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What are the technical specifications of the Hi-MD system?

April 26, 2017Hi-MD specifications system Technical

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What are the technical specifications of the Hi-MD system?

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Current MD format Formatting existing MDs into Hi-MD format Hi-MD 1GB Disc Data Capacity 177MB 305MB 1.0GB Magneto-Optical Recording MethodMagnetic Field ModulationMagnetic Field Modulation Domain Wall Displacement Detection Laser Wavelength (λ) 780nm 780nm 780nm NA of Objective Lens 0.45 0.45 0.45 Diameter 64.8mm 64.8mm 64.8mm Thickness of Substrate 1.2mm 1.2mm 1.2mm Tracking Format Groove Recording Groove Recording Groove Recording Addressing Wobbling Groove (ADIP) Wobbling Groove (ADIP) Wobbling Groove (ADIP) Data Modulation EFM 1-7RLL 1-7RLL Data Detection Bit by Bit PRML PRML Bit Length 0.59μm 0.44μm 0.16μm Shortest Mark Length 0.83μm 0.58μm 0.21μm Track Pitch 1.5μm 1.5μm 1.25μm Data Transfer Rate 1.25Mbps @1.2m/s 4.37Mbps @2.4m/s 9.83Mbps @1.98m/s