Location History:
- Okazaki, JP (1994 - 1997)
- Kyoto, JP (1988 - 2010)
Company Filing History:
21 out of 1,625 
2 out of 6,008 
Years Active: 1988-2010
Title: Innovations and Contributions of Makoto Shimada
Introduction
Makoto Shimada, based in Kyoto, Japan, is a distinguished inventor with an impressive portfolio of 23 patents. His work primarily focuses on advancements in motor drive circuits and image sensing apparatuses, contributing significantly to the fields of electronics and automation. Through innovative solutions, Shimada has enhanced the functionality and efficiency of various systems, showcasing his commitment to technological growth.
Latest Patents
Shimada's latest patents reflect his dedication to improving electronic systems. One notable invention is a "Motor Drive Circuit" designed to minimize circuit occupation area and IC size. This innovation employs a polarity inversion data generating circuit using the higher-order bits of an address counter as polarity inversion instruction data. The process allows for two cyclic memory accesses to read a half period of waveform data twice, thus simplifying the generation of sinusoidal waveforms.
Another significant invention is an "Image Sensing Apparatus" that utilizes a constant-voltage driven stepping motor. This apparatus features a PWM waveform generation part responsible for producing pulse signals for switching devices. The PWM waveform determination section adapts the duty ratio in accordance with the stepping motor's rotation speed and output torque. This ensures that higher rotational speeds correlate with a wider duty ratio range, optimizing the performance of the image sensing system.
Career Highlights
Throughout his extensive career, Makoto Shimada has made substantial contributions to various technological advancements. He has worked with reputable companies such as Mitsubishi Motors Corporation and Rohm Co., Ltd., where he honed his skills and knowledge in electronics and motor systems. His experience in these organizations has played a pivotal role in shaping his innovative approach to problem-solving and design.
Collaborations
Shimada's work has often involved collaboration with other talented professionals in the field. Notable colleagues include Kazuhide Togai and Yoshiaki Danno, who have contributed to various projects and innovations alongside Shimada. Such partnerships have been instrumental in fostering an environment of creativity and collaboration, leading to outstanding results in their respective fields.
Conclusion
Makoto Shimada's contributions to the world of technology through his patents and innovations continue to resonate in the electronics sector. His inventive spirit and commitment to improving motor-driven systems and image sensing technology underline the importance of collaboration and creativity in advancing modern solutions. As technology evolves, Shimada's work serves as an inspiring example of how inventors can impact industries and drive progress.