Shuji Ishikawa

Title: **Inventor Profile: Shuji Ishikawa**

Introduction

Shuji Ishikawa is a notable inventor based in Sagamihara, Japan. He has made significant contributions to the field of electrical engineering, specifically in the development of automatic frequency control circuits. As an inventor working for Sony Corporation, Ishikawa has leveraged his expertise to innovate solutions that impact various technology sectors.

Latest Patents

Shuji Ishikawa holds one patent titled "Automatic Frequency Control Circuit." This patent details an innovative circuit designed to enhance the stability of oscillating circuits while managing comparison signals. The core mechanism involves an oscillating circuit generating repetitive pulses coupled with a comparison signal generator that creates slope portions in response to these pulses. A phase comparison circuit then compares the generated comparison signals with synchronous signals to provide control signals that ensure precise operations within electronic devices. The inclusion of a limiting circuit further enhances the functionality by maintaining predetermined maximum and minimum levels for the comparison signals, effectively controlling the operation range of the automatic frequency control circuit.

Career Highlights

Ishikawa's career at Sony Corporation has been marked by his dedication to advancing technology through innovative solutions. His work on automatic frequency control circuits is a testament to his skill in both conception and practical application of engineering principles. Throughout his career, he has been recognized as a valuable asset to his team and the company as a whole.

Collaborations

In his pursuit of innovation, Ishikawa has collaborated with talented coworkers, including Hiroshi Sahara and Fumikazu Otsuka. Together, they have fostered a collaborative environment that encourages creativity and the sharing of ideas, leading to the development of groundbreaking technologies.

Conclusion

Shuji Ishikawa's contributions to the field of electrical engineering, particularly through his patent for an automatic frequency control circuit, underscore the importance of innovation in technology. His role at Sony Corporation, along with his collaborations with colleagues, exemplifies how teamwork and creative thinking can lead to significant advancements. As technology continues to evolve, inventors like Ishikawa remain at the forefront, driving progress and shaping the future.