Location History:
- Katsuta, JP (1987)
- Yokohama, JP (1988 - 2013)
Company Filing History:
Years Active: 1987-2013
Title: The Innovations of Koji Kaniwa
Introduction
Koji Kaniwa is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of optical disc technology, holding a total of four patents. His work focuses on improving the functionality and efficiency of optical disc devices.
Latest Patents
Kaniwa's latest patents include an optical disc device and a tracking servo control circuit. This invention addresses the need to cancel lens shift caused by electric offsets in tracking actuator driving circuits. The tracking servo control circuit features two operation modes: one for setting the output current of the tracking actuator driving circuit to generally zero, and another for supplying a predetermined potential to the input. By acquiring the average potential of a push-pull signal detected in the first operation mode, Kaniwa's invention allows for precise movement of the object lens in both radial directions. This is achieved by changing the potential supplied in the second mode, which helps establish a correlative relationship between the average potential of the push-pull signal and the lens movement amount. Additionally, he has developed an optical disc apparatus and a back-off control method for the objective lens, which enhances the performance of optical disc reading and writing processes.
Career Highlights
Throughout his career, Koji Kaniwa has worked with prominent companies such as Hitachi, Ltd. and Hitachi-LG Data Storage, Inc. His experience in these organizations has allowed him to refine his skills and contribute to advancements in optical disc technology.
Collaborations
Kaniwa has collaborated with notable colleagues, including Yoshizumi Watatani and Shigeyuki Itoh. Their combined expertise has fostered innovation in their respective fields.
Conclusion
Koji Kaniwa's contributions to optical disc technology through his patents and collaborations highlight his role as a significant inventor in this domain. His work continues to influence advancements in the industry.