Christian Wirz

Title: Christian Wirz: Innovator in Security Module Technology

Introduction

Christian Wirz is a notable inventor based in Lausanne, Switzerland. He has made significant contributions to the field of security modules, particularly in the context of access control for multimedia units. With a total of 3 patents to his name, Wirz has demonstrated a commitment to enhancing user experience and security in digital environments.

Latest Patents

One of his latest patents is a method for evaluating user's rights stored in a security module. The aim of this invention is to reduce the switching time from one reception channel to another. This reduction is particularly noticeable when a high number of different rights are stored in a security module of a multimedia unit or decoder. When a user selects a service from an electronic programs guide, an access control module explores a stored service information table to extract the access condition associated with the service. This access condition helps determine an index in a rights table, which the access control module uses to communicate with the security module, allowing for quick access to the necessary rights.

Another significant patent by Wirz is a method for deactivating and reactivating security modules. This invention is particularly aimed at access control of conditional access data. The method involves sending management messages containing executable code to the security module, which can then execute this code to manage the values stored in its registers. This process allows for both the deactivation and subsequent reactivation of security modules, enhancing their functionality and security.

Career Highlights

Christian Wirz is currently employed at Nagravision S.A., a company known for its innovative solutions in digital security and content protection. His work at Nagravision has allowed him to further develop his expertise in security technologies and contribute to the advancement of the industry.

Collaborations

Throughout his career, Wirz has collaborated with notable colleagues, including Olivier Brique and Patrick Hauert. These collaborations have fostered an environment of innovation and creativity, leading to the development of cutting-edge technologies in the field of security modules.

Conclusion

Christian Wirz is a prominent figure in the realm of security module technology, with a focus on improving user access and security. His innovative patents and contributions to Nagravision S.A. highlight his dedication to advancing the field. His work continues to influence the way security modules operate in multimedia environments.