This inventor holds 4 USPTO granted patents. Top assignee: Ricoh Company, Ltd.. Active years: 2004-2008.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Osaka, JP (2004 - 2006)
- Ohsaka-fu, JP (2007 - 2008)
Company Filing History:
Years Active: 2004-2008
Title: Ryohsuke Sugiyama: Innovator in Optical Disk Technology
Introduction
Ryohsuke Sugiyama is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of optical disk technology, holding a total of 4 patents. His work focuses on improving the efficiency and accuracy of optical disk recording systems.
Latest Patents
One of Sugiyama's latest patents is a method and apparatus for optical disk recording capable of reducing settling time and generating an accurate channel clock signal. This innovative optical disk recording apparatus includes a first comparator, a second comparator, a third comparator, a selection circuit, a control voltage generator, a voltage control oscillator, and a control circuit. The first comparator compares frequency-divided signals to output an error signal. The second and third comparators compare a signal pre-recorded on an optical disk and the frequency-divided signal to output an error signal and a frequency differential signal. The selection circuit selects any one of the error signals to output the signal selected. The control voltage generator generates a control voltage from the signal from the selection circuit. The voltage control oscillator generates and outputs the write reference clock signal having a frequency corresponding to the control voltage from the control voltage generator. The control circuit controls operations of the selection circuit according to the frequency differential signals.
Career Highlights
Sugiyama is currently employed at Ricoh Company, Ltd., where he continues to develop innovative solutions in optical disk technology. His work has been instrumental in advancing the capabilities of optical recording systems.
Collaborations
Some of his notable coworkers include Tsuji Masaaki and Masaaki Tsuji, who have collaborated with him on various projects within the company.
Conclusion
Ryohsuke Sugiyama's contributions to optical disk technology highlight his innovative spirit and dedication to improving recording systems. His patents reflect a commitment to enhancing the efficiency and accuracy of optical disk operations.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile