Location History:
- Oyama, JP (1997)
- Kawasaki, JP (2005)
Company Filing History:
Years Active: 1997-2005
Title: Kazuhisa Kogure: Innovator in Optical Signal Technology
Introduction
Kazuhisa Kogure is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of optical signal technology, holding a total of 2 patents. His work primarily focuses on enhancing the efficiency and performance of optical communication systems.
Latest Patents
Kogure's latest patents include a clock regeneration circuit and an optical signal receiver utilizing the same technology. The clock regeneration circuit features a phase-locked loop (PLL) circuit that incorporates a voltage control oscillator. It also includes a clock extraction circuit with a band-pass filter and a harmonic component of a dividing signal from the oscillation frequency signal. This innovative design allows for the output of an oscillation frequency from the voltage control oscillator or a frequency signal obtained by dividing the oscillation frequency, based on the bit rate detected by the bit rate detection circuit.
Another notable patent is the equalizing amplifier and receiver, which equalizes an electric signal derived from a light signal received through an optical transmission path. This system employs an automatic gain control (AGC) circuit that generates complementary first and second signals from the electric signal, referring to a threshold voltage. An offset compensation circuit then generates a first difference signal based on the difference between these two signals, ensuring that the threshold voltage is adjusted to compensate for any offset in the AGC circuit.
Career Highlights
Kazuhisa Kogure is currently associated with Fujitsu Corporation, where he continues to innovate in the field of optical technologies. His work has been instrumental in advancing the capabilities of optical communication systems, making them more efficient and reliable.
Collaborations
Kogure has collaborated with notable colleagues such as Hirokazu Osada and Yasuhiro Tanaka. Their combined expertise has contributed to the development of cutting-edge technologies in optical signal processing.
Conclusion
Kazuhisa Kogure's contributions to optical signal technology through his patents and work at Fujitsu Corporation highlight his role as a key innovator in the field. His advancements continue to shape the future of optical communication systems.