This inventor holds 3 USPTO granted patents and 1 EPO patent. Top assignee: Fujitsu Corporation. Active years: 2002-2011.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Sapporo, JP (2005)
- Kawasaki, JP (2002 - 2011)
Company Filing History:
Years Active: 2002-2011
Title: Shigeru Ohkawa: Innovator in Distortion Compensation Technology
Introduction
Shigeru Ohkawa is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of communication technology, particularly in distortion compensation. With a total of 3 patents to his name, Ohkawa continues to push the boundaries of innovation.
Latest Patents
Ohkawa's latest patents include a distortion compensating apparatus, a wireless communicating apparatus, and a distortion compensating method. The distortion compensating apparatus features several key units. An information measuring unit measures distortion and electric power components based on a radiation signal. A compensation coefficient calculating unit computes a compensation coefficient based on these components. The signal transmitting unit outputs a corrected signal as a transmission signal, while a signal converting unit transforms this signal into a high-frequency signal. An amplitude separating unit amplifies the high-frequency signal and separates a portion for feedback. The feeding-back unit processes this portion and outputs a feedback signal to the information measuring unit. Additionally, an electric power information extracting unit outputs part of the high-frequency signal as the radiation signal, extracting electric power information and directly sending it to the information measuring unit.
Another notable invention is the multicarrier amplifying device. This device includes a power detecting section that changes detection frequency according to the carrier frequency being measured. It detects the power level of each carrier, and a controlling section automatically adjusts the power level based on the detected levels. This innovation allows for the automatic setting of a transmission power level for one carrier without interrupting existing carriers.
Career Highlights
Shigeru Ohkawa is currently employed at Fujitsu Corporation, where he applies his expertise in communication technologies. His work has been instrumental in developing advanced solutions that enhance signal processing and transmission efficiency.
Collaborations
Ohkawa collaborates with talented coworkers, including Takumi Takayashiki and Takashi Yokoyama. Their combined efforts contribute to the innovative projects at Fujitsu Corporation.
Conclusion
Shigeru Ohkawa is a key figure in the field of distortion compensation technology. His inventions and contributions continue to shape the future of communication systems.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile