[Question] About Japanese Version CD

[CHAS_AYU]

Why some Japanese ver. have a Avex group logo on the plastic box
but some have Compact disc on the plastic box

but both are Japanese ver.

Why there is a difference?

[immel]

The compact disc logo is there because that's the media the CD is distrubuted on, it's a sort of quality guarantee. The copy protected CDs that was invented by Sony are not allowed to put the compact disc logo on them because Panasonic doesn't support their copy protection method, at least this is what I've heard - don't trust me completely because I'm unsure of the original source.

I think those that are copy protected are those with the avex logo while the ones that are not got the compact disc logo.