Henrique Uemura Okada

Title: Innovations of Henrique Uemura Okada

Introduction

Henrique Uemura Okada is a notable inventor based in Marília, Brazil. He has made significant contributions to the field of RFID technology, holding 3 patents that showcase his innovative approach to secure data access and communication.

Latest Patents

One of his latest patents involves embedding protected memory access into an RFID authentication process based on a challenge-response mechanism. This invention includes a RFID tag, reader, and protocol that allow a protected read operation in a two-step tag authentication using cipher-block cryptography. The challenge-response mechanism utilizes a shared secret symmetric key for tag authentication, which includes a challenge and information to read data from the tag's memory. The tag's response to the challenge includes both the response to the reader's challenge and the data from its memory. Additionally, the method embeds a protected write operation in a four-step reader authentication process, also utilizing cipher-block cryptography. This protocol allows for a challenge-response mechanism for reader authentication, including a challenge and information to write data to the tag's memory. The reader's response includes a response to the tag's challenge and data for writing to the tag's memory. Authenticated read and write data can be in plaintext, message authentication code (MAC)-protected, encrypted, or both encrypted and MAC protected.

Another significant patent by Okada is related to the design of a RFID tag and its antenna. This RFID tag includes an antenna that consists of a first dipole, a first feeder portion, a second dipole, and a second feeder portion. The first feeder portion is coupled to the first dipole at two locations a feeder length distance apart, while the second feeder portion is coupled to the second dipole at two locations the same distance apart. The impedance at the antenna terminal is determined, at least in part, by the feeder length distance. The design features a symmetrical antenna about both a major and a minor axis of the rectangle formed by the dipoles.

Career Highlights

Throughout his career, Okada has worked with esteemed organizations such as the Wernher Von Braun Advanced Research Center and the Advanced Research Center Wernher Von Braun. His work in these institutions has contributed to advancements in research and technology.

Collaborations

Okada has collaborated with notable individuals in his field, including Alexander Peter Sieh and Osmar Vieira Machado. These collaborations