Company Filing History:
Years Active: 2001-2007
Title: Haruhiko Otsuka: Innovator in Circuit Design
Introduction
Haruhiko Otsuka, an accomplished inventor based in Tokyo, Japan, has made significant contributions to the field of circuit design, holding a total of three patents. His innovations focus on reducing noise and improving performance in electronic circuits, showcasing his expertise in the realm of integrated circuit technology.
Latest Patents
Otsuka's latest patents revolve around two major inventions. The first is a "Charge Pump Circuit Reducing Noise and Charge Error," which enhances the jitter characteristics and spectrum features of a Phase-Locked Loop (PLL) circuit. By employing multiple P-channel and N-channel MOS transistors along with current sources, this innovative design significantly shortens the time required for a PLL circuit to achieve lock status. His second patent pertains to a "Quartz Oscillation Circuit and Quartz Oscillation Integrated Circuit Device," which aims to reduce current flowing through a quartz oscillator. This design employs strategically placed resistors to minimize the quartz current while obtaining the necessary negative resistance, ensuring efficient operation.
Career Highlights
Throughout his career, Haruhiko Otsuka has worked for esteemed companies such as Nippon Precision Circuits Inc. and Seiko NPC Corporation. His work in these organizations has laid a strong foundation for his contributions to circuit design, particularly in the fields of noise reduction and energy efficiency.
Collaborations
Otsuka has collaborated with notable colleagues in his field, including Eiichi Hasegawa and Hiroshi Kawago. These partnerships have further enhanced his work, leading to impressive advancements in circuit technology through shared insights and expertise.
Conclusion
In summary, Haruhiko Otsuka stands out as an influential inventor whose work has made a meaningful impact on electronic circuit design. His focus on noise reduction and efficiency continues to inspire innovations, setting the stage for future developments in this critical area of technology.