Re: Color Reference of NTSC Formula?

["Bryan Parkoff" <nospam@nospam.com>]

"Mark McDougall" <msmcdoug@no.spam.iinet> wrote in message 
news:44cc66cf$0$1495$5a62ac22@per-qv1-newsreader-01.iinet.net.au...
> Bryan Parkoff wrote:
>
>>     Do you know the formula with cos / sine and the number of degree to 
>> be translated into RGB signals?
>
> I believe this may be what you're after!?!
>
> <http://www.ntsc-tv.com/images/tv/vector.gif>
>
> Regards,
>
> -- 
> |              Mark McDougall                | "Electrical Engineers do it
> |  <http://members.iinet.net.au/~msmcdoug>   |   with less resistance!"

Mark,

    Thank you for the information.  I have seen this before, but it does not 
answer my question.  I want to know how phase shift produces color.  For 
example, 16 colors below.

0000   0 Black          No Luminance
1000   1 Deep Red        0 Degrees
0100   2 Dark Blue      90 Degrees
1100   3 Purple         45 Degrees
0010   4 Dark Green    180 Degrees
1010   5 Dark Gray     50% Luminance
0110   6 Medium Blue   135 Degrees
1110   7 Light Blue     90 Degrees, Luminance of "3"
0001   8 Brown         270 Degrees
1001   9 Orange        315 Degrees Luminance of "2"
0101  10 Light Gray    50% Luminance
1101  11 Pink            0 Degrees, Luminance of "3"
0011  12 Green         225 Degrees
1011  13 Yellow        270 Degrees, Luminance of "3"
0111  14 Aquamarine    180 Degrees, Luminance of "3"
1111  15 White        100% Luminance



    Think about Deep Red, Dark Blue, and Purple.  You display Deep Red. 
Then, you want to display Purple instead of Deep Red.  You have to add Dark 
Blue to the screen.  It is like Deep Red and Dark Blue are joined together 
like "OR" to become Purple.  Deep Red "OR" Dark Blue = Purple.

    Another example, you want Light Blue, but you have to add Luminance over 
Purple.  Then Purple becomes Light Blue.  Purple "OR" Dark Green (With 
Luminance) = Light Blue.

    One more example.  You want to display Ornage.  It has Deep Red and 
Brown.  Deep Red "OR" Brown = Orange.  You can see two artifact colors in 
one pixel (four dots or pulses as phase shift).  Two arfifact colors are 
Deep Red and Orange.

    It is only a question why Deep Red appears in the left of this pixel. 
The answer might be two zero bits between one bit because of no luminance.

    It is what I am trying to translate number of degrees to 16 individual 
color RGB pixels.

    Do you know what I am trying to clarify in details?  Do you know the 
formula or equation?



Bryan Parkoff