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Digital Video Transfer (WP2)

Digital Video Transfer (WP2). Digital Video Switch Unit. Video Switch Subunit. VIDEO HUB. HUB Video Subsystem. Changes in D1f: Video Switch Unit and Video Hub Technical Document v.0.4. USB Connection updated System commands in a separate document Power Consumption added

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Digital Video Transfer (WP2)

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  1. Digital Video Transfer (WP2) 22 Nov 2005

  2. Digital Video Switch Unit

  3. Video Switch Subunit

  4. VIDEO HUB

  5. HUB Video Subsystem

  6. Changes in D1f: Video Switch Unit and Video Hub Technical Document v.0.4 • USB Connection updated • System commands in a separate document • Power Consumptionadded • Other minor changes

  7. Digital Video Transfer research, D1e • No changes in the document • Tests have started • 1: Gefen Cable extender • based on MAX3815 cable equalizer circuit • 2: Silicon Image test board • based on SiI 7161 circuit, which has internal cable equalizer

  8. Preliminary cable tests and the results • Test environment - Dell PC with DVI connector supporting 1200 x 1600 x 60Hz mode - ACER 20" 1600 x 1200 x 60Hz UXGA monitor - Nokia Monitor Test Program • Test 1 - Lindy (www.lindy.com) high quality cable - 15 m Super long distance cable - 10 m Super long distance extension cable - Result: 15 m cable worked well and 25 m (connected) also worked without any errors !! (Pict1, Pict2)

  9. Supported Display modes

  10. Test result 2 • Gefen "DVI Super Booster" cable extender - 25 m above mentioned Lindy cables connected - 20 m lower quality cable (Clicktronic) • Result: Worked well with both cables More margin with Lindy cable

  11. Test result 3 • Silicon Image CP7169 Evaluation board as "cable extender" • 25 m Lindy cable • Result: Worked without erros with 25 m Lindy cables Lower quality Clicktronic cables were not tested because the evaluation board does not support the DVI-I connector

  12. Next tests to do • Try to find out a way to do preliminary test with category (cat 6, cat 7) cables using RJ-45 connectors • DVI – RJ45 adapters

  13. Video Switch Unit schematics, D2a • Page 1: Block Diagram • Page 2: FPGA • Page 3: Bus_A_Rcv, Page4: Bus_A_Tr • Page 5: DVI_From_PC, Page6: To_Monitor • Page 7: Control (microcontroller) • Page 8: Bus_B_Rcv, Page 9: Bus_B_Tr • Page 10: Power + To_Table_Unit

  14. 25 ohms load • Silicon Image has confirmed that their circuits work on 25 ohms load • Reserved space on the PCB for DVI switch

  15. Video Switch Unit PCB, D2b • Not yet finalised • Mechanics issues

  16. Video Switch Unit FPGA, D2c • VHDL code written and simulated • place & route made • meets time constraints • faster circuit, stepping 1 (Spartan 3E)

  17. Video Switch Unit SW, D2d • Going on, Jere is doing • Progressing well

  18. Tasks to do, WP2 Design • Finalise PCB design • CAT6 cable tests • Video hub design • Software for Video Switch Unit

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