This inventor holds 14 USPTO granted patents. Top assignee: Ricoh Company, Ltd.. Active years: 1996-2005.
Company Filing History:
Years Active: 1996-2005
Title: Hisao Watanabe: Innovator in Optical Disc Technology.
Introduction
Hisao Watanabe is a prominent inventor known for his contributions to optical disc technology. He is based in Sagamihara, Japan, and has been instrumental in developing innovations that enhance data storage and retrieval processes. With a total of 14 patents to his name, Watanabe has made significant strides in the field of optical media.
Latest Patents
Watanabe's latest patents include the CLV optical disc, CLV optical disc format, and an optical disc medium recording and reproducing apparatus. The CLV optical disc is designed to record information with a constant linear velocity. In this innovative design, multiple lines of specified tracks exist within a predetermined data area. The railroad length of these tracks is an integer multiple of the length of a sector. The sector length on the specified tracks is calculated as 2×&pgr;×N times the track pitch, where N is a positive integer. The head positions of these specified tracks are aligned along a predetermined radius line at equal intervals. Fixed-length track marks are strategically arranged at equal physical length intervals along the spiral information track. The track position information is obtained by detecting the track marks of both the current and adjacent tracks. The CLV optical disc medium recording and reproducing apparatus can perform seeking operations using a CPU and other relevant units, independent of the disc revolution control. Additionally, the CLV drive ordering pulse creation method can be realized through the spindle rotation and slider movement ordering pulse trains.
Career Highlights
Watanabe is currently associated with Ricoh Company, Ltd., where he continues to innovate in optical disc technology. His work has significantly impacted the efficiency and effectiveness of data storage solutions.
Collaborations
Watanabe has collaborated with notable colleagues, including Masatoshi Saito and Tooru Maruyama, contributing to advancements in their shared field of expertise.
Conclusion
Hisao Watanabe's contributions to optical disc technology have established him as a key figure in the industry. His innovative patents and ongoing work at Ricoh Company, Ltd. continue to shape the future of data storage solutions.