Location History:
- Aichi, JP (1986)
- Toyota, JP (1986)
Company Filing History:
2 out of 36,771 
1 out of 902 
Years Active: 1986
Title: Kan Otsuka: Innovator in Analog-to-Digital Conversion and Air-Fuel Ratio Control
Introduction
Kan Otsuka is a notable inventor based in Aichi, Japan. He has made significant contributions to the fields of analog-to-digital conversion and internal combustion engine control. With a total of 2 patents, Otsuka's work has had a lasting impact on technology and engineering.
Latest Patents
Otsuka's latest patents include a method and apparatus for analog-to-digital conversion. This invention involves selecting one analog signal from multiple signals using a multiplexer. A capacitor is charged through a switch controlled by a start signal. The capacitor then discharges with a constant current, and a level discriminating signal is generated when the voltage falls below a predetermined level. This process allows for accurate digital value calculations based on the time period from the switch's opening to the generation of the level discriminating signal.
Another significant patent is the air-fuel ratio control method and apparatus for internal combustion engines. This invention enables closed-loop air-fuel ratio control by detecting the concentration of a specific component in exhaust gas. It calculates a correction factor for the air-fuel ratio and adjusts the fuel amount accordingly, even during engine warm-up. The control operation is paused during acceleration by fixing the correction factor to a predetermined value.
Career Highlights
Throughout his career, Kan Otsuka has worked with prominent companies such as Toyota Motor Corporation and Fujitsu Ten Limited. His experience in these organizations has allowed him to develop and refine his innovative ideas.
Collaborations
Otsuka has collaborated with notable coworkers, including Susumu Nogami and Yukio Suzuki. Their combined expertise has contributed to the success of various projects and innovations.
Conclusion
Kan Otsuka's contributions to technology through his patents in analog-to-digital conversion and air-fuel ratio control demonstrate his innovative spirit and technical expertise. His work continues to influence advancements in engineering and technology.