Katsumasa Hijikata

Title: **Katsumasa Hijikata: Innovator in Solid-State Imaging Technology**

Introduction

Katsumasa Hijikata, an accomplished inventor based in Osaka, Japan, has made significant contributions to the field of imaging technology. With a total of six patents to his name, his innovative work focuses on solid-state imaging devices and variable gain amplifiers, paving the way for advancements in electronic imaging.

Latest Patents

Among Katsumasa Hijikata's latest patents is a **solid-state imaging device and imaging apparatus**. This invention features a pixel unit, consisting of rows and columns of pixels that generate signals based on the incident light. It incorporates a column analog-to-digital converter (ADC) for each pixel column, performing digital conversions on the generated pixel signals. The device includes a timing control unit to produce control signals and a logic swing and delay adjusting circuit that can either reduce the amplitude or delay these signals for optimal performance.

Another notable patent is the **variable gain amplifier**. This amplifier is designed with a direct current (DC) blocking capacitor and features a variable amplifier unit that adjusts its output based on the effective transistor size. Additionally, it includes components such as a load impedance unit, a bias resistor, and a variable bias voltage generator to enhance its functionality, thereby allowing for dynamic control over the amplification process based on transistor size.

Career Highlights

Katsumasa Hijikata's career includes significant positions at major companies like Panasonic Corporation and Panasonic Intellectual Property Management Co., Ltd. His work, especially focused on imaging technologies, has earned him recognition and respect in the field of electronics and patents.

Collaborations

During his career, Katsumasa had the privilege of collaborating with esteemed professionals such as Joji Hayashi and Takashi Morie. These collaborations have contributed to the enhancement of his work and innovation efforts, driving forward the potential of imaging and amplification technologies.

Conclusion

Katsumasa Hijikata's inventive spirit and technical expertise have led to groundbreaking advancements in solid-state imaging and variable gain amplification. His patents reflect a commitment to innovation that continues to influence the industry, making him a prominent figure in the world of technology and invention.