This inventor holds 3 USPTO granted patents and 1 EPO patent. Top assignees: Jvc Kenwood Corporation, Victor Company of Japan, Limited, Other. Active years: 1990-2020.
Location History:
- Kanagawa, JP (2004)
- Yokohama, JP (1990 - 2020)
Company Filing History:
1 out of 1,447 
1 out of 2,887 
1 out of 834,350 Years Active: 1990-2020
Title: The Innovations of Toru Fujimoto
Introduction
Toru Fujimoto is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of technology, particularly in signal processing and semiconductor laser control. With a total of 3 patents to his name, Fujimoto's work has had a lasting impact on various applications.
Latest Patents
Fujimoto's latest patents include a receiver and reception method for receiving FSK signals. This invention involves a mixer connected to a signal generator and an antenna, which outputs a signal at an intermediate frequency. A PLL demodulator processes this signal through PLL demodulation, while an amplifier enhances the output from the demodulator. Additionally, a detector measures the shift occurring in the PLL demodulator and the gain of the amplifier. An FSK demodulator then subjects the amplified signal to FSK demodulation. An AFC unit detects any frequency offset in the signal and adjusts the signal generator accordingly.
Another significant patent by Fujimoto is a semiconductor laser control method and device. This invention addresses the issue of playback signal amplitude drops when data is incrementally written to optical discs like DVD-R or DVD-RW. The feed-forward control quickly stabilizes the semiconductor laser recording power at the target level immediately after recording begins. Feedback control maintains the laser power at the desired level throughout the recording process, even when temperature variations affect the semiconductor laser.
Career Highlights
Throughout his career, Toru Fujimoto has worked with various companies, including JVC Kenwood Corporation. His expertise in signal processing and laser technology has positioned him as a valuable asset in the industry.
Collaborations
Fujimoto has collaborated with notable colleagues such as Yasuhiro Ueki and Tomonori Ueno. Their combined efforts have contributed to advancements in their respective fields.
Conclusion
Toru Fujimoto's innovative patents and career achievements highlight his significant contributions to technology. His work continues to influence advancements in signal processing and semiconductor laser control.