WO2015034306A1 - 디지털 방송 시스템에서 고화질 uhd 방송 컨텐츠 송수신 방법 및 장치 - Google Patents
디지털 방송 시스템에서 고화질 uhd 방송 컨텐츠 송수신 방법 및 장치 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/234—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs
- H04N21/2343—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements
- H04N21/234327—Processing of video elementary streams, e.g. splicing of video streams, manipulating MPEG-4 scene graphs involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements by decomposing into layers, e.g. base layer and one or more enhancement layers
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/236—Assembling of a multiplex stream, e.g. transport stream, by combining a video stream with other content or additional data, e.g. inserting a URL [Uniform Resource Locator] into a video stream, multiplexing software data into a video stream; Remultiplexing of multiplex streams; Insertion of stuffing bits into the multiplex stream, e.g. to obtain a constant bit-rate; Assembling of a packetised elementary stream
- H04N21/23605—Creation or processing of packetized elementary streams [PES]
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
- H04N21/2381—Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network
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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]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
- H04N21/2665—Gathering content from different sources, e.g. Internet and satellite
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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
- H04N21/434—Disassembling of a multiplex stream, e.g. demultiplexing audio and video streams, extraction of additional data from a video stream; Remultiplexing of multiplex streams; Extraction or processing of SI; Disassembling of packetised elementary stream
- H04N21/4343—Extraction or processing of packetized elementary streams [PES]
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- 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
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
- H04N21/4622—Retrieving content or additional data from different sources, e.g. from a broadcast channel and the Internet
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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]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
- H04N21/845—Structuring of content, e.g. decomposing content into time segments
- H04N21/8451—Structuring of content, e.g. decomposing content into time segments using Advanced Video Coding [AVC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
Definitions
- the present invention relates to a broadcast system. More specifically, the present invention relates to a method and / or apparatus for transmitting and receiving high definition UHD broadcasting content in a digital broadcasting system.
- UHD broadcast content provides higher quality content than SD or HD broadcast content, so the amount of data to be transmitted is relatively large.
- the current terrestrial wave can transmit data up to 19.39Mbps since the 8-VSB modulation method is used, and the cable can transmit data up to 38.8Mbps using the J.83b method.
- the basic UHD service is simply transmitted through a terrestrial broadcasting network or a cable network, about 20Mbps is expected. Therefore, in order to provide a high definition UHD service other than the basic UHD service, there is a problem in that an additional channel is allocated or a transmission method is changed.
- the multimedia service environment is a mixture of heterogeneous networks (3G / LTE, Wi-Fi, wired LAN, terrestrial broadcasting network, cable network) with various bandwidths, protocols and quality of service (QoS), and user terminals (TV, desktop, laptop, tablet).
- 3G / LTE, Wi-Fi, wired LAN, terrestrial broadcasting network, cable network with various bandwidths, protocols and quality of service (QoS), and user terminals (TV, desktop, laptop, tablet).
- QoS quality of service
- TV desktop, laptop, tablet
- An object of the present invention is to provide a method and / or an apparatus for transmitting and receiving high definition UHD broadcasting contents through a terrestrial broadcasting network and / or an internet network.
- an object of the present invention is to provide a method and / or apparatus for transmitting and receiving high definition UHD broadcast content encoded using an extensible codec.
- an object of the present invention is to provide a method for signaling information on high definition UHD broadcast content encoded using a scalable codec.
- a method for transmitting high definition UHD broadcasting content comprising: encoding data of a base layer constituting a basic UHD broadcast program and providing a high quality UHD broadcast program based on the data of the base layer. Encoding data of at least one enhancement layer including additional information; broadcasting network program metadata including information about a high definition UHD broadcasting program transmitted through a broadcasting network and information about the high definition UHD broadcasting program transmitted through an IP network.
- Encoding IP network program metadata including, packetizing data of the encoded base layer and / or data of a first enhancement layer of the one or more enhancement layers into a broadcast packet, the encoded one or more enhancements Data in the second enhancement layer of the layer Further comprising: packetizing the IP packet, the method comprising the broadcast packets transmitted via a broadcasting network and a step of the IP packet transmitted over an IP network.
- the broadcast network program metadata includes program type information indicating a type of UHD broadcast program that can be finally provided by data of a layer transmitted through a broadcast network, and layer number information indicating a number of layers transmitted through a broadcast network. At least one of layer combination number information indicating a number of layer combinations transmitted through a broadcasting network and layer combination type information indicating combination information of layers transmitted through a broadcasting network.
- the broadcast network program metadata includes layer identification information for identifying each layer transmitted through the broadcast network, layer encoding type information indicating a type of codec used in each layer transmitted through the broadcast network, and each transmitted through the broadcast network.
- layer encoding type information indicating a type of codec used in each layer transmitted through the broadcast network
- each transmitted through the broadcast network At least one of the layer unit stream packet identification information indicating the packet identification information of the unit stream including the data of the layer and the scalable type information indicating the scalable item that can be simultaneously provided by each layer transmitted through the broadcasting network. It includes.
- the IP network program metadata includes scalable flag information indicating whether data of a layer transmitted through the IP network is encoded with a scalable codec, and an IP indicating the number of layers transmitted through the IP network. At least one of network layer number information, IP network layer combination number information indicating the number of layer combinations transmitted through the IP network, and IP network layer combination type information indicating the combination information of layers transmitted through the IP network.
- the IP network program metadata includes IP network layer identification information for identifying each layer transmitted through the IP network, and IP representing packet identification information of a unit stream including data of each layer transmitted through the IP network. At least one of the network stream packet identification information and the Internet connection information indicating the information on the transmission path of the data of each layer transmitted through the IP network.
- the Internet connection information includes IP address type information indicating the type of IP address capable of receiving data of each layer transmitted through an IP network, and an IP address having an IP address type according to the IP address type information. At least one of the IP address information indicating and the port number information indicating the UDP port number capable of receiving data of each layer transmitted through the IP network.
- the broadcast network program metadata and the IP network program metadata are included in PMT, SDT, EIT, TVCT, or CVCT in the form of a descriptor and transmitted.
- An apparatus for receiving high definition UHD broadcasting content provides a high definition UHD broadcasting program based on data of a base layer constituting a basic quality UHD broadcasting program and / or data of the base layer through a broadcasting network.
- a receiver the base layer received by the first receiver And / or a first decoder for decoding data of the first enhancement layer, a second decoder for decoding data of the second enhancement layer received by the second receiver and the data of the decoded base layer and one or more enhancements. And a reproduction unit for reproducing the high definition UHD broadcast program provided by the hierarchical data.
- the broadcast network program metadata includes program type information indicating a type of UHD broadcast program that can be finally provided by data of a layer received through a broadcast network, and layer number information indicating a number of layers received through a broadcast network. At least one of the layer combination number information indicating the number of layer combinations received through the broadcasting network and the layer combination type information indicating the combination information of the layers received through the broadcasting network.
- the broadcast network program metadata includes layer identification information for identifying each layer received through the broadcast network, layer encoding type information indicating a type of codec used in each layer received through the broadcast network, and each received through the broadcast network.
- layer encoding type information indicating a type of codec used in each layer received through the broadcast network
- the IP network program metadata includes scalable flag information indicating whether data of a layer received through the IP network is encoded with a scalable codec, and an IP indicating the number of layers received through the IP network. At least one of network layer number information, IP network layer combination number information indicating the number of layer combinations received through the IP network, and IP network layer combination type information indicating the combination information of the layers received through the IP network.
- the IP network program metadata is IP network layer identification information for identifying each layer received through the IP network, and IP representing packet identification information of a unit stream including data of each layer received through the IP network. At least one of the network stream packet identification information and the Internet connection information indicating the information on the transmission path of the data of each layer received through the IP network.
- the Internet connection information includes IP address type information indicating an IP address type for obtaining data of each layer received through an IP network, and an IP address having an IP address type according to the IP address type information. At least one of the IP address information indicating and the port number information indicating the UDP port number to obtain the data of each layer received through the IP network.
- the broadcast network program metadata and the IP network program metadata are received in a PMT, SDT, EIT, TVCT or CVCT in the form of a descriptor.
- hi-definition UHD broadcast content can be layered into a plurality of layers to transmit and receive for each layer.
- the present invention by transmitting high-definition UHD broadcast content for each layer, it is possible to receive / reproduce high-definition UHD broadcast content in various terminal devices.
- FIG. 1 is a diagram illustrating a method of transmitting and receiving high definition UHD broadcasting content (advanced UHD broadcasting content) through a terrestrial broadcasting network or a cable network according to an embodiment of the present invention.
- FIG. 2 is a diagram illustrating a method of transmitting and receiving advanced UHD broadcasting content through an existing broadcasting network (terrestrial broadcasting network or cable network) and an IP network according to an embodiment of the present invention.
- FIG. 3 is a diagram illustrating a method for independently transmitting and receiving advanced UHD broadcast content and essential UHD broadcast content through an IP network and an existing broadcast network (terrestrial broadcast network or cable network) according to an embodiment of the present invention.
- FIG. 4 is a diagram illustrating a method of configuring a scalable UHD service according to an embodiment of the present invention.
- FIG. 5 is a diagram illustrating an apparatus for transmitting high definition UHD broadcast content according to an embodiment of the present invention.
- FIG. 6 illustrates a hierarchical structure of an IP packet according to an embodiment of the present invention.
- FIG. 7 is a diagram illustrating an apparatus for receiving high definition UHD broadcasting contents when high definition UHD broadcasting contents are layered and transmitted through an existing broadcasting network (terrestrial broadcasting network or cable network) and an IP network according to an embodiment of the present invention.
- FIG. 8 is a diagram illustrating a high definition UHD broadcast content receiving apparatus when high definition UHD broadcast content is transmitted as a single layer stream according to an embodiment of the present invention.
- FIG. 9 is a diagram illustrating syntax of a broadcast network program descriptor (UHD program descriptor) including broadcast network program metadata according to an embodiment of the present invention.
- FIG. 10 is a diagram illustrating information included in a broadcast network program descriptor when a broadcast network program descriptor (UHD program descriptor) is included in a PMT according to an embodiment of the present invention.
- FIG. 11 is a diagram illustrating a relationship between a layer combination and the number of broadcast programs provided by the layer combination, according to an embodiment of the present invention.
- FIG. 12 is a diagram illustrating a type of UHD broadcast program indicated by layer program type information (base_layer_program_type) according to an embodiment of the present invention.
- FIG. 13 is a diagram illustrating scalable type information (scalable_type) according to an embodiment of the present invention.
- layer_combination_type layer combination type information
- FIG. 15 is a diagram illustrating syntax of a broadcasting network program descriptor (UHD program descriptor) including broadcasting network program metadata to which layer combination number information (num_layer_combination) is added according to an embodiment of the present invention.
- UHD program descriptor UHD program descriptor
- number_layer_combination layer combination number information
- FIG. 16 is a diagram illustrating a relationship between a layer combination and the number of broadcast programs provided by the layer combination, according to another embodiment of the present invention.
- FIG. 16 is a diagram illustrating a relationship between a layer combination and the number of broadcast programs provided by the layer combination, according to another embodiment of the present invention.
- FIG. 17 is a diagram illustrating syntax of an IP network program descriptor including IP network program metadata according to an embodiment of the present invention.
- layer_path layer path information
- FIG. 19 illustrates a high dynamic range (HDR) region according to an embodiment of the present invention.
- FIG. 20 is a diagram illustrating syntax of internet connection information (ip_linkage_info) according to an embodiment of the present invention.
- IP_address_type IP address type information
- FIG. 22 is a diagram illustrating syntax of a program map table (PMT) according to an embodiment of the present invention.
- FIG. 23 is a diagram illustrating syntax of a service description table (SDT) according to an embodiment of the present invention.
- SDT service description table
- EIT event information table
- FIG. 25 is a diagram illustrating syntax of a terrestrial virtual channel table (TVCT) according to an embodiment of the present invention.
- TVCT terrestrial virtual channel table
- FIG. 26 is a diagram illustrating syntax of a cable virtual channel table (CVCT) according to an embodiment of the present invention.
- CVCT cable virtual channel table
- FIG. 27 is a diagram illustrating a method for transmitting high quality UHD broadcast content according to an embodiment of the present invention.
- UHD TV Ultra High Definition TV
- UHD means broadcasting that is four times clearer than full HD broadcasting. While HD pores look faint in human pores, UHD class can see not only pores but also fluffy young children.
- Essential UHD means relative quality compared to Advanced UHD, which will be described later, and refers to UHD providing basic quality.
- Essential UHD may be referred to as basic UHD.
- Advanced UHD refers to UHD with improved resolution, frame rate, color gamut, etc. compared to Essential UHD described above. Advanced UHD may be referred to as high definition UHD.
- High Efficiency Video Coding is a high-efficiency video coding standard that offers the same video quality with approximately twice the compression rate compared to traditional H.264 / MPEG-4 AVC technology.
- Scalable HEVC is a video coding technique that adds scalability to the above-described HEVC compression technique.
- TS Transport Stream
- Transport stream is an acronym for MPEG transport stream and means a communication protocol for audio, video, and data transmission.
- TS may be named a transport stream.
- VSB Vinyl Side Band
- Quadrature Amplitude Modulation corresponds to one of modulation schemes of radio waves and is a modulation scheme using a combination of amplitude and phase.
- Program Clock Reference refers to reference time information used by a system when data is compressed and transmitted.
- Decoding Time Stamp refers to information that designates a time to be decoded in order to prevent inconsistency between video and audio when a video signal and an audio signal are compressed and transmitted.
- PTS Presentation Time Stamp
- PSI / SI Program Specific Information / Service Information
- PSIP Program and System Information Protocol
- Real-time Transport Protocol is a transport layer communication protocol for transmitting and receiving voice and video in real time.
- UDP User Datagram Protocol
- UDP User Datagram Protocol
- IP Internet Protocol
- FIG. 1 is a diagram illustrating a method of transmitting and receiving high definition UHD broadcasting content (advanced UHD broadcasting content) through a terrestrial broadcasting network or a cable network according to an embodiment of the present invention.
- a method for transmitting and receiving advanced UHD broadcasting content through a terrestrial broadcasting network or a cable network includes encoding basic UHD data (Essential UHD data) (S1010) (S1020), and advanced UHD data (S1030).
- Essential UHD data (S1010) refers to data constituting the UHD content having a basic specification.
- Advanced UHD data S1030 refers to data constituting high definition UHD content. That is, it may mean UHD data having an improved image quality than the aforementioned Essential UHD data.
- the essential UHD data may be encoded by the HEVC method.
- the Advanced UHD data may be encoded by the SHVC method.
- Essential UHD data may be referred to in the process of encoding Advanced UHD data.
- the essential UHD data and the advanced UHD data may be multiplexed into one transport stream.
- the step S1050 of multiplexing the transport stream may be omitted or replaced with another step.
- the above-described multiplexing step (S1050) may be omitted or replaced with another step.
- step S1060 the UHD data multiplexed into the transport stream may be modulated by various modulation methods and transmitted to the receiving end.
- the transport stream modulated and transmitted in the demodulation step S1070 may be demodulated.
- the demodulated transport stream in the demultiplexing step S1080 may be demultiplexed into a plurality of unit streams.
- the essential UHD data may be decoded by the HEVC scheme.
- the advanced UHD data may be decoded by the SHVC scheme.
- Essential UHD data may be referred to in the process of decoding Advanced UHD data.
- the decoded Essential UHD data may be reproduced by the Essential UHDTV.
- the decoded Advanced UHD data may be decoded by the high definition UHDTV.
- This figure shows an embodiment of transmitting UHD data through a terrestrial broadcasting network or a cable network using the SHVC scheme to provide an advanced UHD service.
- the basic Essential UHD data is encoded in the base layer, and the data constituting the remaining Advanced UHD content can be encoded in the enhancement layer.
- the encoded Essential UHD data and the encoded Advanced UHD data may be transmitted to the receiver through the same channel or different channels.
- FIG. 2 is a diagram illustrating a method of transmitting and receiving advanced UHD broadcasting content through an existing broadcasting room (terrestrial broadcasting network or cable network) and an IP network according to an embodiment of the present invention.
- the figure shows an embodiment of transmitting Advanced UHD content and Essential UHD content using an existing broadcasting network (terrestrial broadcasting network or cable network) and an IP network (Internet network), that is, two different networks.
- the basic Essential UHD data is encoded in a base layer, and the data constituting the remaining Advanced UHD content can be encoded in an enhancement layer.
- the encoded Essential UHD data and the encoded Advanced UHD data may be transmitted to the receiver through different networks.
- Advanced UHD data encoded with an enhancement layer may be multiplexed into a transport stream.
- the multiplexed transport stream may be packetized in the form of Internet Protocol (IP) in the IP Muxing step (S2010).
- IP Internet Protocol
- the IP packet generated by the IP Muxng step S2010 may be transmitted to the receiving end through the Internet.
- the transport stream may be extracted by demodulating the received IP packet and removing the IP header.
- FIG. 3 is a diagram illustrating a method for independently transmitting and receiving advanced UHD broadcast content and essential UHD broadcast content through an IP network and an existing broadcast network (terrestrial broadcast network or cable network) according to an embodiment of the present invention.
- a method for independently transmitting and receiving advanced UHD broadcast content and essential UHD broadcast content through an IP network and a conventional broadcasting network (terrestrial broadcasting network or cable network), respectively, the existing broadcasting network (terrestrial broadcasting network or cable network) and In each IP network (Internet network), UHD broadcasting is serviced, and the user can select the desired service from the two services transmitted through each network to watch the UHD broadcasting.
- IP network Internet network
- Essential UHD content is encoded by the HEVC scheme, and the encoded Essential UHD content may be multiplexed into one transport stream along with other unit streams.
- the multiplexed transport stream may be modulated by various modulation methods and transmitted to the receiving end.
- the receiver can demodulate the received Essential UHD content and demultiplex the multiplexed transport stream.
- Essential UHD content extracted through demultiplexing can be decoded by HEVC and decoded Essential UHD content can be played on Essential UHDTV.
- Advanced UHD content is encoded by the HEVC scheme and the encoded Advanced UHD content can be multiplexed into one transport stream along with other unit streams.
- the process of multiplexing into the transport stream may be omitted or replaced with another process.
- the multiplexed transport stream may be packetized in the form of an internet protocol.
- the generated IP packet may be transmitted to the receiving end through the internet network.
- the transport stream may be extracted by demodulating the IP packet received at the receiving end and removing the IP header.
- Advanced UHD content can be extracted by demultiplexing the transport stream.
- the process of demultiplexing the transport stream may be omitted or replaced with another process.
- the extracted advanced UHD content may be decoded by the HEVC scheme, and the decoded advanced UHD content may be played on a high definition UHDTV.
- each block is replaced with the description of each step constituting a method for transmitting and receiving the above-described advanced UHD broadcast content through a terrestrial broadcasting network or a cable network.
- FIG. 4 is a diagram illustrating a method of configuring a scalable UHD service according to an embodiment of the present invention.
- the figure 4010 on the left side of the figure shows a hierarchical structure in which UHD content is divided into a base layer signal and an enhancement layer 2 signal, which are essential signals, to provide UHD content.
- An embodiment of encoding a layer (layer) signal using the SHVC scheme is described.
- enhancement layer 2 may mean an enhancement signal for increasing the frame rate in relation to the base layer.
- a base layer signal and one enhancement layer 2 signal are required to provide Service 2
- a base layer signal and two enhancement layer 2 signals are required to provide Service 3.
- the transmitter may signal that enhancement layer 2 is an enhancement signal regarding a frame rate through broadcast network program metadata or IP network program metadata, which will be described later, and signal level information and frame rate information of a base layer or enhancement layer.
- the receiver may distinguish which enhancement signal is an enhancement layer signal received through broadcast network program metadata or IP network program metadata, which will be described later.
- the figure 4020 on the right side differs from the figure 4010 on the left side in the way of configuring the UHD service.
- Service 2 may be provided by an enhancement layer 2 signal for the base layer and the UHD-D service.
- Service 3 may be provided by enhancement layer 3 signals for base layer and UHD-B services.
- the enhancement layer 2 signal for the UHD-D service is an enhancement signal for increasing the frame rate in relation to the base layer, and the enhancement layer 3 signal for the UHD-B service increases the bit-depth in the relationship with the base layer. Is the enhancement signal.
- FIG. 5 is a diagram illustrating an apparatus for transmitting high definition UHD broadcast content according to an embodiment of the present invention.
- the high definition UHD broadcasting content may be transmitted by being divided into a base layer and an enhancement layer or may be transmitted in one single stream (S5120).
- the high definition UHD broadcast content may be layered into the base layer and one or more enhancement layers and encoded using the SHVC scheme.
- the video stream of the high definition UHD broadcast content may be encoded using the HEVC scheme, and PSI / SI or PSIP information may be transmitted through an existing broadcast network (terrestrial broadcast network or cable network).
- the base layer indicated in the figure may mean one base layer or may mean a layer including a base layer and one or more enhancement layers.
- the enhancement layer indicated in the figure may mean one enhancement layer or a layer including one or more enhancement layers.
- High-definition UHD broadcast content may be transmitted only to the IP network, it may be divided into the existing broadcast network and the IP network (S5130, S5140).
- An apparatus for transmitting high definition UHD broadcasting content includes a first SHVC encoder (SHVC Encoder for base layer; 5010), a first packet generator for SHVC (5020), and a first multiplexer (MPEG-2).
- IP MUX for HEVC IP MUX for HEVC
- the first SHVC encoder 5010 may encode data of the base layer constituting the basic UHD broadcast program through the SHVC scheme.
- the first SHVC encoder may use an encoding scheme other than the SHVC scheme.
- the first SHVC encoder may encode data of one or more enhancement layers including additional information necessary to provide a high quality UHD broadcast program based on the data of the base layer as well as the data of the base layer described above.
- the first SHVC encoder is an IP network including broadcasting network program metadata (UHD program descriptor) including information about a high definition UHD broadcasting program transmitted through a broadcasting network and / or information about a high definition UHD broadcasting program transmitted through an IP network. It may include a system encoder (not shown) for encoding the program metadata (enhancement program descriptor).
- the first packet generator 5020 may generate a packetized elementary stream (PES) by dividing an encoded unit stream (ES) into a predetermined size.
- the PES may include 33 bits of Decoding Time Stamp (DTS) and Presentation Time Stamp (PTS) information according to a system clock 5050.
- the first packet generator may packetize data to be transmitted to a terrestrial broadcasting network or a cable network into a broadcast packet.
- the first packet generator may packetize the encoded base layer data and / or data of the first enhancement layer among one or more enhancement layers into a broadcast packet.
- the above-described data of the first enhancement layer may refer to data of the enhancement layer transmitted to the terrestrial broadcasting network or the cable network when a plurality of the above enhancement layers exist.
- the first enhancement layer does not mean one enhancement layer among a plurality of enhancement layers, but rather an enhancement layer transmitted through a broadcasting network among several enhancement layers.
- the first enhancement layer may mean one or more enhancement layers. have.
- the first multiplexer (MPEG-2 TS MUX for SHVC) 5030 may generate a single transport stream (TS) by multiplexing an audio / video PES, a PSI / SI, a private section of PSIP information, and the like. .
- the modulator 5040 may modulate and transmit the generated transport stream using a VSB (Vestigial Side Band) or QAM (Quadrature Amplitude Modulation) method.
- the modulator may use a modulation method other than VSB and QAM.
- the system clock 5050 may mean a system reference clock.
- the system clock may insert time information such as PCR, DTS, and PTS into the PES and the TS.
- time information such as PCR, DTS, and PTS
- both the streams of the base layer and the streams of the enhancement layer contain DTS and PTS information, and the streams of both layers can be synchronized using them.
- information associated with this may be generated by passing a PTS value to be synchronized with the stream of the enhancement layer to the PSI / SI or PSIP.
- the second SHVC encoder 5060 encodes data of one or more enhancement layers including additional information necessary to provide a high quality UHD broadcast program based on the data of the above-described base layer through the SHVC scheme. can do.
- the second SHVC encoder may use an encoding scheme other than the SHVC scheme.
- the first IP multiplexer 5070 may packetize the TS in IP form.
- the first IP multiplexer may generate an IP packet by adding an RTP header, a UDP header, and an IP header to the TS packet.
- the first IP multiplexer may generate a PES by dividing the encoded unit stream into a predetermined size, and multiplexing the generated audio / video PES, PSI / SI, and private sections of the PSIP information by using a single transport stream.
- Generate an IP packet by creating a TS) and adding an IP header to the generated TS.
- the first IP multiplexer may packetize data of the second enhancement layer among the encoded one or more enhancement layers into an IP packet.
- the above-described second enhancement layer data may mean data of the enhancement layer transmitted to the IP network when a plurality of the above-described enhancement layers exist. Therefore, the second enhancement layer does not mean one enhancement layer among a plurality of enhancement layers, but rather an enhancement layer transmitted through an IP network among several enhancement layers.
- the second enhancement layer may mean one or more enhancement layers. Can be.
- the HEVC encoder 5080 may encode the high definition UHD broadcast content through the HEVC scheme when the high definition UHD broadcast content is transmitted as a single stream without being layered and transmitted according to an embodiment of the present invention.
- the above-described HEVC encoder may be replaced with another encoder using another encoding scheme.
- the second packet generator 5090 may generate a packetized elementary stream (PES) by dividing an encoded unit stream (ES) into a predetermined size.
- PES packetized elementary stream
- the second multiplexer (MPEG-2 TS MUX for HEVC) 5100 may generate a transport stream (TS) by multiplexing an audio / video PES, a PSI / SI, a private section of PSIP information, and the like. .
- the third packet generator for HEVC through IP 5110 may generate a packetized elementary stream (PES) by dividing an encoded unit stream (ES) into a predetermined size.
- PES packetized elementary stream
- the second IP multiplexer (IP MUX for HEVC) 5120 may packetize the TS in IP form.
- the second IP multiplexer may generate an IP packet by sequentially adding an RTP header, a UDP header, and an IP header to the encoded unit stream.
- the second IP multiplexer may generate the PES by dividing the encoded unit stream into a predetermined size, and multiplexing the generated audio / video PES, PSI / SI, and private sections of the PSIP information to one transport stream.
- Generate an IP packet by creating a TS) and adding an IP header to the generated TS.
- the apparatus for transmitting high definition UHD broadcast content may further include a system information encoder (not shown).
- the system information encoder may encode PSI / SI or PSIP information and the like, and may encode broadcast network program metadata and IP network program metadata, which will be described later.
- FIG. 6 illustrates a hierarchical structure of an IP packet according to an embodiment of the present invention.
- an elementary stream (ES) constituting the high definition UHD content is packetized in the form of an IP packet to the receiving side. Can be sent.
- IP network Internet network
- ES elementary stream
- an IP packet may be generated by sequentially adding an RTP header, a UDP header, and an IP header to a unit stream constituting high definition UHD content (6010).
- the PES Packetized Elementary Stream
- the IP packet may be generated by creating a Steam (TS) and adding an IP header to the generated TS.
- the RTP header means a header of a packet generated by Real Time Protocol (RTP), which means a protocol used for real-time media data delivery.
- RTP Real Time Protocol
- SSRC Synchronization Source
- CSRC Contributing Source
- SSRC Synchronization Source
- CSRC Contributing Source
- the UDP header refers to a header of a packet generated by User Datagram Protocol (UDP), a communication protocol that provides only limited services when messages are exchanged between computers in a network using IP.
- UDP User Datagram Protocol
- DP Destination Port Number
- UDP UDP port number of a destination to which data is transmitted. And, it is possible to confirm whether or not the data arriving at the destination is damaged by the UDP checksum.
- the IP header means a header of a packet generated by IP (Internet Protocol), which is a protocol used when data is transmitted through an internet network.
- IP Internet Protocol
- DIA destination IP address
- SIP Source IP Address
- DIA Destination IP Address
- FIG. 7 is a diagram illustrating an apparatus for receiving high definition UHD broadcasting contents when high definition UHD broadcasting contents are layered and transmitted through an existing broadcasting network (terrestrial broadcasting network or cable network) and an IP network according to an embodiment of the present invention.
- High definition UHD broadcasting content may be transmitted by being layered into a base layer and one or more enhancement layers.
- the apparatus for receiving high definition UHD broadcasting contents according to an embodiment of the present invention is provided for each network (broadcasting network or IP network) transmitted. Data of each layer can be received separately.
- the receiving apparatus may include one or more pieces of additional information necessary to provide a high definition UHD broadcast program based on data of a base layer and / or base layer data constituting the basic UHD broadcast program.
- the data of the enhancement layer may be received through the broadcast network, and the reception apparatus may receive data of one or more enhancement layers that are not received through the broadcast network among the one or more enhancement layers described above through the IP network.
- the enhancement layer received through the broadcasting network among the entire enhancement layers may be called a first enhancement layer
- the enhancement layer received through the IP network among all the enhancement layers may be called a second enhancement layer.
- An apparatus for receiving high definition UHD broadcasting content includes a demodulator (7010), a first TS demultiplexer (MPEG-2 TS DEMUX; 7020), a system information decoder (PSI / SI or PSIP Decoder); 7030), first decoder for HEVC / SHVC; 7040, system clock (7050), synchronizer (7060), IP demultiplexer (IP DEMUX; 7070), second TS demultiplexer (MPEG-2 TS DEMUX for IP; 7080) and / or a second decoder (Decoder for SHVC).
- the apparatus for receiving high definition UHD broadcast content may further include a first receiver (not shown) and / or a second receiver (not shown).
- the first receiver may receive data of the base layer and / or data of the first enhancement layer transmitted through the broadcasting network.
- the data of the base layer is data constituting the basic quality UHD broadcast program
- the data of the first enhancement layer means data of the enhancement layer transmitted through the broadcasting network among one or more enhancement layer data
- the enhancement layer is data of the base layer
- the layer may include a layer including additional information necessary to provide a high quality UHD broadcast program based on the.
- the first receiver may receive broadcast network program metadata and / or IP network program metadata, which will be described later.
- the second receiver may receive data of the second enhancement layer transmitted through the IP network (Internet network).
- the data of the second enhancement layer may refer to data of the enhancement layer transmitted through the IP network among data of one or more enhancement layers.
- the first enhancement layer and the second enhancement layer described above may be one or more.
- the first receiver may be included in the demodulator 7010 and the second receiver may be included in the IP demultiplexer 7070.
- the demodulator 7010 may obtain a transport stream (TS) by demodulating the received VSB or QAM signal.
- TS transport stream
- the first TS demultiplexer (MPEG-2 TS DEMUX) 7020 may demultiplex the received TS to extract an audio / video unit stream, PSI / SI information, PSIP information, PCR, DTS, or PTS.
- the first TS demultiplexer may refer to a PID (Packet ID) in the process of demultiplexing the TS.
- the extracted PCR may be used to correct the system clock of the receiving device.
- the DTS delivered to the synchronizer 7060 is used as information specifying the decoding time in the VDEC buffer (Video Decoder Component buffer), and the PTS delivered to the synchronizer 7060 is used as the information specifying the output time in the video buffer. Can be.
- the system information decoder (PSI / SI or PSIP Decoder) 7030 may decode information on a stream or service included in the received PSI / SI or PSIP information.
- Broadcast network program metadata and IP network program metadata, which will be described later, may be included in PSI / SI or PSIP and decoded by a system information decoder.
- the first decoder for HEVC / SHVC 7040 may decode data of the base layer and / or data of the first enhancement layer received by the first receiver.
- the first decoder may decode the stream of the base layer and / or the first enhancement layer encoded using the HEVC or SHVC scheme into a video image.
- the system clock 7050 may refer to a system reference clock. Both the base layer and / or enhancement layer streams contain DTS and PTS information, and with this the streams of both layers can be synchronized.
- the synchronizer 7060 may synchronize the base layer and the enhancement layer by using the DTS / PTS received from the first TS demultiplexer and the second TS demultiplexer and the corrected PCR received from the system clock.
- the IP demultiplexer 7070 may extract a TS packet from an IP packet received through the Internet network.
- an appropriate file format can be used instead of IP packets.
- the IP demultiplexer may be replaced with an ISO file decoder.
- the IP demultiplexer can transmit timing information such as DT (Decoding Time) and CT (Continuous Time) for synchronization and random access along with the time scale to the synchronizer.
- the second TS demultiplexer (MPEG-2 TS DEMUX for IP) 7080 may demultiplex the received TS to extract an audio / video unit stream, a DTS or a PTS.
- the DTS delivered to the synchronizer 7060 is used as information specifying the decoding time in the VDEC buffer (Video Decoder Component buffer), and the PTS delivered to the synchronizer 7060 is used as the information specifying the output time in the video buffer. Can be.
- VDEC buffer Video Decoder Component buffer
- PTS delivered to the synchronizer 7060 is used as the information specifying the output time in the video buffer.
- high-definition UHD broadcasting content according to an embodiment of the present invention is transmitted through an internet network, there may be a case where a packet is transmitted through PES / TS / IP, and a case where a packet is transmitted through RTP / UDP / IP may exist. have.
- the second TS demultiplexer may be replaced by an RTP /
- the second decoder for SHVC may decode data of the second enhancement layer received by the second receiver.
- the second decoder may decode the stream of the second enhancement layer encoded using the HEVC or SHVC scheme into a video image.
- the second decoder may decode the stream of the second enhancement layer using the upscailing (upsampling) base layer data.
- the apparatus for receiving high definition UHD broadcast content may further include a playback unit (not shown).
- the playback unit may mean an advanced UHD display illustrated in the figure.
- the reproduction unit may reproduce the high definition UHD broadcast program using the decoded base layer data and one or more enhancement layer data.
- a high definition UHDTV capable of playing high definition UHD broadcast content according to an embodiment of the present invention may reproduce a high definition UHD broadcast program provided by data of a received base layer and data of all received enhancement layers.
- FIG. 8 is a diagram illustrating a high definition UHD broadcast content receiving apparatus when high definition UHD broadcast content is transmitted as a single layer stream according to an embodiment of the present invention.
- An apparatus for receiving high definition UHD broadcasting content includes an IP demultiplexer (IP DEMUX; 8010), a TS demultiplexer (MPEG-2 TS DEMUX; 8020), and / or a decoder for HEVC. do.
- IP DEMUX IP demultiplexer
- MPEG-2 TS DEMUX MPEG-2 TS DEMUX
- the IP demultiplexer 8010 may extract a TS packet from an IP packet received through the Internet network.
- an appropriate file format can be used instead of IP packets.
- the IP demultiplexer may be replaced with an ISO file decoder.
- the TS demultiplexer 8020 may demultiplex the TS to extract an audio / video unit stream, PSI / SI information, or PSIP information.
- the TS demultiplexer may refer to a PID (Packet ID) in the process of demultiplexing the TS.
- PID Packet ID
- the TS demultiplexer may be replaced by an RTP / UDP demultiplexer or an RTP / UDP depacketizer.
- a decoder for HEVC may decode a high quality UHD stream (single stream) encoded by HEVC into a video image.
- the decoder may decode the HEVC scheme in the case of a single stream encoded by the HEVC encoding scheme.
- FIG. 9 is a diagram illustrating syntax of a broadcast network program descriptor (UHD program descriptor) including broadcast network program metadata according to an embodiment of the present invention.
- the broadcast network program descriptor includes descriptor_tag information, descriptor_length information, and / or broadcast network program metadata.
- the descriptor_tag information identifies that the descriptor is a descriptor including broadcast network program metadata.
- the descriptor_length information indicates the length of the descriptor.
- Broadcast network program metadata includes program type information (base_layer_program_type), number of layers (num_layer), layer identification information (layer_ID), layer encoding type information (stream_type), layer unit stream packet identification information (elementary_PID), and scalable type information (scalable_type). ), Layer combination type information (layer_combination_type), combination resolution information (combination_resolution), combination frame rate information (combination_frame_rate), combination bit depth information (combination_bit_depth), combination chroma subsampling information (combination_chroma_subsampling), combination gamut information (combination_color_gamut), and / Or combination brightness region information (combination_HDR).
- the layer program type information indicates the type of UHD broadcast program that can be finally provided by data of a layer transmitted through a broadcast network.
- the layer transmitted through the broadcasting network includes at least one enhancement layer including additional information required to provide a high definition UHD broadcast program based on data of the base layer and / or base layer constituting the basic UHD broadcast program. Can be. Detailed description of the layer program type information will be described later.
- Layer number information indicates the number of layers transmitted through a broadcasting network. That is, the number of the base layer and the enhancement layer transmitted through the broadcast network. More specifically, the above-described enhancement layer may mean the first enhancement layer. For example, when a UHD broadcast program is composed of a base layer, an enhancement layer 1, and an enhancement layer 2, the value indicated by the layer number information is three. Here, the above-described enhancement layer 1 is different from the above-described first enhancement layer.
- the layer identification information (layer_ID) identifies each layer transmitted through the broadcast network. That is, the layer identification information may indicate an identification number for identifying each layer among layers transmitted through the broadcasting network. The layer identification information may serve to connect information about each layer transmitted to the broadcasting network with the corresponding layer. The same value is not assigned to the layer identification information and the IP network layer identification information included in the IP network program metadata to be described later.
- the layer encoding type information indicates the type of codec used in each layer transmitted through the broadcasting network.
- Hierarchical unit stream packet identification information indicates packet identification information of a unit stream including data of each layer transmitted through a broadcasting network. That is, the layer unit stream packet identification information may signal a PID (Packet ID) value of the unit stream corresponding to the layer identified by the layer identification information.
- PID Packet ID
- Scalable type information indicates a scalable item that can be simultaneously provided in each layer transmitted through a broadcasting network.
- the scalable type information may indicate a scalable item provided simultaneously in the layer identified by the layer identification information.
- the above expandable items include resolution, frame rate, bit depth, chroma subsampling, color gamut and high dynamic range (HDR). can do. Detailed description of the expandable type information will be described later.
- Layer combination type information indicates combination information of layers transmitted through a broadcasting network.
- the layer combination type information represents a numerical representation of a combination of a base layer and / or an enhancement layer constituting a high definition UHD broadcast program transmitted through a broadcasting network. Detailed description of the layer combination type information will be described later.
- Combination resolution information indicates the resolution provided when the layers transmitted to the broadcasting network are finally combined according to the layer combination type information.
- the combined resolution information may indicate 3840 * 2160.
- Combination frame rate information indicates a frame rate provided when the layers transmitted to the broadcasting network are finally combined according to the layer combination type information.
- the combined frame rate information may indicate 120 fps.
- the combination bit depth information indicates a bit depth provided when layers transmitted to the broadcasting network are finally merged according to the layer combination type information.
- the combination bit depth information may represent 12 bits.
- Combination chroma subsampling information indicates chroma subsampling information provided when layers transmitted to a broadcasting network are finally merged according to layer combination type information.
- the combined chroma subsampling information may indicate 4: 2: 2.
- the combination gamut information combination_color_gamut indicates gamut information provided when the layers transmitted to the broadcasting network are finally merged according to the layer combination type information.
- the combination gamut information may indicate BT.2020.
- Combination brightness area information indicates a brightness area (HDR) provided when the layers transmitted to the broadcasting network are finally combined according to the layer combination type information.
- the combined brightness region information may indicate conventional luminance capability. Detailed description of the above-described HDR will be described later.
- the broadcast network program metadata included in the broadcast network program descriptor may signal overall configuration information of UHDTV broadcast that should be provided at a program, channel, or service level.
- the broadcast network program metadata may include the number of streams constituting the program, information on a channel or service included in each stream, and / or synchronization related information for synchronization of each stream.
- the broadcast network program descriptor according to an embodiment of the present invention may be included in the program level descriptor of the PMT in the PSI, the channel level descriptor of the TVCT / CVCT in the PSIP, and the service level descriptor of the SDT in the SI.
- PMT program level descriptor of the PMT in the PSI
- channel level descriptor of the TVCT / CVCT in the PSIP channel level descriptor of the TVCT / CVCT in the PSIP
- SDT service level descriptor of the SI.
- the broadcast network program metadata included in the broadcast network program descriptor according to an embodiment of the present invention may include information about high definition UHD broadcast content transmitted through not only terrestrial broadcast networks but also network networks such as cable networks and IP networks.
- FIG. 10 is a diagram illustrating information included in a broadcast network program descriptor when a broadcast network program descriptor (UHD program descriptor) is included in a PMT according to an embodiment of the present invention.
- information provided by broadcast network program metadata included in a broadcast network program descriptor is as follows.
- the layer number information num_layer indicates 3, which indicates that the number of layers transmitted through the broadcasting network is three.
- the layer identification information indicates a value of 0 to identify a base layer.
- the layer encoding type information indicates a value of 0x24, which indicates that the codec used in the base layer is HEVC.
- the layer unit stream packet identification information indicates a value of 0x0501, which indicates that the PID of the unit stream including data of the base layer is 0x0501.
- the scalable type information indicates a value of 000000, which indicates that there is no scalable item that can be provided simultaneously by the base layer.
- the value indicated by the above-described layer encoding type information may indicate a value of 0x24 or 0x25 as a value for identifying a stream encoded in the HEVC scheme.
- the layer identification information indicates a value of 1 to identify that it is enhancement layer 1.
- the layer encoding type information indicates a value of 0x27, which indicates that the codec used in enhancement layer 1 is SHVC.
- the layer unit stream packet identification information indicates a value of 0x0502, which indicates that the PID of the unit stream including data corresponding to enhancement layer 1 is 0x0502.
- the scalable type information indicates a value of 010000, which indicates that a scalable item that can be simultaneously provided by the enhancement layer 1 is a frame rate. Detailed description of the expandable type information will be described later.
- the value indicated by the above-described layer encoding type information may indicate an 0x27, 0x28, 0x29 or 0x2A value as a value for identifying an enhancement layer stream when the SHVC codec is used.
- the layer identification information indicates a value of 3 to identify that it is enhancement layer 3.
- the layer encoding type information indicates a value of 0x27, which indicates that the codec used in enhancement layer 3 is SHVC.
- the layer unit stream packet identification information indicates a value of 0x0503, which indicates that the PID of a unit stream including data corresponding to enhancement layer 3 is 0x0503.
- the scalable type information indicates a value of 100100, indicating that scalable items simultaneously provided by the enhancement layer 3 are resolution and chroma subsampling. Detailed description of the expandable type information will be described later.
- the value indicated by the above-described layer encoding type information may indicate an 0x27, 0x28, 0x29 or 0x2A value as a value for identifying an enhancement layer stream when the SHVC codec is used.
- the layer combination type information indicates a value of 11010000, which means that the UHD broadcast program identified by the layer program type information is assigned to the base layer, enhancement layer 1, and the like. And enhancement layer 3. Detailed description of the layer combination type information (layer_combination_type) will be described later.
- the figure on the left shows a syntax of a PMT (Program Map Table).
- the descriptor () portion of the PMT may include broadcast network program metadata and IP network program metadata according to an embodiment of the present invention. have. Detailed description of the PMT will be described later.
- FIG. 11 is a diagram illustrating a relationship between a layer combination and the number of broadcast programs provided by the layer combination, according to an embodiment of the present invention.
- the broadcast network program descriptor (UHD program descriptor) according to an embodiment of the present invention includes the layer combination number information (num_layer_combination) to be described later and the layer combination type information is not described below the layer combination number information described above,
- One broadcast program indicated by the combination type information may be provided by one hierarchical combination. That is, hierarchical combinations may be provided to a plurality of broadcast programs.
- FIG. 12 is a diagram illustrating a type of UHD broadcast program indicated by layer program type information (base_layer_program_type) according to an embodiment of the present invention.
- Layer program type information base_layer_program_type may be referred to as UHD program type information UHD_program_type.
- the UHD broadcast program that can be finally provided by the layer transmitted through the broadcasting network has a resolution of 3840 * 2160. It is a UHD-A program with a frame rate of 30 fps, bit depth of 8 bits, chroma subsampling of 4: 2: 0, hue of BT.709, and brightness range of conventional HDR.
- the UHD broadcast program that can be finally provided by the layer transmitted to the broadcasting network has a resolution of 3840 * 2160, a frame rate of 60 fps, and a bit depth of 8 bit 4: It can be shown that it is a UHD-B program with 2: 0 chroma subsampling, BT.709 hue and a brightness range of conventional HDR.
- the UHD broadcast program that can be finally provided by the layer transmitted to the broadcasting network has a resolution of 3840 * 2160, a frame rate of 60 fps, and a bit depth of 10 bit 4: It can be shown that it is a UHD-C program with 2: 0 chroma subsampling, BT.709 hue and a brightness range of conventional HDR.
- the UHD broadcast program that can be finally provided by the layer transmitted to the broadcasting network has a resolution of 3840 * 2160, a frame rate of 120 fps, and a bit depth of 10 bit 4: It can be shown that it is a UHD-A program with 2: 0 chroma subsampling, BT.709 hue and a brightness range of conventional HDR.
- a value of 0100-0111 is a reserved value and can be used as a value indicating the type of another UHD broadcast program in the future.
- the layer program type information may be classified into a combination other than a combination of resolution, frame rate, bit depth, chroma subsampling, gamut, and HDR.
- the hierarchical program type information is not provided as a set, such as providing a combination of resolution, frame rate, bit depth, chroma subsampling, gamut, and HDR, and each item is individually provided. It can be provided separately, and several items can be bundled together.
- the UHD broadcast program may include a basic UHD broadcast program provided by the base layer and a high definition UHD broadcast program provided by the base layer and / or one or more enhancement layers.
- FIG. 13 is a diagram illustrating scalable type information (scalable_type) according to an embodiment of the present invention.
- Scalable type information indicates a scalable item that can be simultaneously provided in one layer.
- scalable video coding is provided for bit depth and frame rate.
- the extensible type information may indicate a value of 011000.
- the expandable items may include resolution, frame rate, bit depth, chroma subsampling, color gamut, and high dynamic range.
- Range may include other items, and specific items may be excluded from the above items.
- the transmitting side may simultaneously provide information on several expandable items.
- layer_combination_type layer combination type information
- the layer combination type information represents a combination of layers transmitted through a broadcasting network.
- the layer combination type information may indicate a value of 10100000.
- the layer combination type information is not assigned a value such as IP network layer combination type information included in IP network program metadata to be described later. That is, the values indicated by the layer combination type information and the IP network layer combination type information may be allocated without overlapping each other.
- a layer transmitted through a broadcasting network includes one base layer and three enhancement layers, and includes a broadcasting network program descriptor (UHD program descriptor) including the above-mentioned broadcasting network program metadata.
- UHD program descriptor broadcasting network program descriptor
- the IP network program descriptor including IP network program metadata which will be described later, is signaled for the remaining four bits. can do. For example, if the value indicated by the layer combination type information in the figure is 10100000, 0000 may be signaled by IP network combination type information to be described later.
- FIG. 15 is a diagram illustrating syntax of a broadcasting network program descriptor (UHD program descriptor) including broadcasting network program metadata to which layer combination number information (num_layer_combination) is added according to an embodiment of the present invention.
- UHD program descriptor UHD program descriptor
- number_layer_combination layer combination number information
- the broadcast network program descriptor includes information that can be included in the broadcast network program descriptor described above and / or layer combination number information (num_layer_combination) before the figure.
- the layer combination number information indicates the number of layer combinations transmitted through the broadcasting network. That is, the number of layer combination type information (layer_combination_type) is indicated.
- layer combination type information (layer_combination_type), combination resolution information (combination_resolution), combination frame rate information (combination_frame_rate), combination bit depth information (combination_bit_depth), combination chroma subsampling information (combination_chroma_subsampling), and combination gamut
- the information (combination_color_gamut) and / or the combination brightness region information (combination_HDR) may be included in the loop of the layer combination number information.
- the transmitting side may transmit information on all layer combinations that can be provided by the UHD broadcast program at one time.
- FIG. 16 is a diagram illustrating a relationship between a layer combination and the number of broadcast programs provided by the layer combination, according to another embodiment of the present invention.
- FIG. 16 is a diagram illustrating a relationship between a layer combination and the number of broadcast programs provided by the layer combination, according to another embodiment of the present invention.
- Layer combination type information (layer_combination_type) having values of 11010000, 10010000, and 10000000 may be generated by the combination of three layers included in the layer transmitted to the broadcasting network.
- the above-described broadcasting network program descriptor includes layer combination number information (num_layer_combination) and layer combination type information (layer_combination_type) is included in the repetition statement of the layer combination number information, it may be generated in the figure.
- One layer combination type information among the above-described three layer combination type information may be provided to one broadcast program.
- FIG. 17 is a diagram illustrating syntax of an IP network program descriptor including IP network program metadata according to an embodiment of the present invention.
- the IP network program descriptor includes descriptor_tag information, descriptor_length information, and / or IP network program metadata.
- the descriptor_tag information identifies that the descriptor is a descriptor including IP network program metadata.
- the descriptor_length information indicates the length of the descriptor.
- IP network program metadata includes scalable flag information (is_scalable_flag), Internet service availability information (is_IP_service_on), UHD program resolution information (UHD_resolution), UHD program frame rate information (UHD_frame_rate), UHD program bit depth information (UHD_bit_depth), and UHD program.
- scalable flag information is_scalable_flag
- Internet service availability information is_IP_service_on
- UHD program resolution information UHD_resolution
- UHD program frame rate information UHD_frame_rate
- UHD program bit depth information UHD_bit_depth
- Chroma subsampling information (UHD_chroma_subsampling), UHD program gamut information (UHD_color_gamut), UHD program brightness range information (UHD_HDR), Internet connection information (ip_linkage_info), channel connection information (channel_linkage_info), IP network layer count information (num_layer), IP network Layer identification information (layer_ID), IP network layer unit stream packet identification information (elementary_PID), layer path information (layer_path), service type information (service_type), IP network layer combination count information (num_layer_combination), IP network layer combination type information ( layer_combination_type), IP network layer combination resolution information (combination_resolution), IP network layer Sum frame rate information (combination_frame_rate), IP network layer combination bit depth information (combination_bit_depth), IP network layer combination chroma subsampling information (combination_chroma_subsampling), IP network layer combination gamut information (combination_color_gamut), and / or IP network layer combination
- Scalable flag information (is_scalable_flag) indicates whether data of a layer transmitted through an IP network is encoded with a scalable codec. When the value indicated by the expandable flag information is 1, it indicates that a stream encoded by a scalable video coding scheme is transmitted.
- the Internet service availability information (is_IP_service_on) may indicate a value of 1 when the Internet service availability information provides a UHD service through the Internet.
- UHD program resolution information indicates the resolution of a high definition UHD broadcast program when the high definition UHD broadcast program is provided by a single stream. Resolution information and frame rate information may be replaced with level information.
- UHD program frame rate information indicates a frame rate of a high definition UHD broadcast program when a high definition UHD broadcast program is provided by a single stream. Resolution information and frame rate information may be replaced with level information.
- UHD program bit depth information indicates a bit depth of a high definition UHD broadcast program when a high definition UHD broadcast program is provided by a single stream.
- UHD program chroma subsampling information indicates chroma subsampling of a high definition UHD broadcast program when the high definition UHD broadcast program is provided by a single stream.
- the UHD program gamut information indicates the color gamut of the high definition UHD broadcast program when the high definition UHD broadcast program is provided by a single stream. Color gamut can be classified into BT.709, partial BT.2020, BT.2020, DCI-P3, and so on.
- the UHD program brightness range information indicates the brightness range of the high definition UHD broadcast program when the high definition UHD broadcast program is provided by a single stream.
- Internet connection information represents information about a transmission path of data corresponding to each layer transmitted through an IP network.
- the Internet connection information may indicate information about the transmission path.
- the Internet connection information may indicate information on the above-described UHD data or enhancement data constituting the UHD when UHD data or enhancement data constituting the UHD is transmitted through the Internet network. Detailed description of the Internet connection information will be described later.
- Channel link information indicates information on another transmission path when data constituting UHD content is not transmitted through the Internet.
- the channel connection information indicates information on a transmission path other than the Internet network even when a high definition UHD broadcast program is transmitted in a single stream.
- the channel connection information may indicate information on the above-described UHD data or enhancement data constituting the UHD when UHD data or enhancement data constituting the UHD is transmitted through a transmission path other than the Internet network.
- the channel connection information may include network_type information, operator ID information, network_ID information, service_number information, transport_stream_id information, and / or source_id information.
- the network_type information may indicate the type of network such as cable, satellite, and terrestrial wave.
- the operator ID information may indicate an operator identification number.
- the network_ID information may indicate a network identification number.
- the service_number information may be replaced with channel identification information, major channel number or minor channel number.
- the transport_stream_id information may indicate identification information of a transport stream.
- the source_id information may indicate source identification information on which data is transmitted.
- the IP network layer number information indicates the number of layers transmitted through the IP network when the data of the layer transmitted through the IP network is encoded with a scalable codec.
- the IP network layer identification information may identify each layer transmitted through the IP network when the data of the layer transmitted through the IP network is encoded into a scalable codec.
- the IP network layer identification information may be assigned a value such that the IP network layer identification information does not overlap with the value assigned to the layer identification information included in the above-described broadcasting network program metadata. That is, if 0, 1, 2, 3 values are assigned to the layer identification information included in the above-mentioned broadcasting network program metadata, 4, 5, 6, 7 values are assigned to the IP network layer identification information included in the IP network program metadata. Can be.
- the IP network layer unit stream packet identification information (elementary_PID) indicates packet identification information of a unit stream including data of each layer transmitted through the IP network. That is, the IP network layer unit stream packet identification information may signal a PID (Packet ID) value of the unit stream corresponding to the layer identified by the IP network layer identification information.
- PID Packet ID
- the layer path information layer_path may indicate through which path each layer is transmitted. For example, a detailed description of the layer path information will be described later.
- the service type information represents a scalable item that can be simultaneously provided in each layer transmitted through the IP network.
- the same information as the scalable type information (scalable_type) included in the above-described broadcasting network program metadata may be indicated.
- scalable video coding is provided for bit-depth and frame rate in any enhancement layer transmitted to an IP network according to an embodiment of the present invention.
- the expandable type information may indicate a value of 011000.
- the expandable items may include resolution, frame rate, bit depth, chroma subsampling, color gamut, and brightness region ( High Dynamic Range (HDR) may include other items, and specific items may be excluded from the above items.
- High Dynamic Range (HDR) may include other items, and specific items may be excluded from the above items.
- the IP network layer combination number information may indicate the number of layer combinations that can be provided in a high definition UHD broadcast program when data of a layer transmitted through an IP network is encoded with a scalable codec.
- the IP network layer combination number information indicates the number of layer combinations transmitted through the IP network.
- the IP network layer combination type information indicates combination information of layers transmitted through the IP network when data of the layer transmitted through the IP network is encoded into a scalable codec.
- the value assigned to the IP network layer combination type information may be assigned a value such that it does not overlap with the value assigned to the layer combination type information included in the above-described broadcasting network program metadata. That is, if 4 bits are allocated to the layer combination type information included in the above-described broadcasting network program metadata, the remaining 4 bits may be allocated to the IP network layer combination type information included in the IP network program metadata.
- the remaining 4 bits are transmitted to the Internet network.
- the IP network layer combination type information indicating the combination information of the layer may be allocated.
- IP network layer combination resolution information indicates the resolution of a program provided by layers combined according to IP network layer combination type information.
- IP network layer combination frame rate information indicates a frame rate of a program provided by layers combined according to IP network layer combination type information.
- the IP network layer combination bit depth information indicates a bit depth of a program provided by layers combined according to the IP network layer combination type information.
- the IP network layer combination chroma subsampling information represents chroma subsampling of a program provided by layers combined according to IP network layer combination type information.
- the IP network layer combination scheme information indicates a color scheme of a program provided by layers combined according to the IP network layer combination type information.
- IP network layer combination brightness region information indicates a brightness region of a program provided by layers combined according to IP network layer combination type information.
- IP network program metadata included in the IP network program descriptor according to an embodiment of the present invention may signal configuration information of a broadcast program when a stream of an enhancement layer or an entire program is transmitted to the Internet network. have.
- the IP network program metadata may additionally signal information on the Internet network.
- the IP network program descriptor may be included in the program level descriptor of the PMT in the PSI, the channel level descriptor of the TVCT / CVCT in the PSIP, and the service / event level descriptor of the SDT / EIT in the SI. Can be included. Detailed description of the above-described PMT, PSIP, TVCT / CVCT and SDT will be described later.
- the IP network program metadata included in the IP network program descriptor according to an embodiment of the present invention may include information about high-definition UHD broadcasting content transmitted through not only an IP network but also a network such as a terrestrial broadcasting network and a cable network. .
- layer_path layer path information
- the corresponding layer is serviced on the same channel as the current broadcast network. May indicate service.
- the PID of the TS may be included.
- network_type information such as a cable or satellite, an operator ID, an network ID number, a service_number, a channel channel number or a minor channel number, and a transport_stream_id And / or source_id information.
- IP address and / or UDP port number information may be included.
- FIG. 19 illustrates a high dynamic range (HDR) region according to an embodiment of the present invention.
- HDR can be divided into conventional capability, mid luminance capability and high luminance capability as shown in the figure. Accordingly, combination brightness region information (combination_HDR) included in broadcast network program metadata, IP network layer combination brightness region information (combination_HDR) included in IP network program metadata, or UHD program brightness range information according to an embodiment of the present invention.
- UHD_HDR may represent HDR of any one of the above-described conventional capability, mid luminance capability, and high luminance capability.
- an arbitrary minimum value and a maximum value may be specified to signal combination brightness region information, IP network layer combination brightness region information, and / or UHD program brightness range information. Can be.
- FIG. 20 is a diagram illustrating syntax of internet connection information (ip_linkage_info) according to an embodiment of the present invention.
- Internet connection information (ip_linkage_info) according to an embodiment of the present invention is descriptor_tag information, descriptor_length information, IP address type information (IP_address_type), IP address information (IPv4_address), port number information (port_number), URI length information (EL_URI_length) and Contains URI information (EL_URI-byte).
- the descriptor_tag information identifies that the descriptor is a descriptor including Internet connection information.
- the descriptor_length information indicates the length of the descriptor.
- IP address type information indicates a type of an IP address capable of receiving data of each layer transmitted through an IP network. Detailed description of the IP address type information will be described later.
- IP address information indicates an IP address of a type according to IP address type information (IP_address_type).
- IP address information represents a network address value for routing and may signal an IP address by allocating bits according to types.
- the IP address information may indicate an address according to an IPv4 type or an address based on an IPv6 type.
- the port number information indicates a UDP port number capable of receiving data of each layer transmitted through an IP network.
- the URI length information EL_URI_length may indicate the length of the URI for the file to be streamed when the streaming service is provided.
- the URI information may indicate a URI for a file to be streamed when a streaming service is provided.
- IP_address_type IP address type information
- the IP address type information according to an embodiment of the present invention can distinguish whether an IP address is IPv4 composed of 32 bits or IPv6 composed of 128 bits.
- IP address type information 00, it may represent IPv4, and if it is 01, it may represent IPv6.
- FIG. 22 is a diagram illustrating syntax of a program map table (PMT) according to an embodiment of the present invention.
- the broadcast network program descriptor and / or the IP network program metadata according to an embodiment of the present invention may be included in a program level descriptor of a PMT according to an embodiment of the present invention.
- PMT is a table_id field, section_syntax_indicator field, section_length field, program_number field, version_number field, current_next_indicator field, section_number field, last_section_number field, PCR_PID field, program_info_length field, descriptor (), stream_type field, elementary_PID field, It includes an ES_info_length field, a descriptor () and / or a CRC_32 field.
- the table_id field identifies the type of table.
- the table_id field may serve to indicate that this table section is a section constituting the PMT.
- the section_syntax_indicator field represents the format of a table section following this field. If the value of this field is 0, this table section is in short format. If the value of this field is 1, the table section follows the general long format.
- the section_length field represents the length of this table section. Since the section_length field represents the length from the field to the end of the table section, the actual length of the table section may be 3 bytes plus the value indicated by the sercion_length field.
- the program_number field identifies each program service or virtual channel existing in the transport stream.
- the version_number field represents a version number of a private table section.
- the receiver may find the most recent table section stored in the memory using this field and the current_next_indicator field to be described later.
- the current_next_indicator field If the value indicated by the current_next_indicator field is 1, this indicates that the currently transmitted table is valid. If 0, the currently transmitted table is not valid now but will be valid later.
- the section_number field indicates which section of the table this section is.
- the last_section_number field indicates the sequence number of the last section among the sections configuring the table.
- the PCR_PID field represents a packet ID in which a program clock reference (PCR) for a program service exists.
- the program_info_length field represents the length of a descriptor indicating a program information (program_info) that follows.
- descriptor () means a descriptor indicating information on a program corresponding to the corresponding table section.
- the broadcast network program descriptor and / or the IP network program descriptor according to an embodiment of the present invention may correspond to the above descriptor ().
- the stream_type field represents the type of each unit stream constituting the program described in this table.
- the elementary_PID field indicates a packet ID of each unit stream constituting the program described in this table.
- the ES_info_length field indicates the length of a descriptor indicating information (ES_info) for each unit stream that follows.
- the descriptor () means a descriptor indicating information about one unit stream among the unit streams constituting the program described in this table.
- the CRC_32 field represents a CRC value used to check whether there is an error in data included in the table section.
- FIG. 23 is a diagram illustrating syntax of a service description table (SDT) according to an embodiment of the present invention.
- SDT service description table
- the broadcast network program descriptor and / or IP network program metadata according to an embodiment of the present invention may be included in a service level descriptor of the SDT according to an embodiment of the present invention.
- SDT is a table_id field, section_syntax_indicator field, section_length field, transport_stream_id field, version_number field, current_next_indicator field, section_number field, last_section_number field, original_network_id field, service_id field, EIT_schedule_flag field, EIT_present_ running_stating_stating_ Field, descriptors_loop_length field, descriptor () and / or CRC_32 field.
- the table_id field identifies the type of table.
- the table_id field may serve to indicate that this table section is a section constituting the SDT.
- the section_syntax_indicator field represents the format of a table section following this field. If the value of this field is 0, this table section is in short format. If the value of this field is 1, the table section follows the general long format.
- the section_length field represents the length of this table section.
- the section_length field may indicate the length from this field to the end of the table section.
- the transport_stream_id field identifies a transport stream (TS) to be described in this table.
- the version_number field represents a version number of a private table section.
- the receiver may find the most recent table section stored in the memory using this field and the current_next_indicator field to be described later.
- the current_next_indicator field If the value indicated by the current_next_indicator field is 1, this indicates that the currently transmitted table is valid. If 0, the currently transmitted table is not valid now but will be valid later.
- the section_number field indicates which section of the table this section is.
- the last_section_number field indicates the sequence number of the last section among the sections configuring the table.
- the original_network_id field may identify the first broadcast station that transmitted the service described in this table.
- the service_id field identifies each service existing in the transport stream.
- the service_id field may have the same function as the program_number field in the PMT.
- EIT schedule flag EIT schedule flag
- EIT_present_following_flag field If the value indicated by the EIT_present_following_flag field is 1, it indicates that EIT_present_following information for a service exists in the current TS, and 0 indicates that it does not exist.
- the running_status field represents the status of a service. For example, if the value of the running_status field is 1, the service is "not running”, 2 is "starts in a few seconds", 3 is "pausing", 4 is "running”, 5 is It may indicate "service off-air”.
- a value represented by the free_CA_mode field is 0, indicating that component streams constituting the service are not scrambled, and a value of 1 indicates that access to one or more streams is controlled by the CA system.
- the CA system is an abbreviation of Conditional Access System, and means a system that provides a function of encrypting broadcast content and a function of decrypting a broadcast by only a contractor to watch broadcast content in order to limit viewing of the broadcast to a contractor.
- the descriptors_loop_length field represents a value obtained by adding lengths of descriptors following this field.
- descriptor () means a descriptor describing each service.
- the broadcast network program descriptor and / or the IP network program descriptor according to an embodiment of the present invention may correspond to the above descriptor ().
- the CRC_32 field represents a CRC value used to check whether there is an error in data included in the table section.
- EIT event information table
- the broadcast network program descriptor and / or the IP network program metadata according to an embodiment of the present invention may be included in an event level descriptor of an EIT according to an embodiment of the present invention.
- EIT is a table_id field, section_syntax_indicator field, section_length field, service_id field, version_number field, current_next_indicator field, section_number field, last_section_number field, transport_stream_id field, original_network_id field, segment_last_section_number field, last_table_id field, event_id field Field, duration field, running_status field, free_CA_mode field, descriptors_loop_length field, descriptor () and / or CRC_32 field.
- the table_id field identifies the type of table.
- the table_id field may serve to indicate that this table section is a section constituting the EIT.
- the section_syntax_indicator field represents the format of a table section following this field. If the value of this field is 0, this table section is in short format. If the value of this field is 1, the table section follows the general long format.
- the section_length field represents the length of this table section.
- the section_length field may indicate the length from this field to the end of the table section.
- the service_id field identifies each service existing in the transport stream.
- the service_id field may have the same function as the program_number field in the PMT.
- the version_number field represents a version number of a private table section.
- the receiver may find the most recent table section stored in the memory using this field and the current_next_indicator field to be described later.
- the current_next_indicator field If the value indicated by the current_next_indicator field is 1, this indicates that the currently transmitted table is valid. If 0, the currently transmitted table is not valid now but will be valid later.
- the section_number field indicates which section of the table this section is.
- the last_section_number field indicates the sequence number of the last section among the sections configuring the table.
- the transport_stream_id field identifies a transport stream (TS) to be described in this table.
- the original_network_id field may identify the first broadcast station that transmitted the service or event described in this table.
- the segment_last_section_number field indicates the last section number of the segment when the sub table exists. If the sub table is not segmented, the value indicated by this field may represent the same value as the value indicated by the last_section_number field.
- last_table_id field Indicates the last table_id used.
- the event_id field identifies each event and has a unique value within one service.
- the start_time field represents the start time of the corresponding event.
- the duration field indicates the duration of the event. For example, if the program lasts for 1 hour 45 minutes 30 seconds, the duration field may indicate a value of 0x014530.
- the running_status field represents the state of a corresponding event.
- a value represented by the free_CA_mode field is 0, indicating that component streams constituting the service are not scrambled, and a value of 1 indicates that access to one or more streams is controlled by the CA system.
- the CA system is an abbreviation of Conditional Access System, and means a system that provides a function of encrypting broadcast content and a function of decrypting a broadcast by only a contractor to watch broadcast content in order to limit viewing of the broadcast to a contractor.
- the descriptors_loop_length field represents a value obtained by adding lengths of descriptors following this field.
- descriptor () means a descriptor describing each event.
- the broadcast network program descriptor and / or the IP network program descriptor according to an embodiment of the present invention may correspond to the above descriptor ().
- the CRC_32 field represents a CRC value used to check whether there is an error in data included in the table section.
- FIG. 25 is a diagram illustrating syntax of a terrestrial virtual channel table (TVCT) according to an embodiment of the present invention.
- TVCT terrestrial virtual channel table
- the broadcast network program descriptor and / or the IP network program metadata according to an embodiment of the present invention may be included in a channel level descriptor of a TVCT according to an embodiment of the present invention.
- a terrestrial virtual channel table includes a table_id field, a section_syntax_indicator field, a private_indicator field, a section_length field, a transport_stream_id field, a version_number field, a current_next_indicator field, a section_number field, a last_section_number field, a protocop_version field, a num_channels_in_section Field, major_channel_number field, minor_channel_number field, modulation mode field, carrier_frequency field, channel_TSID field, program_number field, ETM_location field, access_controlled field, hidden field, hide_guide field, service_type field, source_id field, descriptors_length field and / or descriptor () Can be.
- a table_id field includes a table_id field, a section_syntax_indicator field, a private_indicator field, a section_length field, a transport_stream
- the table_id field identifies a table.
- the section_syntax_indicator field is a 1-bit field set to 1 to indicate the long form of the MPEG-2 private_section table. (This 1-bit field shall be set to '1' to always indicate the "long" form of the MPEG-2 private_section table.)
- the private_indicator field is a 1-bit field set to 1. (This 1-bit field shall be set to '1'.)
- the section_length field indicates the length of the table section following this field in number of bytes. (This is a 12-bit field, the first two bits of which shall be "00" .It specifies the number of bytes of the section, starting immediately following the section_length field and including the CRC.The section_length shall not exceed 1 021 so that the entire section has a maximum length of 1 024 bytes.)
- the transport_stream_id field represents an identifier of an MPEG-2 transport stream (TS) in a table.
- TS transport stream
- MPEG-2 established the use of a 16-bit (ranging from 0 to 65535) transport_stream_identifier, which is also called a TSID.)
- the version_number field is a 5-bit field indicating the version number of the table. (This 5-bit field is the version number of the PSIP_section.The version_number shall be incremented by 1 modulo 32 when a change in the information carried within the PSIP_section occurs.When the current_next_indicator is set to '0', then the version_number shall be that of the next applicable PSIP_section with the same table_id, table_id_extension, and section_number.)
- the current_next_indicator field is a 1-bit field and indicates whether this table is currently applicable or next applicable.
- a 1-bit field which when set to '1' indicates that the PSIP_section sent is currently applicable.
- the version_number shall be that of the currently applicable PSIP_section.
- the bit is set to '0', it indicates that the PSIP_section sent is not yet applicable and shall be the next PSIP_section with the same section_number, table_id_extension, and table_id to become valid.
- the section_number field represents the number of a section. (This 8-bit field gives the number of the PSIP_section.The section_number of the first section in a PSIP table shall be 0x00. The section_number shall be incremented by 1 with each additional section in PSIP table. The scope of the section_number shall be defined by the table_id and table_id_extension.That is, for each PSIP table and value of the table_id_extension field, there is the potential for the full range of section_number values.)
- the last_section_number field identifies the number of the last section. (This 8-bit field specifies the number of the last section (that is, the section with the highest section_number) of the PSIP table of which this section is a part.Its scope is the same as for the section_number field.)
- the protocop_version field is a field having a function for later allowing a current table type for transmitting a parameter different from a parameter defined in the current protocol. (An 8-bit unsigned integer field whose function is to allow, in the future, this table type to carry parameters that may be structured differently than those defined in the current protocol.At present, the only valid value for protocol_version is zero.Non -zero values of protocol_version may be used by a future version of this standard to indicate structurally different tables.)
- the num_channels_in_section field represents the number of virtual channel resolutions. (The num_channels_in_section field in ATSC Cable Virtual Channel table CVCT table sections is an eight-bit field that indicates the number of virtual channel definitions to follow in the table section.)
- the short_name field is a 112-bit field indicating a short name for a virtual channel.
- the short_name field is a 112-bit field in ATSC CVCT table sections that gives the short_name for the virtual channel.Each letter of the short_name is formatted as a 16-bit Unicode character, with the high order byte transmitted first.So, short_name for TVCT and CVCT entries is seven Unicode characters, which short_name for SVCT entries is eight Unicode characters. If the display name is less than the number of permitted characters, 0 / 0x00 is appended to the end until the alloted number of bits has been reached .)
- the major_channel_number field represents the number of major channels associated with a virtual channel. (A 10-bit number that represents the "major” channel number associated with the virtual channel being defined in this iteration of the "for" loop.Each virtual channel shall be associated with a major and a minor channel number. The major channel number , along with the minor channel number, act as the user's reference number for the virtual channel. The major_channel_number shall be between 1 and 99. The value of major_channel_number shall be set such that in no case is a major_channel_number / minor_channel_number pair duplicated within the TVCT .)
- the minor_channel_number field represents the number of minor channels associated with a virtual channel. (A 10-bit number in the range 0 to 999 that represents the "minor” or "sub"-channel number.This field, together with major_channel_number, performs as a two-part channel number, where minor_channel_number represents the second or right- hand part of the number.When the service_type is analog television, minor_channel_number shall be set to 0.)
- the modulation mode field indicates the modulation scheme for the transport carrier of the virtual channel.
- the modulation_mode is an eight-bit field in a virtual channel entry tells receivers the modulation used to transmit individual channels.
- the carrier_frequency field carries carrier frequency information used by the transmission virtual channel.
- the carrier frequency is a 32-bit field that transmits the carrier frequency used by the transport carrying the virtual channel.
- the channel_TSID field represents an MPEG-2 Transport Stream ID for a Transport Stream (TS) for transmitting an MPEG-2 program associated with a virtual channel.
- TS Transport Stream
- the channel_TSID is a 16-bit unsigned integer field that gives the transport_stream_id of the channel that carries (or for inactive channels, will carry) the virtual channel.
- the program_number field identifies each program service or virtual channel in the TS. (The program_number is a 16-bit unsigned integer that uniquely identifies each program service (or virtual channel) present in a transport stream.)
- the ETM_location field indicates whether an extended text message exists for a channel, an event, or a data event.
- the ETM_location field denotes whether there is an extended text message for the channel (Channel Extended Text table or CETT), event (Event Extended Text table) or data event (Data Extended Text table).
- the access_controlled field represents whether an event associated with a corresponding virtual channel can be controlled. (When access_controlled is set to '1', means that events associated with this virtual channel may be access controlled.When set to '0', access to event is not controlled.)
- the hidden field indicates whether the channel can be accessed by direct entry (or field, property or object) of the virtual channel number. (When hidden is set to '1', means the channel cannot be accessed by direct entry of the virtual channel number.When set to '0', virtual can be accessed by direct entry.)
- the hide_guide field means whether a corresponding channel can be accessed by a direct entry (or a field, an attribute, or an object) of a virtual channel number. (When hide_guide is set to '1', means the channel cannot be accessed by direct entry of the virtual channel number.When set to '0', virtual can be accessed by direct entry.)
- the service_type field identifies a service type set in the virtual channel.
- the service_type is a 6-bit enumerated field that identifies the type of service set in the virtual channel.
- the service type may be a parameterized service (0x07), an extended parameterized service (0x09) or a new DTV.
- the above-described service name and value are exemplary and may be set to other names or values.
- the source_id field is a 16-bit unsigned integer and indicates a programming source associated with a virtual channel. (A 16-bit unsigned integer number that identifies the programming source associated with the virtual channel.In this context, a source is one specific source of video, text, data, or audio programming.Source ID value zero is reserved.Source ID values in the range 0x0001 to 0x0FFF shall be unique within the Transport Stream that carries the VCT, while values 0x1000 to 0xFFFF shall be unique at the regional level.Values for source_ids 0x1000 and above shall be issued and administered by a Registration Authority designated by the ATSC .)
- the descriptors_length field carries the length of the byte of the following descriptor field. (The descriptors_length is a 10-bit unsigned integer field that signals the length in bytes of the descriptor field to follow.If there are no descriptors present, zero would be appropriate.)
- the descriptor () field is a descriptor loop located in the table.
- the descriptor loop may include additional descriptors.
- the broadcast network program descriptor and / or the IP network program descriptor according to an embodiment of the present invention may correspond to the above descriptor ().
- FIG. 26 is a diagram illustrating syntax of a cable virtual channel table (CVCT) according to an embodiment of the present invention.
- CVCT cable virtual channel table
- the broadcast network program descriptor and / or the IP network program metadata according to an embodiment of the present invention may be included in a channel level descriptor of CVCT according to an embodiment of the present invention.
- a terrestrial virtual channel table includes a table_id field, a section_syntax_indicator field, a private_indicator field, a section_length field, a transport_stream_id field, a version_number field, a current_next_indicator field, a section_number field, a last_section_number field, a protocop_version field, a num_channels_in_section Field, major_channel_number field, minor_channel_number field, modulation mode field, carrier_frequency field, channel_TSID field, program_number field, ETM_location field, access_controlled field, hidden field, path_select field, out_of_band field, hide_guide field, service_type field, source_id field, descriptors_length field and / or It may include a descriptor ().
- the table_id field identifies a table.
- the section_syntax_indicator field is a 1-bit field set to 1 to indicate the long form of the MPEG-2 private_section table. (This 1-bit field shall be set to '1' to always indicate the "long" form of the MPEG-2 private_section table.)
- the private_indicator field is a 1-bit field set to 1. (This 1-bit field shall be set to '1'.)
- the section_length field indicates the length of the table section following this field in number of bytes. (This is a 12-bit field, the first two bits of which shall be "00" .It specifies the number of bytes of the section, starting immediately following the section_length field and including the CRC.The section_length shall not exceed 1 021 so that the entire section has a maximum length of 1 024 bytes.)
- the transport_stream_id field represents an identifier of an MPEG-2 transport stream (TS) in a table.
- TS transport stream
- MPEG-2 established the use of a 16-bit (ranging from 0 to 65535) transport_stream_identifier, which is also called a TSID.)
- the version_number field is a 5-bit field indicating the version number of the table. (This 5-bit field is the version number of the PSIP_section.The version_number shall be incremented by 1 modulo 32 when a change in the information carried within the PSIP_section occurs.When the current_next_indicator is set to '0', then the version_number shall be that of the next applicable PSIP_section with the same table_id, table_id_extension, and section_number.)
- the current_next_indicator field is a 1-bit field and indicates whether this table is currently applicable or next applicable.
- a 1-bit field which when set to '1' indicates that the PSIP_section sent is currently applicable.
- the version_number shall be that of the currently applicable PSIP_section.
- the bit is set to '0', it indicates that the PSIP_section sent is not yet applicable and shall be the next PSIP_section with the same section_number, table_id_extension, and table_id to become valid.
- the section_number field represents the number of a section. (This 8-bit field gives the number of the PSIP_section.The section_number of the first section in a PSIP table shall be 0x00. The section_number shall be incremented by 1 with each additional section in PSIP table. The scope of the section_number shall be defined by the table_id and table_id_extension.That is, for each PSIP table and value of the table_id_extension field, there is the potential for the full range of section_number values.)
- the last_section_number field identifies the number of the last section. (This 8-bit field specifies the number of the last section (that is, the section with the highest section_number) of the PSIP table of which this section is a part.Its scope is the same as for the section_number field.)
- the protocop_version field is a field having a function for later allowing a current table type for transmitting a parameter different from a parameter defined in the current protocol. (An 8-bit unsigned integer field whose function is to allow, in the future, this table type to carry parameters that may be structured differently than those defined in the current protocol.At present, the only valid value for protocol_version is zero.Non -zero values of protocol_version may be used by a future version of this standard to indicate structurally different tables.)
- the num_channels_in_section field represents the number of virtual channel resolutions. (The num_channels_in_section field in ATSC Cable Virtual Channel table CVCT table sections is an eight-bit field that indicates the number of virtual channel definitions to follow in the table section.)
- the short_name field is a 112-bit field indicating a short name for a virtual channel.
- the short_name field is a 112-bit field in ATSC CVCT table sections that gives the short_name for the virtual channel.Each letter of the short_name is formatted as a 16-bit Unicode character, with the high order byte transmitted first.So, short_name for TVCT and CVCT entries is seven Unicode characters, which short_name for SVCT entries is eight Unicode characters. If the display name is less than the number of permitted characters, 0 / 0x00 is appended to the end until the alloted number of bits has been reached .)
- the major_channel_number field represents the number of major channels associated with a virtual channel. (A 10-bit number that represents the "major” channel number associated with the virtual channel being defined in this iteration of the "for" loop.Each virtual channel shall be associated with a major and a minor channel number. The major channel number , along with the minor channel number, act as the user's reference number for the virtual channel. The major_channel_number shall be between 1 and 99. The value of major_channel_number shall be set such that in no case is a major_channel_number / minor_channel_number pair duplicated within the TVCT .)
- the minor_channel_number field represents the number of minor channels associated with a virtual channel. (A 10-bit number in the range 0 to 999 that represents the "minor” or "sub"-channel number.This field, together with major_channel_number, performs as a two-part channel number, where minor_channel_number represents the second or right- hand part of the number.When the service_type is analog television, minor_channel_number shall be set to 0.)
- the modulation mode field indicates the modulation scheme for the transport carrier of the virtual channel.
- the modulation_mode is an eight-bit field in a virtual channel entry tells receivers the modulation used to transmit individual channels.
- the carrier_frequency field carries carrier frequency information used by the transmission virtual channel.
- the carrier frequency is a 32-bit field that transmits the carrier frequency used by the transport carrying the virtual channel.
- the channel_TSID field represents an MPEG-2 Transport Stream ID for a Transport Stream (TS) for transmitting an MPEG-2 program associated with a virtual channel.
- TS Transport Stream
- the channel_TSID is a 16-bit unsigned integer field that gives the transport_stream_id of the channel that carries (or for inactive channels, will carry) the virtual channel.
- the program_number field identifies each program service or virtual channel in the TS. (The program_number is a 16-bit unsigned integer that uniquely identifies each program service (or virtual channel) present in a transport stream.)
- the ETM_location field indicates whether an extended text message exists for a channel, an event, or a data event.
- the ETM_location field denotes whether there is an extended text message for the channel (Channel Extended Text table or CETT), event (Event Extended Text table) or data event (Data Extended Text table).
- the access_controlled field represents whether an event associated with a corresponding virtual channel can be controlled. (When access_controlled is set to '1', means that events associated with this virtual channel may be access controlled.When set to '0', access to event is not controlled.)
- the hidden field indicates whether the channel can be accessed by direct entry (or field, property or object) of the virtual channel number. (When hidden is set to '1', means the channel cannot be accessed by direct entry of the virtual channel number.When set to '0', virtual can be accessed by direct entry.)
- the path_select field is a field in the CVCT that associates the virtual channel with the transmission path of the active channel.
- the path_select is a 1-bit field in a Cable Virtual Channel table (CVCT) entry that associates a virtual channel with a transmission path of an active channel or when the channel will be active.
- CVCT Cable Virtual Channel table
- the out_of_band field indicates whether a virtual channel is transmitted on an out-of-band physical transport channel.
- the out_of_band is a 1-bit Boolean field in a Cable Virtual Channel table entry that when set to '1' is carried on the out-of-band physical transmission channel.When clear or '0', the virtual channel is carried within a tuned multiplex.When the channel is inactive, out_of_band reflects the channel that will be valid when the channel is again active.
- the hide_guide field means whether a corresponding channel can be accessed by a direct entry (or a field, an attribute, or an object) of a virtual channel number. (When hide_guide is set to '1', means the channel cannot be accessed by direct entry of the virtual channel number.When set to '0', virtual can be accessed by direct entry.)
- the service_type field identifies a service type set in the virtual channel.
- the service_type is a 6-bit enumerated field that identifies the type of service set in the virtual channel.
- the service type may be a parameterized service (0x07), an extended parameterized service (0x09) or a new DTV.
- the above-described service name and value are exemplary and may be set to other names or values.
- the source_id field is a 16-bit unsigned integer and indicates a programming source associated with a virtual channel. (A 16-bit unsigned integer number that identifies the programming source associated with the virtual channel.In this context, a source is one specific source of video, text, data, or audio programming.Source ID value zero is reserved.Source ID values in the range 0x0001 to 0x0FFF shall be unique within the Transport Stream that carries the VCT, while values 0x1000 to 0xFFFF shall be unique at the regional level.Values for source_ids 0x1000 and above shall be issued and administered by a Registration Authority designated by the ATSC .)
- the descriptors_length field carries the length of the byte of the following descriptor field. (The descriptors_length is a 10-bit unsigned integer field that signals the length in bytes of the descriptor field to follow.If there are no descriptors present, zero would be appropriate.)
- the descriptor () field is a descriptor loop located in the table.
- the descriptor loop may include additional descriptors.
- the broadcast network program descriptor and / or the IP network program descriptor according to an embodiment of the present invention may correspond to the above descriptor ().
- a broadcast network program descriptor and / or an IP network program descriptor may be included at a channel level.
- FIG. 27 is a diagram illustrating a method for transmitting high quality UHD broadcast content according to an embodiment of the present invention.
- the high definition UHD broadcasting content may be transmitted through the following process.
- the transmitting side transmits data through one or more enhancement layers including data of the base layer constituting the basic UHD broadcast program, additional information necessary for providing a high quality UHD broadcast program based on the data of the base layer, and a broadcast network.
- IP network program metadata including information about a high definition UHD broadcast program and information about a high definition UHD broadcast program transmitted through an IP network is encoded (S27010).
- the sender packetizes the data of the encoded base layer and / or the data of the first enhancement layer of the one or more enhancement layers into broadcast packets, and the data of the second enhancement layer of the encoded one or more enhancement layers is IP packets.
- the transmitting side transmits the packetized broadcast packet through the broadcast network and the IP packet through the IP network (S27030).
- the detailed description of the transmission process is replaced by the description of FIGS. 1 to 3 and 5 of the present specification.
- the detailed description of the broadcasting network program metadata and the IP network program metadata is replaced with the description of FIGS. 9, 15, 17, and 20 of the present specification.
- broadcast network program metadata may include program type information indicating a type of UHD broadcast program that may be finally provided by data of a layer transmitted through the broadcast network, and the number of layers transmitted through the broadcast network.
- Hierarchical number information indicating a number, hierarchical combination number information indicating a number of layer combinations transmitted through a broadcasting network, and / or hierarchical combination type information indicating combination information of layers transmitted through a broadcasting network.
- broadcast network program metadata includes layer identification information for identifying each layer transmitted through a broadcast network, layer encoding type information indicating a type of codec used in each layer transmitted through the broadcast network, and a broadcast network.
- Extension indicating a layer-specific stream packet identification information indicating packet identification information of a unit stream including data of each layer transmitted through a packet and / or a scalable item that can be simultaneously provided by each layer transmitted through a broadcasting network.
- Possible type information may be included.
- Detailed description of the information included in the above-described broadcasting network program metadata is replaced with the description of FIGS. 9 and 15 of the present specification.
- the IP network program metadata includes scalable flag information indicating whether data of a layer transmitted through the IP network is encoded with a scalable codec, and a layer transmitted through the IP network.
- IP network layer number information indicating the number of pieces of information
- IP network layer combination number information indicating the number of layer combinations transmitted through the IP network
- IP network layer combination type information indicating the combination information of layers transmitted through the IP network. It may include.
- Detailed description of the information included in the above-described IP network program metadata is replaced with the description of FIGS. 17 and 20 of the present specification.
- the IP network program metadata may include IP network layer identification information for identifying each layer transmitted through the IP network, and a packet of a unit stream including data of each layer transmitted through the IP network.
- IP network stream packet identification information representing identification information and / or Internet connection information representing information on a transmission path of data of each layer transmitted through the IP network.
- the Internet connection information includes IP address type information indicating a type of IP address capable of receiving data of each layer transmitted through an IP network, and an IP address type according to the IP address type information.
- IP address information indicating an IP address having a and / or port number information indicating a UDP port number capable of receiving data of each layer transmitted through an IP network.
- broadcast network program metadata and IP network program metadata may be included in PMT, SDT, EIT, TVCT, or CVCT in the form of a descriptor and transmitted.
- PMT, SDT, EIT, TVCT and CVCT Detailed description of the above-described PMT, SDT, EIT, TVCT and CVCT is replaced by the description of FIGS. 22 to 26 of the present specification.
- 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 be used throughout the broadcasting industry.
Abstract
Description
Claims (14)
- 기본화질 UHD 방송 프로그램을 구성하는 기본 계층의 데이터를 인코딩하는 단계;상기 기본 계층의 데이터를 기초로 하여 고화질 UHD 방송 프로그램을 제공하기 위해 필요한 부가 정보를 포함하는 하나 이상의 향상 계층의 데이터를 인코딩하는 단계;방송망을 통하여 전송되는 고화질 UHD 방송 프로그램에 대한 정보를 포함하는 방송망 프로그램 메타데이터 및 IP 망을 통하여 전송되는 고화질 UHD 방송 프로그램에 대한 정보를 포함하는 IP 망 프로그램 메타데이터를 인코딩하는 단계;상기 인코딩된 기본 계층의 데이터 및/또는 상기 하나 이상의 향상 계층 중 제 1 향상 계층의 데이터를 방송 패킷으로 패킷화하는 단계;상기 인코딩된 상기 하나 이상의 향상 계층 중 제 2 향상 계층의 데이터를 IP 패킷으로 패킷화하는 단계;상기 방송 패킷을 방송망을 통하여 전송하는 단계; 및상기 IP 패킷을 IP 망을 통하여 전송하는 단계;를 포함하는 고화질 UHD 방송 컨텐츠 송신 방법.
- 제 1 항에 있어서,상기 방송망 프로그램 메타데이터는 방송망을 통해 전송되는 계층의 데이터에 의해 최종적으로 제공될 수 있는 UHD 방송 프로그램의 종류를 나타내는 프로그램 타입 정보, 방송망을 통해 전송되는 계층의 개수를 나타내는 계층 개수 정보, 방송망을 통해 전송되는 계층 조합의 개수를 나타내는 계층 조합 개수 정보 및 방송망을 통해 전송되는 계층들의 조합 정보를 나타내는 계층 조합 타입 정보 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 고화질 UHD 방송 컨텐츠 송신 방법.
- 제 1 항에 있어서,상기 방송망 프로그램 메타데이터는 방송망을 통해 전송되는 각 계층을 식별하는 계층 식별 정보, 방송망을 통해 전송되는 각 계층에서 사용하는 코덱의 종류를 나타내는 계층 인코딩 타입 정보, 방송망을 통해 전송되는 각 계층의 데이터가 포함된 단위 스트림의 패킷 식별 정보를 나타내는 계층 단위 스트림 패킷 식별 정보 및 방송망을 통해 전송되는 각 계층에서 동시에 제공할 수 있는 확장 가능한 (scalable)항목을 나타내는 확장 가능 타입 정보 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 고화질 UHD 방송 컨텐츠 송신 방법.
- 제 1 항에 있어서,상기 IP 망 프로그램 메타데이터는 IP 망을 통해 전송되는 계층의 데이터가 확장 가능한 (scalable)코덱으로 인코딩 되었는지 여부를 나타내는 확장 가능 플래그 정보, IP 망을 통해 전송되는 계층들의 개수를 나타내는 IP 망 계층 개수 정보, IP 망을 통해 전송되는 계층 조합의 개수를 나타내는 IP 망 계층 조합 개수 정보 및 IP 망을 통해 전송되는 계층들의 조합 정보를 나타내는 IP 망 계층 조합 타입 정보 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 고화질 UHD 방송 컨텐츠 송신 방법.
- 제 1 항에 있어서,상기 IP 망 프로그램 메타데이터는 IP 망을 통해 전송되는 각 계층을 식별하는 IP 망 계층 식별 정보, IP 망을 통해 전송되는 각 계층의 데이터가 포함된 단위 스트림의 패킷 식별 정보를 나타내는 IP 망 단위 스트림 패킷 식별 정보 및 IP 망을 통해 전송되는 각 계층의 데이터의 전송 경로에 대한 정보를 나타내는 인터넷 연결 정보 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 고화질 UHD 방송 컨텐츠 송신 방법.
- 제 5 항에 있어서,상기 인터넷 연결 정보는 IP 망을 통해 전송되는 각 계층의 데이터를 수신할 수 있는 IP 주소의 타입을 나타내는 IP 주소 타입 정보, 상기 IP 주소 타입 정보에 따른 IP 주소 타입을 갖는 IP 주소를 나타내는 IP 주소 정보 및 IP 망을 통해 전송되는 각 계층의 데이터를 수신할 수 있는 UDP 포트 넘버를 나타내는 포트 넘버 정보 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 고화질 UHD 방송 컨텐츠 송신 방법.
- 제 2 항 내지 제 4 항 및 제 6 항에 있어서,상기 방송망 프로그램 메타데이터 및 상기 IP 망 프로그램 메타데이터는 디스크립터의 형태로 PMT, SDT, EIT, TVCT 또는 CVCT에 포함되어 전송되는 것을 특징으로 하는 고화질 UHD 방송 컨텐츠 송신 방법.
- 방송망을 통하여, 기본화질 UHD 방송 프로그램을 구성하는 기본 계층의 데이터 및/또는 상기 기본 계층의 데이터를 기초로 하여 고화질 UHD 방송 프로그램을 제공하기 위해 필요한 부가 정보를 포함하는 하나 이상의 향상 계층 중 제 1 향상 계층의 데이터를 수신하는 제 1 수신부로서,상기 제 1 수신부는 방송망을 통하여 전송되는 고화질 UHD 방송 프로그램에 대한 정보를 포함하는 방송망 프로그램 메타데이터 및 IP 망을 통하여 전송되는 고화질 UHD 방송 프로그램에 대한 정보를 포함하는 IP 망 프로그램 메타데이터를 수신하고;IP 망을 통하여, 상기 하나 이상의 향상 계층 중 제 2 향상 계층의 데이터를 수신하는 제 2 수신부;상기 제 1 수신부에 의해 수신된 상기 기본 계층의 데이터 및/또는 제 1 향상 계층의 데이터를 디코딩하는 제 1 디코더;상기 제 2 수신부에 의해 수신된 상기 제 2 향상 계층의 데이터를 디코딩하는 제 2 디코더; 및상기 디코딩된 기본 계층의 데이터 및 하나 이상의 향상 계층의 데이터에 의해 제공되는 고화질 UHD 방송 프로그램을 재생하는 재생부;를 포함하는 고화질 UHD 방송 컨텐츠 수신 장치.
- 제 8 항에 있어서,상기 방송망 프로그램 메타데이터는 방송망을 통해 수신되는 계층의 데이터에 의해 최종적으로 제공될 수 있는 UHD 방송 프로그램의 종류를 나타내는 프로그램 타입 정보, 방송망을 통해 수신되는 계층의 개수를 나타내는 계층 개수 정보, 방송망을 통해 수신되는 계층 조합의 개수를 나타내는 계층 조합 개수 정보 및 방송망을 통해 수신되는 계층들의 조합 정보를 나타내는 계층 조합 타입 정보 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 고화질 UHD 방송 컨텐츠 수신 장치.
- 제 8 항에 있어서,상기 방송망 프로그램 메타데이터는 방송망을 통해 수신되는 각 계층을 식별하는 계층 식별 정보, 방송망을 통해 수신되는 각 계층에서 사용하는 코덱의 종류를 나타내는 계층 인코딩 타입 정보, 방송망을 통해 수신되는 각 계층의 데이터가 포함된 단위 스트림의 패킷 식별 정보를 나타내는 계층 단위 스트림 패킷 식별 정보 및 방송망을 통해 수신되는 각 계층에서 동시에 제공할 수 있는 확장 가능한 (scalable)항목을 나타내는 확장 가능 타입 정보 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 고화질 UHD 방송 컨텐츠 수신 장치.
- 제 8 항에 있어서,상기 IP 망 프로그램 메타데이터는 IP 망을 통해 수신되는 계층의 데이터가 확장 가능한 (scalable)코덱으로 인코딩 되었는지 여부를 나타내는 확장 가능 플래그 정보, IP 망을 통해 수신되는 계층들의 개수를 나타내는 IP 망 계층 개수 정보, IP 망을 통해 수신되는 계층 조합의 개수를 나타내는 IP 망 계층 조합 개수 정보 및 IP 망을 통해 수신되는 계층들의 조합 정보를 나타내는 IP 망 계층 조합 타입 정보 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 고화질 UHD 방송 컨텐츠 수신 장치.
- 제 8 항에 있어서,상기 IP 망 프로그램 메타데이터는 IP 망을 통해 수신되는 각 계층을 식별하는 IP 망 계층 식별 정보, IP 망을 통해 수신되는 각 계층의 데이터가 포함된 단위 스트림의 패킷 식별 정보를 나타내는 IP 망 단위 스트림 패킷 식별 정보 및 IP 망을 통해 수신되는 각 계층의 데이터의 전송 경로에 대한 정보를 나타내는 인터넷 연결 정보 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 고화질 UHD 방송 컨텐츠 수신 장치.
- 제 12 항에 있어서,상기 인터넷 연결 정보는 IP 망을 통해 수신되는 각 계층의 데이터를 획득할 수 있는 IP 주소의 타입을 나타내는 IP 주소 타입 정보, 상기 IP 주소 타입 정보에 따른 IP 주소 타입을 갖는 IP 주소를 나타내는 IP 주소 정보 및 IP 망을 통해 수신되는 각 계층의 데이터를 획득할 수 있는 UDP 포트 넘버를 나타내는 포트 넘버 정보 중 적어도 어느 하나를 포함하는 것을 특징으로 하는 고화질 UHD 방송 컨텐츠 수신 장치.
- 제 9 항 내지 제 11 항 및 제 13 항에 있어서,상기 방송망 프로그램 메타데이터 및 상기 IP 망 프로그램 메타데이터는 디스크립터의 형태로 PMT, SDT, EIT, TVCT 또는 CVCT에 포함되어 수신되는 것을 특징으로 하는 고화질 UHD 방송 컨텐츠 수신 장치.
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US14/908,432 US9973764B2 (en) | 2013-09-09 | 2014-09-05 | Method and device for transmitting and receiving advanced UHD broadcasting content in digital broadcasting system |
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US9973764B2 (en) | 2018-05-15 |
KR20160037904A (ko) | 2016-04-06 |
US20160191929A1 (en) | 2016-06-30 |
JP6261741B2 (ja) | 2018-01-17 |
KR101733504B1 (ko) | 2017-05-10 |
JP2016534621A (ja) | 2016-11-04 |
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