transmitter for processing broadcast data, the transmitter comprising: an input processor to process at least one input stream to output one or multiple Physical Layer Pipes (PLPs), wherein each data packet of the at least one input stream has a header and a payload and the header is compressed; an encoder to Forward Error Correction (FEC) encode PLP data of the one or multiple PLPs for each PLP; a bit interleaver to bit interleave the FEC-encoded PLP data; a time interleaver to time interleave the bit-interleaved PLP data; a frame builder to build a signal frame including the time-interleaved PLP data; an inserter to insert pilot data into the built signal frame; and a modulator to modulate the signal frame having the pilot data, wherein the signal frame further includes signaling data, and wherein the signaling data include type information for indicating a type of the input stream. ### Claim 6 (depends on 5) The transmitter of claim 5, when the type information indicates that the input stream is an IP stream, the each data packet is equal to an Internet Protocol (IP) packet. ### Claim 7 (depends on 5) The transmitter of claim 5, further comprising: a frequency interleaver to frequency interleave the time-interleaved PLP data. ### Claim 8 (depends on 5) The transmitter of claim 5, wherein the signal frame further includes pilot data information related to pilot pattern information of the pilot data.