Company Filing History:
Years Active: 1988-1996
Title: Hisakazu Kato: Innovator in High Definition Television Technology
Introduction
Hisakazu Kato is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of high definition television technology. With a total of 3 patents to his name, Kato's work has had a lasting impact on how we experience video signals today.
Latest Patents
Kato's latest patents include a "Receiver and channel compatible encoding/decoding system for high definition video signals." This innovative system combines high-resolution vertical and horizontal components of a high-definition video signal with a standard broadcast system video signal, such as the NTSC system. The high-frequency horizontal resolution components are sampled and used to modulate a first sub-carrier signal, which is frequency interleaved onto the standard broadcast signal. Vertical high-resolution components are time-compressed and multiplexed onto the top and bottom portions of the standard broadcast signal. This modified broadcast signal can be decoded by standard receivers to display a standard resolution video image, while specialized receivers can demultiplex and demodulate the high-resolution components to generate a high-definition video image.
Another significant patent is the "Signal transmission system for high definition television." This system can handle a second television signal that is superior in quality to a first television signal, such as an NTSC television signal. The transmitting end transmits a first television signal, including video and audio signals, through a main transmission line, as well as a third television signal that includes high-definition components obtained as the difference between the second and first television signals through an auxiliary transmission line. The receiving end synthesizes these signals to produce the second television signal.
Career Highlights
Throughout his career, Kato has worked with prominent companies such as Nippon Hoso Kyokai and Nippon Kogaku K.K. His experience in these organizations has allowed him to develop and refine his innovative ideas in television technology.
Collaborations
Kato has collaborated with notable individuals in the field, including Yasuaki Kanatsugu and Taiichiro Kurita. These collaborations have contributed to the advancement of technology in high definition television.
Conclusion
Hisakazu Kato's contributions to high definition television technology through his patents and collaborations have significantly influenced the industry. His innovative approaches continue to shape the way we consume visual media today.