This inventor holds 4 USPTO granted patents and 9 published patent applications. Top assignee: Pioneer Corporation. Active years: 2012-2016.
Location History:
- Saitama, JP (2012)
- Kawasaki, JP (2015 - 2016)
Company Filing History:
Years Active: 2012-2016
Title: Innovations of Kensaku Obata in Active Vibration Noise Control
Introduction
Kensaku Obata is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of active vibration noise control, holding a total of 4 patents. His work focuses on developing devices and methods that effectively manage and reduce unwanted vibration noise.
Latest Patents
Obata's latest patents include an active vibration noise control device, an active vibration noise control method, and an active vibration noise control program. The active vibration noise control device is designed to obtain error signals that correspond to cancellation errors between vibration noise and control sounds generated by multiple speakers. This device actively controls vibration noise by utilizing microphones to capture these error signals. A basic signal generating unit creates a basic signal based on the frequency of the vibration noise. An adaptive notch filter unit then generates control signals for each speaker by applying a filter coefficient to the basic signal. Additionally, a reference signal generating unit produces a reference signal from the basic signal, taking into account multiple transfer characteristics from the speakers to the microphones. The filter coefficient updating unit plays a crucial role in minimizing error signals by updating the filter coefficient. Finally, a controlling unit adjusts the amplitude of the control signals based on the similarity between the transfer characteristics and the characteristics of the vibration noise.
Career Highlights
Kensaku Obata is currently employed at Pioneer Corporation, where he continues to innovate in the field of noise control technology. His work has been instrumental in advancing methods for effectively cancelling out vibration noise through the use of multiple speakers.
Collaborations
Obata has collaborated with notable coworkers such as Yoshiki Ohta and Yoshitomo Imanishi, contributing to the development of advanced technologies in their field.
Conclusion
Kensaku Obata's contributions to active vibration noise control demonstrate his commitment to innovation and excellence in engineering. His patents reflect a deep understanding of the complexities involved in managing vibration noise, making him a significant figure in this area of technology.