CD-Text information where in subcode? - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 14th March 2002, 09:56 AM   #1
diyAudio Member
 
Join Date: Feb 2002
Location: Germany
Question CD-Text information where in subcode?

I would like to build a display for the CD and track titles. I understand this information should be in the SPDIF data stream as some MD recorders can display it.

Now, where would it be hidden in the data stream? Most receivers give access only to the Q subcode. Consulting the DIR1703 data sheet (CS8412 is not helpful here), in consumer mode, the Q subcode will contain only track number and play time. In professional mode, most bits are simply undefined.

Search in this forum yielded nothing whereas I get thousands of useless hits in a general internet search...

Eric
  Reply With Quote
Old 8th April 2004, 12:51 PM   #2
diyAudio Member
 
Join Date: Feb 2002
Location: Germany
Maybe, two years later, somebody has an answer or a link? Alternatively, a controller to run off S/PDIF of a CD-ROM would do the job, too.
  Reply With Quote
Old 8th April 2004, 04:15 PM   #3
macboy is offline macboy  Canada
diyAudio Member
 
Join Date: Oct 2003
Location: Ottawa, Canada
Quote:
I would like to build a display for the CD and track titles. I understand this information should be in the SPDIF data stream as some MD recorders can display it.
On Sony MD recorders, the CD text is not transferred on the S/PDIF cable. There is a separate connection between the CD player and the MD recorder which is used for (amoung other things) transferring disc and track names. This is called control-A1 or control-A1II, also inaccurately referred to as S-link. The same system is used to transfer this infromation to receivers which have a 2-way remote control, so that the remote control can display the disc and track information (for CD or MD). I have such a remote, and it is very slick.
  Reply With Quote
Old 8th April 2004, 04:21 PM   #4
jwb is offline jwb  United States
diyAudio Member
 
jwb's Avatar
 
Join Date: Mar 2002
Location: San Francisco, USA
Send a message via AIM to jwb
Hi capslock,

As far as I know there is no CD Text information passed in S/PDIF stream. The subcode is only used for SCMS. In the AES/EBU format the subcode is used to identify the transmitting piece of equipment.
  Reply With Quote
Old 8th April 2004, 06:54 PM   #5
macboy is offline macboy  Canada
diyAudio Member
 
Join Date: Oct 2003
Location: Ottawa, Canada
Quote:
The subcode is only used for SCMS. In the AES/EBU format the subcode is used to identify the transmitting piece of equipment.
Perhaps although not required, I suspect that many S/PDIF (consumer/non-pro) devices also use the subcode to identify the source. My receiver will display various information about the source that it is listening to over S/PDIF, including CD-DA, DVD, IECxxxx, sometimes even UPC codes. This is in addition to sampling rate, word size, bitrate, and eccoding format (PCM/AC3/DTS).
  Reply With Quote
Old 8th April 2004, 08:15 PM   #6
Cobra2 is offline Cobra2  Norway
DIY !
diyAudio Member
 
Cobra2's Avatar
 
Join Date: Apr 2002
Location: Stavanger, Norway
Send a message via Skype™ to Cobra2
Default CD Text info:

http://www.ncf.carleton.ca/~aa571/cdtext.htm

http://www.feurio.de/English/faq/faq...e_cdtext.shtml

http://www.disctronics.co.uk/technol...cdgraphics.htm

Arne K
__________________
Don't believe everything you think...
  Reply With Quote
Old 8th April 2004, 08:24 PM   #7
diyAudio Member
 
Join Date: Oct 2001
Location: .
Quote:
Originally posted by capslock
Maybe, two years later, somebody has an answer or a link?
Two years on and no further forward. Is that skill or just bad luck? ROFLMAO
CD-Text is stored in the RW codes in the Lead-In and/or Program area and is formatted according to ISO/IEC 61866 when in the Program Area.

ray
  Reply With Quote
Old 13th April 2004, 08:15 AM   #8
diyAudio Member
 
Join Date: Feb 2002
Location: Germany
Does not seem totally hopeless, does it? If those RW subcodes from the lead-in get transmitted (which I doubt), one would simply have to store them.

The other trick might be to use a CD-ROM drive and have the external controller tickle out the information. This would be a great addition to those kits that are out there.

On the other hand, it may be easier to buy an old CD-player with text on ebay and throw out the DAC....
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
An interesting text about Dac and upsampling gaetan8888 Digital Source 1 28th October 2007 11:31 AM
subcode out ? Bernhard Digital Source 0 4th March 2006 07:47 AM
Eagle: Inverted Text? Devil_H@ck Everything Else 2 27th August 2004 12:22 AM


New To Site? Need Help?

All times are GMT. The time now is 03:14 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2