This inventor holds 3 USPTO granted patents. Top assignee: Denso Corporation. Active years: 2002-2008.
Company Filing History:
Years Active: 2002-2008
Title: Innovations by Yoshimitsu Fujii
Introduction
Yoshimitsu Fujii is a notable inventor based in Okazaki, Japan. He has made significant contributions to the field of vehicle communication systems. With a total of 3 patents, his work focuses on enhancing the reliability and security of electronic control units in vehicles.
Latest Patents
Fujii's latest patents include a communications system designed to enhance fail-safe performance in two-wire lines. This system utilizes five electronic control units (ECUs) that control vehicle devices using the CAN protocol. Each ECU is equipped with a resistor and a switch for activating the resistor. The first and fifth ECUs serve as terminating resistors for the two-wire communications line. In the event of a break in the line, the first ECU sends a test signal while the other ECUs, excluding the fifth, activate their switches from right to left. This process allows for the identification of the broken point, enabling communication to continue on the left side of the break.
Another significant patent by Fujii is a control information rewriting system. This system includes a rewriting device for vehicle ECUs and a control center. The control center stores a necessary function for the rewriting device to access the ECUs. During data communication via a telephone line network, the control center acquires ID information from the rewriting device and the telephone number of the call origin. If the association between the ID and telephone number matches a stored relationship, the control center verifies the legitimacy of the rewriting device. Only then does it transmit the function to enable the rewriting of control information for the ECUs.
Career Highlights
Fujii is currently employed at Denso Corporation, a leading company in automotive technology. His work at Denso has allowed him to focus on innovative solutions that improve vehicle communication systems.
Collaborations
Fujii collaborates with talented coworkers, including Takeshi Suganuma and Minoru Hozuka. Their combined expertise contributes to the advancement of technology in the automotive industry.
Conclusion
Yoshimitsu Fujii's contributions to vehicle communication systems demonstrate his commitment to innovation and safety in automotive technology. His patents reflect a deep understanding of electronic control systems and their critical role in modern vehicles.