TV Acronym Buster

Discussion in 'General TV Discussions Forum' started by Mark Hodgkinson, Mar 5, 2016.


    1. Mark Hodgkinson

      Mark Hodgkinson
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    2. Trollslayer

      Trollslayer
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      While some of the descriptions may be oversimplified for the more expert members I think it is well pitch for those wanting to understand what is discussed in reviews etc.
      A good step on from initial understanding of TVs.
       
    3. Anaglypta

      Anaglypta
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      Thanks @Mark Hodgkinson

      Nice to have a round up of all the terms in one place. :)

      I note that you haven't included DASH (Dynamic Adaptive Streaming over HTTP)in your list. This technology is being used increasingly by streaming services like iPlayer, Youtube etc. so think it should get a mention.

      John.
       
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    4. stblob

      stblob
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      Nowadays you need a degree in rocket science just to buy a TV. With all this so called enhancing tech that in reality does nothing but increase the price tag.
       
    5. delivrex

      delivrex
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      Hi Mark, I happen to possess a Samsung LE32C530 from the late 2010 and I was wondering if you could possibly provide me with the exact White Balance values? I've read your posts on a relevant thread and I applied yours and Nielo's settings but couldn't find a suitable closure (so to speak). Nielo's settings became over bearing within a few days due to high saturation and extreme redness and now I'm trying yours and I've noticed you didn't alter R/G Offset and there is also a significant increase in the B Gain and R Gain (Just like Nielo although he took it up to 45) whereas in your review you mentioned a Blue tint was already present; can you kindly clarify?
       
    6. BrightonChris

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      You need a second degree to try and work out what all the settings do once you get the overpriced tv!
       
    7. Trollslayer

      Trollslayer
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      Or you could read the manual even though there is a male gene against that.
       
    8. Spacecat

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      Interesting read.

      I may be wrong but there does seem to be some confusion or it's not totally clear at the moment which is the best overall tv technology

      Is it oled or Lcd?
       
    9. Chester

      Chester
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      That's because there is no clear winner. LED LCDs can go brighter, OLED is better at shadow detail and deep blacks. When you see them set-up properly in a demo room or home environment, you get to see their strengths. It's down to the individual.

      Needless to say, budget very much (currently) plays a part in deciding which technology to go with.

      @Mark Hodgkinson Are there any current TVs with CCFL now?
       
    10. Toon Army

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      The Bristol Sound & Vision HDR demostration confused the matter even further in my case.
       
    11. trivialsid

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      Why is that ?
       
    12. Mark Hodgkinson

      Mark Hodgkinson
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      MPEG-Dash is indeed worthy of a mention, thanks, I'll stick it on my to do list.
       
    13. geogan

      geogan
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      "OELD TVs" - typo there in the OLED definition @Mark Hodgkinson .

      And could you explain difference between 8bit, 8bit+FRC and 10 bit panel technologies?

      Also I notice a lot of the TV sellers are using "screen refresh" as a way of differentiating different priced TVs eg. from 50Hz to 1600Hz. Can you put a definition for that? It's some sort of backlight scanning refresh speed isn't it? But how that affects picture I don't know... sounds like marketing BS to me...
       
      Last edited: Mar 7, 2016
    14. Mark Hodgkinson

      Mark Hodgkinson
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      Not really the right thread and that review was over 5 years ago now but you are in a ridiculous amount of luck as the TV is is my kitchen! I'll message you the settings.

      You may still be able to get ultra cheap TVs with CCFL but I'm not sure. There are still plenty in circulation though ^^^

      Fixed, thanks!

      That doesn't really fit in with the acronym theme but see here :)

      Television Terms - TV Glossary
       
    15. geogan

      geogan
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      Thanks - stupid me - didn't notice it was acronyms only!

      You missed my last edit - "Difference between 6bit, 8bit, 8bit+FRC and 10 bit panels".

      I just checked the glossary page and no mention of panel bit depth. Can you add something about this important part of display tech into glossary.

      I'm a bit confused about them myself i.e. which are different and which are just different names for the same thing eg. is a 10bit panel actually 8bit+FRC? Is an 8-bit panel actually 6bit+FRC - I thought I read somewhere that they are...
       
    16. Mark Hodgkinson

      Mark Hodgkinson
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      No worries.

      I did miss it. Yeah, that's worth writing up in there, I think. Leave it with us.
       
    17. geogan

      geogan
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      I actually found a good explanation on TFTcentral which is eye-opening (like i think no such thing as real 10-bit panel - just 8bit+FRC):


      Dithering and Frame Rate Control (FRC) relate to the colour depth of a monitor panel and are technologies used to boost the colours which the matrix can display. For instance TN Film screens are traditionally more economical than other technologies when it comes to colour depth. In fact, they only display 64 red, 64 blue and 64 true green shades by default through pixel rotations. The maximum amount of colours achievable from liquid crystal rotation alone is 262,144. In order to reach 16 million colours and above, panel manufacturers commonly use two technologies: Dithering and Frame Rate Control (FRC). These terms are often interchanged, but strictly can mean different things.
      • Spatial Dithering - This dithering method involves assigning appropriate colour values from the available colour palette to close-by pixels in such a way that it gives the impression of a new colour tone which otherwise could not have been created at all. In doing so, there complex mappings according to which the ground colours are mutually assigned, otherwise it could result in colour noise / dithering noise. Dithering can be used to allow 6-Bit panels, like TN Film, to show 16.2 million perceived colours. This can however sometimes be detectable to the user, and can result in chessboard like patterns being visible in some cases. Spatial dithering is rarely used in the modern market and instead Frame Rate Control is more widely utilised.

      • Frame Rate Control / Temporal Dithering - The other method is Frame-Rate-Control (FRC), also referred to sometimes as temporal dithering. This works by combining four colour frames as a sequence in time, resulting in perceived mixture. In basic terms, it involves flashing between two colour tones rapidly to give the impression of a third tone, not normally available in the palette. This allows a total of 16.2 reproducible million colours in 6-bit TN Film matrices. FRC is also used to enhance the colour depth of 8-bit panels, boosting them from their standard 16.7 million colours to 1.07 billion in the case of "10-bit" panels (8-bit + FRC). There are a number of FRC algorithms which vary in their effectiveness. Sometimes, a twinkling artefact can be seen, particularly in darker shades, which is a side affect of such technologies.

       
    18. delivrex

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    19. babator

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      Good glossary, now please add a companion article expaining what the manufacturers' marketing names map to (ie. Samsung SUHD = HDR, HDR10, UHD, WCG, UHD Premium? and Hisense ULED 3.0 = HDR, HDR10?, FALD, UHD, WCG and so on)?

      Maybe it is too much to ask. But all the TV makers seem bent on confusing the issue with their marketing...

      Oh, maybe one more term to the table - BBC's hybrid log gamma HDR?
       
      Last edited: Mar 8, 2016
    20. Trollslayer

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      I think we need to agree on a reasonable place to stop or it will keep growing like a government IT project.
       
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    21. SonOfSJ

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      May I ask for an expansion of CCFL please to be added to the list? It is mentioned in the context of LCDs, without saying what CCFL actually is ......
       
    22. mike7

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      Cold cathode fluorescent lamps,. The predecessor to the current LED back illumination of LCD screens. I still believe they gave a much better performance with less shadowing in corners. However LEDs meant lower power consumption and thinner screens.
       
      Last edited: Mar 21, 2016

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