Professional Disc |
| Media type | Optical disc |
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| Capacity | 23 GB per layer |
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| Read mechanism | 405 nm diode laser |
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| Write mechanism | 405 nm diode laser with a focused beam using more power than for reading |
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| Developed by | Sony |
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| Dimensions | - 12 cm (4.7 in) diameter
- 1.2 mm (0.047 in) thickness
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| Usage | Data storage |
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| Extended from | DVD |
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| Extended to | Blu-ray |
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| Released | 2003 (2003) |
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Professional Disc (PFD) is a digital recording optical disc format introduced by Sony in 2003 primarily for XDCAM, its tapeless camcorder system. It was one of the first optical formats to utilize a blue laser, which allowed for a higher density of data to be stored on optical media compared to infrared laser technology used in the CD and red laser technology used in the DVD format.