MikeB on 01 June 2009
@ Ausfalcon
The indirect summary you are linking to just states:
"PSP uses a new, Sony-developed optical media called the Universal Media Disc (UMD), which offers game software, full-motion video and other digital content. The UMD can store up to 1.8 Gbytes of digital data. Kutaragi said Sony has been in talks with several companies to make UMD the de facto compact storage media for the next generation of SD-quality video."
I don't read in this what you stated. I don't know of any other Mini-DVD or similar storage media standard.
