Michiaki Kumaoka

Title: Michiaki Kumaoka: Innovator in Radio Technology

Introduction

Michiaki Kumaoka is a notable inventor based in Shizuoka, Japan. He has made significant contributions to the field of radio technology, holding a total of 3 patents. His innovative work focuses on enhancing the functionality and efficiency of radio receivers.

Latest Patents

One of Kumaoka's latest patents is an "Automatic Frequency Scanning Radio Receiver." This invention features a phase-locked loop frequency synthesizer that serves as a local oscillator circuit. It includes a scan clock counter circuit that produces a program input signal, allowing the frequency synthesizer to automatically change its output frequency in steps. This enables the radio receiver to scan channels within a desired frequency band seamlessly. Additionally, a detection circuit is integrated to identify when the receiver is tuned to a broadcast signal above a predetermined input level, interrupting the automatic channel scanning when necessary.

Another significant patent is related to a "Muting Arrangement of a Radio Receiver with a Phase-Locked Loop." In this design, a detector monitors the in-lock or out-of-lock state of the phase-locked loop. When the loop is out of lock, a mute gate in the signal transmission path operates to mute the audio output. An indicator may also be included to visually show when the phase-locked loop is in lock.

Career Highlights

Kumaoka is currently employed at Nippon Gakki Seizo Kabushiki Kaisha, a company known for its advancements in musical instruments and electronic devices. His work has contributed to the development of innovative radio technologies that enhance user experience and functionality.

Collaborations

Throughout his career, Kumaoka has collaborated with talented individuals such as Sinzi Aosima and Takashi Yamada. These partnerships have fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Michiaki Kumaoka is a distinguished inventor whose work in radio technology has led to several important patents. His contributions continue to influence the field, showcasing the importance of innovation in enhancing communication technologies.