Test of HDMI in 4k/UHD Consumer Devices. Presented by Edmund Yen

Transcription

1 Test of HDMI in 4k/UHD Consumer Devices Presented by Edmund Yen

2 Topics ı UHD Market ı HDMI2.0 Features for UHD ı Testing of HDMI2.0 ı R&S Test Solution Test of HDMI in 4k/UHD Consumer Devices 2

3 UHD Market Test of HDMI in 4k/UHD Consumer Devices 3

4 From Full HD to Ultra HD HDMI1.0 to 1.2a HDMI1.3 to 1.4b HDMI 2.0 to 2.0b HDMI 2.1 (not yet published) Release date 2002 to to to 2016 Dec 2017? Maximum transmission bandwidth Maximum defined HD Ready resolution and frame rate Maximum defined UHD resolution and frame rate 4.95 Gbit/s 10.2 Gbit/s 18.0 Gbit/s 48.0 Gbit/s 60fps 120fps 120fps 120fps fps 60fps 120fps 60fps Full HD Ultra HD Test of HDMI in 4k/UHD Consumer Devices 4

5 When UHD becomes noticeable ı Human visual system limits the detection of details from a distance ı When benefit starts to become noticeable 4k UHD TV (red) 110 TV closer then 14 ft (4.3m) 65 TV closer then 8 ft (2.4m) 8k UHD TV (orange) 110 TV closer then 7 ft (2.1m) 65 TV closer then 4 ft (1.2m) Reasonable benefit of 4kUHD in home environment Screen Size versus viewing distance Test of HDMI in 4k/UHD Consumer Devices 5

6 HDMI2.0 Features for UHD Test of HDMI in 4k/UHD Consumer Devices 6

7 Supported 4k Formats 8bit 10bit 12bit 16bit RGB 4:4:4 RGB 4:4:4 RGB 4:4:4 4:2:2 RGB 4:4:4 RGB 4:4:4 4:2:0 4:2:0 4:2:2 4:2:0 4:2:0 Remarks Formats in green - already supported in HDMI 1.4 4:2:2 always in 12 bit, all other formats required deep color mode for 10/12 and 16bit 10bit and 12bit format uses BT.2020 colorimetry (16bit not defined in ITO BT ) Test of HDMI in 4k/UHD Consumer Devices 7

8 BT.2020 Colorimetry ı Improve of color reproduction, especially in green HD and 4k with 8 bit Rec 709 4k > 10 bit ITU-R BT.2020 ı Signaled in the AV Info Frame via Extended Colormetry Test of HDMI in 4k/UHD Consumer Devices 8

9 HDR High Dynamic Range ı Increase of dynamic range ı Provides more details in dark and bright areas ı Signaled in Dynamic Range and Mastering InfoFrame ı HDMI2.0 supports two versions HDR10 / SMPTE ST 2084, often called PQ (perceived quality) HLG (hybrid logical gamma curve) ı No support of dynamic meta data like Dolby Vision, HDR+ and as planned for HDMI2.1 Test of HDMI in 4k/UHD Consumer Devices 9

10 HDR HDR10 versus HLG ı HDR10 Media Profile (HDR10) Originally announced by CTA in August 2015 EOTF defined in SMPTE ST 2084 Allows dramatically scene designs in streaming and BD ı Hybrid Log-Gama (HLG) Originally invented by BBC and NHK EOTF function defined in ITU BT.2100 Compatible to SDR thanks to combination of linear and non-linear transfer function ( Knee Point) Enables HDR broadcasting within existing data channels Electro Optical Transfer Function (EOTF) Test of HDMI in 4k/UHD Consumer Devices 10

11 TMDS Scrambling ı Reduction of Electro-Magnetics Interference (EMI) and Radio Frequency Interference (RFI) ı Mandatory for TMDS Bit Rates above 3.4 Gbit/s ı Recommended for TMDS bit rates below 3.4 Gbit/s Sink devices signals scrambling capability in the Vendor specific data block Test of HDMI in 4k/UHD Consumer Devices 11

12 Status Control and Data Channel (SCDC) ı Register in HDMI sink device ı Allows the exchange of data between HDMI source and HDMI sink devices ı Communication via DDC BUS (I²C) ı HDMI sink devices signals SCDC capability in the vendor specific data block Test of HDMI in 4k/UHD Consumer Devices 12

13 SCDC Application ı Messages (examples) Scrambling enabled TMDS clock mode (for TMDS above 3.4Gbit/s the TMDS clock is devided by 4!) Channel lock and error information The sink device can notify the source device of errors on TMDS data lines TMDS Decoder SCDC Register TMDS Data DDC BUS Test of HDMI in 4k/UHD Consumer Devices 13

14 Content protection HDCP2.2 ı Specified by DCP labs ı Mandatory for transmitting of protected 4K-content via HDMI2.0 ı A source that is connected to a sink that does not support HDCP2.2 can down scale the content to 1080p and use HDCP1.4 Test of HDMI in 4k/UHD Consumer Devices 14

15 Testing of HDMI2.0 Test of HDMI in 4k/UHD Consumer Devices 15

16 Test purpose ı Devices HDMI Source (STB, BD, ) HDMI Sink (TV, Monitor) AV Receiver Repeater Cable Silicon Chipsets ı Areas R&D and QA Production Installation Certification ı Subjects Protocol TMDS physical analysis Picture quality Performance Test of HDMI in 4k/UHD Consumer Devices 16

17 Example: HDR Source Testing HDMI Analyzer Video RF BD HDMI 2.0 ı ı Check if video source interprets HDR Meta Data Block of EDID correctly Feed in HDR video content Analyzer provides EDID w/o HDR Meta Data Block Source must not send HDR Analyzer provides EDID with HDR Meta Data Block Source has to send HDR Feed Non-HDR video content Analyzer provides EDID with HDR Meta Data Block and Source must not send HDR Check Dynamic and Mastering Range Info Frame Check consistency with Info Frame decoder Run compliance test HF1-53 Test of HDMI in 4k/UHD Consumer Devices 17

18 Example: HDR Sink Testing HRD Test Pattern HDMI Generator HDMI 2.0 ı ı ı Check HDR Static Meta Data Block in EDID provided by sink DUT Use EDID Interpreter to check if sink provides Run compliance test HF2-54 Check if Sink reads the Dynamic Range and Master Info Frame Use HDMI generator to modify the info frame Sink has to switch between SDR and HDR Check panel performance Send pre-equalized HDR test pattern Check brightness gradient visually Send Lx Cx pattern Check display brightness with spectrometer Test of HDMI in 4k/UHD Consumer Devices 18

19 Example: HDCP source testing HDMI Analyzer Video RF BD HDMI 2.0 ı Check if a Set-Top Box correctly handles UHD copy protection Feed in UHD protected content Set HDMI Analyzer to emulate a HDCP2.2 sink device STB has to provide the content in UHD format with HDCP2.2 protection Set HDMI Analyzer to emulate a HDCP1.4 sink device STB has to provide the content in HD format with HDCP1.4 protection Set HDMI Analyzer to emulate a sink device without HDCP capability STB has to stop the video play out with a suitable message Test of HDMI in 4k/UHD Consumer Devices 19

20 Example: UHD HDMI Cable Check in Production Line and QA Process Controller HDMI Generator and Analyzer PASS Fail PASS PASS ı ı Check TMDS channel performance with UDH HDMI signal Clock detected All channels locked No error on data channel 0, 1 and 2 Check of all control lines +5V HPD CEC BUS I²C BUS (DDC-BUS) ARC, HEC Data channel monitoring with SCDC Test of HDMI in 4k/UHD Consumer Devices 20

21 Example: Automated format test at AV Receiver HDMI In HDMI OUT ı For each video format to be tested Send UHD video sequence to AV Receiver Check video on AV Receiver output with AV Distortion Analyzer Video Distortions Picture Freeze Black Frames Pixel Errors HDMI Generator and Analyzer Process Controller AV Distortion Analysis Test of HDMI in 4k/UHD Consumer Devices 21

22 Compliance Testing ı ı ı Defined in High-Definition Multimedia Interface Version 2.0x Compliance Test Specification Separated in Source Tests Sink Tests Repeater Tests (combination of source and sink tests) CEC Device Tests Self certification or by ATC (Authorized Test Centers) Test of HDMI in 4k/UHD Consumer Devices 22

23 R&S Test Solution Test of HDMI in 4k/UHD Consumer Devices 23

24 Modular Concept Base units AV interface modules / options AV analysis options Broadcast modulator options Test of HDMI in 4k/UHD Consumer Devices 24

25 Base Units Picture R&S VTC R&S VTE R&S VTS Name Video Test Center Video Tester Compact Video Tester Height 4 HU 3 HU 1 HU Width / 2 19 / 2 Display 11,6 7 DVI connector Module slots Application R&D and QA Test Systems Production Identical feature set and instrument operation Test of HDMI in 4k/UHD Consumer Devices 25

26 HDMI 2.0 Generator Application ı Test of UHD sink devices Wide range of test images Moving pattern User defined pattern import Support of CEA and VESA Formats User defined timing Full HDCP control Info Frame editor EDID reader SCDC register check Sink compliance tests Test of HDMI in 4k/UHD Consumer Devices 26

27 HDMI 2.0 Analyzer Application ı Test of UHD source devices Format analysis EDID import Video timing analysis Audio protocol view Full HDCP Control SCDC register Source compliance tests Test of HDMI in 4k/UHD Consumer Devices 27

28 Complementary Video and Audio Applications R&S VT-B2380 TMDS Time domain analysis R&S VT-K2100 Video analysis R&S VT-K2111 Audio/Video distortion analysis R&S VT-K2100 Audio analysis Test of HDMI in 4k/UHD Consumer Devices 28

29 Thank you for your attention! Any questions? Test of HDMI in 4k/UHD Consumer Devices 29