A method and a recording device for formatting arid recording on a multi-layer phase-change type optical disc include recording areas on first and second layers of the optical disc according to a predefined sequence, so that an area of the first layer where an incident radiation beam passes through is...http://www.google.com/patents/US7187640?utm_source=gb-gplus-sharePatent US7187640 - Method for recording on multi-layer phase-change optical discs
