Masato Sakamoto

Title: Masato Sakamoto: Innovator in Optical Disc Technology

Introduction

Masato Sakamoto is a notable inventor based in Kawagoe, Japan. He has made significant contributions to the field of optical disc technology, holding a total of 6 patents. His work has advanced the way information is reproduced and recorded on optical discs.

Latest Patents

Sakamoto's latest patents include an innovative optical disc player that features a carriage control system relying on a multiplied periodic signal and a tracking error signal. This technology utilizes a pickup to detect a target track on the disc through an optical beam. In the carriage servo control, the movement of the pickup is servo-controlled in the radial direction of the optical disc. A tracking error signal is produced by a preamplifier, and a pulse signal is generated with a period set to a constant amount corresponding to the accuracy of the pickup's movement. Based on these signals, a carriage control signal is produced to move the pickup effectively.

Another significant patent involves a carriage servo control system and an information-recording medium where the program for carriage servo control is recorded. This system also employs a pickup to detect a target track on the optical disc. The movement of the pickup is again servo-controlled, with a tracking error signal produced by a preamplifier. The duty ratio of the pulse signal is adjusted based on the characteristics of the error signal, leading to a modified pulse signal that is multiplied by the tracking error signal to create the carriage control signal.

Career Highlights

Throughout his career, Masato Sakamoto has worked with prominent companies, including Pioneer Corporation. His expertise in optical disc technology has positioned him as a key figure in the industry.

Collaborations

Sakamoto has collaborated with notable coworkers such as Atsushi Kusaka and Katsunori Tamamura, contributing to the advancement of optical disc technology through teamwork and shared expertise.

Conclusion

Masato Sakamoto's innovative work in optical disc technology has led to significant advancements in the field. His patents reflect a deep understanding of the mechanics involved in optical disc players, showcasing his contributions to modern technology.