This inventor holds 3 USPTO granted patents. Top assignee: Rohm Co., Ltd.. Active years: 2003-2008.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2003-2008
Title: Shigeji Ohama: Innovator in Audio Technology
Introduction
Shigeji Ohama is a notable inventor based in Kyoto, Japan. He has made significant contributions to the field of audio technology, holding a total of 3 patents. His work focuses on enhancing sound quality and performance in audio systems.
Latest Patents
Ohama's latest patents include an audio power amplifier IC and an audio system designed to suppress degradation in sound quality caused by the frequency of a reference clock. This innovative audio power amplifier IC features a clock generation circuit that produces an internal clock, a clock terminal for outputting or receiving an external clock, and a clock selection circuit that chooses between the internal and external clocks as a reference. Additionally, it includes a first audio signal input terminal and a first digital power amplifier circuit that performs pulse modulation on the audio signal based on the reference clock.
Another significant patent is the bass compensation device, which comprises a high-frequency removing circuit, an absolute value circuit for full-wave rectification, a band limit circuit for selectively passing a predetermined frequency range, and an amplifier for enhancing the output signal. This design allows for effective bass compensation while maintaining excellent distortion-factor and transient properties.
Career Highlights
Shigeji Ohama is currently employed at Rohm Co., Ltd., where he continues to innovate in audio technology. His work has had a profound impact on the development of high-quality audio systems.
Collaborations
Ohama has collaborated with notable coworkers such as Hiroyuki Saito and Satoshi Oishi, contributing to advancements in audio technology through teamwork and shared expertise.
Conclusion
Shigeji Ohama's contributions to audio technology through his patents demonstrate his commitment to improving sound quality and performance. His innovative designs continue to influence the industry and enhance the listening experience for users worldwide.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile