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Digital TV SOC

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  1. LG Electronics Inc. Digital TV SOC Nov 6, 2003 SAT GR, DTV Lab

  2. 1994 DIRECTV (미국 위성 1998 DVB-T, S, C (유럽) 1999 ATSC (미국 지상파) 2000 ARIB (일본 위성) TV technology 방식 digital TV Color TV NTSC(’1954 미국) PAL(’1967 독일) SECAM(’1967 프랑스) 1991 MUSE (일본 위성) analog TV SDTV(720x480i) HDTV(1920x1080i) 해상도

  3. DTV technology Broadcasting Convergence/networking mobile 방송 환경 대응 지상파 Data 방송 지상파 DMB 위성 PVR 위성 DMB Cable networking 현장감 (고화질/고음질) 사용성/편리성 이동성 home mobile

  4. DTV 분류 • 분리형 : HD display • Analog TV 수신 가능 • Set top box : DTV 신호 수신 • VSB, MPEG-2 decoder, AC-3 decoder • 일체형 = 분리형 + Set top box • 일체형 DTV • 분리형 DTV • Set top box

  5. PRT Projection TV • LCD Projection TV Display 종류 및 장/단점 • DIRECT view (CRT) TV 장점 : 화질 우수, 가격 저렴 단점 : 대화면 불가능,무게 장점 : 대화면, 가격 저렴 단점 : Convergence, 두께, 높이,무게 장점 : 대화면, 얇다, 높이, 밝기(3판) 단점 : 비싼 가격, On Time(40초) • DLP Projection TV • LCD TV • PDP TV 장점 : 대화면, 얇다, 높이, contrast 단점 : 비싼 가격, On Time(40초) 장점 : 소,중화면, 아주 얇다 단점 : 아주 비싼 가격, 밝기 (형광등) 장점 : 대화면, 아주 얇다, 밝기,시야각 단점 : 아주 비싼 가격, 전력

  6. S/W SOC EPG data broadcasting PVR H/W platform Reception capability A/V processing DTV product leadership Display devices Analog : CRT, PJTV Digital : PDP, LCD A/V decoder VSB/QAM

  7. DTV 수신기 (ATSC) MPEG-2 Video MPEG-2 Video Decoder Display Processor & Graphics System decoder (Transport demux) Video V A V P RF 1 packet (188bytes) Dolby AC-3 DTV tuner Demodulator (8-VSB) Dolby AC-3 Audio Decoder Audio MPEG-2 TS (19.4Mbps) Physical Channel (BW : 6MHz) 27MHz clock recovery PCR Program information Program select Program navigation information • Bandwidth : 6MHz • Data rate : 19.4Mbps User’s program choice

  8. Channel tuning time (ATSC) • RF(IF)  TS • VSB processing (sync/locking, equalizer, de-interleaver, FEC) : ~0.5sec • TS  A/V decoder • PAT (<0.1sec) & PMT (<0.4sec) • PSIP • Video • GOP (I picture) : ~0.5sec • Lip synch by DTS/PTS : ~0.5sec

  9. Applications TV & STB streaming • RF  A/V decoder  audio & display • Network  memory  A/V decoder  audio & display DTV SOC DTV SOC audio audio xDSL display display SDRAM SDRAM PCI card PVR • RF  A/V decoder  memory (decoded) •  PCI bus • RF  memory (TS)  storage (recording) • Storage  A/V decoder  audio & display (playback) DTV SOC DTV SOC audio PCI bus display SDRAM SDRAM HDD

  10. System clock • System clock recovery (27MHz) • Display clock PLL • 27M : 74.25M (4 : 11) • Audio clock PLL • 27M : 48K (1125 : 2) • Video skip/repetition, audio skip/repetition System clock (27MHz) Display PLL HSYNC VSYNC HSYNC 74.25MHz VSYNC Audio PLL Frame SYNC 48kHz FR SYNC

  11. Memory map 0 System decoder • Typical memory • 128Mbit x 2 • 256Mbit x 2 • System decoder • PSIP information • Audio decoder • Video decoder (MPEG-2) • Video bitstream buffer • Anchor frame • Display processor • OSD • Bitmap buffer • CPU 66 Audio decoder 116 Video bitstream 252 Video decoding buffer (3, 4 frames) 1816 Display processor 2398 OSD (960x540) 16bppx2 2652 CPU 4096

  12. buffer buffer buffer buffer buffer buffer Memory bandwidth Systemdecoder Audiodecoder Videodecoder Displayprocessor VCR/PIP OSD/ GFX writing bitstream motioncompensation write afterMB decoding read write read write read write read Memory arbiter 64bits @108MHzmaximum : 864MBytes/sec SDRAM • Memory bandwidth • Global • Local • Local buffer size

  13. Terrestrial (ATSC/DVB) Cable (OpenCable) Satellite (DIRECTV/ARIB) DTV SOC core technology • Worldwide DTV standards • 8VSB/COFDM/QAM/QPSK/8PSK • CAS system • Audio : Dolby AC-3, MPEG, AAC • Video : MPEG-2 MP@ML/MP@HL • Display devices • CRT/PJTV/PDP/LCD/DLP • Device characteristics • Video quality enhancement • Data broadcasting & internet • Graphics engine • High-performance RISC • xDSL • Internet browsing • PVR (personal video recording) • MPEG-2 MP@ML encoder • IDE controller, PCI • MPEG-7, TV-anytime forum • Home networking • IEEE1394 (w/t 5C) • HDMI • USB • Memory card • System-On-A-Chip • RISC, DSP • Analog IP • Verification

  14. RISC core • Overall control • S/A/V control • DMA • Interrupt • Application S/W • Caption engine • Program guide • User interface • Data broadcasting

  15. Peripherals • DMA controller • Interrupt handler • UART • Smart card • Memory card

  16. System decoder : TS • Header : 4 bytes • SYNC/PID/continuity counter • Adaptation field • PCR • Payload • PES : A/V/data, lip sync with DTS/PTS • PSI : section data, PAT/PMT/CAT/MGT/…. Header Payload : PES or PSI section 1 packet (188 bytes)

  17. MPEG-2 TS System decoder • Packet parsing • A/V data  A/V decoder • Navigation data  CPU • System clock recovery (27MHz) System Information (navigation) Systemdecoder PSI Videodecoder Video PES(ES) 1 packet (188bytes) Audiodecoder Audio PES(ES) Data decoder Data

  18. System decoder • Input streams • MPEG-2 TS : ATSC/ARIB/DVB/OC • DIRECTV TS (proprietary) • MPEG-2 PS : DVD • PID filtering • Section filtering (byte-/field-masking) • System clock recovery • CAS (DES-ECB/MULTI-2/CS/CSS)

  19. Video decoder (MPEG2) • MP@HL video : up to 1920x1080 • Highly complex • 6 times more complex than SD video (DVD) • Frame memory : minimum 3 frames Bitstream parser VLD Inverse scan IQ IDCT 8x8 DCT Coeff. Decoded Pictures (I, P, B) Zigzag scan mode MPEG-2 Video ES Q scale factor & Q matrices VLD Dual prime arithmetic Chroma scaling Half-pel prediction Motion vectors Field/frame prediction selection Frame memory

  20. Video decoder • MPEG-2 • SD : MPEG-2 MP@ML • HD : MPEG-2 MP@HL • Dual decoding (2xSD,SD+HD, 2xHD) • Dual tuner • PVR • Memory scalable video decoding • Error concealment • Trick play

  21. Audio decoder • Dolby AC-3 (ATSC) • 5.1 channel • 48kHz, up to 384 kbps • Audio DSP • Audio instruction • Features • Decoding : AC-3 / MPEG / AAC • Sound effects • 5.1 channel source with 2 speakers • 2 channel source with 6 speakers

  22. Video input formats • Video input formats • Analog : single • Digital : multiple • ATSC standards Resolution Frame rate/scan Aspect ratio 1920x1080 24P, 30P, 30I 16:9 1280x720 24P, 30P, 60P 16:9 704x480 24P, 30P, 30I, 60P 16:9 704x480 24P, 30P, 30I, 60P 4:3 640x480 24P, 30P, 30I, 60P 4:3

  23. Display devices & formats 1920x1080 60P (16:9) PDP, LCD 1366x768 60p (16:9) PDP, LCD 1920x1080 30i (16:9) high-end projection 1280x720 60p (16:9) PDP, LCD 720x480 60p (4:3) Direct View, PJTV 720x480 30i (4:3)

  24. Video input & output • Input (2 channels) • Decoded pictures • NTSC/PAL • Component signals (up to 1920x1080i) • PC signal (up to XGA) • Output • Analog : RGBHV, YPbPrHV, RG*B, Y*PbPr, CVBS, S-video • Digital : D1, YCbCr/RGB (30bits) • 60Hz : 1080i/768p/720p/480p/480i, 16:9/4:3 • 50Hz : 1080i/576i, 16:9/4:3 • PC : VGA/SVGA/XGA

  25. Format conversion • Spatial resolution • Scan • interlaced/progressive • Aspect ratio • 4:3/16:9 • Temporal frame rate • 24/30/60/70/85Hz  60Hz, 25/50  50Hz • Chroma sampling • 4:2:0/4:2:2/4:4:4 • Color space conversion • YPbPr/YIQ/RGB

  26. Spatial resolution & scan • De-interlacing (480i input) • Filtering • Interpolation 720x480i 720x480i 720x480p 720x480p 1280x720p 1280x720p 1920x1080i 1920x1080i

  27. Format conversion • Input < output • Input  memory • Memory  De-interlacing/ • FC (interpolation) • FC  display • Input > output • Input  FC (filtering & decimation) • FC  Memory • Memory  display

  28. Aspect ratio conversion • Input (16:9)  display (4:3) pan &scan squeeze letterbox • Input (4:3)  display (16:9) Wide Zoom Crop

  29. Worldwide leader in DTV - LG DTV/DTV, NTSC/NTSC PIP/POP moving still still still moving moving still still still still still still still still still still still still still still still moving still still still still still still still still still still still still still still still still still still still still still still still still still still still still Display window control Single window Picture in picture (PIP) Picture out of Picture (POP) moving still still Multi-PIP 2 active windows Split-screen

  30. 細 淨 鮮 XDRpro • eXcellent Digital Reality • 현장감있는 생생한 HD 영상을 안방에 전달 입력 신호 XDRpro NTSC HD 영상 DVD DTV PC/STB

  31. XDRpro (계속) LG전자 화질 향상 기술 주요 내용 DVD등과 같은 영화 입력에 대해서 최적 처리 SD급 영상을 HD급 영상으로 고화질 변환 영상의 미세한 부분 및 어두운 부분 자동 처리 영상에 존재하는 잡음을 시공간 3차원으로 제거 디스플레이의 컬러 재현 특성을 보상 원 컬러 표현

  32. 수신부 (digital) Video Decoder (digital) XDRpro (digital) Video adjustment display Audio Decoder (digital) Digital AMP Full digital A/V processing • Digital TV : transmission, A/V compression • Full digital video processing • Digital display (PDP, LCD) • Video adjustment : Brightness, contrast, tint, color temperature, gamma correction • Full digital audio processing • Analog AMP  digital AMP

  33. EPG (Electronic Program Guide) • Program guide • 1-button recording with HDD

  34. Data broadcasting • 종류 • 프로그램 연동형 • 독립형 : 날씨, 뉴스, 증권 등 • 규격 • DASE : HTML, JAVA • MHP : Return channel • OCAP : Full internet Video decoding & scaling with positioning Enhanced data (graphic & OSD)

  35. Graphic & OSD • 2-D graphic primitives • Point, block transfer and text manipulation • Full-screen drawing capability up to HD • Arbitrary scaling of OSD bitmap data • RGB/YCbCr color space • Anti-flickering for interlaced display (480i/1080i) • 5 layers, 2/4/8/16/24/32 bits/pixel • 2, 4, 6 and 8-bit alpha blending • H/W cursor (2bits/pixel, 64x64 pixels)

  36. LG DTV ASIC history process # of chips video 3 chips audio CPU • Video 3 chip • - Transport • - Video decoder • - VDP 1st 0.6 mm 0.35 mm 5 1997.10 video 1 chip audio CPU 2nd • Video 1 chip • - LGDT1101 0.25 mm 3 1999.11 A/V 1 chip CPU 3rd • Audio/Video 1 chip • - LGDT1102 0.18 mm 2 2002.3 DTV SOC 4th • DTV SOC • - LGDT1103 (Kwanak) 0.13 mm 1 Under development

  37. 64Mbit SDRAM 64Mbit SDRAM Block diagram LGDT1102 Memory Controller xN PLL Tuner MPEG2 MP@HL Video Decoder Display Processor (Format conversion, 1080i/720p/480p/480i, Scaling/PIP/POP,NTSC/PC/component, NTSC encoder) 3ch D/A Transport De-multiplexer (MPEG2 system) VSB Demo- dulator 3ch D/A OSD & Graphic engine (OSD 5 planes, 2/4/8/16/24/32 bpp, Anti-flickering, 2-D graphic resizing) Audio Decoder DSP (AC3/MPEG/AAC/ DTS/PCM/MP3/ TruSurround) Audio D/A Audio PLL 16-/32-bit RISC CPU FLASH peripherals

  38. 64Mbit SDRAM 64Mbit SDRAM Digital RGB/YCbCr LGDT1102 System decoder Audio decoder Video decoder Display processor Graphic processor OSD controller NTSC/PAL encoder DAC, PLL, audio PLL LGDT3101 VSB receiver Analog RGB/YCbCr NTSC decoder CVBS/S-Video 525i/625i NTSC decoder or PC/component Digital 5.1 ch SPDIF 16/32-bit CPU ATSC DTV system diagram • 2-chip solution

  39. 적용된 제품들 • LCD Projection TV • PRT Projection HDTV • Affordable TV • PDP TV • LCD TV • DLP Projection TV • PVR 복합 HD STB • DIRECTV HD-STB

  40. 감사합니다 sjchoi@lge.com