Kazumasu Tsutsumi

Title: Kazumasu Tsutsumi: Innovator in Electronic Volume Control and Magnetic Recording Technologies

Introduction

Kazumasu Tsutsumi is a notable inventor based in Hamamatsu, Japan. He has made significant contributions to the fields of electronic volume control and magnetic recording technologies. With a total of 6 patents to his name, Tsutsumi's innovations have had a lasting impact on the industry.

Latest Patents

One of Tsutsumi's latest patents is a display control apparatus designed for displaying gain setting values in predetermined color hues. This invention involves an electronic volume control unit that adjusts the gain of an input musical signal, outputting a gain-adjusted signal to an amplifier. The CPU plays a crucial role by supplying the electronic volume control unit with a sound volume setting level, which corresponds to the output of a rotary encoder. Additionally, the CPU generates a hue control signal that changes the displaying hue of a three-color light-emitting diode based on the sound volume setting level. As the sound volume setting level changes from zero to the upper limit, the hue transitions in a stepwise manner between purple and red hues.

Another significant patent by Tsutsumi is for a magnetic recording and/or reproducing apparatus that utilizes a tape cassette. This apparatus features a pair of tape loading posts that are moved by drive gears to draw a portion of magnetic tape out of the cassette. The design includes lost-motion mechanisms that prevent subsequent angular movements of the drive gears from affecting the tape loading posts. This innovative approach ensures efficient tape loading and enhances the overall functionality of the device.

Career Highlights

Throughout his career, Kazumasu Tsutsumi has worked with prominent companies such as Yamaha Corporation and Nippon Gakki Seizo Kabushiki Kaisha. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in the audio and recording sectors.

Collaborations

Tsutsumi has collaborated with notable coworkers, including Shinji Ohba and Hajime Asahira. These partnerships have fostered a creative environment that has led to the development of innovative solutions in their respective fields.

Conclusion

Kazumasu Tsutsumi's contributions to electronic volume control and magnetic recording technologies highlight his role as a significant inventor. His patents reflect a commitment to innovation and excellence in engineering. Through his work, Tsutsumi continues to influence the industry