(JBE Vol. 22, No. 6, November 2017) UHD(Ultra High Definition), , UHD 2012, 2015, 5. UHD ATSC(Advanced Television System Commi
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1 10 : HDR/WCG 3D UHD/ HD ATSC UHDTV (Regular Paper) 22 6, (JBE Vol. 22, No. 6, November 2017) ISSN (Online) ISSN (Print) HDR/WCG 3D UHD/ HD ATSC 3.0 UHDTV a), a), a), a), a), a), a), a), a), a), a) Development of ATSC3.0 based UHDTV Broadcasting System providing Ultra-high-quality Service that supports HDR/WCG Video and 3D Audio, and a Fixed UHD/Mobile HD Service Myungseok Ki a), Jinwuk Seok a), Seungkwon Beack a), Daeyoung Jang a), Taejin Lee a), Hui Yong Kim a), Hyeju Oh a), Bo-mi Lim a), Byungjun Bae a), Heung Mook Kim a), and Jin Soo Choi a) TV,,,, UHD/ HD UHD. UHDTV ATSC3.0. ATSC3.0 HEVC, MPEG-H 3D. IP MPEG-2 TS IP ROUTE/DASH MMT, 4K UHD HD. ATSC3.0 HDR/WCG, 10.2 /4, UHD HD /, ROUTE/ DASH, ATSC 3.0 LDM,. Abstract Due to the large-scale TV display, the convergence of broadcasting and broadband, and the advancement of signal compression and transmission technology, terrestrial digital broadcasting has evolved into UHD broadcasting capable of providing simultaneous broadcasting of fixed UHD and mobile HD. The Korean standard for terrestrial UHDTV broadcasting is based on ATSC 3.0, the broadcasting standard of North America. The terrestrial UHDTV broadcasting standard chose that as a new AV codec standard, HEVC video codec which can compress with higher efficiency compared to AVC, and MPEG-H 3D audio codec for realistic audio. Also, DASH and MMT are adopted as transmission format instead of MPEG-2 TS to support broadband as well as broadcasting network, and in order to provide 4K UHD/mobile HD service simultaneously ROUTE multiplexing technology is applied. In this paper, we propose an audio/video encoder, which is required to provide HDR/WCG supported high quality video service, 10.2 channel/4 object supporting stereo sound service, fixed UHD and mobile HD simultaneous broadcasting service based on ATSC3.0, also we implemented the ATSC 3.0 LDM system for ROUTE/DASH packager, multiplexing system and physical layer transmission/reception, and verified the service ability by applying it to real time broadcast environment. Keyword : ATSC3.0, UHDTV, HEVC, MPEG-H 3DA, DASH/ROUTE
2 (JBE Vol. 22, No. 6, November 2017) UHD(Ultra High Definition), , UHD 2012, 2015, 5. UHD ATSC(Advanced Television System Committee) 3.0, HD 4, 2,,. UHD TV 50 TV, TV, UHD AVC(Advanced a) (Broadcasting and Media Research Laboratory, ETRI(Electronics and Telecommunications Research Institute)) Corresponding Author : (Myungseok Ki) serdong@etri.re.kr Tel: ORCID: [ , UHD ][B , UHD / / ]. Manuscript received Ocotober 12, 2017; Revised October 27, 2017; Accepted October 27, Video Coding) 2 HEVC (High Efficiency Video Coding) UHD(3,840x2,160, 10, 60 ), HD (HDR; High Dynamic Range) (WCG; Wide Color Gamut), MPEG-H 3D Audio(3DA) / (10.2, 4 ). / / MPEG-2 TS(Transport Stream) [1] IP DASH/ROUTE MMT UHD [2]. (LDM; Layered Division Multiplexing) UHD HD.,.,. HDR/WCG(High Dynamic Range/Wide Color Gamut), 10.2 /4,, UHD HD /,,,,,,,, UHD. Copyright 2017 Korean Institute of Broadcast and Media Engineers. All rights reserved. This is an Open-Access article distributed under the terms of the Creative Commons BY-NC-ND ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited and not altered.
3 10 : HDR/WCG 3D UHD/ HD ATSC UHDTV. 2 ATSC3.0 UHD, 3 8 HDR/WCG UHD HEVC, / MPEG-H 3DA, ROUTE/DASH(Real Time Object Delivery over Uni- directional Transport/Dynamic Adaptive Streaming over HTTP), ROUTE MUX, ATSC 3.0 UHD, ATSC 3.0 UHD. 9.. ATSC 3.0 UHDTV UHDTV HDR/WCG, 10.2 /4,, UHD HD ATSC 3.0 UHDTV 1. HDR/WCG 4K HEVC (a) ATSC 3.0 UHDTV (a) ATSC 3.0 UHDTV Transmission system 1. ATSC 3.0 UHDTV Fig. 1. ATSC 3.0 UHDTV Broadcasting System Structure (b) ATSC 3.0 UHDTV (b) ATSC 3.0 UHDTV Receiver system
4 (JBE Vol. 22, No. 6, November 2017), MPEG-H 3DA, ROUTE/DASH (Packager), UHD HD ROUTE (MUX), ROUTE ATSC 3.0. IP, AV. ATSC 3.0 (Demodulator), ROUTE HEVC /, ROUTE 3DA /,, HDR/WCG HEVC HDR TV PQ(Perceptual Quantizer) HDR. 3DA I/O UHDTV 1. HEVC HEVC Main10, 20Mbps fps. MPEG-H 3DA 3DA LC, 10.2 /4 1Mbps. AV MPET-2 TS IP DASH/ ROUTE, UHD UHD/HD.,, LDM.. UHD HDR HEVC ATSC 3.0 UHDTV UHD HDR HEVC. UHD HDR HEVC ATSC 3.0,, HEVC. 1. UHD HDR HEVC 1. ATSC 3.0 UHD Table 1. ATSC 3.0 UHD System parameter Category Format Avg bitrate Elementary Stream Video UHD YUV 4:2:0 10 fps HEVC Main 10 profile 13~20 Mbps HD YUV 4:2:0 10 fps HEVC Main 10 profile 1.8 Mbps Audio UHD 10.2 channel (10.2 channel + 4 object ) MPEG-H 3D Audio Low Complexity profile 1 Mbps HD (2 channel ) MPEG-4 AAC 192 kbps Multiplexing UHD ROUTE/DASH Segment duration : 1 sec 22 Mbps HD ROUTE/DASH Segment duration : 1 sec 2.3 Mbps Physical Layer UHD Enhanced layer (injection level = -4dB) 23.6 Mbps 64K LDPC (code rate: 12/15), 64-NUC (@ 21 db) HD Core layer 2.6 Mbps 64K LDPC (code rate: 4/15), QPSK (@-0.4 db)
5 10 : HDR/WCG 3D UHD/ HD ATSC UHDTV UHD HDR HEVC HEVC Main 10 60, HD 4 ~16 UHD(4K) HEVC,. HDR/WCG HEVC HDR/WCG. UHD HDR HEVC. UHD(4K) HEVC Main 10 60, 2 2%, UHD(4K) TS /, HW SW,. 2. UHD HDR HEVC UHD HDR HEVC 2 1 ( ) Master HEVC 2 Worker. Worker 1 CPU CPU 3 VCA(Visual Compute Accelerator) 4., 2 VCA 32 IDR(Instantaneous Decoder Refresh) 2 VCA 6 CPU Slice (4K 3840x384 Slice x240 Slice 1 )., 2. UHD HDR HEVC Fig. 2. Structure Diagram of UHD HDR HEVC Video Encoder
![(JBE Vol. 22, No. 6, November 2017) [3][4][5] UHD(4K) 60fps. 4K60P Main10 HEVC,,,,. UHD HDR HEVC HM(HEVC Test Model),, 3.](/docs-images/91/107164860/images/6-0.jpg "ETRI UHD HDR HEVC x265 ( ) PSNR ( ) SSIM ( ) MOS Fig. 3.")
6 (JBE Vol. 22, No. 6, November 2017) [3][4][5] UHD(4K) 60fps. 4K60P Main10 HEVC,,,,. UHD HDR HEVC HM(HEVC Test Model),, 3. ETRI UHD HDR HEVC x265 ( ) PSNR ( ) SSIM ( ) MOS Fig. 3. The result of video quality assessment between UHD HDR HEVC video encoder developed by ETRI and x265 (Left) Result of PSNR (Center) Result of SSIM (Right) Result of MOS 2. Table 2. Experimental environment of video quality assessment Experimental platform Encoder configuration Subjective video quality assessment environment - Intel Core i7-5930k 32GB RAM - HEVC Main10 profile, level 5.2, main tier - Intra period 32, GOP size 8 - Target bitrate: 20Mbps - Frame unit encoding, include rate control - ITU-R BT.500 Double Stimulus Continuous Quality Scale(DSCQS) - Display: Samsung 84inch UHDTV - Experimental participant: 13 people - Resolution & Frame rate : 3840x2160, 60Hz - Color difference format & Bit depth : YUV420P, 10bit - Number of frames: 600 S01 S02 S03 S04 Experimental image
7 10 : HDR/WCG 3D UHD/ HD ATSC UHDTV., Memory Pool, HEVC (Thread),. 12G-SDI 10bit YUV422 TS UDP. TS,. UHD HDR HEVC HDR/WCG/ HFR HEVC HDR/WCG/ HFR HDR/WCG, HDR/WCG. ATSC 3.0 UHDTV UHD HDR HEVC., x265 3 (PSNR: Peak Signal Noise Ratio, SSIM : Structural similarity, MOS : Mean Opinion Score) 3. ATSC 3.0 UHDTV 24 15Mbps 80 HDR/WCG TV.,,.. MPEG-H 3DA UHDTV MPEG-H 3D Audio UHDTV. 1. MPEG-H 3D Audio UHDTV MPEG-H 3DA. MPEG-H 3DA.. : 24. MPEG-H 3DA, MCT (Multichannel Coding Tool) :.,.,. :. MPEG-H 3DA
8 (JBE Vol. 22, No. 6, November 2017) HOA(High Order Ambisonics),. MPEG-H 3DA MPEG. MPEG-H 3DA / 4. USAC(Unified Speech and Audio Coding): USAC 2012 [6]. AAC(Advanced Audio Coding),. MPEG- H 3DA USAC USAC. MPS(MPEG Surround): MPS kbps, [7]. MPEG-H 3DA 24 MPS [8], MCT. SAOC_3D(Spatial Audio Object Coding for 3DA): SAOC 2010 [9]. MPS,. MPS. MPEG-H 3DA SAOC_ 3D. SAOC_3D ( 2 ) USAC. HOA : HOA / MPEG-H 3DA.,,., HOA USAC. HOA HOA. HOA. HOA. (Flexible Renderer):,, Channel Object Audio Scene MPEG-H 3D Audio Encoder MPS SAOC- 3D HOA Metadata USAC MPEG-H 3D Audio Decoder USAC Metadata MPS SAOC- 3D HOA Channel Object Audio Scene Flexible Renderer Mixer Channel Binaural Renderer Speaker Headphone Immersive/Interactive Service 4. MPEG-H 3D Audio / Fig. 4. Structure Diagram of MPEG-H 3D Audio Encoder/Decoder
9 10 : HDR/WCG 3D UHD/ HD ATSC UHDTV. (Format Converter),., (binaural rendering).. 4 MPEG-H 3DA /., MPEG-H 3DA,.,. 2. UHDTV MPEG-H 3DA UHDTV MPEG-H 3DA. MPEG-H 3DA Main profile, High level profile, low complexity(lc) profile 3, UHD TTA LC. TTA UHDTV MPEG-H 3D - 1,2, 3. 3 TTA 16 12, Lfe(Low frequency element) Lfe. UHDTV MPEG-H 3DA 16, 16 12, (mix-down). 3. MPEG-H 3DA ATSC 3.0 UHDTV MPEG-H 3DA UHDTV., SAOC 8 LC. HOA UHDTV. USAC MPEG-H 3DA MPEG Surround(MPS). MPS 5.1 MPS extension. USAC. MUSHRA. MUSHRA, (Hidden reference) 3.5 khz, 7.0 khz (Anchor). MUSHRA 90
10 (JBE Vol. 22, No. 6, November 2017)., MUSHRA 10 MPEG 10, MUSRHA kbps 64 kbps.,. 5. ETRI MPEG-H 3DA Fig. 5. The subjective result for the evaluation on the core module of developed MPEG-H 3DA MPEG-H 3DA., USAC 95%. 6 MPS extension 24,. MPS extension., 10 95%., MPEG-H 3DA, MPEG-H 3DA. MPEG. MPEG-H 3DA. MPEG-H 3DA Main-profile, LC-profile.. ROUTE/DASH (Packager) 1. ROUTE/DASH 6. ETRI MPEG-H 3DA MPS extension Fig. 6. The subjective result for the evaluation on the MPS extension tool for MPEG-H 3DA 5 MPEG-H 3DA USAC. ETRI-3DA ATSC 3.0 UHDTV UHD HD. MPEG-2 TS. IP ROUTE/DASH ROUTE/DASH (packager)
11 10 : HDR/WCG 3D UHD/ HD ATSC UHDTV 7. DASH Fig. 7. Structure of DASH stream. DASH HTTP ISO/IEC MPD(Media Presentation Description) [10]. MPD, (period), media presentation Time, URL,, (bitrate) ISO (media segment). 7 MPD. DASH MPD URL. ROUTE LAN, 3GPP FLUTE(File Delivery over Unidirectional Transport), IP, UDP LCT FLUTE [11]. ROUTE, Source protocol(sending/receiving), protocol Source protocol repair protocol Repair ROUTE session Transport session. 2. UHDTV ROUTE/DASH ROUTE/DASH ROUTE/ DASH (Packager) 4K HEVC/MPEG-H 3DA AV (Interface), DASH DASH (Generator), DASH UDP ROUTE ROUTE (Packetizer). AV MPEG-2 TS UDP AV DASH. ROUTE/DASH,, MPEG-2 TS ASI IP. ROUTE/ DASH ASI/UDP TS TS AV. TS AV DASH AV DASH. DASH TS HEVC, MPEG-H 3D DASH MPD. DASH.,, DASH HEVC 20 Mbps 59.94, IDR 32. AV DASH DASH
12 (JBE Vol. 22, No. 6, November 2017) duration HEVC. DASH duration MPD. ROUTE DASH IP ROUTE. ROUTE SLS (signaling) UDP. 8 ROUTE/DASH GUI. ROUTE/DASH TS, DASH ES ROUTE. ROUTE/ DASH UI AV TS, DASH ROUTE.. ROUTE MUX 1. ROUTE MUX ROUTE MUX ROUTE. ATSC 3.0 UHDTV IP MPEG-DASH [11]. UHDTV IP ROUTE MUX /. 9 ATSC 3.0 UHD ROUTE MUX. ROUTE/DASH ROUTE ATSC ROUTE MUX Fig. 9. Structure Diagram of ROUTE MUX&Signaling Server 8. ROUTE/DASH UI Fig. 8. ROUTE/DASH Packager UI,.
13 10 : HDR/WCG 3D UHD/ HD ATSC UHDTV LLS(Low Level Signaling) SLS(Service Layer Signaling). LLS IP. LLS SLS. SLS,, (capability). ROUTE MUX, DASH ROUTE UDP,. 10 ROUTE MUX GUI. ROUTE MUX UDP SLS. ROUTE/DASH DASH. 2. ROUTE MUX UHD, HD. ROUTE MUX UHD ROUTE/ DASH DASH HD ROUTE ATSC 3.0 UHD. ROUTE/DASH /, ATSC 3.0 UHD HD. ATSC 3.0,. ATSC 3.0 UHDTV IP. 10. ROUTE MUX Fig. 10. ROUTE MUX Transmission configuration and control
14 (JBE Vol. 22, No. 6, November 2017). ATSC 3.0 UHDTV 1. ATSC 3.0 ATSC 3.0 IP ATSC 3.0. ATSC 3.0 DTV ATSC 1.0,, [14]. UHD HD. ATSC 3.0 BICM (Bit-Interleaved Coded Modulation), [12][13]. BICM LDPC(Low Density Parity Check) /15 13/ QPSK 16QAM 4096 QAM NUC(Non Uniform Constellation).. ATSC 3.0 PLP. ATSC 3.0 TDM(Time Division Multiplexing) FDM(Frequency Division Multiplexing). UHD HD LDM. LDM BICM PLP(Physical Layer Pipe) core layer enhanced layer,. core layer [14][15]. ATSC 3.0 LDM BICM, PLP. PLP. ATSC 3.0 PLP PLP. ATSC 3.0, OFDM (Orthogonal Frequency Division Multiplexing). OFDM 8K 16K, 32K FFT FFT. 2. ATSC 3.0 ATSC 3.0 FPGA, ATSC %. ATSC 3.0 UHDTV 14~21 Mbps UHD, 2 Mbps HD, PLP LDM. 3. HD 64K LDPC 4/15 QPSK core layer, UHD 64K LDPC 12/15 64 QAM NUC enhanced layer 4dB ms.,
15 10 : HDR/WCG 3D UHD/ HD ATSC UHDTV 16K FFT, pilot pattern (SP Dx=6, Dy=2)., 98 OFDM ms, core layer enhanced layer 2.59 Mbps Mbps MHz 50. Core layer HD AWGN (Additive White Gaussian Noise) 0.2 db SNR, enhanced layer UHD 21 db SNR., HD. ATSC 3.0 DTV 30%, HD / UHD. LDM TDM SNR [16][17].. ATSC 3.0 UHDTV 1. ATSC 3.0 UHDTV UHDTV ATSC 3.0 UHDTV ATSC 3.0 UHDTV Table 3. Physical Layer Configurations for ATSC 3.0 UHDTV Experimental System Preamble Payload OFDM Payload BICM Datarate Required SNR (@AWGN) Frame Length Occupied Bandwidth ms MHz FFT Size 16k Guard Interval us Pilot Pattern SP Dx=6 Signaling Protection L1-Basic/Detail mode 1 Number of Preamble Symbols 1 FFT Size 16k Guard Interval Pilot Pattern Pilot Boosting us SP Dx=6, Dy=2 1.6 db Number of Payload Symbols 98 Time Interleaver 1024 Convolutional Time Interleaver Frequency Interleaver ON Outer Code BCH Core layer Inner Code 4/15 LDPC (64800) Constellation QPSK Outer Code BCH Enhanced layer Inner Code 12/15 LDPC (64800) Constellation 64-NUC Injection Level -4 db Core layer 2.59 Mbps Enhanced layer Mbp Core layer -0.2 db Enhanced layer 18.7 db
16 844 방송공학회논문지 제22권 제6호, 2017년 11월 (JBE Vol. 22, No. 6, November 2017) 표 4. ATSC 3.0 UHDTV 실험방송 송신시스템 구성 Table 4. ATSC 3.0 UHDTV Experimental transmission system configuration Sub system System shape Contents Server 4K AV Interface Server HEVC Encoder MPEG-H 3DA Encoder Transmission System ROUTE/DASH Packager ROUTE MUX ATSC 3.0 Modulator 콘텐츠 서버(Contents Server) : 콘텐츠 서버는 방송 서 비스를 위한 비압축 AV 데이터를 저장하는 콘텐츠 서 버로 Intel I7 프로세서 기반의 시스템으로 구성되며 Quad 3G- SDI(Serial Digital Interface) 인터페이스를 통해 비압축 AV 데이터를 동기화 신호에 따라 4K AV 인터페이스 서버로 실시간 전송한다. 4K AV 인터페이스(Interface) 서버 : 4K AV 인터페이스 서버는 Intel I7 프로세서 기반의 시스템으로 구성되며 비 압축 AV 데이터를 실시간 입력 받아 AV 신호를 분류하 여 4K YUV420 데이터를 12G-SDI 인터페이스를 통해 HEVC 부호화기로, 10.2채널 WAV 오디오를 3G-SDI 인 터페이스를 통해 MPEG-H 3DA 부호화기로 전송한다. HEVC 부호화기(Encoder) : HEVC 부호화기는 병렬 부 호화 처리를 위해 VCA 카드를 장착한 1U 서버 2대로 구성되며 4K YUV 420 데이터를 입력 받아 이를 HEVC 슬라이스 병렬 부호화 처리하고 그 결과를 MPEG-2 TS로 생성하여 UDP 프로토콜을 이용하여 ROUTE/DASH 패키저로 출력한다.
17 기명석 외 10인: HDR/WCG 비디오와 3D 오디오를 지원하는 초고품질 방송 서비스와 고정 UHD/이동 HD 방송 서비스를 제공하는 ATSC 3.0 기반 UHDTV 방송 시스템 개발 845 MPEG-H 3DA 부호화기(Encoder) : MPEG-H 3DA는 Intel I7 프로세서 기반의 시스템으로 구성되며 10.2 채 널 WAV 오디오 데이터를 입력 받아 이를 MPEG-H 3DA 부호화 처리하고 그 결과를 MPEG-2 TS로 생성하 여 UDP 프로토콜을 이용하여 ROUTE/DASH 패키저로 출력한다. ROUTE/DASH 패키저(Packager) : ROUTE/DASH 패 키저는 Intel I7 프로세서 기반의 시스템으로 구성되며 부호화 된 AV MPEG-2 TS를 UDP 패킷으로 각각 입력 받아 DASH 세그먼트로 실시간 변환하고, 전송을 위해 ROUTE 패킷타이징 하여 이를 ROUTE MUX로 UDP 프로토콜을 이용하여 출력한다. ROUTE MUX : ROUTE MUX는 Intel I7 프로세서 기 반의 시스템으로 구성되며 UHD ROUTE 패킷을 입력 받아 미리 저장된 HD DASH 콘텐츠와 ROUTE 패킷으 로 다중화 하여 ATSC 3.0 송신기로 UDP 프로토콜을 이용하여 출력한다. ATSC 3.0 송신기(Modulator) : ATSC 3.0 송신기는 ROUTE MUX로부터 다중화 된 UHD/HD ROUTE 패 킷을 입력 받아 ATSC 3.0 물리계층 규격에 맞춰 RF 신 호로 출력한다. ATSC 3.0 송신기는 각 콘텐츠에 대하여 독립적으로 채널 코딩 및 변조 기술을 적용하고, LDM 방식으로 결합한다. 2. ATSC 3.0 UHDTV 실험방송 수신시스템 환경 현재 시장에 DASH/ROUTE 및 HDR/WCG와 MPEG-H 3D 오디오를 지원하는 ATSC 3.0 상용 단말이 존재 하지 않기 때문에, 본 연구에서는 송신시스템과 더불어 수신검 증 시스템을 개발하였다. PHY 망으로 전송되는 방송신호 는 ATSC 3.0 물리계층 수신기(Demodulator)에서 수신되 어 LLS를 추출하고 이를 파싱하여 LLS에 기록된 ROUTE 멀티캐스트 주소에 접속하고 해당 주소로부터 주기적으로 송신되는 SLS 를 획득한다. SLS는 전송 세션 정보 및 콘텐 표 5. ATSC 3.0 UHDTV 실험방송 수신시스템 구성 Table 5. ATSC 3.0 UHDTV Experimental receiver system configuration Sub system ATSC 3.0 Demodulator Video DASH Receiver Receiver system Audio DASH Receiver HD DASH Receiver System shape
18 (JBE Vol. 22, No. 6, November 2017) SLS MPD MPD. SLS S-TSID (Service-based Transport Session Instance Description) ROUTE AV SLS USBD(User Service Bundle Description), MPD, S-TSID DTS(Decoding Time Stamp) AV. 5. ATSC 3.0 (Demodulator) : ATSC 3.0 ATSC 3.0 RF DASH DASH UDP. DASH : DASH ATSC 3.0 ROUTE IP UHD ROUTE RGB HDR HDMI 2.0a. DASH : DASH ATSC 3.0 ROUTE IP UHD ROUTE 10.2 WAV. HD AV DASH : HD AV DASH ATSC 3.0 ROUTE HD ROUTE. 11 DASH. DASH ROUTE,, HDR/WCG UHD HDMI 2.0 HDR. DASH MPEG-H 3DA I/O HDR UHD Fig. 11. Screen capture of HDR UHD Contents rendering. ATSC 3.0 UHDTV, AV. IP.
19 10 : HDR/WCG 3D UHD/ HD ATSC UHDTV ETRI HDR UHD HEVC MPEG-H 3DA, ROUTE MUX ATSC 3.0 UHD HD. HDR UHD 20Mbps UHD HDR UHD UHD. (References) [1] ISO/IEC, Information Technology Generic Coding of Moving Pictures and Associated Audio Information Part 1 Systems, ISO/IEC :2007(Third edition), October [2] Park, MinKyu; Kim, Yong Han, MMT-based Broadcasting Services Combined with MPEG-DASH. Journal of Broadcast Engineering, Vol.20, No.2, pp , [3] Jinwuk Seok, Younhee Kim, Myungseok Ki, Hui Yong Kim, Jin Soo Choi, "Fast Prediction Mode Decision in HEVC Using a Pseudo Rate-Distortion Based on Separated Encoding Structure", ETRI Journal, Vol.38, No.5, pp , October [4] Park, Chan Seob, et al. Early Termination Algorithm of Merge Mode Search for Fast High Efficiency Video Coding (HEVC) Encoder. Journal of Broadcast Engineering, Vol.18, No.5, pp , [5] Younhee Kim, et al. Tile-level and Frame-level Parallel Encoding for HEVC. Journal of Broadcast Engineering, Vol.20, No.3, pp , May [6] Neuendorf, Max, et al. "The ISO/MPEG unified speech and audio coding standard consistent high quality for all content types and at all bit rates." Journal of the Audio Engineering Society, Vol.61, No.12 pp , December [7] Herre, Jürgen, et al. "MPEG surround-the ISO/MPEG standard for efficient and compatible multichannel audio coding." Journal of the Audio Engineering Society, Vol.56, No.11, pp , December [8] S. Beack, et al. "MPEG Surround Extension Technique for MPEG-H 3D Audio." ETRI Journal, Vol.38, No.5, pp , October [9] Herre, Jürgen, et al. "MPEG spatial audio object coding the ISO/MPEG standard for efficient coding of interactive audio scenes." Journal of the Audio Engineering Society, Vol.60, No.9, pp , October [10] ISO/IEC, Information technology Dynamic adaptive streaming over HTTP (DASH) Part 1 : Media presentation description and segment formats, ISO/IEC : 2014 [11] ATSC, ATSC 3.0 Management and Protocols Signaling, Delivery, Synchronization, and Error Protection, Doc. S r5, Advanced Television System Committee, Washington, D.C., 22 September [12] ATSC, ATSC System Discovery and Signaling, Doc. A/321:2016, Advanced Television System Committee, Washington, D.C., 23 March [13] ATSC, ATSC Physical Layer Protocol Standard, Doc. A/322:2017, Advanced Television System Committee, Washington, D.C., 9 February [14] L. Fay, et al. An Overview of the ATSC 3.0 Physical Layer Specification, IEEE Trans. Broadcast, Vol.62, No. 1, pp , [15] Sunhyong Kwon, et al. Introduction to ATSC 3.0 Physical Layer Standard, Broadcasting and Media Magazine. Vol.20, No.4, 17-27, October [16] Sung Ik Park, et al. Low Complexity Layered Division Multiplexing for ATSC 3.0, IEEE Trans. Broadcast, Vol.62, No.1, pp , [17] Sung-Ik Park, et al. Field Test Results of Layered Division Multiplexing for the Next Generation DTV System, IEEE Trans. Broadcast, Vol.63, No.1, pp , : : ~ : - ORCID : - : UHDTV,,
20 (JBE Vol. 22, No. 6, November 2017) : : ~ : - :,, : ~ : - :,, : : : ~ : /DiMagic Co. Ltd ~ : ETRI AV - ORCID : - :,,, : ~ 2003 : Tokyo Denki University, ~ : ETRI / - :,, : : : ~ 2005 : ~ 2010 : (UST) ~ 2014 : Univ.of Southern California(USC) ~ : AV - : /,, UHD/3D/HDR/VR
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그림 2. 최근 출시된 스마트폰의 최대 확장 가능한 내장 및 외장 메모리 용량 원한다. 예전의 피쳐폰에 비해 대용량 메모리를 채택하고 있지 만, 아직 데스크톱 컴퓨터 에 비하면 턱없이 부족한 용량이다. 또한, 대용량 외장 메모리는 그 비용이 비싼 편이다. 그러므로 기존
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