Location History:
- Sibuya-ku, Tokyo JP (2002)
- Tokyo, JP (2003 - 2004)
Company Filing History:
6 out of 301 
2 out of 372 
2 out of 832,843 Years Active: 2002-2004
Title: Hisakazu Katoh: Innovator in Digital Communication Technologies
Introduction
Hisakazu Katoh is a prominent inventor based in Tokyo, Japan, known for his significant contributions to digital communication technologies. With a total of 10 patents to his name, Katoh has developed innovative solutions that enhance the efficiency and reliability of digital data transmission.
Latest Patents
Among his latest inventions is a digital demodulator designed to eliminate the need for an absolute phasing circuit. This device utilizes a known-pattern BPSK signal generating circuit that synchronizes with the received digital modulated wave. It features a carrier-reproducing phase error detecting circuit that employs a phase error table, ensuring accurate phase alignment during demodulation. Another notable patent is his digital data receiver, which effectively demodulates time division multiplex signals containing multiple digital data signals. This receiver can detect and replace incorrectly received signals with null packet signals, maintaining the integrity of the remaining data.
Career Highlights
Throughout his career, Katoh has worked with notable companies such as Kenwood Corporation and Nippon Hoso Kyokai. His experience in these organizations has allowed him to refine his skills and contribute to advancements in digital communication.
Collaborations
Some of his notable coworkers include Akinori Hashimoto and Tomohiro Saito, who have collaborated with him on various projects, further enhancing the impact of his inventions.
Conclusion
Hisakazu Katoh's innovative work in digital communication technologies has made a lasting impact on the field. His patents reflect a commitment to improving data transmission methods, showcasing his expertise and dedication to innovation.