This inventor holds 4 USPTO granted patents. Top assignee: Sharp Kabushiki Kaisha Corporation. Active years: 1992-2006.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Hiroshima, JP (1993)
- Higashi-hiroshima, JP (1992 - 2006)
Company Filing History:
Years Active: 1992-2006
Title: Hirotoshi Yamamoto: Innovator in Digital Signal Processing
Introduction
Hirotoshi Yamamoto is a prominent inventor based in Higashihiroshima, Japan. He has made significant contributions to the field of digital signal processing, holding a total of 4 patents. His work focuses on enhancing audio and video signal reproduction technologies.
Latest Patents
Yamamoto's latest patents include a digital signal processing device and an audio signal reproduction device. The audio signal reproduction device features a seventh-order delta-sigma modulation circuit that receives a PCM signal and performs delta-sigma modulation. It also includes a PWM circuit that generates a one-bit digital signal, a switching amplifier that converts this signal into an analog format, and a low-pass filter that removes high-frequency components. This innovative configuration allows for significant size and weight reduction in audio devices.
Another notable patent is for a magnetic tape recording and reproducing apparatus designed for digital signals. This apparatus effectively records and reproduces video signals of the PAL system as still pictures. It utilizes memory storage during recording to ensure that still picture data is accurately read out during reproduction, allowing for improved quality and efficiency.
Career Highlights
Hirotoshi Yamamoto is currently employed at Sharp Corporation, where he continues to develop cutting-edge technologies in digital signal processing. His work has been instrumental in advancing the capabilities of audio and video equipment.
Collaborations
Yamamoto has collaborated with notable colleagues, including Tsunehiko Hongoh and Yukihiko Haikawa. Their combined expertise has contributed to the success of various projects within the company.
Conclusion
Hirotoshi Yamamoto's innovative contributions to digital signal processing have made a lasting impact on the industry. His patents reflect a commitment to improving audio and video technologies, showcasing his role as a leading inventor in this field.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile