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Proceedings Paper

DVD copy protection issues: technology, consensus, and implementation
Author(s): Paul J. Wehrenberg
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Paper Abstract

Shortly after the initial higher density proposals were put forth for the 120 mm optical disk ROM, analysis and comment on proposed capacity, modulation code, error correction coding, performance, disk handling, volume and file structure, and application requirements were given by an ad hoc computer industry technical working group. As the initial proposals evolved into the DVD Specification, the motion picture industry raised the issue of copy protection for movies. To assist in finding acceptable solutions, the technical working group was expanded by consensus to a larger ad hoc group, the Copy Protection Technical Working Group (CPTWG), with participation from the motion picture (MPAA), consumer electronics (CEMA), and computer (IT) industries. Subgroups were formed to study promising areas, e.g. the Data Hiding Sub Group (DHSG) for watermarking of the video, and the Data Transmission Discussion Group for encryption of 1394 transmissions. Proceeding on a voluntary and open basis, the DHSG developed a request for proposals and undertook analysis of the multiple proposals received from many companies including Digimarc, Hewlett-Packard, Hitachi, IBM, MacroVision, NEC, Philips, Pioneer, Sony, and others.

Paper Details

Date Published: 28 June 1999
PDF: 3 pages
Proc. SPIE 3864, Joint International Symposium on Optical Memory and Optical Data Storage 1999, 38640P (28 June 1999); doi: 10.1117/12.997557
Show Author Affiliations
Paul J. Wehrenberg, Apple Computer, Inc. (United States)


Published in SPIE Proceedings Vol. 3864:
Joint International Symposium on Optical Memory and Optical Data Storage 1999
Shigeo R. Kubota; Ryuichi Katayama; Douglas G. Stinson, Editor(s)

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