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| Topic Review |
Tiny_Turtle
Sony Legend
Joined: Oct 09, 2002
Posts: 1116
From: Stockholm, Sweden
 |  Posted: 2002-11-20 04:28
OK, a newbie question on hooking up a DVD to the TV.
Involved parties:
KV29-FX20 TV with dual SCART connectors and S-video input (the latter on the front).
DVP-NS900V DVD with SCART, component & S-video connectors.
I'm assuming component is the best of the three, but since there's no such thing on the TV, would I get better picture quality by connecting three separate cables from the component output that converge in a SCART connector plugged into the TV?
Is there an other way that's better?
/Tiny Connector
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paulaceto
Sony Legend
Joined: Dec 14, 2001
Posts: 1211
From: Rhode Island, USA
 |  Posted: 2002-11-20 06:40
SCART and component are completely different interfaces. You cannot connect them together. Try both S-video and SCART yourself and see which on you like better.
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Tiny_Turtle
Sony Legend
Joined: Oct 09, 2002
Posts: 1116
From: Stockholm, Sweden
| Posted: 2002-11-20 08:05
OK, thanks. Guess the "Three RCAs to SCART" cables I saw yesterday must've been nothing more than just L & R audio + video composite (As stated it was a noob question)
/Tiny Understanding
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JamieF
Sony Buff
Joined: Sep 14, 2002
Posts: 19
From:
 | Posted: 2002-11-20 12:47
You need a fully wired SCART to SCART lead to connect your two pieces of equipment and enjoy component video quality. Ignore the RCA component connectors on your 900, because the SCART supports RGB which is a better type of component video.
Jamie
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Tiny_Turtle
Sony Legend
Joined: Oct 09, 2002
Posts: 1116
From: Stockholm, Sweden
| Posted: 2002-11-21 12:33
Cool. Only one more question, though: Why do expensive projectors have component inputs if SCART is superior? Not trying to be a wise-guy just trying to learn (from patient people thanks guys!)
/TT
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JamieF
Sony Buff
Joined: Sep 14, 2002
Posts: 19
From:
| Posted: 2002-11-21 13:44
Okay, well you did ask...
Component usually refers to YUV which is luminance (black & white signal: Y) and two color difference signals (U and V). U and V are lower bandwidth (or resolution) than Y, because we are less sensitive to color resolution, and storing less info means you can fit more on your storage medium. Color difference is a more efficient way of storing the color information. YUV has the synchronising signals on Y as well, hence just 3 connections.
RGB is the full-blown version of component video (Red Green Blue). These correspond to the guns in your CRT TV. This format is used in post production because it is simple to edit without multi generation losses (rounding errors, etc). RGB usually has a separate wire for composite syncs, so it is usually 4 wire. In the case of computer to monitor connections, there are usually 5 wires, because the horizontal and vertical syncs are on separate wires. Outside of post production, RGB isn't used as a storage format because it takes too much space. However, because all TV's (and projectors) ultimately need to drive their red, green and blue guns (or equiv in LCD/DLP projectors), all signals must be converted to this format, hence its inclusion on SCART.
So why do projectors have YUV component inputs? Because high-end storage equipment usually have these outputs. It is quite straightforward converting from YUV to RGB.
Incidentally, on broadcast equipment, RGBS interconnections use separate connectors like YUV (typically BNC's). Some equipment (a lot projectors) share the connectors between RGB and YUV. SCART is just a consumer connector type that is compact and cheap for getting lots (21) of AV connections in and out of equipment.
Quick summary:
- RGB is an editing / display format
- YUV is a storage format
- RGB is theoretically better, for viewers they are the same
- RGB needs 4 connections, YUV needs 3
I hope this helped a bit.
Jamie
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Tiny_Turtle
Sony Legend
Joined: Oct 09, 2002
Posts: 1116
From: Stockholm, Sweden
| Posted: 2002-11-22 03:29
Thank you, Sir!
Always a pleasure to learn from someone who knows what they're talking about...
/Tē
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