Company Filing History:
Years Active: 1989-2003
Title: Naoki Shimosaka: Innovator in Time-Division Multiplexing
Introduction
Naoki Shimosaka is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of time-division multiplexing, with a total of 6 patents to his name. His work has been instrumental in advancing technologies that enhance signal processing and transmission.
Latest Patents
Shimosaka's latest patents include a method and apparatus for time-division multiplexing and demultiplexing. This innovation allows for the multiplexing of input signals along with a predetermined frame synchronization pattern signal, generating first time-division multiplexed signals. These signals are then further multiplexed to create a second time-division multiplexed signal. Upon receiving the time-division multiplexed signal from a transmission line, it is demultiplexed to produce a predetermined number of first time-division demultiplexed signals. Each of these signals is then demultiplexed again to generate second time-division demultiplexed signals, which are permuted until they match the predetermined frame synchronization pattern signal.
Another notable patent involves TD multiplexing digital video signals with a scramble of scrambling stages. This invention is designed for use in a time division multiplexer, which multiplexes a predetermined number of digital input signals bit by bit into a multiplexed signal. The technology suppresses long pathological patterns, making it particularly suitable for optical networks. A parallel scrambler subjects multiple digital video signals to a prescribed number of scrambling stages, ensuring that the output signals are effectively scrambled for enhanced transmission.
Career Highlights
Naoki Shimosaka is currently employed at NEC Corporation, a leading technology company known for its innovations in information technology and communications. His work at NEC has allowed him to focus on developing advanced multiplexing technologies that have wide-ranging applications in telecommunications and digital media.
Collaborations
Throughout his career, Shimosaka has collaborated with notable colleagues, including Kazuhisa Kaede and Katsumi Emura. These collaborations have fostered an environment of innovation and have contributed to the successful development of his patents.
Conclusion
Naoki Shimosaka's contributions to the field of time-division multiplexing have established him as a key figure in technological innovation. His patents reflect a deep understanding of signal processing and a commitment to advancing communication technologies.