Hitoshi Yanagihara

Title: Hitoshi Yanagihara: Innovator in Surface Acoustic Wave Devices and Optical Disk Systems

Introduction

Hitoshi Yanagihara is a prominent inventor based in Kamakura, Japan. He holds a total of 7 patents that showcase his contributions to technology, particularly in the fields of surface acoustic wave devices and optical disk systems. His innovative work has significantly impacted the electronics industry.

Latest Patents

One of Yanagihara's notable patents is a surface acoustic wave device designed for use as a filter in television receiver sets. This device effectively reduces reflection waves generated from the outermost electrodes of input and output interdigital transducers, thereby improving various filter characteristics. The device features a piezoelectric substrate with input and output interdigital transducers, along with dummy electrodes that enhance performance.

Another significant patent is for a video optical disk system that is compatible with both read-only and writable formats. This system allows users to record and reproduce information in the same format as read-only optical disks, such as LaserDiscs (LD). It employs a writable optical disk with a high C/N ratio and utilizes common components in the player unit to ensure compatibility and effective reproduction of both disk types.

Career Highlights

Hitoshi Yanagihara has worked with notable companies, including Hitachi, Ltd. and Hitachi Media Electronics Co., Ltd. His experience in these organizations has contributed to his expertise in developing advanced electronic devices and systems.

Collaborations

Throughout his career, Yanagihara has collaborated with esteemed colleagues such as Nobuhiro Tokushuku and Katashi Hazama. These partnerships have fostered innovation and the exchange of ideas in the field of technology.

Conclusion

Hitoshi Yanagihara's contributions to surface acoustic wave devices and optical disk systems highlight his role as a significant inventor in the technology sector. His patents reflect a commitment to enhancing electronic devices and improving user experiences.