Makoto Horiyama

Title: Makoto Horiyama: Innovator in Optical Disk Technology

Introduction

Makoto Horiyama is a prominent inventor based in Nara, Japan. He has made significant contributions to the field of optical disk technology, holding a total of 5 patents. His work focuses on improving the efficiency and functionality of optical disk apparatuses.

Latest Patents

One of his latest patents involves an optical disk apparatus that enhances the detection of shift amounts of an objective lens using a tracking error signal and an RF signal. This innovation addresses the limitations of conventional optical disk apparatuses, which struggle with areas lacking RF signal recordings and incur higher costs. The new design includes a shift signal detecting portion that utilizes a push-pull signal generated during tracking error signal generation. This allows for more effective control of the objective lens actuator when the optical pickup is moved.

Another notable patent is related to an optical pickup device that projects a read beam onto an optical disc. This device incorporates a liquid crystal panel to correct spherical aberration caused by irregular thickness in the optical disc's transparent substrate. The control circuit in this invention enables quick and accurate detection of the necessary spherical aberration corrections, enhancing the overall performance of the optical pickup.

Career Highlights

Makoto Horiyama has been instrumental in advancing optical disk technology through his innovative patents. His work has not only improved existing technologies but has also paved the way for future developments in the field. He is associated with Sharp Corporation, a leading company in electronics and technology.

Collaborations

Throughout his career, Horiyama has collaborated with notable colleagues, including Takahiro Miyake and Nobuo Ogata. Their combined expertise has contributed to the successful development of various optical technologies.

Conclusion

Makoto Horiyama's contributions to optical disk technology exemplify his innovative spirit and dedication to advancing the field. His patents reflect a commitment to solving complex challenges in optical systems, making him a significant figure in the industry.