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vvvv
75 posts
Frequent Visitor
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10-06-2010 14:48
When I started in computer land,the pc monitor resolution was VGA 640 x 480.Eventually this was increased to SVGA 800 x 600 and eventually UXGA 1920 x 1080 - my new ACER lcd monitor powered by a 10.5" Samsung notebook.
I even designed a VGA monitor tester for CRT monitors using a PIC16F84 to produce a R,G,B and white screen.See the ELEKTOR book 'The universal display book for PIC microcontrollers'.
Just recently a TV maufacturer announced a RGB + yellow TV.I know that the PAL color TV system extracts the green color information from the R and B signals.Maybe 40 years ago they should extrated the yellow info.!
Re. Bit rate for TV.The highest is 40 Mbit/sec for bluERAY.Broadcast channels,Cable,freeview,freesat and SKY have unpublished bit rates but vary between 10 and 1 Mbit/sec,so of course affecting the picture quality,
It would be good to design a bit rate in-line monitor but I don't have to technology skills to do this.
At the end of the day it will be many years before UK HD television bitrates will match those of Japan.
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electro_pa
2 posts
Popping In
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19-11-2010 15:29
Your ref. to TV maker offering RGB='Yellow', seems odd. I wonder why? Can you provide reference so I can research?
Your suggestion extracting green from R+B is error.
There is lots of misunderstanding of terms associated with TV. Most come from ANALOGUE TV methods and few are directly applicable to DIGITAL methods.
Green is decoded directly along with red and blue, hence 'RGB' of 'Component Video', the so-called 'HD' analogue video signal, on the rear of most video signal sources.
If you need to understand analogue color TV encoding principals, get to read "Basic Television" by Bernard Grob. Computer era people have never needed to understand that stuff but computer displays are mostly based on it!
Come Digital TV and allied techniques, have changed everything!
Flat panel displays are made with red,green & blue pixels. I understand digital data streams encode RGB pixels directly, at whichever data format being transmitted by the broadcaster.(There are lots of varieties here in Australia. No general agreement!)
(Did your yellow come from a panel maker offering a fourth colour pixel? That would make the pictures 'brighter', if so.)
I hope to hear from you.
Best regards.
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Admin
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23-11-2010 09:39
[ admin ]
content removed. Unable to remove post in its entirety.
Post edited by Elektor Editor
on 23-11-2010 15:35
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