LCD Freeview question

Discussion in 'LCD & LED LCD TVs Forum' started by St0, Jan 14, 2008.

Tags:
  1. St0

    St0
    Active Member

    Joined:
    May 9, 2007
    Messages:
    160
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Location:
    Near Edinburgh
    Ratings:
    +6
    Do all new LCD's upscale to 720 or 1080 for freeview? If not, which freeview upscaler would you recommend?

    Thanks
     
  2. technoflare

    technoflare
    Active Member

    Joined:
    Sep 3, 2004
    Messages:
    473
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    21
    Location:
    Warrington
    Ratings:
    +20
    if they have built in dtt they will or upscale external inputs but may not be as good.
     
  3. Yemeth

    Yemeth
    Well-known Member

    Joined:
    Jun 5, 2007
    Messages:
    5,102
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    136
    Location:
    Hedeby Island
    Ratings:
    +993
    It wont "upscale" to 720/1080i. It will try to stretch/fit the pic onto its pixels, thus the poos quality of SD on LCDs.
     
  4. St0

    St0
    Active Member

    Joined:
    May 9, 2007
    Messages:
    160
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    18
    Location:
    Near Edinburgh
    Ratings:
    +6
    Thanks. I'll wait until Sony brings out PlayTV for the PS3, that should upscale Freeview nicely
     
  5. runas

    runas
    Active Member

    Joined:
    Jun 11, 2007
    Messages:
    238
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    28
    Ratings:
    +28
    Even a PS3 cannot create detail that is not there. Its a different thing with a good high quality DVD source where the 576i (or 576/24p) image can be crispened up reasonably to 1080, but if you are starting with low bandwidth off air broadcasts you will only succeed in sharpening the many artifacts.

    runas
     
  6. LV426

    LV426
    Administrator Staff Member

    Joined:
    Jul 14, 2000
    Messages:
    13,691
    Products Owned:
    0
    Products Wanted:
    0
    Trophy Points:
    166
    Location:
    Somewhere in South Yorkshire
    Ratings:
    +6,262
    Popular misconception that there is some sort of "stretching" process that TVs use, that's not scaling.

    Actually "stretching" IS upscaling. They are one and the same thing. The only way a TV with a native panel resolution higher than a given input signal can make such a picture fit the screen is by upscaling it. So, actually, the TV will upscale* any incoming signal to
    {whatever number of rows of pixels its screen has}p.

    The only issue is how well the upscaling is done - by the scaler in the TV vs. by an external scaler (eg in a player).

    Coupled with............

    In theory, scaling is a process best done only once. Without labouring too much detail, the easiest way to ensure a signal is upscaled just once, to the native panel resolution, is to let the scaler in the TV do it.

    In theory, in most cases, the best results are obtained by letting the source do the de-interlacing (i.e. to convert from 576i to 576p (assuming PAL)) and then let the TV upscale the 576p to whatever it needs.



    * or downscale if necessary
     

Share This Page

Loading...