Keiji Morijiri

Title: Keiji Morijiri: Innovator in Tuning Circuits

Introduction

Keiji Morijiri is a notable inventor based in Gunma, Japan. He has made significant contributions to the field of electronics, particularly in the development of tuning circuits. With a total of 2 patents, Morijiri's work has advanced the technology used in radio communication apparatus.

Latest Patents

Morijiri's latest patents include a tuning circuit with an amplitude attenuation function and a tuning circuit having an amplitude-varying function. The first patent discloses a tuning circuit that comprises a coil and a capacitor, along with a resistance-adjustment circuit connected in parallel. This circuit changes the resistance of the tuning circuit when resonant, utilizing a series circuit of a resistor and a switching element. The switching element has an ON-resistance smaller than that of the resistor, allowing for the adjustment of resistance when the switching element is turned on or off. The second patent presents a tuning circuit that varies the amplitude of an output signal by adjusting the resistance at the time of resonance, enhancing the functionality of the circuit.

Career Highlights

Throughout his career, Morijiri has worked with prominent organizations such as Sanyo Electric Co., Ltd. and Tokyo University of Science. His experience in these institutions has contributed to his expertise in electronic innovations and patent development.

Collaborations

Some of Morijiri's notable coworkers include Hiroya Yamamoto and Masahiro Umewaka. Their collaboration has likely fostered an environment of innovation and creativity in their respective projects.

Conclusion

Keiji Morijiri's contributions to the field of tuning circuits exemplify his innovative spirit and dedication to advancing technology. His patents reflect a deep understanding of electronic systems and their applications in communication.