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480p 720p DVI Component HDTV Progressive Scan ?

Discussion in 'Televisions' started by soomrox, May 25, 2005.

  1. soomrox

    soomrox
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    Hello

    I am really confused on all this HDTV thing. Please someone Help.
    I bought a 26" LCD TV (Dell W2600) It is HDTV Ready http://www1.euro.dell.com/content/p...=uk&cs=ukdhs1&l=en&s=dhs&~tab=specstab#tabtop
    It has a Native resolution of 1280x768 and it can produce 480i, 480p, 576i, 576p, 720p, 1080i Digital TV.
    Its great because it has many inputs 2x SCART, 2 x Composite, 2 x S-Video, 2 x HDTV component, TV In/Coax (1), DVI and VGA, Audio.
    My Config
    I have connected my Sky Digibox with Scart so no problems there as I get 576i.
    I have connected my PS2 with Component cable and I get 480i and 576i
    I have connected my Panasonic DMR-EH50 DVD Recorder/Player and I get 480p and 576i.

    My main question is that why can't I get 720p or 1080i on any of my config.. Am I using the right cables?

    I have looked at many forums and they talk about DVI cable would give me 720P but then neither the Sky box or DVD Player or my PS2 have those Outputs so how are people using HDTV? Help also advise on any config if I need to change Thanks in Advance
     
  2. Thunder

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    The reason why you cant get 720p is that none of your source components are capable of producing it. The only way to feed your TV with a 720p signal would be with an external scaler that would "scale" the signals from your source components from their currrent resolutions to 720p before feeding it to your TV. Unfortunately there are no widespread sources that supply hi-def (720p/1080i) resolutions without scaling it from a normal standard definition (480i/576i) first. Your TV will scale the incoming signal to fit it's 768 line resolution it's self. It's just that the job it does may not be particularly good :smashin:
     
  3. Thunder

    Thunder
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    When Sky hi-def and HDDVD/Blue-ray come along then you will have true hi-def sources :thumbsup:
     
  4. scarty16

    scarty16
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    I don't know what DVI-CE is, but, it does not look "HD Ready" to me.

    Potentially Analogue HD only
     
  5. scarty16

    scarty16
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    Requirements for the logo “HD ready”
    The EICTA "HD ready" Minimum Requirements for display devices are neutral towards the
    technology used (plasma, LCD, DLP, DLA, LCoS, CRT, ...) as well as the implementation
    thereof (flat panel, rear projection, front projection, direct view, ...).
    A display device has to cover the following requirements to be awarded the logo “HD ready”:
    1. Display, display engine
    • The minimum native resolution of the display or display engine is 720
    physical lines in wide aspect ratio.
    2. Video Interfaces
    • The display device accepts HD input via:
    o Analogue YPbPr1, and
    o DVI or HDMI
    • HD capable inputs accept the following HD video formats:
    o 1280x720 @ 50 and 60Hz progressive (“720p”), and
    o 1920x1080 @ 50 and 60Hz interlaced (“1080i”)
    • The DVI or HDMI input supports content protection (HDCP)
     
  6. soomrox

    soomrox
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    But it can do 480i, 480p, 576i, 576p, 720p, 1080i HDTV according to the Product Information guide. Also I have found on many sites that it has DVI-HDCP 15 pin
     
  7. scarty16

    scarty16
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    You mean it can accept a signal of those types and display them.

    The product spec does not mention whether it can accept a signal at 50hz and/or 60hz.

    It also does not state that it whether the signal can be accepted through the component (analogue) inputs and/or the digital DVI.

    Bearing in mind it is DELL and who are USA based, it will probably only accept 60hz. I hope I am wrong for your sake.

    Regards

    Simon
     
  8. soomrox

    soomrox
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    Does this make a difference if its 50hz or 60hz?
     
  9. scarty16

    scarty16
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    If the source of the signal is 50hz and the reciever does not accepy 50hz then you don't get a picture!!
     
  10. scarty16

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    Sky+ HD will be 50Hz as will most if not all HD DVD players in the UK.
     
  11. Rimmer

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    Sorry to be pedantic but UK DVD players are not '50Hz', and there is no reason to believe that HD-DVD players will be 50Hz.

    UK DVD players support both 525/50 and 625/50 as they are both part of the DVD standard. As a result, players locked to region 2 will happily play region 2 or region free 525/60 discs even though they won't play region 1 discs which are usually 525/60.

    Content providers generally encode region 2 DVD movies at 50Hz in line with PAL VHS videotapes and analogue/digital TV broadcasts, but region 2 DVDs do not need to be 50Hz. Sex and The City Season 1, Region 2, is 525/60 and labelled NTSC.

    HD-DVD and Blu-ray support multiple resolutions and frame rates. It's up to the content provider to decide what field/frame rate to use.
     
  12. Stephen Neal

    Stephen Neal
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    I think the consensus of this thread is :

    Your current sources are only 576/50i, 480/60i and 480/60p capable, which is why you aren't using the 720p and 1080i facilities your display offers.

    Whilst your display correctly copes with 50Hz 576i and 60Hz 480i/p sources, it is not clear if it will cope with both 50 and 60Hz flavours of 720p and 1080i, or just the US 60Hz variants.

    The only HD-capable inputs on your display are likely to be the component analogue, DVI and possibly VGA inputs. The SCARTs, S-video and composite feeds are standard def 576/50i and 480/60i only (possibly with 576/50p and 480/60p via RGB SCART - though not guaranteed)

    For best future-proofing your DVI input should cope with 50Hz signals AND support HDCP, though if your analogue component inputs cope with 50Hz signals you MAY be OK with Sky HD it seems. (Some displays accept 50Hz analogue but not via DVI)
     
  13. soomrox

    soomrox
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    Stephen Neal You make alot more sense here. So yes my TV does play NTSC, PAL, 50hz and 60hz

    Thank you.
     
  14. scarty16

    scarty16
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    Buy in haste repent at leisure
     
  15. scarty16

    scarty16
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    6.2 Video Format Support
    In order to provide maximum compatibility between video Sources and Sinks, specific minimum requirements have been specified for Sources and Sinks.
    6.2.1 Format Support Requirements
    Some of the following support requirements are in addition to those specified in EIA/CEA-861B.
    • An HDMI Source shall support at least one of the following video format timings:
    • 640x480p @ 59.94/60Hz
    • 720x480p @ 59.94/60Hz
    • 720x576p @ 50Hz
    • An HDMI Source that is capable of transmitting any of the following video format timings using any other component analog or uncompressed digital video output, shall be capable of transmitting that video format timing across the HDMI interface.
    • 1280x720p @ 59.94/60Hz
    • 1920x1080i @ 59.94/60Hz
    • 720x480p @ 59.94/60Hz
    • 1280x720p @ 50Hz
    • 1920x1080i @ 50Hz
    • 720x576p @ 50Hz
    • An HDMI Sink which accepts 60Hz video formats shall support the 640x480p @ 59.94/60Hz and 720x480p @ 59.94/60Hz video format timings.
    • An HDMI Sink which accepts 50Hz video formats shall support the 640x480p @ 59.94/60Hz and 720x576p @ 50Hz video format timings.
    • An HDMI Sink which accepts 60Hz video formats, and which supports HDTV capability, shall support 1280x720p @ 59.94/60Hz or 1920x1080i @ 59.94/60Hz video format timings.
    • An HDMI Sink which accepts 50Hz video formats, and which supports HDTV capability, shall support 1280x720p @ 50Hz or 1920x1080i @ 50Hz video format timings.

    High-Definition Multimedia Interface Specification Informational Version 1.0
    • An HDMI Sink that is capable of receiving any of the following video format timings using any other component analog or uncompressed digital video input, shall be capable of receiving that format across the HDMI interface.
    • 1280x720p @ 59.94/60Hz
    • 1920x1080i @ 59.94/60Hz
    • 1280x720p @ 50Hz
    • 1920x1080i @ 50Hz
     
  16. msg

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    Will any 1280 x 768 LCD screen automatically cope with a 768P signal from a DVD player (or other source); this being its native resolution. :confused:
     
  17. Quickbeam

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    It depends on the signal compatibility of the TV.

    Some 768p TVs designed primarily for SD viewing may not have HD compatible inputs, or if they do they may only accept 60Hz signals.
     

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