The UK Home Automation Archive

Archive Home
Group Home
Search Archive


Advanced Search

The UKHA-ARCHIVE IS CEASING OPERATIONS 31 DEC 2024

Latest message you have seen: RE: Very off-topic!


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: svideo->svideo vs. svideo->RGB


  • To: <ukha_d@xxxxxxx>
  • Subject: RE: svideo->svideo vs. svideo->RGB
  • From: "Mark Harrison" <Mark.Harrison@xxxxxxx>
  • Date: Fri, 5 Apr 2002 13:52:49 +0100
  • Delivered-to: ukha_archive@xxxxxxx
  • Delivered-to: mailing list ukha_d@xxxxxxx
  • Mailing-list: list ukha_d@xxxxxxx; contact ukha_d-owner@xxxxxxx
  • Reply-to: ukha_d@xxxxxxx

Keith,
 
This is the best summary of this I've ever seen! Can you make sure it goes as a page up on your website so I can point non-list-members at it???
 
Regards,
 
Mark Harrison
Head of Systems, eKingfisher

****************************************************************************
Kingfisher plc
Registered Office: North West House, 119 Marylebone Road, London NW1 5PX
Registered in England, Number 1664812

This e-mail is only intended for the person(s) to whom it is addressed and
may contain confidential information.  Unless stated to the contrary, any
opinions or comments are personal to the writer and do not represent the
official view of the company.  If you have received this e-mail in error,
please notify us immediately by reply e-mail and then delete this message
from your system.  Please do not copy it or use it for any purposes, or
disclose its contents to any other person.  Thank you for your co-operation.
****************************************************************************
 

-----Original Message-----
From: Keith Doxey [mailto:lists.diyha@xxxxxxx]
Sent: 5 April 2002 13:40
To: ukha_d@xxxxxxxSubject: RE: [ukha_d] svideo->svideo vs. svideo->RGB

NO.
 
Component is TOTALLY different to RGB
 
A TV (or any other LCD/CRT etc) displays 3 signals RED GREEN and BLUE. These contain the information that makes up the picture, additionally the TV requires 2 timing signals - Horizontal and Vertical syncronisation pulses to define when each line or frame of the picture starts.
 
It is how these make it to the display that ultimately decides how good or bad the picture is.
 
Starting witht he best and working down the list, here are the definitions and how many cables are required
 
RGBHV    5 cables
A PC outputs RGBHV from its VGA connector (I wont mention any digital formats as that is not relevant to this topic).  That is the PUREST form of ANALOGUE video you will find as each of the 5 signals is transfered discretely.
RGBS aka RGB    4 cables
Discrete colour signals but a COMPOSITE SYNC (S) signal containing H&V pulses. Many items of domestic video equipment that claim to output RGB actually output RGB+CompositeVideo rather than RGB+CompositeSync. For a TV this is no problem but some monitors can get upset if they expect true sync pulses.
 
RGsB aka SyncOnGreen or SoG     3 cables
As RGBS except that instead of a separate Sync signal is sent on the GREEN colour signal just like Composite Video
 
Component Video aka Y-Cr-Cb    3 cables
A black and white composite video signal containing Luminance LUMA  (Y) Brightness information and composite sync. Cr and Cb are two signals containing matrixed colour information to extrace the Red/Blue from the picture information in the Y signal. One the red and blue is removed the only information left is green.
S-Video aka Y-C    2 cables
A black and white composite video signal containing Luminance LUMA  (Y) Brightness information and composite sync. CHROMA (C) contains ALL the colour information.
Composite Video    1 cable
Almost the lowest of the low. Contains all information for RGB and HV.
RF    can have many signals on 1 cable
The lowest of the low. Composite Video and usually Audio as well, modulated to a much higher frequency but can enable multiple signals to be distributed over the same cable by choosing different carrier frequencies
 
 
 
 

Keith

www.diyha.co.uk
www.kat5.tv

-----Original Message-----
From: Dan Khan [mailto:dan@xxxxxxx]
Sent: 05 April 2002 12:02
To: ukha_d@xxxxxxxSubject: RE: [ukha_d] svideo->svideo vs. svideo->RGB

On a similar off topic :)

My amp switches component video as well as svideo.  My tv has 2 rgb
scarts which are both used.

Is it possible to route signals from the component video outlets on the
amp, into an RGB-enabled scart socket on the TV?  I haven't managed to
find a cable (online) that will do component video --> RGB scart.

Any ideas?

Thanks
-Dan


For more information: http://www.automatedhome.co.uk
Post message: ukha_d@xxxxxxx
Subscribe:  ukha_d-subscribe@xxxxxxx
Unsubscribe:  ukha_d-unsubscribe@xxxxxxx
List owner:  ukha_d-owner@xxxxxxx

Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

________________________________________________________________________
This email has been scanned for all viruses by the MessageLabs SkyScan
service. For more information on a proactive anti-virus service working
around the clock, around the globe, visit http://www.messagelabs.com
________________________________________________________________________

Yahoo! Groups Sponsor
ADVERTISEMENT

For more information: http://www.automatedhome.co.uk
Post message: ukha_d@xxxxxxx
Subscribe:  ukha_d-subscribe@xxxxxxx
Unsubscribe:  ukha_d-unsubscribe@xxxxxxx
List owner:  ukha_d-owner@xxxxxxx

Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.

Home | Main Index | Thread Index

Comments to the Webmaster are always welcomed, please use this contact form . Note that as this site is a mailing list archive, the Webmaster has no control over the contents of the messages. Comments about message content should be directed to the relevant mailing list.