TV has increased price

Fifer

HD ready TVs must have the ability to process a 1080i signal, but they need only have a vertical resolution of 768 lines. Regardless of anything else, if a TV has a 768 line panel, it cannot display a 1080 signal of any type without rescaling.

This might help.

(And try to keep the discussion away from personal attacks. It's not only unpleasant, but a tad embarrassing if one gets it wrong).

asbokid

As well as having a minimum vertical resolution of 1080 lines which are scanned in a single frame, to be truly an HD screen (and these standards are constantly evolving), the vertical refresh rate also needs to be 100Hz or more, rather than 50Hz in today's PAL/SECAM standard and 60Hz for the US NTSC..

Unless I am just a poor observer but resolution itself doesn't seem that important.. I was tinkering with a 28" 1080p monitor, and it was a while before I even noticed that I had accidentally put it into 1440x768 resolution!

I guess things like refresh rates will figure more prominently for sufferers of epilepsy or migraines... It has been shown that lower refresh rates, i.e. more flickery screens, adversely affect brain activity, and can trigger or aggravate a neurological attack.

djohn2002uk

Fifer wrote: »

HD ready TVs must have the ability to process a 1080i signal, but they need only have a vertical resolution of 768 lines. Regardless of anything else, if a TV has a 768 line panel, it cannot display a 1080 signal of any type without rescaling.

This might help.

(And try to keep the discussion away from personal attacks. It's not only unpleasant, but a tad embarrassing if one gets it wrong).

• 40" W-series BRAVIA LCD TV
• Built-in Digital TV (MPEG 2) terrestrial tuner (also receives analogue)
• 1920x1080 resolution LCD panel
• High Performance LCD panel
• Super Wide 178 degrees viewing angle
• Fast 8ms response time for smoother motion
• Dynamic Contrast Ratio 8000:1
• Live Colour Creation
• WCG-CCFL Backlight
• BRAVIA ENGINE
• HD Ready with 2 HDMI™ sockets
• Supports 1080p signals
• Digital Audio Amplifier
• SRS Trusurround XT with BBE Digital
• BBE technology for clear and easily audible sound
• PIP Freeze to Pause Important Scenes on the Spot
• High Definition Multimedia Interface (HDMI™)
• PC Input for use as a PC monitor
• Non-Reflective coating on TV frames

576i
YES
480p
YES
576p
YES
1080i
YES
720p
YES
1080p YES (HDMI™/Component)


These are taken from the Sony website and refer to the 40 that I refered to in my post above.
Please note the parts in red, HD Ready and 1080p
No downscaling necessary.

Just an afterthought, it can, at least, be unreliable to obtain your info from Wikapedia where technical input can come from non technical people. No different to here really. And can be a tad embarrasing.

samba

djohn2002uk wrote: »

Just an afterthought, it can, at least, be unreliable to obtain your info from Wikapedia where technical input can come from non technical people. No different to here really. And can be a tad embarrasing.

The same goes for posts here. Although, due to the nature of Wikipedia, it is likely that incorrect information posted there will get corrected, while here people can insist they are correct and then claim the Wikipedia must be wrong because it does not agree with their own understanding. But please don't feel embarrassed, because no one's perfect and we all make mistakes.

samba

djohn2002uk wrote: »

For anyone else, a 1080i TV displays any input via an HDMI lead will display at 1080 lines on an HD ready 1080i TV or at 1080p on a full HD TV.

This is not correct. A HD Ready TV will take the 1080i signal and scale it to whatever the native resolution of the panel is. For "Full HD" TVs, this is 1920x1080. For most "HD Ready" ( but non "Full HD" as "Full HD" TVs are by definition also "HD Ready" ) TVs this is 1366x768 or less. ( Some older plasmas only have a native resolution of 1024x768, but they can still be HD Ready and accept a 1080i input ).

Thus in order to display a 1080i signal at the full resolution of 1920x1080, you need a TV with a panel whose native resolution is 1920x1080 or higher, such as any "Full HD" TV.

Fifer

djohn2002uk wrote: »

Just an afterthought, it can, at least, be unreliable to obtain your info from Wikapedia where technical input can come from non technical people. No different to here really. And can be a tad embarrasing.

Read my post again. I've nothing to be embarrassed about. Everything I said was accurate (unless you can demonstrate otherwise). I didn't get my info from Wiki (I'm an electronics engineer) but quoted it as a useful (and in this case accurate) resource.

HD TVs do not need to have 1080 line displays, but that doesn't mean they cannot. However, without one (and many are 768 line), they cannot display a 1080 line image without rescaling.

djohn2002uk

Fifer wrote: »

Read my post again. I've nothing to be embarrassed about. Everything I said was accurate (unless you can demonstrate otherwise). I didn't get my info from Wiki (I'm an electronics engineer) but quoted it as a useful (and in this case accurate) resource.

HD TVs do not need to have 1080 line displays, but that doesn't mean they cannot. However, without one (and many are 768 line), they cannot display a 1080 line image without rescaling.

I read your post and I sugest you re-read where this started, at post 14 and I replied at post 15. My post was disputed as was soul619's post 13. The inference being that an HD ready set could not produce a picture at 1080 lines because it was only HD Ready and they only have 768 lines. You seemed to concur with this idea.
I have now produced actual specifications on the TV referred to in my earlier post showing it to be a HD Ready set and having 1080 lines. How else would it show HD at 1080p as the spec implies?

Fifer

I'm not sure how I seemed to concur? Everything in my post was factual and accurate. I wasn't agreeing with anyone, but was merely trying to illustrate where confusion may be coming from and attempting to reduce the unnecessary heat of the debate.

david39

Are we not missing the point here:

1080 (p or i, irrespective) will give higher quality detail than standard HD-Ready.

All HD-Ready tvs carry the HD-Ready tag, including 1080's because the public have been told to look for it. If the manufacturer omitted it on a 1080 set then many of the general public would think it was not capable of receiving HD signals. Non-techies do not understand 1080 - even many techies don't, as displayed by the variety of opposing views in this thread , whichever of us is right!

All HD-Ready sets will receive the current highest standard of signal but only a 1080 set will display at its best. If that wasn't so, what is the point in producing or buying 1080 sets - might as well go back to transmitting and receiving at 625 lines.

Pokerlad

djohn2002uk wrote: »

• 40" W-series BRAVIA LCD TV
• Built-in Digital TV (MPEG 2) terrestrial tuner (also receives analogue)
• 1920x1080 resolution LCD panel
• High Performance LCD panel
• Super Wide 178 degrees viewing angle
• Fast 8ms response time for smoother motion
• Dynamic Contrast Ratio 8000:1
• Live Colour Creation
• WCG-CCFL Backlight
• BRAVIA ENGINE
• HD Ready with 2 HDMI™ sockets
• Supports 1080p signals
• Digital Audio Amplifier
• SRS Trusurround XT with BBE Digital
• BBE technology for clear and easily audible sound
• PIP Freeze to Pause Important Scenes on the Spot
• High Definition Multimedia Interface (HDMI™)
• PC Input for use as a PC monitor
• Non-Reflective coating on TV frames

576i
YES
480p
YES
576p
YES
1080i
YES
720p
YES
1080p YES (HDMI™/Component)


These are taken from the Sony website and refer to the 40 that I refered to in my post above.
Please note the parts in red, HD Ready and 1080p
No downscaling necessary.

Just an afterthought, it can, at least, be unreliable to obtain your info from Wikapedia where technical input can come from non technical people. No different to here really. And can be a tad embarrasing.

This ia a "Full HD" TV!! Look at the resolution of the panel it has 1080 lines. This is why it can produce the picture without rescalling. It is not a "HD Ready" TV in the sense used by the manufacturers to discribe a TV's with 768 lines. These are the ones that would need to downscale a 1080 picture.