Didier Leonard

Title: The Innovations of Didier Leonard

Introduction

Didier Leonard is an accomplished inventor based in Paris, France. He has made significant contributions to the field of electronic identification technologies. With a total of 2 patents, Leonard's work focuses on enhancing the efficiency and functionality of proximity identification devices.

Latest Patents

One of Didier Leonard's latest patents is a "Device for identification by proximity." This innovative reader identifies coded electronic badges without any contact, utilizing simple inductive coupling. The electrical supply for the badge is generated from a high-frequency voltage produced by the reader. The badge's code, composed of a sequence of bits at a much lower frequency, modulates an intermediate frequency voltage that controls an electronic switch, effectively short-circuiting a resonant circuit of the badge.

Another notable patent is related to "Coded objects identifiable by proximity and devices for changing the." This invention involves electronic badges that equip portable objects, such as plastified cards, which can be identified at a distance by suitable readers. These passive badges are powered exclusively from external sources through inductive coupling and are reprogrammable via specific channels. The circuitry for forming the binary coded identification signals includes a dead memory, a life memory or buffer, and a rapid reading and writing circuit that connects these memories and the reprogramming channels.

Career Highlights

Didier Leonard is associated with Societe Fontaine, where he continues to develop innovative solutions in electronic identification. His work has positioned him as a key figure in the advancement of proximity identification technologies.

Collaborations

Leonard has collaborated with notable individuals in his field, including Jacques Lewiner and Claude Hennion. Their combined expertise has contributed to the success of various projects and innovations.

Conclusion

Didier Leonard's contributions to electronic identification technologies demonstrate his commitment to innovation and advancement in the field. His patents reflect a deep understanding of the complexities involved in proximity identification, paving the way for future developments.