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ilias
Joined: 20 Apr 2007
Posts: 116
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| Posted: Sat Jul 20, 2013 12:56 pm Post subject: x.v.Color & CRT |
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CRT projector can produce 10 bit and 12 bit color?
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barclay66
Joined: 27 Jun 2011
Posts: 1304
Location: Germany
TV/Projector: Marquee 9500 Ultra
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| Posted: Sat Jul 20, 2013 1:20 pm Post subject: |
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Yes. Even as many bits as You can throw at it. The inputs and the signal processing are typically analog, so it depends on the D/A converter of the source device...
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sat Jul 20, 2013 1:54 pm Post subject: |
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| barclay66 wrote: | | Yes. Even as many bits as You can throw at it. The inputs and the signal processing are typically analog, so it depends on the D/A converter of the source device... |
Technically yes, but in a projector you must face other problems.
1.) The noise in the video path limits the usable color resolution, so while you can throw a 10 bit signal to it, but the noise generated in the projector may be more than one LSB. The comparision of the video noise between the different branded pjs are less discussed topics.
2.)The modern colorspaces that use finer color resolution usually have wider gamut than the standard sRGB (for which all the projectors was made for).
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kal
Forum Administrator
Joined: 06 Mar 2006
Posts: 18114
Location: Ottawa, Canada
TV/Projector: JVC DLA-NZ7
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| Posted: Sat Jul 20, 2013 2:32 pm Post subject: |
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You're asking two different things. Bits (10 or 12) and x.v.Color (gamut) are different.
CRT phosphor is what was used to define the SD colour space (Rec601) and also works well for HD (Rec709), but xvYCC or Extended-gamut YCC (also called x.v.Color) is a color space that is much wider. CRT phosphor cannot do x.v.Color.
The number of bits only defines how precisely you can get to a specific point. The granularity.
Kal
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CIR Engineering
Joined: 25 Aug 2008
Posts: 4269
Location: Chicago USA & Berlin Germany
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| Posted: Sat Jul 20, 2013 3:56 pm Post subject: |
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| kal wrote: | You're asking two different things. Bits (10 or 12) and x.v.Color (gamut) are different.
CRT phosphor is what was used to define the SD colour space (Rec601) and also works well for HD (Rec709), but xvYCC or Extended-gamut YCC (also called x.v.Color) is a color space that is much wider. CRT phosphor cannot do x.v.Color.
The number of bits only defines how precisely you can get to a specific point. The granularity.
Kal |
Yup.
And even of it were possible to filter out current phosphor to produce the correct color gamut, the image would probably be too dim.
craigr
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ilias
Joined: 20 Apr 2007
Posts: 116
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| Posted: Sun Jul 21, 2013 2:28 pm Post subject: |
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Thank you my friends!
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