AccuCORE Brand Concept
Recording/Playback Mechanism (-R) “Laminar Phase Separation”

In recording process, an active material in recording layer is separated into two laminar components, the composition of which are different each other, by irradiating a high power laser beam. Sony’s BD-R disc is designed that the light reflectivity of the recorded area change to very low level.

In read process, a harmless low-power laser beam scans those recorded marks on a disc and retrieves playback signal by using photo detector.

| What is “Blu-ray Disc”? | Application | Outline of Blu-ray Technology | Format Comparison |
| Recording/Playback Mechanism and Recording Materials |
| Recording/Playback Mechanism(-R) “Laminar Phase Separation” |
| Recording Mechanism (-RE) “Phase-change material” | Playback Mechanism (-RE) “Phase-change material” |