WO2013129781A1 - 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치 및 방법 - Google Patents
모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치 및 방법 Download PDFInfo
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- WO2013129781A1 WO2013129781A1 PCT/KR2013/000755 KR2013000755W WO2013129781A1 WO 2013129781 A1 WO2013129781 A1 WO 2013129781A1 KR 2013000755 W KR2013000755 W KR 2013000755W WO 2013129781 A1 WO2013129781 A1 WO 2013129781A1
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- emergency alert
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B27/00—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
- G08B27/006—Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations with transmission via telephone network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/71—Wireless systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/71—Wireless systems
- H04H20/72—Wireless systems of terrestrial networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
- H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4882—Data services, e.g. news ticker for displaying messages, e.g. warnings, reminders
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/81—Monomedia components thereof
- H04N21/8126—Monomedia components thereof involving additional data, e.g. news, sports, stocks, weather forecasts
- H04N21/814—Monomedia components thereof involving additional data, e.g. news, sports, stocks, weather forecasts comprising emergency warnings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
Definitions
- the present invention relates to a mobile broadcast system. More particularly, the present invention relates to an apparatus and a method for providing an emergency alert service through a mobile broadcasting system.
- An object of the present invention is to solve the above problems, and to provide an emergency alert service in a mobile broadcasting system.
- a method for providing an emergency alert service through a mobile broadcast includes generating an RS frame which is a two-dimensional data frame by encoding an ensemble Reed-Solomon (CR)-Cyclic Redundancy Check (CRC).
- the ensemble includes a service signaling channel including mobile data for a mobile broadcast service and access information for the mobile broadcast service, wherein the generated RS frame comprises a plurality of RS frames.
- Dividing into portions generating signaling data including a transmission parameter channel (TPC) for signaling transmission parameters of a mobile broadcast, and a fast information channel (FIC) including connection information between the ensemble and the broadcast service; Step, a portion of the signaling data and data including the RS frame portion Generating a group, and generating a mobile broadcast signal including the data group, wherein the service signaling channel includes a service map table including attribute information on a mobile service transmitted by the ensemble; Map table) and a mobile emergency alert table including information for transmitting an emergency alert service to a mobile broadcast, wherein the mobile emergency alert table includes an emergency alert message transmission type field indicating a manner in which the emergency alert message is transmitted. It is characterized by including.
- TPC transmission parameter channel
- FAC fast information channel
- the emergency alert message transmission type field indicates that the emergency alert message is included in the mobile emergency alert table and transmitted, or that the emergency alert message is transmitted through an IP datagram.
- the mobile emergency alert table further comprises an autotuning channel number field indicating a physical RF channel number for autotuning to a physical RF channel providing the emergency alert service.
- the mobile emergency alert table further comprises an emergency alert subject type field indicating a recipient of the emergency alert message.
- the mobile emergency alert table further comprises an emergency situation type field for identifying an emergency situation that is the target of the emergency alert.
- the mobile emergency alert table further comprises an NRT service identifier field identifying an NRT service that provides additional information related to the emergency alert message.
- the FIC is included in the data group and transmitted in the form of a plurality of FIC segments, wherein the FIC segment includes an FIC segment header and an FIC segment payload, and the FIC segment header performs a wake-up function. It is characterized in that it comprises a wake-up indicator field indicating whether the mobile broadcast receiver should automatically power on and provide an emergency alert message.
- the FIC comprises an FIC header and an FIC payload, wherein the FIC payload includes an EAT_ensemble_indicator field indicating whether the mobile emergency alert table is transmitted through a service signaling channel included in the ensemble. And a num_MH_services field indicating the number of mobile services transmitted through the ensemble, and an MH_service_signaling_channel_version field indicating version information of a service signaling channel included in the.
- the FIC header includes an EAS_wake_up_extended_info_Tag field identifying whether a byte of the extended FIC header includes information for a wake-up function and an EAS_wake_up_version_number field indicating version information of signaling of the wake-up.
- an apparatus for providing an emergency alert service through a mobile broadcast is an RS for generating an RS frame which is a two-dimensional data frame by encoding an ensemble RS (Reed-Solomon)-CRC (Cyclic Redundancy Check)
- a frame encoder wherein the ensemble comprises a service signaling channel comprising mobile data for a mobile broadcast service and access information for the mobile broadcast service; Signaling including an RS frame divider for splitting into RS frame portions, a Transmission Parameter Channel (TPC) for signaling transmission parameters of mobile broadcasts, and a Fast Information Channel (FIC) including connection information between the ensemble and the broadcast service
- TPC Transmission Parameter Channel
- FIC Fast Information Channel
- a signaling encoder for generating data, a portion and phase of the signaling data A data group formatter for generating a data group including an RS frame portion, and a broadcast signal generator for generating a mobile broadcast signal including the data group, wherein the service signaling channel is connected to a mobile service transmitted by the ensemble.
- FIG. 1 is a diagram illustrating a transmission system according to an embodiment of the present invention.
- FIG. 2 illustrates a signaling encoder according to an embodiment of the present invention.
- FIG. 3 is a diagram illustrating a structure of an ensemble according to an embodiment of the present invention.
- FIG. 4 is a diagram illustrating emergency alert data processing using a mobile emergency alert table according to an embodiment of the present invention.
- FIG. 5 is a diagram illustrating syntax of a mobile emergency alert table according to an embodiment of the present invention.
- FIG. 6 is a diagram illustrating the meaning according to each value of a type_of_responder field, a type_of_disciplines field, an EAS_message_transfer_type field, and an EAS_message_encoding_type field according to an embodiment of the present invention.
- FIG. 7 is a diagram illustrating syntax of an IP datagram when it is identified that an emergency alert message is transmitted through an IP datagram according to an embodiment of the present invention.
- FIG. 8 is a diagram illustrating syntax of an FIC segment header according to an embodiment of the present invention.
- FIG. 9 is a diagram illustrating syntax of an FIC chunk payload according to an embodiment of the present invention.
- FIG. 10 is a flowchart illustrating a data processing for performing a wake-up function according to an embodiment of the present invention.
- FIG. 11 is a diagram illustrating syntax of an FIC chunk header according to an embodiment of the present invention.
- FIG. 12 is a diagram illustrating a procedure for processing version information of wake-up signaling through extension of an FIC Chunk header according to an embodiment of the present invention.
- FIG. 13 is a diagram illustrating processing of automatic tuning of a wake-up operation to a critical emergency alert according to an embodiment of the present invention.
- FDT FLUTE File Delivery Table
- FIG. 15 is a diagram illustrating syntax of a TPC for wake-up signaling using a TPC according to another embodiment of the present invention.
- 16 is a diagram illustrating syntax of an FIC segment header according to another embodiment of the present invention.
- FIG. 17 is a diagram illustrating an ESG content fragment according to another embodiment of the present invention.
- FIG. 18 is a diagram illustrating an emergency alert system according to an embodiment of the present invention.
- 19 is a diagram illustrating a scene for providing additional information of an emergency alert message using an NRT according to an embodiment of the present invention.
- FIG. 20 is a diagram illustrating a scene for providing additional information of an emergency alert message using an NRT according to another embodiment of the present invention.
- 21 is a diagram illustrating a UI of a mobile emergency alert system according to an embodiment of the present invention.
- FIG. 22 is a diagram illustrating syntax of a mobile emergency alert table according to another embodiment of the present invention.
- FIG. 22 is a diagram illustrating syntax of a mobile emergency alert table according to another embodiment of the present invention.
- FIG. 23 is a diagram illustrating definitions of values of an event_urgency field, an event_severity field, an event_certainty field, and an EAS_message_type field according to another embodiment of the present invention.
- FIG. 23 is a diagram illustrating definitions of values of an event_urgency field, an event_severity field, an event_certainty field, and an EAS_message_type field according to another embodiment of the present invention.
- FIG. 24 is a diagram illustrating a mobile emergency alert table according to another embodiment of the present invention.
- 25 is a diagram illustrating a mobile emergency alert table according to another embodiment of the present invention.
- FIG. 26 is a diagram illustrating a descriptor for signaling an emergency alert service through extension of an SMT according to an embodiment of the present invention.
- FIG. 27 illustrates a descriptor for signaling an emergency alert service according to another embodiment of the present invention.
- 28 is a diagram illustrating signaling for providing an emergency alert service to one component according to an embodiment of the present invention.
- FIG. 29 is a diagram illustrating an emergency_alert_IP_datagram () descriptor for emergency alert service transmission according to an embodiment of the present invention.
- FIG. 30 is a diagram illustrating an emergency_alert_IP_datagram () descriptor for emergency alert service transmission according to another embodiment of the present invention.
- FIG. 31 is a view showing a content fragment of an ESG for emergency alert service according to another embodiment of the present invention.
- the main service data corresponds to data received by a fixed broadcast receiving system and may include audio / video data.
- the main service data may include high definition (HD) or standard definition (SD) audio / video data, and may include various kinds of data for broadcasting.
- Known data corresponds to data known in advance according to an appointment between the broadcast receiving system and the broadcast transmitting system.
- MH is a term corresponding to mobile / handheld, as opposed to a fixed type system.
- the MH service data (or mobile service data) may include any kind of data used in a mobile or portable system. Therefore, mobile service data according to an embodiment of the present invention is not limited to MH service data.
- Mobile service data may include information such as program executable files or stock information.
- Mobile service data may include audio / video data.
- the mobile service data may correspond to audio / video data having a lower resolution and a lower data rate when compared to the main service data.
- the MPEG-2 codec is used as the audio / video codec for the main service
- the MPEG-2 codec, MPEG-4 advanced video coding (AVC), or scalable video coding (AVC) for mobile services
- Higher image compression audio / video codecs such as scalable video coding (SVC) may be used.
- the mobile service data may include TPEG data (transport protocol expert group data) for real time traffic broadcasting.
- the mobile service data may include broadcast services / programs such as weather information service, traffic information service, stock information service, viewer participation quiz program, real time voting, interactive educational broadcast program, game service, or music program.
- a data group means a set of data packets transmitted through a data slot (or MH slot).
- the data group division represents a set of data group regions within one slot.
- the data group division may be divided into a primary data group division or a secondary data group division.
- the collection of primary data group divisions in an MH frame forms a primary parade, and the secondary data group divisions form a secondary parade.
- the parade (or MH parade) represents a set of data groups having the same FEC parameters.
- the parade may represent a set of data group divisions of data groups having the same data group type.
- RS frame (Reed-Solomon Frame) is a two-dimensional data frame.
- the payload of the RS frame is encoded by RS-CRC (Reed Solomon-Cyclic Redundancy Check) coding.
- An ensemble represents a set of RS frames to which the same FEC (Forward Error Correction) code is applied.
- each RS frame includes a compressed set of IP streams.
- the ensemble may include mobile service data channels for mobile service data and mobile service signaling for mobile services.
- the mobile service data for the mobile service may be transmitted through a part of a transport channel for transmitting the main service data to the main service.
- the mobile service data for the mobile service may be transmitted through the entire transmission channel used for the main service.
- data necessary for the mobile service may be referred to as mobile service data.
- mobile service data may include known data, signaling data, and / or RS parity data.
- the mobile service data may be classified into mobile service data of core mobile mode (CMM) and mobile service data of scalable full channel mobile mode (SFCMM).
- CMS core mobile mode
- SFCMM scalable full channel mobile mode
- the CMM is a broadcast mode for transmitting main service data and mobile service data together.
- the CMM may use at least 38 packets of the 156 packets in each slot to transmit main service data for the existing broadcast.
- the SFCMM is a broadcast mode for transmitting only mobile service data or transmitting main service data with a smaller amount of the main service data than the CMM.
- the SFCMM may use less than 38 packets of the 156 packets in each slot for the transmission of main service data.
- the SFCMM parade represents a parade that is backward compatible with existing CMM systems / decoders but is not recognized by existing CMM systems / decoders.
- the data group area represents a collection of data blocks or extended data blocks.
- the data group area represents a certain area within the data group.
- Each data group area may contain mobile service data for different purposes.
- Transmission Parameter Channel may be included in each data group, and transmits information about a data frame or data group to a receiver and provides a transmission parameter.
- FIC Fast information channel transmits cross layer information (or inter-layer information).
- the FIC may include connection information between the ensemble and the mobile service.
- FIG. 1 is a diagram illustrating a transmission system according to an embodiment of the present invention.
- a transmission system includes a packet adjustment unit 101, a pre-processor 102, a data frame encoder 103, a block processor; 104), signaling encoder 105, group formatter 106, packet formatter 107, packet multiplexer 108, post-processor 109, Modified data randomizer (110), systematic / non-systematic RS encoder (systematic / non-systematic RS encoder; 111), data interleaver (112), non-systematic RS encoder (non-systematic RS) encoder; 113, parity replacer 114, modified trellis encoder 115, synchronization multiplexer 116, pilot inserter 117, VSB demodulator ( VSB modulator: 118), and / or ex Include; (119 transmission unit) unit.
- the transmission system according to the present invention may further include a pre-equalizer filter 120.
- the packet adjustment unit 101 may compensate for a location difference that may occur between a service stream that includes a mobile service stream and a service stream that does not include a mobile service stream.
- the pre-processor 102 may serve to form mobile service data into a mobile service structure for transmitting mobile service data.
- the preprocessor 102 can perform additional FEC coding on the mobile service data.
- Preprocessor 102 can insert known data into a data group.
- the preprocessor 102 improves the stability of the transmission and reception performance of mobile service data in a mobile environment.
- the preprocessor 102 may include a data frame encoder 103, a block processor 104, a signaling encoder 105, a group formatter 106, and a packet formatter; 107), and / or a packet multiplexer 108.
- the data frame encoder 103 randomizes mobile service data and performs RS encoding and cyclic redundancy check (CRC) encoding on the mobile service data.
- the data frame encoder 103 generates an RS frame containing mobile service data.
- the data frame encoder 103 may include an RS frame divider (not shown) that separates an RS frame to generate an RS frame portion.
- a block processor 104 converts the RS frame portion into a serial concatenated convolutional coding (SCCC) block.
- the block processor 104 converts a byte of mobile service data included in the SCCC block into mobile service data in units of bits.
- the block processor 104 performs convolutional coding at 1/2, 1/3, or 1/4 rate on the mobile service data in units of bits. In this case, 1/2 rate means two bits are output when one bit is input, 1/3 rate means three bits are output when one bit is input, 1/4 Rate means that once one bit is entered, four bits are output.
- the output bits are included in the symbol.
- the block processor 104 performs interleaving on symbols that are convolutionally encoded and output.
- the block processor 104 converts the interleaved symbols into data in bytes.
- the block processor 104 converts the SCCC block into a data block.
- the signaling encoder 105 generates signaling information for signaling at the receiving side.
- the signaling encoder 105 performs FEC coding and Parallel Concatenated Convolutional Code (PCCC) encoding on the signaling information.
- the signaling information includes TPC data and / or FIC data.
- the group formatter 106 forms a data group containing mobile service data.
- Group formatter 106 inserts the FEC coded mobile service data into an interleaved data group.
- the group formatter 106 inserts initialization data bytes for initializing the memory of the signaling data modification trellis encoder 115, and / or known data strings (a set of contiguous known data) into the data group.
- Group formatter 106 inserts a location holder for main service data, a location holder for MPEG-2 header and / or a location holder for non-systematic RS parity into the data group.
- the group formatter 106 may insert dummy data to generate a group of data of a desired type.
- the group formatter 106 After inserting various kinds of data, the group formatter 106 performs de-interleaving on the data in the data group of the interleaved form. After deinterleaving is performed, the data group is output as a data group in the form before being interleaved.
- the data group generated in the group formatter 106 includes mobile service data corresponding to one RS frame portion.
- the packet formatter 107 converts the output data of the group formatter 106 into a Transport Stream (TS) packet.
- TS Transport Stream
- the TS packet may be referred to as a mobile service data packet.
- the packet formatter 107 outputs (118 + M) mobile service data packets for one data group. M is an integer of 38 or less here.
- the packet multiplexer 108 multiplexes a packet including mobile service data processed by the preprocessor 102 and a packet including main service data.
- the multiplexed packet contains (118 + M) mobile service data and L main service data packets.
- M is an integer of 0 or more and 38 or less, and the sum of M and L is 38.
- only the mobile service data is processed by the packet multiplexer 108.
- the post-processor 109 processes the mobile service data so that the mobile service data is backward compatible with the existing broadcasting system. In this process, main service data can be processed together.
- the post processor 109 may include a modified data randomizer 110, a systematic / non-systematic RS encoder 111, a data interleaver interleaver 112, a non-systematic RS encoder 113, a parity replacer 114, and / or a modified trellis encoder 115.
- the modified data randomizer 110 bypasses the mobile service data packet without performing randomization on the mobile service data packet.
- the revised data randomizer 110 performs rendering on the main service data packet.
- the modified data randomizer 110 may not perform the rendering process.
- the systematic / non-systematic RS encoder 111 performs systematic RS encoding on the main service data when the input data is a main service data packet.
- the systematic / non-systematic RS encoder 111 performs non-systematic RS encoding on the mobile service data when the input data is a mobile service data packet.
- Systematic / non-systematic RS parity generated by systematic / non-systematic RS encoding can be inserted at a predefined position in the data group.
- the systematic / non-systematic RS encoder 111 does not need to perform RS encoding for the main service data. In this case, the systematic / non-systematic RS encoder 111 may not generate non-systematic RS parity for backward compatibility.
- the data interleaver 112 performs interleaving on data including main service data and mobile service data.
- the non-systematic RS encoder 113 receives the memory value of the modified trellis encoder 115, Mobile service data is received from the data interleaver 112 to convert the initialization data of the mobile service data into a memory value.
- the non-systematic RS encoder 113 outputs the RS parity generated by performing non-systematic RS encoding on the changed mobile service data to the parity substituter 114.
- the parity substituent 114 receives the mobile service data from the data interleaver 112 and converts the non-systematic RS parity of the mobile service data into a non-systematic RS encoder. Replace with the non-systematic RS parity generated by 113.
- the packet multiplexed in the packet multiplexer 108 does not include the main service data packet, there is no need to include RS parity in the data group for backward compatibility. Accordingly, according to an embodiment of the present invention, in this case, the non-systematic RS encoder 113 and the parity substituent 114 do not perform the above-described operation, but perform an operation of bypassing the received data. Can be.
- a modified trellis encoder 115 performs trellis encoding on the output of the data interleaver 112. After trellis encoding, in order to output known data in the form promised by the broadcast transmitting side and the broadcasting receiving side, the memory included in the trellis encoder 115 needs to be initialized before starting trellis encoding. have.
- the above-described initialization operation may be started by the initialization data included in the data group.
- a synchronization multiplexer 116 inserts the field synchronization signal and the segment synchronization signal into the output data of the modified trellis encoder 115 and multiplexes these data.
- the pilot inserter 117 receives the multiplexed data at the synchronous multiplexer 116 and transmits the pilot signal used as a carrier phase for demodulation of the channel signal to the multiplexed data. Insert it.
- the VSB demodulator 118 performs VSB modulation to transmit broadcast data.
- a transmission unit 119 performs frequency up conversion on the modulated data and transmits the data on which the conversion has been performed.
- FIG. 2 illustrates a signaling encoder according to an embodiment of the present invention.
- the signaling encoder may include a first RS encoder 2100, a second RS encoder 2200, a block interleaver 2300, a multiplexer 2400, a signaling randomizer 2500, and / or a PCCC. Perform encoder 2600.
- the first RS encoder 2100 performs RS encoding on the TPC data.
- the second RS encoder 2200 performs RS encoding on the FIC data.
- the first RS encoder and the second RS encoder perform RS encoding at different rates. That is, the TPC data and the FIC data are RS encoded at different rates.
- the block interleaver 2300 performs block interleaving on RS encoded FIC data.
- Block interleaving is to interleave FIC data in blocks.
- the multiplexer 2400 multiplexes the RS encoded TPC data and the block interleaved FIC data.
- the signaling randomizer 2500 renders the multiplexed data.
- PCCC encoder 2600 PCCC encodes the rendered data.
- FIG. 3 is a diagram illustrating a structure of an ensemble according to an embodiment of the present invention.
- the ensemble transmits mobile service data constituting the mobile service.
- the ensemble may include a Service Signaling Channel (SSC) for signaling mobile services.
- SSC Service Signaling Channel
- the service signaling channel may be defined to be transmitted through a specific IP address and a UDP port. That is, the receiving side may obtain service signaling channel data by parsing data of the corresponding IP address and the UDP port.
- the service signaling channel includes a service map table (SMT) including attribute information on mobile services transmitted by an ensemble, and a guide access table including information on service guide data for mobile services.
- SMT service map table
- GAT Global System for Mobile communications
- CIT Cell Information Table
- Emergency Alert Table-MH Emergency Alert Table-MH; EAT-MH
- FIG. 4 is a diagram illustrating emergency alert data processing using a mobile emergency alert table according to an embodiment of the present invention.
- a Common Alerting Protocol (CAP) alert message may be compressed.
- a mobile receiver (M / H receiver) capable of identifying the mobile emergency alert table may extract a compressed CAP alert message.
- the mobile receiver may decompress the CAP alert message and quickly display the emergency alert message without referring to the SMT.
- the mobile emergency alert table may transmit NRT_service_id for an entry of an emergency alert message, and NRT_service_id indicates that additional content related to an emergency alert message is transmitted through a non-real-time (NRT) broadcast service.
- NRT non-real-time
- a broadcast receiver capable of receiving an NRT broadcast service may display an additional emergency alert message with reference to an SMT, a Service Guide (SG), and / or a FLUTE (File Delivery over Unidirectional Transport) session signaled for the NRT service. Can be.
- the number of repeated receptions of the mobile emergency alert table may vary depending on the importance of the emergency alert message.
- the emergency alert message of highest importance may be repeated every MH frame.
- the broadcast receiver identifies an IP address and a UDP port number of a corresponding service in the SMT with reference to MH_service_id of the GAT, parses the FLUTE data transmitted through the SMT, and provides an electronic service guide (ESG). It may display that the emergency alert content is included through.
- the broadcast receiver refers to the EAS_NRT_service_id of the mobile emergency alert table, identifies an ip address and a UDP port number for transmitting a service including an emergency alert message transmitted to the NRT, and parses the FLUTE data transmitted through the emergency alert message. Can be displayed.
- the mobile emergency alert table may include an emergency alert message. In this case, the emergency alert message may be directly parsed and displayed through a CAP parser.
- FIG. 5 is a diagram illustrating syntax of a mobile emergency alert table according to an embodiment of the present invention.
- the mobile emergency alert table of the present invention includes a table_id field, an EAT_MH_protocol_version field, an ensemble_id field, an automatic_tuning_channel_number field, an automatic_tuning_ts_id field, an automatic_tuning_ensemble_id field, an automatic_tuning_service_id field, an num_EAS_message_ field, an EAS_message_id field, a type_type_file_of_field_disp_file_of_field field It may include an EAS_message_length field, an EAS_message_bytes field, and / or an EAS_NRT_service_id field.
- table_id field Identifies the type of current table.
- the broadcast receiver may identify a table_id field of a specific value and identify that this table is a mobile emergency alert table.
- the EAT_MH_protocol_version field identifies version information for these when the structure of the mobile emergency alert table is changed.
- the ensemble_id field represents an ID of an ensemble associated with this table.
- the automatic_tuning_channel_number field represents a physical RF channel number for automatic tuning. For example, when forced tuning is necessary to a channel number on which an emergency alert message is broadcasted, the above field may be referred to.
- the automatic_tuning_ts_id field represents a transport stream ID for automatic tuning. For example, if a transport stream including an emergency alert message needs to be parsed, the stream can be identified through the above ID.
- the automatic_tuning_ensemble_id field represents an ID of an ensemble for automatic tuning. For example, an ensemble including an emergency alert message may be identified through the above field.
- the automatic_tuning_service_id field represents a target A / V service of automatic tuning. If automatic tuning is specified in the mobile emergency alert table, the emergency alert table may or may not include an alert message. If auto tuning is specified, the broadcast receiver will ignore the message and tune to the target channel number.
- the num_EAS_messages field represents the number of emergency alert messages included in the mobile emergency alert table.
- the EAS_message_id field identifies a unique ID for sending an emergency alert message. This field may be changed if a previous emergency alert message is updated or canceled. In another embodiment, this field may be extracted from the CAP message ID.
- the type_of_responder field represents a broadcast target of an emergency alert message.
- the type_of_disciplines field represents information on an emergency situation that is the subject of an emergency alert.
- the EAS_IP_version_flag field indicates that the IP_address field includes an IPv4 address when set to '0', and indicates that the IP_address field is for IPv6 when set to '1'.
- the EAS_message_transfer_type field represents a transmission type of an emergency alert message.
- the EAS_message_encoding_type field represents an encoding plan of an emergency alert message.
- the EAS_message_length field represents the compression length of the compressed emergency alert message including the emergency alert.
- the EAS_message_bytes field represents the size of a compressed emergency alert message including an emergency alert.
- the EAS_NRT_service_id field identifies a service ID of an NRT service that provides additional content associated with an emergency alert message. This field may also be inserted in the SMT included in the ensemble for transmitting the emergency alert table.
- FIG. 6 is a diagram illustrating the meaning according to each value of a type_of_responder field, a type_of_disciplines field, an EAS_message_transfer_type field, and an EAS_message_encoding_type field according to an embodiment of the present invention.
- the type_of_responder field indicates, depending on the value of this field, that the viewer of the emergency alert message has not been identified, that the viewer is not public, that the viewer is the public, or that the viewer is the public and the public. If not, it can be included.
- the type_of_disciplines field indicates the status of an emergency alert system invocation, an explosion event, a fire situation, a hazardous material occurrence event, law enforcement, or life saving situation. Can be represented.
- the EAS_message_transfer_type field indicates that, according to the value of this field, the transmission type of the emergency alert message is not identified, an NRT file containing no alert message is transmitted, or an emergency alert message is transmitted in a mobile emergency alert table. It may indicate that an emergency alert message is transmitted through an IP datagram.
- the EAS_message_encoding_type field indicates that no encoding plan is identified, that no encoding (or compression) has been performed for an emergency alert message, or that an emergency alert message is compressed using the gzip algorithm. It may indicate that
- FIG. 7 is a diagram illustrating syntax of an IP datagram when it is identified that an emergency alert message is transmitted through an IP datagram according to an embodiment of the present invention.
- the IP datagram may include an EAS_message_id field, an EAS_message_length field, and / or an EAS_message_bytes field.
- the EAS_message_id field corresponds to a value corresponding to an entry of an emergency alert message in the mobile emergency alert table.
- the EAS_message_length field represents the length of each emergency alert message.
- the EAS_message_bytes field represents the size of the compressed emergency alert message.
- FIG. 8 is a diagram illustrating syntax of an FIC segment header according to an embodiment of the present invention.
- the mobile broadcast receiver may operate in a standby mode and perform a response to an emergency alert message through a wake up function.
- the mobile broadcast receiver capable of performing the wake up function may not monitor the broadcast service but may monitor the broadcast signal transmitted from the broadcaster even in the standby mode.
- Wakeup refers to switching the broadcast receiver to the active mode (or the active mode) even when the broadcast receiver is in the sleeping mode (or the standby mode) for the emergency alert message.
- the smallest unit for signaling in the mobile broadcast service is the FIC segment header included in the FIC segment, but in order to obtain the FIC segment, the broadcast receiver needs to receive at least one RS frame.
- Changes in FIC chunks can be detected by monitoring the TPC. For example, when the value of the FIC_version field included in the TPC changes, it can be seen that there is a change in the FIC chunk.
- the broadcast receiver detects a change in the FIC_version field in the TPC, the broadcast receiver receives an RS frame to turn on the broadcast receiver and collect FIC segments. If there is a wakeup signal in the FIC Chunk, a wakeup indicator in the FIC segment header may be used to determine if the mobile broadcast receiver should wake up.
- the FIC Chunk is divided into a plurality of FIC segment payloads and transmitted.
- the FIC segment includes an FIC segment header and an FIC segment payload.
- the FIC segment is transmitted through one data group.
- the FIC segment header includes a FIC_segment_type field, wake_up_indicator field, FIC_chunk_major_protocol_version field, current_next_indicator field, error_indicator field, FIC_segment_num field, and / or FIC_last_segment_num field.
- the FIC_segment_type field indicates the type of data transmitted by the FIC segment.
- the FIC_segment_type field may indicate that the FIC segment payload carries a portion of the FIC Chunk, or that the FIC segment payload does not contain meaningful data, depending on its value.
- the wake_up_indicator field indicates whether a mobile broadcast receiver capable of performing a wake-up function should automatically turn on the power and provide an emergency alert message. For example, according to the value of the wake_up_indicator field, the mobile broadcast receiver may be controlled to ignore the wake-up process and continue to perform the previous function or to immediately perform the wake-up function.
- the FIC_chunk_major_protocol_version field indicates a major protocol version of FIC Chunk partially transmitted through the FIC segment. This value may be set equal to the value of the FIC_chunk_major_protocol_version field included in the FIC Chunk header.
- the current_next_indicator field represents the current or next state of the FIC chunk partially transmitted through the FIC segment.
- the error_indicator field indicates whether an error is detected in the FIC segment.
- the FIC_segment_num field indicates the number of an FIC segment.
- the FIC segment including the FIC segment payload included in the FIC chunk may indicate the number of FIC segments.
- the FIC_last_segment_num field indicates the number of the last FIC segment.
- the FIC segment may indicate which FIC segment is the last FIC segment among the FIC segments including the FIC segment payload included in the FIC chunk.
- FIG. 9 is a diagram illustrating syntax of an FIC chunk payload according to an embodiment of the present invention.
- the mobile broadcast receiver capable of performing the wake up function will be monitoring the FIC_version field in the TPC. If a change in the FIC_version field is detected, the mobile broadcast receiver will begin collecting FIC segments. If the wake_up_indicator field of the FIC segment header indicates that the wake up function should be performed, the mobile broadcast receiver will receive an ensemble that includes the mobile emergency alert table in the service signaling channel. In this case, the ensemble may be identified by the EAT_ensemble_indicator field.
- the FIC Chunk payload includes an ensemble_id field, an ensemble_protocol_version field, an SLT_ensemble_indicator field, a GAT_ensemble_indicator field, an EAT_ensemble_indicatoer field, an MH_service_signaling_channel_version field, a num_MH_services field, an MH_service_id_service_id_service_id_service_id_service_id field, and a multi-service field.
- the ensemble_id field identifies an ensemble signaled by the corresponding FIC.
- the ensemble_protocol_version field represents version information of the structure of an ensemble.
- the SLT_ensemble_indicator field indicates whether a service signaling channel included in an ensemble includes a service labeling table.
- the GAT_ensemble_indicator field indicates whether a service signaling channel included in an ensemble includes a guide access table.
- the EAT_ensemble_indicatoer field indicates whether the service signaling channel included in the ensemble includes the mobile emergency alert table. Or EAT_ensemble_indicator indicates that the mobile emergency alert table is transmitted in the signaling stream of this ensemble.
- the MH_service_signaling_channel_version field indicates the version of the service signaling channel included in the ensemble.
- the num_MH_services field represents the number of MH services signaled through the ensemble.
- the MH_service_id field identifies MH service.
- the multi-ensemble_service field indicates whether an MH service is transmitted through one or more ensemble.
- the MH_service_status field represents the status of an MH service.
- the MH_service_status field indicates whether the MH service is activated and / or whether the MH service is 'hidden' according to the value of this field.
- the SP_indicator field represents whether service protection has been applied to at least one or more components for providing an MH service.
- FIG. 10 is a flowchart illustrating a data processing for performing a wake-up function according to an embodiment of the present invention.
- the mobile broadcast receiver monitors the FIC segment header or the TPC. If there is no change in the FIC_version field, the mobile broadcast receiver continues the above monitoring. If there is a change in the FIC_version field, the mobile broadcast receiver checks the FIC segment header (10010). If the wake_up_indicator field in the FIC segment header indicates no wake-up function, the mobile broadcast receiver continues to monitor the FIC segment header or TPC, and if the wake_up_indicator field indicates to perform the wake-up function (10020), The FIC segments are collected to complete the FIC chunk (10030). The mobile broadcast receiver checks EAT_ensemble_indicator of the FIC Chunk payload (10040).
- the mobile broadcast receiver starts parsing / decoding the ensemble (10060) if the EAT_ensemble_indicator points to an ensemble that transmits the mobile emergency alert table (10050), and starts an application if an application for providing an emergency alert message is needed. (10070).
- the mobile broadcast receiver obtains a mobile emergency alert table from the ensemble (10080), and parses and displays an emergency alert message using the table (10090). When the above-described process is finished, the mobile broadcast receiver turns off the power (10100).
- FIG. 11 is a diagram illustrating syntax of an FIC chunk header according to an embodiment of the present invention.
- the broadcast receiver needs to ignore repeated transmissions for the same wakeup event.
- FIC Chunk header may include a field FIC_chunk_major_protocol_version, FIC_chunk_minor_protocol_version field, FIC_chunk_header_extension_length field, ensemble_loop_header_extension_length field, MH_service_loop_extension_length field, current_next_indicator field, transport_stream_id field, EAS_wake_up_extended_info field, EAS_wake_up_extended_info_Tag field, EAS_wake_up_version_number field, and / or num_ensembles field.
- the FIC_chunk_major_protocol_version field represents a major version of syntax of FIC Chunk.
- a major level change represents a change in the syntax of the FIC Chunk in a range where backward compatibility is not maintained.
- the FIC_chunk_minor_protocol_version field represents a minor version of the syntax of FIC Chunk.
- a change in the minor level represents a change in syntax of the FIC Chunk in the range in which backward compatibility is maintained.
- the FIC_chunk_minor_protocol_version field may indicate that a wakeup signaling extension for an emergency alert system exists in FIC Chunk.
- the FIC_chunk_header_extension_length field indicates the length in fields extended in the FIC Chunk header due to a change in the minor level in the syntax of the FIC Chunk.
- the FIC_chunk_header_extension_length field may indicate the length of a field extended by wakeup signaling extension.
- the ensemble_loop_header_extension_length field represents the length of the extension field of the header of the num_ensemble loop in the FIC Chunk payload added by the change of the minor level of the syntax of the FIC Chunk.
- the MH_service_loop_extension_length field represents the length of the extension field of the num_MH_services loop entry in the FIC Chunk payload added by the change of the minor level of the syntax of the FIC Chunk.
- the current_next_indicator field indicates whether the FIC Chunk is applicable to the current MH frame or the next MH frame.
- the transport_stream_id field serves as a label for identifying a mobile broadcast.
- the EAS_wake_up_extended_info field includes information on an extended field for the wakeup function.
- the EAS_wake_up_extended_info_Tag field indicates the type of the extended FIC Chunk header.
- the EAS_wake_up_extended_info_Tag field may indicate the size of the extended field for the wakeup function.
- the EAS_wake_up_version_number field represents version information of wakeup signaling.
- the num_ensembles field indicates the number of ensembles transmitted through a physical transport channel with respect to the FIC Chunk.
- FIG. 12 is a diagram illustrating a procedure for processing version information of wake-up signaling through extension of an FIC Chunk header according to an embodiment of the present invention.
- the broadcast receiver checks the FIC segment header when the FIC_version field is changed while monitoring the FIC_version field included in the TPC.
- the broadcast receiver indicates that the wake_up_indicatoer field will perform a wake-up function
- the broadcast receiver receives the FIC Chunk and checks the FIC_chunk_minor_protocol_version field and / or the FIC_chunk_header_extension_length field in the FIC Chunk header.
- the broadcast receiver parses the FIC_chunk_header_extension_length field if the FIC_chunk_minor_protocol_version field indicates a change in the FIC Chunk for wakeup signaling, and if the FIC_chunk_header_extension_length field indicates that there is an extension of the FIC Chunk header for wakeup signaling, the EAS_wake_up_extended_extended_ext_up Check the field.
- the broadcast receiver checks the extended field through the EAS_wake_up_extended_info_Tag field and determines whether there is a change in the version of the wakeup signaling through the EAS_wake_up_version_number field.
- the broadcast receiver checks the EAT_ensemble_indicator field in the FIC Chunk payload when the version of the wake-up signaling changes, and obtains the mobile emergency alert table from the ensemble transmitting the mobile emergency alert table.
- the broadcast receiver processes the emergency alert system using the obtained mobile emergency alert table.
- FIG. 13 is a diagram illustrating processing of automatic tuning of a wake-up operation to a critical emergency alert according to an embodiment of the present invention.
- the broadcast receiver may provide automatic tuning as an important emergency alert as part of the wake-up operation.
- the broadcast receiver checks the FIC segment header when the FIC_version field is changed while monitoring the FIC_version field included in the TPC.
- the broadcast receiver receives the FIC Chunk and checks the version of the wakeup signaling when the wake_up_indicatoer field indicates to perform the wakeup function.
- the fields included in the automatic_tuning_info field in the mobile emergency alert table indicate that automatic tuning to another channel is required Perform tuning at the frequency of. Acquire an ensemble at the frequency and execute the emergency alert system using the mobile emergency alert table included in the ensemble.
- FDT FLUTE File Delivery Table
- an FDT instance needs to be modified to allow zero files to be transmitted through a FLUTE session for transmitting an NRT file.
- the element of the FLUTE FDT instance transmitted in the NRT broadcast service for emergency alert follows the content of OMA BCAST.
- FIG. 15 is a diagram illustrating syntax of a TPC for wake-up signaling using a TPC according to another embodiment of the present invention.
- wake_up_indicator and wake_up_version_number may be added to the TPC data.
- the broadcast receiver may determine whether to perform a wake-up function for an emergency alert even by watching only the TPC data.
- the wake-up function may be performed by adding wake_up_indicator and wake_up_version_number information to TPC data (Transmission Parameter Channel Data) described in ATSC A / 153 Part 2. Therefore, although some fields in the TPC are omitted in FIG. 15, this may refer to ATSC A / 153 Part 2.
- TPC data Transmission Parameter Channel Data
- FIG. 15 the fields of the field included in the TPC illustrated in FIG. 15 without further description may refer to the contents described in ATSC A / 153 Part 2.
- the TPC data may include a wake_up_indicator field and / or a wake_up_version_number field.
- the wake_up_indicator field allocates 1-bit using an existing reserved bit.
- the wake_up_indicator field indicates whether a broadcast receiver should perform a wake up function. For example, if this value is '0', the broadcast receiver should perform a wake up function in the standby mode, and if it is '1', it maintains the existing state. That is, when the broadcast receiver is in the standby mode, the TPC may be continuously monitored, and when the A / V is reproduced, the A / V may be continuously reproduced.
- the wake_up_version_number field represents version information of wakeup signaling.
- the broadcast receiver may compare the value of the wake_up_version_number field with the value of the previously received wake_up_version_number field to change from a standby mode to an active mode to determine whether a new wakeup is received before receiving the FIC.
- 16 is a diagram illustrating syntax of an FIC segment header according to another embodiment of the present invention.
- the mobile broadcast receiver may correspond to two wakeups.
- wakeup signaling corresponding to the same wake-up 1 may be continuously transmitted.
- the broadcast receiver may determine whether the wake-up is delivered after the user forcibly terminates by using the 2-bit wake_up_indicator field. That is, when a strong disaster corresponding to a later wake-up 2 is issued and signaling of the wake-up 2 is transmitted, the broadcast receiver may be forcibly turned on again. Accordingly, a function of distinguishing a previously received wakeup from a newly received wakeup may be necessary by allocating 2 bits to the wake_up_indicator field.
- FIG. 17 is a diagram illustrating an ESG content fragment according to another embodiment of the present invention.
- the emergency alert system may use one same NRT service for all emergency alert messages without using different NRT services for each emergency alert message.
- the content fragment of the ESG may include a new element to find out which message each NRT content is associated with.
- the ESG content fragment may include an EAS_Content_message_ID field and / or an EAS_Content_message_TAG field.
- the EAS_Content_message_ID field may have a value equal to the ID of the emergency alert message specified in the mobile emergency alert table.
- the EAS_Content_message_TAG field is a value that can be used when showing an NRT list. For example, if the emergency alert message is for 'Typhoon', the TAG may have a value of "Typhoon Alert". The value of this TAG is assigned to the ESG server installed in the local station.
- FIG. 18 is a diagram illustrating an emergency alert system according to an embodiment of the present invention.
- the Public Broadcasting Service obtains an emergency alert message through the Secure Line from the Integrated Public Alert and Warning System (IPAWS) -OPEN and sends the message to the local PBS station through the satellite network.
- the emergency alert message delivered to the local PBS station is made from the Mobile Digital Television (MDTV) signaling server into a mobile emergency alert table, which is sent to the MDTV network through the multiplexer and the exciter.
- MDTV Mobile Digital Television
- the MDTV receiver parses the mobile emergency alert cable using a signaling decoder, parses the emergency alert message existing inside the mobile emergency alert table, and extracts the text of the emergency alert message to be displayed on the screen.
- the flow of additional information on the emergency alert message through the NRT may proceed as follows.
- the local PBS station creates additional information files related to the disaster and stores them in the NRT file repository used by the MDTV NRT server.
- the MDTV NRT server forms signaling information related to the files stored in the NRT file repository. Will be sent in non-real-time. This is also transmitted through MDTV network using multiplexer and exciter, and the broadcast receiver finds out the information about the files transmitted to NRT by using FLUTE / ESG function and receives the file. Can show on
- an NRT file is not generated at each local PBS station, but a URI information indicating additional information is included in the CAP message when an emergency alert message is issued from IPAWS-OPEN.
- a ⁇ uri> element that is a sub element of the ⁇ resource> element of the CAP may be used.
- the MDTV signaling server extracts the URI information of the CAP message to get a resource file, which is transmitted through the MDTV network through the NRT.
- the emergency alert message recipients of the mobile emergency alert system can be divided into public and non-public.
- Non-public users are defined as First Responders.
- First Responder refers to those who have the capacity to handle each disaster. For example, in the event of a fire, 911 would be the first responder.
- the mobile emergency alert table defines the type of receiver / receiver to which an emergency alert message should be delivered. It also defines what discipline should be delivered if the receiver is a first responder. Information on this replaces the above description.
- 19 is a diagram illustrating a scene for providing additional information of an emergency alert message using an NRT according to an embodiment of the present invention.
- the broadcast receiver may display additional information related to the disaster by using files transmitted in non-real-time.
- the mobile emergency alert system it is possible to send several emergency alert messages at the same time.
- each emergency alert message may have different NRT side information.
- all information related to NRT can be included in ESG. Therefore, all MDTV receivers must have ESG functionality, and additional information can be shown to the user after updating the ESG. After updating the ESG, the MDTV receiver reads the name of each NRT service from the ESG's Service Fragment and displays it on the screen. Referring to FIG.
- FIG. 20 is a diagram illustrating a scene for providing additional information of an emergency alert message using an NRT according to another embodiment of the present invention.
- the receiver may display a list of contents associated with the service on the screen.
- Information related to the content may be included in the ESG and transmitted.
- the NRT content information is recorded in the content fragment of the ESG, and the receiver searches for content items referring to the service selected by the user, and forms a list of information such as the name of the content and / or expiration date on the screen Can be.
- Each NRT file providing additional information of the emergency alert message is transmitted to the broadcast receiver via FLUTE and stored in a storage inside the broadcast receiver. If the user wants to view the additional information, the broadcast receiver reads the file and displays the additional information.
- 21 is a diagram illustrating a UI of a mobile emergency alert system according to an embodiment of the present invention.
- the mobile broadcast receiver receives relevant signaling information, completes the extraction of the emergency alert message, and displays the emergency alert message.
- the mobile broadcast receiver may create and display a menu under the name of EAS in order to show additional information of the emergency alert message.
- NRT service list related to emergency alert is displayed.
- mobile broadcasting receiver displays related contents list by name, expiration date, and / Alternatively, the information may be displayed on the screen by configuring information such as a reception state of a file. Referring to FIG. 21, when a user selects an evacuation map from a content list, the corresponding map is displayed on the screen.
- FIG. 22 is a diagram illustrating syntax of a mobile emergency alert table according to another embodiment of the present invention.
- FIG. 22 is a diagram illustrating syntax of a mobile emergency alert table according to another embodiment of the present invention.
- the mobile emergency alert table includes an event_code field, an event_urgency field, an event_severity field, an event_certainty field, an EAS_message_type field, a num_referenced_messages field, a referenced_message_id field, an event_expiry_time field, a num_geo_code field, a geo_code field, an alert_text_length field, and / or Alternatively, it may include an alert_text () descriptor.
- the event_code field represents a code for an event associated with an emergency alert message.
- the event_urgency field represents the urgency of the response to the event associated with the emergency alert message.
- the event_severity field represents the severity of the event associated with the emergency alert message.
- the event_certainty field represents the degree of certainty of the event associated with the emergency alert message.
- the EAS_message_type field represents the type of emergency alert message.
- the num_referenced_messages field represents the number of messages referenced by the current emergency alert message among emergency alert messages that have already been transmitted.
- the referenced_message_id field represents the ID of the emergency alert message referenced by the current emergency alert message.
- the event_expiry_time field represents a time when information included in an emergency alert message is valid.
- the num_geo_code field represents the number of codes indicating an area to which an emergency alert message affects.
- the geo_code field represents a code indicating the area where the emergency alert message affects.
- the alert_text_length field represents the length of text of an emergency alert.
- alert_text () field indicates the text of the emergency alert.
- alert_text () may be defined in the form of a descriptor, and in this case, may be defined as a descriptor including additional information regarding the text of the emergency alert.
- the emergency alert message can be used even in a mobile broadcast receiver in which the parser of the emergency alert message file does not exist. It works.
- FIG. 23 is a diagram illustrating definitions of values of an event_urgency field, an event_severity field, an event_certainty field, and an EAS_message_type field according to another embodiment of the present invention.
- FIG. 23 is a diagram illustrating definitions of values of an event_urgency field, an event_severity field, an event_certainty field, and an EAS_message_type field according to another embodiment of the present invention.
- the event_urgency field indicates that an emergency alert is about a past event, an emergency alert is about a future event, an event about which an emergency alert is expected, or an emergency alert. May indicate that the event is currently occurring, or that the urgency for the event indicated by the emergency alert is unknown.
- the event_severity field indicates that the severity of the emergency alert event is low, the severity of the emergency alert event is medium, or the severity of the emergency alert event, depending on the value of this field. Alternatively, it may indicate that the severity of the event of the emergency alert is of extreme severity, or that the severity of the event of the emergency alert is unknown.
- the event_certainty field indicates that, depending on the value of this field, it is unlikely that an event related to an emergency alert will occur, that an event related to an emergency alert is likely to occur, or that an event related to an emergency alert may occur. It may indicate that it is high, that an event related to an emergency alert is currently being observed, or that there is no known information about the likelihood that an event related to an emergency alert will occur.
- EAS_message_type field Depending on the value of this field, it indicates that the transmitted emergency alert message is an emergency alert message for a new event or updates a message having a specific referenced_message_id value among the messages in which the transmitted emergency alert message was previously transmitted. Indicates that the message is an emergency alert message sent, that an emergency alert message that cancels a message with a specific referenced_message_id value, that the transmitted emergency alert message is a response message to a specific request, or It may indicate that there is an error or that the type of the emergency alert message transmitted is not identified.
- FIG. 24 is a diagram illustrating a mobile emergency alert table according to another embodiment of the present invention.
- Emergency alert messages should be able to be delivered precisely to the areas where events related to emergency alerts are affected. Therefore, the broadcast receiver needs to review the suitability of the message before parsing the transmitted emergency alert message.
- the mobile emergency alert table may include a num_FIPS_codes field, a FIPS_codes field, an EAS_event_code field, a content_coding field, a content_type field, and / or an NRT_service_id field.
- the num_FIPS_codes field represents the number of FIPS codes indicating the regions where emergency alert messages affect.
- the FIPS_codes field represents a code indicating the area where the emergency alert message affects. The value of this field may be expressed in FIPS code.
- the EAS_event_code field represents a code for an event associated with an emergency alert message. This field can be represented as 3 letters encoded in UTF-8.
- the content_coding field represents an encoding scheme of an emergency alert message.
- the content_coding field may indicate that the emergency alert message is plain text or may indicate that the emergency alert message is compressed in gzip according to the value of this field.
- the content_type field represents the type of emergency alert message.
- the content_type field may indicate that it is an emergency alert message used by the CMAS according to a value of this field, or may indicate that it is an emergency alert message that follows the criteria of the CAP.
- the NRT_service_id field identifies an NRT service including additional information about an emergency alert message or an emergency alert message.
- the broadcast receiver may examine whether the message is a message suitable for the region where the broadcast receiver is located, so that only the necessary emergency alert message is delivered to the viewer. have.
- the emergency alert message is not suitable for the region, there is an effect of reducing unnecessary processing procedures in the broadcast receiver.
- 25 is a diagram illustrating a mobile emergency alert table according to another embodiment of the present invention.
- the mobile emergency alert table may include an NRT_service_IP_address_flag field, and / or an SG_bootstrap_data () field / descriptor.
- the NRT_service_IP_address_flag field indicates whether there is IP information associated with an NRT service that transmits additional content for an emergency alert message.
- the SG_bootstrap_data () field may define a syntax including IP information for acquiring the NRT service when the NRT_service_IP_address_flag field indicates that there is IP information associated with an NRT service that transmits additional content for an emergency alert message.
- SG_bootstrap_data () may be defined in the form of a descriptor and include a syntax including IP information for obtaining an NRT service. It may include syntax when SG_delivery_network_type defined in Part 3 of ATSC A / 153 is '0x02'.
- NRT service that provides additional information on an emergency alert message without using SMT.
- FIG. 26 is a diagram illustrating a descriptor for signaling an emergency alert service through extension of an SMT according to an embodiment of the present invention.
- Disaster alert service can be sent to individual service like A / V service in one ensemble. In this case, it is necessary to perform signaling for the disaster alert service in the SMT.
- the descriptor for signaling an emergency alert service may include a descriptor_tag field, a descriptor_length field, a priority_level field, an EAS_message_sent_type field, an IP_address field, a UDP_port_num field, and / or a service_related_nrt_service_id field.
- the descriptor_tag field represents that the descriptor is a descriptor for a disaster alert service.
- the descriptor_length field represents the total length of the descriptor after this field.
- the priority_level field represents an important level of emergency alert message.
- the priority_level field depending on the value of this field, indicates that an emergency alert message should be processed first, that an emergency alert message should be processed according to a normal processing procedure, or It may indicate that it is not defined.
- the EAS_message_sent_type field represents a transmission type of an emergency alert message.
- the EAS_message_sent_type field indicates that an emergency alert message is sent through a separate table, i.e., a mobile emergency alert table, that a method of sending an emergency alert message is not defined, or an emergency alert. It may indicate that a message is transmitted through an IP datagram.
- the IP_address field indicates an IP address of an IP datagram including an emergency alert message when the EAS_message_sent_type field indicates that an emergency alert message is transmitted through an IP datagram.
- the UDP_port_num field indicates a port number of a UDP / IP stream for transmitting an IP datagram including an emergency alert message when the EAS_message_sent_type field indicates that an emergency alert message is transmitted through an IP datagram.
- the service_related_nrt_service_id field represents an ID of an NRT service that transmits content associated with a transmitted emergency alert message.
- the descriptor according to the embodiment of the present invention may be included in the extended area for the descriptor included in the SMT.
- SMT can be described with reference to the form described in ATSC A / 153.
- FIG. 27 illustrates a descriptor for signaling an emergency alert service according to another embodiment of the present invention.
- Descriptors for signaling for the emergency alert service may be defined at the ensemble level.
- the descriptor for signaling for an emergency alert service may include an IP_version_flag field and / or an ensemble_related_nrt_service_id field.
- the description of other fields included in this descriptor is replaced with the description of the fields of the above-described descriptor.
- the IP_version_flag field indicates the IP address format of the IP datagram including the emergency alert message when the 'EAS_message_sent_type field indicates that an emergency alert message is transmitted through the IP datagram.
- the IP_version_flag field may indicate that an IP address format of an IP datagram uses an IPv4 format or an IPv6 address format according to a value of this field.
- the ensemble_related_nrt_service_id field represents an ID of an NRT service for transmitting content associated with an emergency alert message to be transmitted.
- 28 is a diagram illustrating signaling for providing an emergency alert service to one component according to an embodiment of the present invention.
- a new M / H component descriptor may be defined by adding a definition of a new component_type and extracting only a field that is actually used among FLUTE component data.
- the component_type field may indicate that an M / H component is a component for an emergency alert service according to its value.
- the TSI field of the MH_component_data () descriptor may be defined, where the TSI field represents an identifier of a transport session of a FLUTE session for transmitting NRT content.
- FIG. 29 is a diagram illustrating an emergency_alert_IP_datagram () descriptor for emergency alert service transmission according to an embodiment of the present invention.
- the IP_header field represents an IP header of an IP datagram.
- the UDP_header field represents a UDP header of an IP datagram.
- the payload_type_indicator field represents a payload type of an IP datagram for transmitting an emergency alert message.
- the payload_type_indicator field indicates that, depending on the value of this field, the payload of the IP datagram contains a separate syntax that contains the information of the emergency alert message, or the payload of the IP datagram contains the emergency alert message file itself. In this case, the payload type of the IP datagram may not be defined.
- the payload of the IP datagram when the payload_type_indicator field indicates that the payload of the IP datagram includes a separate syntax including information of the emergency alert message, the payload of the IP datagram is the aforementioned mobile emergency alert tables. It may include any type of table.
- FIG. 30 is a diagram illustrating an emergency_alert_IP_datagram () descriptor for emergency alert service transmission according to another embodiment of the present invention.
- the payload of the IP datagram may include text or / and compressed emergency alert message file (s).
- the payload contains a series of message_header and message_body sets.
- the message_header may include detailed information (message_body_length, message_gzipped_flag, etc.) about the message_body as shown in FIG. 30.
- the emergency_alert_IP_datagram () descriptor may include a message_body_length field and / or a message_gzipped_flag field.
- the message_body_length field represents the length of the message_body. The length of message_body cannot exceed the total length of the IP datagram.
- the message_gzipped_flag field represents whether a compressed emergency alert message is included in the message_body.
- the message_gzipped_flag field may indicate that an emergency alert message included in the payload is compressed by gzip according to a value of this field.
- FIG. 31 is a view showing a content fragment of an ESG for emergency alert service according to another embodiment of the present invention.
- the content related to the emergency alert message may be transmitted through the NRT service.
- the content transmitted through the NRT service may deliver detailed information through a content fragment of the ESG.
- the content fragment of the ESG may include an emergency element and / or a weight element.
- the emergency element indicates whether the corresponding content is content related to an emergency alert situation.
- the value of the emergency element may be set to true to indicate that the content is content associated with an emergency alert situation.
- the weight element determines the display order of contents belonging to the same service. For example, as the value of the corresponding element is lower, the corresponding content may be preferentially displayed on the screen. Therefore, in order to preferentially display content on the screen, the value of the weight element should be set low. In the case of content that is to be forcibly displayed on the receiver screen, the value of this element may be set to zero.
- the broadcast receiver may perform fast processing on content associated with an emergency alert message by using a content fragment of the ESG.
- Apparatus and method according to the present invention is not limited to the configuration and method of the embodiments described as described above, the above-described embodiments may be selectively all or part of each embodiment so that various modifications can be made It may be configured in combination.
- the image processing method of the present invention can be implemented as a processor-readable code on a processor-readable recording medium provided in the network device.
- the processor-readable recording medium includes all kinds of recording devices that store data that can be read by the processor. Examples of the processor-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like, and may also be implemented in the form of a carrier wave such as transmission over the Internet. .
- the processor-readable recording medium can also be distributed over network coupled computer systems so that the processor-readable code is stored and executed in a distributed fashion.
- the present invention can use mobile broadcasting throughout the industry.
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Description
Claims (18)
- 앙상블을 RS (Reed-Solomon) - CRC (Cyclic Redundancy Check) 인코딩하여 2차원의 데이터 프레임인 RS 프레임을 생성하는 RS 프레임 인코더, 여기서 상기 앙상블은 모바일 방송 서비스를 위한 모바일 데이터, 및 상기 모바일 방송 서비스에 대한 어세스 (access) 정보를 포함하는 서비스 시그널링 채널을 포함하는 것을 특징으로 함;상기 생성된 RS 프레임을 복수의 RS 프레임 포션으로 분할하는 RS 프레임 디바이더;모바일 방송의 전송 파라미터를 시그널링하기 위한 TPC (Transmission Parameter Channel), 및 상기 앙상블과 상기 방송 서비스 사이의 연결 정보를 포함하는 FIC (Fast Information Channel) 를 포함하는 시그널링 데이터를 생성하는 시그널링 인코더;상기 시그널링 데이터의 일부 및 상기 RS 프레임 포션을 포함하는 데이터 그룹을 생성하는 데이터 그룹 포맷터; 및상기 데이터 그룹을 포함하는 모바일 방송 신호를 생생하는 방송 신호 생성부;를 포함하며,상기 서비스 시그널링 채널은, 상기 앙상블에 의하여 전송되는 모바일 서비스에 대한 속성 정보를 포함하는 서비스 맵 테이블 (Service Map Table) 및 긴급 경보 서비스를 모바일 방송으로 전송하기 위한 정보를 포함하는 모바일 긴급 경보 테이블을 포함하며,상기 모바일 긴급 경보 테이블은, 상기 긴급 경보 메시지가 전송되는 방식을 가리키는 긴급 경보 메시지 전송 타입 필드를 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치.
- 제 1 항에 있어서, 상기 긴급 경보 메시지 전송 타입 필드는,상기 긴급 경보 메시지가 상기 모바일 긴급 경보 테이블 내에 포함되어져 전송되거나, 상기 긴급 경보 메시지가 IP 데이터그램을 통하여 전송되는 것을 가리키는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치.
- 제 1 항에 있어서, 상기 모바일 긴급 경보 테이블은,상기 긴급 경보 서비스를 제공하는 물리적 RF 채널로 자동 튜닝을 하기 위한 물리적 RF 채널 번호를 가리키는 자동 튜닝 채널 번호 필드를 더 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치.
- 제 1 항에 있어서, 상기 모바일 긴급 경보 테이블은,상기 긴급 경보 메시지의 수신 대상자를 나타내는 긴급 경보 대상자 타입 필드를 더 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치.
- 제 1 항에 있어서, 상기 모바일 긴급 경보 테이블은,상기 긴급 경보의 대상이 되는 긴급 상황을 식별하는 긴급 상황 타입 필드를 더 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치.
- 제 1 항에 있어서, 상기 모바일 긴급 경보 테이블은,상기 긴급 경보 메시지와 관련한 부가 정보를 제공하는 NRT 서비스를 식별하는 NRT 서비스 식별자 필드를 더 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치.
- 제 1 항에 있어서, 상기 FIC는,복수의 FIC 세그먼트 형태로 상기 데이터 그룹에 포함되어 전송되며,상기 FIC 세그먼트는 FIC 세그먼트 헤더와 FIC 세그먼트 페이로드를 포함하며,상기 FIC 세그먼트 헤더는, 웨이크업 기능을 수행 가능한 모바일 방송 수신기가 자동으로 전원을 ON 하고, 긴급 경보 메시지를 제공하여야 하는지를 가리키는 웨이크업 지시자 필드를 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치.
- 제 1 항에 있어서,상기 FIC는, FIC 헤더 및 FIC 페이로드를 포함하고,상기 FIC 페이로드는, 상기 앙상블 내에 포함되는 서비스 시그널링 채널을 통하여 상기 모바일 긴급 경보 테이블이 전송되는지 여부를 나타내는 EAT_ensemble_indicator 필드, 상기 앙상블에 포함되는 서비스 시그널링 채널의 버전 정보를 나타내는 MH_service_signaling_channel_version 필드, 및 상기 앙상블을 통하여 전송되는 모바일 서비스의 개수를 나타내는 num_MH_services 필드를 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치.
- 제 8 항에 있어서, 상기 FIC 헤더는,확장된 FIC 헤더의 바이트가 웨이크업 기능을 위한 정보를 포함하는지 식별하는 EAS_wake_up_extended_info_Tag 필드 및 상기 웨이크업의 시그널링의 버전 정보를 나타내는 EAS_wake_up_version_number 필드를 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치.
- 앙상블을 RS (Reed-Solomon) - CRC (Cyclic Redundancy Check) 인코딩하여 2차원의 데이터 프레임인 RS 프레임을 생성하는 단계, 여기서 상기 앙상블은 모바일 방송 서비스를 위한 모바일 데이터, 및 상기 모바일 방송 서비스에 대한 어세스 (access) 정보를 포함하는 서비스 시그널링 채널을 포함하는 것을 특징으로 함;상기 생성된 RS 프레임을 복수의 RS 프레임 포션으로 분할하는 단계;모바일 방송의 전송 파라미터를 시그널링하기 위한 TPC (Transmission Parameter Channel), 및 상기 앙상블과 상기 방송 서비스 사이의 연결 정보를 포함하는 FIC (Fast Information Channel) 를 포함하는 시그널링 데이터를 생성하는 단계;상기 시그널링 데이터의 일부 및 상기 RS 프레임 포션을 포함하는 데이터 그룹을 생성하는 단계; 및상기 데이터 그룹을 포함하는 모바일 방송 신호를 생생하는 단계;를 포함하며,상기 서비스 시그널링 채널은, 상기 앙상블에 의하여 전송되는 모바일 서비스에 대한 속성 정보를 포함하는 서비스 맵 테이블 (Service Map Table) 및 긴급 경보 서비스를 모바일 방송으로 전송하기 위한 정보를 포함하는 모바일 긴급 경보 테이블을 포함하며,상기 모바일 긴급 경보 테이블은, 상기 긴급 경보 메시지가 전송되는 방식을 가리키는 긴급 경보 메시지 전송 타입 필드를 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 방법.
- 제 10 항에 있어서, 상기 긴급 경보 메시지 전송 타입 필드는,상기 긴급 경보 메시지가 상기 모바일 긴급 경보 테이블 내에 포함되어져 전송되거나, 상기 긴급 경보 메시지가 IP 데이터그램을 통하여 전송되는 것을 가리키는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 방법.
- 제 10 항에 있어서, 상기 모바일 긴급 경보 테이블은,상기 긴급 경보 서비스를 제공하는 물리적 RF 채널로 자동 튜닝을 하기 위한 물리적 RF 채널 번호를 가리키는 자동 튜닝 채널 번호 필드를 더 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 방법.
- 제 10 항에 있어서, 상기 모바일 긴급 경보 테이블은,상기 긴급 경보 메시지의 수신 대상자를 나타내는 긴급 경보 대상자 타입 필드를 더 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 방법.
- 제 10 항에 있어서, 상기 모바일 긴급 경보 테이블은,상기 긴급 경보의 대상이 되는 긴급 상황을 식별하는 긴급 상황 타입 필드를 더 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 방법.
- 제 10 항에 있어서, 상기 모바일 긴급 경보 테이블은,상기 긴급 경보 메시지와 관련한 부가 정보를 제공하는 NRT 서비스를 식별하는 NRT 서비스 식별자 필드를 더 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 방법.
- 제 10 항에 있어서, 상기 FIC는,복수의 FIC 세그먼트 형태로 상기 데이터 그룹에 포함되어 전송되며,상기 FIC 세그먼트는 FIC 세그먼트 헤더와 FIC 세그먼트 페이로드를 포함하며,상기 FIC 세그먼트 헤더는, 웨이크업 기능을 수행 가능한 모바일 방송 수신기가 자동으로 전원을 ON 하고, 긴급 경보 메시지를 제공하여야 하는지를 가리키는 웨이크업 지시자 필드를 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 방법.
- 제 10 항에 있어서,상기 FIC는, FIC 헤더 및 FIC 페이로드를 포함하고,상기 FIC 페이로드는, 상기 앙상블 내에 포함되는 서비스 시그널링 채널을 통하여 상기 모바일 긴급 경보 테이블이 전송되는지 여부를 나타내는 EAT_ensemble_indicator 필드, 상기 앙상블에 포함되는 서비스 시그널링 채널의 버전 정보를 나타내는 MH_service_signaling_channel_version 필드, 및 상기 앙상블을 통하여 전송되는 모바일 서비스의 개수를 나타내는 num_MH_services 필드를 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 방법.
- 제 17 항에 있어서, 상기 FIC 헤더는,확장된 FIC 헤더의 바이트가 웨이크업 기능을 위한 정보를 포함하는지 식별하는 EAS_wake_up_extended_info_Tag 필드 및 상기 웨이크업의 시그널링의 버전 정보를 나타내는 EAS_wake_up_version_number 필드를 포함하는 것을 특징으로 하는 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 방법.
Priority Applications (14)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020137011187A KR101448663B1 (ko) | 2012-03-02 | 2013-01-30 | 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치 및 방법 |
| KR1020137011383A KR101947554B1 (ko) | 2012-03-02 | 2013-01-30 | 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치 및 방법 |
| CN201380000196.8A CN103416080B (zh) | 2012-03-02 | 2013-01-30 | 经由移动广播提供紧急报警服务的方法及其设备 |
| KR1020197016622A KR102114625B1 (ko) | 2012-03-02 | 2013-01-30 | 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치 및 방법 |
| KR1020197003570A KR101989900B1 (ko) | 2012-03-02 | 2013-01-30 | 모바일 방송을 통하여 긴급 경보 서비스를 제공하는 장치 및 방법 |
| US13/882,940 US9219556B2 (en) | 2012-03-02 | 2013-01-30 | Method of providing an emergency alert service via a mobile broadcasting and apparatus therefor |
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| US13/875,838 US9236964B2 (en) | 2012-03-02 | 2013-05-02 | Providing an emergency alert service via a mobile broadcasting |
| US14/962,737 US9516486B2 (en) | 2012-03-02 | 2015-12-08 | Apparatus and method for processing an emergency alert service |
| US15/336,560 US9929820B2 (en) | 2012-03-02 | 2016-10-27 | Method of providing an emergency alert service via a mobile broadcasting and apparatus therefor |
| US15/894,200 US10171192B2 (en) | 2012-03-02 | 2018-02-12 | Method of providing an emergency alert service via a mobile broadcasting and apparatus therefor |
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| US17/329,642 US11515954B2 (en) | 2012-03-02 | 2021-05-25 | Method and apparatus for providing an emergency alert service via a mobile broadcasting |
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| US20160094970A1 (en) | 2016-03-31 |
| KR101448663B1 (ko) | 2014-10-08 |
| US9236964B2 (en) | 2016-01-12 |
| KR20130117778A (ko) | 2013-10-28 |
| KR20190017060A (ko) | 2019-02-19 |
| US20180175952A1 (en) | 2018-06-21 |
| CN103338093A (zh) | 2013-10-02 |
| KR101989900B1 (ko) | 2019-06-17 |
| KR102114625B1 (ko) | 2020-05-25 |
| US11032015B2 (en) | 2021-06-08 |
| US9929820B2 (en) | 2018-03-27 |
| CN106998536A (zh) | 2017-08-01 |
| US11515954B2 (en) | 2022-11-29 |
| CN106998536B (zh) | 2020-06-16 |
| US20130242847A1 (en) | 2013-09-19 |
| CN103416080B (zh) | 2016-10-19 |
| CA2815707C (en) | 2016-07-05 |
| US9219556B2 (en) | 2015-12-22 |
| CN103338093B (zh) | 2017-07-21 |
| US20170048012A1 (en) | 2017-02-16 |
| CN103416080A (zh) | 2013-11-27 |
| KR101947554B1 (ko) | 2019-02-13 |
| US20210281338A1 (en) | 2021-09-09 |
| US20190109657A1 (en) | 2019-04-11 |
| US10171192B2 (en) | 2019-01-01 |
| CA2815707A1 (en) | 2013-09-02 |
| US10615896B2 (en) | 2020-04-07 |
| KR20190069612A (ko) | 2019-06-19 |
| US9516486B2 (en) | 2016-12-06 |
| US20200204278A1 (en) | 2020-06-25 |
| KR20140120809A (ko) | 2014-10-14 |
| US20150036586A1 (en) | 2015-02-05 |
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