Company Filing History:
Years Active: 1989-1992
Title: Tsuneyoshi Nagashita: Innovator in Disk Player Technology
Introduction
Tsuneyoshi Nagashita is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of disk player technology, holding 2 patents that enhance the functionality and efficiency of these devices. His work is primarily associated with Pioneer Electronic Corporation, where he has developed innovative methods for information reproduction and motor control.
Latest Patents
Nagashita's latest patents include a "Record Information Reproducing Method with Content Identifiers." This method improves the operation of disk players by allowing programs on the disk to be accessed sequentially from a directory stored in memory. The directory can be populated by inserting random numbers or scanning through the programs. Additionally, a playback position servo operates with a dead-zone in the drive voltage, enhancing the overall performance of the device.
Another significant patent is the "Pulse-Width Modulation Drive Circuit." This invention focuses on reducing losses in diodes that absorb reverse EMF in motors, particularly those used in compact disc players. By controlling the pulse widths of pulse signals, the design effectively eliminates diode losses, making it easier to implement in integrated circuit form.
Career Highlights
Throughout his career, Nagashita has demonstrated a commitment to innovation in audio technology. His work at Pioneer Electronic Corporation has positioned him as a key figure in the development of advanced disk player systems. His patents reflect a deep understanding of both hardware and software integration, which is crucial for modern electronic devices.
Collaborations
Nagashita has collaborated with notable colleagues such as Yoshihiko Watanabe and Isamu Nomura. Their combined expertise has contributed to the successful development of cutting-edge technologies in the audio industry.
Conclusion
Tsuneyoshi Nagashita's contributions to disk player technology through his patents have significantly advanced the field. His innovative methods and designs continue to influence the way we experience audio playback today.