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Proceedings Paper

Bit engine for digital video recording (DVR) on a 12-cm disk with 22-GB user capacity and 50 Mb/s data rate
Author(s): J. J. H. B. Schleipen
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Paper Abstract

At the joint ISOM/ODS in 1999 SONY and Philips proposed a new physical format for a third generation optical disc storage system: DVR, Digital Video Recording. The DVR system enables a storage capacity of at least 22 Gbytes with a data rate of 50 Mbit/s on a single layered re-writable optical disc. The main ingredients of the DVR system are the use of a blue laser (400 nm wavelength) and a high numerical aperture (NA equals 0.85) objective lens. For this purpose a new rigid two-element glass-2P replicated aspherical objective has been developed. The DVR physical standard is based on phase change technology, allowing for removable media with high data throughput and long lifetime, and optical pickups of low complexity. All channel and servo electronics have been breadboarded, conforming to the physical format for DVR. In this paper we present an overview of the DVR bit engine and pay special attention to newly developed components, such as a general purpose laser driver IC, a plastic beam shaper and a collimator actuator for spherical aberration control. We report the results of the format evaluation using this bit engine, and we briefly mention the coupling to the video recording application layer.

Paper Details

Date Published: 18 September 2000
PDF: 5 pages
Proc. SPIE 4090, Optical Data Storage 2000, (18 September 2000); doi: 10.1117/12.399362
Show Author Affiliations
J. J. H. B. Schleipen, Philips Research Labs. (Netherlands)


Published in SPIE Proceedings Vol. 4090:
Optical Data Storage 2000
Douglas G. Stinson; Ryuichi Katayama, Editor(s)

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