Company Filing History:
Years Active: 1998-2000
Title: **Masayuki Ukawa: Innovator in Analog-to-Digital Converters**
Introduction
Masayuki Ukawa is a notable inventor based in Sagamihara, Japan, with a specific focus on innovations in the field of analog-to-digital converters. He holds two patents that showcase his contributions to improving the efficiency and performance of electronic devices.
Latest Patents
Ukawa's latest patents include the following innovations:
1. **Analog-to-Digital Converter Having Offset Removing Function**: This invention addresses the challenge of offset variations during operation in delta-sigma type analog-to-digital converters. By incorporating an offset removal feature, the invention enhances the speed at which a stable value is generated after the converter is powered on. It utilizes a high pass filter with a variable filter coefficient that can change dynamically during operation, enabling adjustments to the time constant of the filter based on real-time conditions.
2. **DC Dither Circuitry and Method for Delta-Sigma Modulator**: This patent focuses on improving the sound quality of delta-sigma analog-to-digital converters. It effectively shifts a characteristic tone out of the audible pass band without compromising the dynamic range or signal-to-noise ratio. The invention utilizes offset voltage measurements from the digital-to-analog converter to determine whether to apply a dither signal based on the amplitude of the measured offset voltage.
Career Highlights
Masayuki Ukawa is currently employed at Burr-Brown Corporation, where he contributes his expertise in the development of advanced electronic components. His work is recognized for pushing the boundaries of technology in analog-digital conversion.
Collaborations
Throughout his career, Ukawa has collaborated with talented coworkers such as Hideki Kanayama and Shigetoshi Nakao. Their combined efforts have fostered a creative and innovative environment, leading to significant advancements in their field.
Conclusion
Masayuki Ukawa's contributions to the realm of analog-to-digital technology have marked him as an influential inventor. With his innovative patents and collaborative spirit, Ukawa continues to impact the development of advanced electronic systems, paving the way for future technological advancements.