Small form factor optical data storage disc and cartridge
AssigneeVmedia Research, Inc.
InventorsJerry E. Hurst, Jr., Neil Deeman, Steven B. Volk
Life of this patent
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Abstract
An optical data storage disc measuring 32 mm in diameter contains 1 GB of data per layer. The data is designed to be readable by a disc drive that contains a blue wavelength laser, an objective lens having a numerical aperture of 0.72 and conventional DVD controller electronics. This combination of elements allows a full-length movie or a video game to be displayed with DVD-quality on a cell phone or other portable hand held device.
Claims9
An optical data storage disc, the optical data storage disc measuring approximately 32 mm in diameter, the disc comprising a Data Zone consisting of user data of entertainment or educational content, wherein a channel bit length of data in the Data Zone is 67 nm±1% and wherein an average track pitch of data in the Data Zone is 378 nm±0.005 μm.
A cartridge containing an optical data storage disc, the cartridge comprising a plastic shell having lateral walls and a floor, the cartridge further comprising a sheet metal cover plate attached to the plastic shell, a nondata side of the disc being positioned adjacent the floor of the plastic shell, a data side of the disc being positioned adjacent the sheet metal cover plate, the optical data storage disc measuring approximately 32 mm in diameter, the disc comprising a Data Zone consisting of user data of entertainment or educational content, wherein a channel bit length of data in the Data Zone is 67 nm±1% and wherein an average track pitch of data in the Data Zone is 378 nm±0.005 μm.
A combination comprising an optical data storage disc and a disc drive, the optical data storage disc measuring approximately 32 mm in diameter, the disc drive comprising an optical pickup head utilizing a blue laser beam for reading data recorded on the disc, the disc drive comprising an analog front end processor and a DVD controller for processing a signal output from the analog front end processor, wherein the disc comprises a Data Zone consisting of user data of entertainment or educational content, and wherein a channel bit length of data in the Data Zone is 67 nm±1% and wherein an average track pitch of data in the Data Zone is 378 nm±0.005 μm.
Dependencies are inferred from the claim text.