View
47
Download
8
Category
Preview:
DESCRIPTION
LG Electronics Inc. Digital TV SOC. Nov 6, 2003. SAT GR, DTV Lab. 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 ). - PowerPoint PPT Presentation
Citation preview
Digital TV SOC
LG Electronics Inc.
Nov 6, 2003
SAT GR, DTV Lab
2/39
TV technology
analog TV
digital TV
SDTV(720x480i) HDTV(1920x1080i)
Color TVNTSC(’1954 미국 )PAL(’1967 독일 )
SECAM(’1967 프랑스 )
1991MUSE
( 일본 위성 )
1994DIRECTV( 미국 위성
1998DVB-T, S, C
( 유럽 )
1999ATSC
( 미국 지상파 )
2000ARIB
( 일본 위성 )
방식
해상도
3/39
DTV technology
homehome mobilemobile
BroadcastingConvergence/networking
mobile 방송 환경 대응
지상파
위성
Cable
Data 방송
PVR
networking
지상파 DMB
위성 DMB
현장감 ( 고화질 / 고음질 )현장감 ( 고화질 / 고음질 ) 사용성 / 편리성사용성 / 편리성 이동성이동성
4/39
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
분리형 DTV 일체형 DTV Set top box
5/39
Display 종류 및 장 / 단점 PRT Projection TV LCD Projection TV DIRECT view (CRT) TV
PDP TV LCD TV DLP Projection TV
장점 : 화질 우수 , 가격 저렴단점 : 대화면 불가능 , 무게
장점 : 대화면 , 가격 저렴단점 : Convergence, 두께 , 높이 , 무게
장점 : 대화면 , 얇다 , 높이 , 밝기 (3 판 )단점 : 비싼 가격 , On Time(40 초 )
장점 : 대화면 , 얇다 , 높이 , contrast단점 : 비싼 가격 , On Time(40 초 )
장점 : 소 , 중화면 , 아주 얇다단점 : 아주 비싼 가격 , 밝기 ( 형광등 )
장점 : 대화면 , 아주 얇다 , 밝기 , 시야각단점 : 아주 비싼 가격 , 전력
6/39
DTV product leadership
Display devicesAnalog : CRT, PJTVDigital : PDP, LCD
S/WEPGdata broadcastingPVR
SOCH/W platformReception capabilityA/V processing
VSB/QAM A/V decoder
7/39
DTV 수신기 (ATSC)
Systemdecoder
(Transportdemux)
MPEG-2Video
Decoder
DisplayProcessor
&Graphics
Dolby AC-3Audio
DecoderMPEG-2 TS(19.4Mbps)
RF
MPEG-2Video
27MHz clockrecovery
Programnavigationinformation
DolbyAC-3
PCR
User’s program choice
PhysicalChannel
(BW : 6MHz)
Audio
Video
Demodulator(8-VSB)
DTVtuner
Programselect
Programinformation
• Bandwidth : 6MHz • Data rate : 19.4Mbps
1 packet(188bytes)
V A V P
8/39
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
9/39
Applications
DTV SOC
SDRAM
audio
display
•RF A/V decoder audio & display
TV & STB
DTV SOC
SDRAM
xDSLdisplay
•Network memory A/V decoder audio & display
streaming
DTV SOC
SDRAM
•RF A/V decoder memory (decoded) PCI bus
PCI card
PCI bus DTV SOC
SDRAM
•RF memory (TS) storage (recording) •Storage A/V decoder audio & display (playback)
PVR
HDD
audio
display
audio
10/39
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)
DisplayPLL
AudioPLL
74.25MHz
48kHz
HSYNCVSYNC
Frame SYNC
HSYNC
VSYNC
FR SYNC
11/39
Memory mapSystem decoder
0
Audio decoder66
Video bitstream116
Videodecoding
buffer(3, 4 frames)
252
Display processor
1816
OSD (960x540)16bppx2
2398
CPU
2652
4096
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
12/39
Memory bandwidth
SDRAM
Memory arbiter
motioncompensation
write afterMB decoding
read write
Audiodecoder
Systemdecoder
Videodecoder
Displayprocessor
VCR/PIPOSD/
GFX
64bits @108MHzmaximum : 864MBytes/sec
write read write readwritingbitstream
read
Memory bandwidth Global Local
Local buffer size
buffer buffer buffer buffer buffer buffer
13/39
DTV SOC core technology
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
Data broadcasting & internet • Graphics engine• High-performance RISC• xDSL• Internet browsing
Worldwide DTV standards• 8VSB/COFDM/QAM/QPSK/8PSK• CAS system• Audio : Dolby AC-3, MPEG, AAC• Video : MPEG-2 MP@ML/MP@HL
Cable(OpenCable)
Terrestrial(ATSC/DVB)
Satellite(DIRECTV/ARIB)
Display devices• CRT/PJTV/PDP/LCD/DLP• Device characteristics • Video quality enhancement
14/39
RISC core Overall control
S/A/V control DMA Interrupt
Application S/W Caption engine Program guide User interface Data broadcasting
15/39
Peripherals
DMA controller Interrupt handler UART Smart card Memory card
16/39
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/….
Payload : PES or PSI sectionHeader
1 packet (188 bytes)
17/39
System decoder
Packet parsing A/V data A/V decoder Navigation data CPU
System clock recovery (27MHz)
Audiodecoder
Systemdecoder
Videodecoder
SystemInformation(navigation)
MPEG-2 TS
VideoPES(ES)
AudioPES(ES)
PSI
DatadecoderData
1 packet(188bytes)
18/39
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)
19/39
Video decoder (MPEG2)
MP@HL video : up to 1920x1080 Highly complex
6 times more complex than SD video (DVD) Frame memory : minimum 3 frames
VLD
MPEG-2Video ES
Inversescan
IQIDCT8x8
VLDDual primearithmetic
Chromascaling
Half-pelprediction
Framememory
DCTCoeff.
Zigzag scan mode
Q scale factor & Q matrices
Motionvectors
DecodedPictures(I, P, B)
Field/frame prediction selection
Bitstreamparser
20/39
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
21/39
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
22/39
Video input formats Video input formats
Analog : single Digital : multiple
ATSC standards
1920x1080 24P, 30P, 30I
1280x720 24P, 30P, 60P
704x480 24P, 30P, 30I, 60P
704x480 24P, 30P, 30I, 60P
16:9
16:9
16:9
4:3
640x480 24P, 30P, 30I, 60P 4:3
Resolution Frame rate/scan Aspect ratio
23/39
Display devices & formats1920x1080 30i (16:9)high-end projection
720x480 30i (4:3)
1366x768 60p (16:9)PDP, LCD
1280x720 60p (16:9)PDP, LCD
720x480 60p (4:3)Direct View, PJTV
1920x1080 60P (16:9)PDP, LCD
24/39
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
25/39
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
26/39
Spatial resolution & scan
De-interlacing (480i input) Filtering Interpolation
720x480i
720x480p
1280x720p
1920x1080i
720x480i
720x480p
1280x720p
1920x1080i
27/39
Format conversion Input < output
Input > output
•Input memory
•Memory De-interlacing/
FC (interpolation)
•FC display
•Input FC (filtering & decimation)
•FC Memory
•Memory display
28/39
Aspect ratio conversion Input (16:9) display (4:3)
Crop Wide Zoom
letterbox pan &scan squeeze
Input (4:3) display (16:9)
29/39
Display window controlPicture in picture (PIP)
Worldwide leader in DTV - LGDTV/DTV, NTSC/NTSC PIP/POP
Split-screen
Picture out of Picture (POP)
still
still
moving
Multi-PIP
still
still
still
still
stillstill
still
still
still
still
still
stillstillstillstillstillstill stillstill
moving
stillstill stillstill
stillstill stillstill
2 active windows
still
still
moving
still
still
moving stillstill
still
still
still
still
still
stillstillstillstillstillstill stillstill
moving
Single window
30/39
XDRpro eXcellent Digital Reality
현장감있는 생생한 HD 영상을 안방에 전달
眞 細淨 鮮
입력 신호입력 신호
NTSC
DVD
DTV
PC/STB
HD 영상
XDRpro
31/39
XDRpro ( 계속 )주요 내용LG 전자 화질 향상 기술
DVD 등과 같은 영화 입력에 대해서 최적 처리
영상에 존재하는 잡음을 시공간 3 차원으로 제거
디스플레이의 컬러 재현 특성을 보상 원 컬러 표현
영상의 미세한 부분 및 어두운 부분 자동 처리
SD 급 영상을 HD 급 영상으로 고화질 변환
32/39
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
수신부(digital)
VideoDecoder(digital)
XDRpro(digital)
Videoadjustment
display
AudioDecoder(digital)
DigitalAMP
33/39
EPG (Electronic Program Guide)
Program guide 1-button recording with HDD
34/39
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)
35/39
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)
36/39
LG DTV ASIC history
1st
2nd
3rd
4th
video 3 chips
• Video 3 chip - Transport - Video decoder - VDP
• Video 1 chip - LGDT1101
• Audio/Video 1 chip - LGDT1102
• DTV SOC - LGDT1103 (Kwanak)
video 1 chip
A/V 1 chip
DTV SOC
audio CPU
audio CPU
CPU
0.6 m0.35 m
0.25 m
0.18 m
0.13 m
process
1997.10
1999.11
2002.3
Under development
5
3
2
1
# of chips
37/39
Block diagram
VSBDemo-dulator
AudioD/A
Tuner
16-/32-bit RISC CPU
TransportDe-multiplexer
(MPEG2 system)
AudioDecoder
DSP(AC3/MPEG/AAC/DTS/PCM/MP3/
TruSurround)
MPEG2 MP@HLVideo Decoder
Display Processor(Format conversion,
1080i/720p/480p/480i,Scaling/PIP/POP,
NTSC/PC/component,NTSC encoder)
OSD &Graphic engine(OSD 5 planes,
2/4/8/16/24/32 bpp,Anti-flickering,
2-D graphic resizing)
Memory Controller
3chD/A
3chD/A
xNPLL
AudioPLL
FLASH peripherals
64MbitSDRAM
64MbitSDRAM
LGDT1102
38/39
ATSC DTV system diagram 2-chip solution
LGDT3101VSB receiver LGDT1102
System decoderAudio decoderVideo decoder
Display processorGraphic processor
OSD controllerNTSC/PAL encoder
DAC, PLL, audio PLL
16/32-bit CPU
AnalogRGB/YCbCr
DigitalRGB/YCbCr
CVBS/S-Video525i/625i
64MbitSDRAM
64MbitSDRAM
NTSC decoder
NTSC decoder orPC/component
Digital 5.1 chSPDIF
39/39
적용된 제품들 PRT Projection HDTV LCD Projection TV Affordable TV
PDP TV LCD TV DLP Projection TV
DIRECTV HD-STB PVR 복합 HD STB
40/39
sjchoi@lge.com
감사합니다
Recommended