Jean-Louis Duhamel

Title: The Innovations of Jean-Louis Duhamel

Introduction

Jean-Louis Duhamel is a notable inventor based in Morsang S/orge, France. He has made significant contributions to the field of optical disk technology, particularly in the area of copy protection. His work is essential in the fight against piracy in digital media.

Latest Patents

Duhamel holds a patent for a copy-protected optical disk and the protection process for such a disk. This invention relates to an optical disk that includes at least one spiral track with information marks written in sectors that have substantially sequential addresses along the track. The disk features a copy protection zone (PZ) that comprises two equal-sized parts, each containing a series of sectors designated by identical addresses. The data in this zone is shared between the sectors of the two parts, with each sector carrying an identifier characteristic of its respective part. This innovation is particularly applicable to anti-piracy protection for CD-ROM and DVD-ROM type disks.

Career Highlights

Throughout his career, Duhamel has focused on developing technologies that enhance the security of digital media. His patent reflects his commitment to creating solutions that protect intellectual property in the digital age.

Collaborations

Duhamel has worked alongside notable colleagues such as François-Xavier Pirot and Marc Des Rieux. Their collaborative efforts have contributed to advancements in optical disk technology and protection processes.

Conclusion

Jean-Louis Duhamel's contributions to the field of optical disk technology and his innovative patent for copy protection demonstrate his significant role in the industry. His work continues to influence the way digital media is protected against piracy.