Company Filing History:
4 out of 52,766 
1 out of 2,916 
Years Active: 1986-2005
Title: Shuji Hirakawa: Innovator in Data Broadcasting Technology
Introduction
Shuji Hirakawa is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of data broadcasting technology, holding a total of five patents. His work focuses on enhancing the efficiency and functionality of data transmission systems.
Latest Patents
Hirakawa's latest patents include a data broadcasting system, a receiving terminal device, a contents providing server, and a contents providing method. The data broadcasting system he developed transmits contents used in a program along with presentation control data. This system allows for multiplexing by assigning arbitrary channels in each program. It features multiple content groups, including real-time reception type contents and first and second store type contents, which can be selectively received and reproduced in real time.
Another notable patent is the code division multiplex transmission system. This system produces data for transmission by time-division multiplexing signals for synchronizing spread codes. It generates spread frequency modulated signals and code-division multiplexes them over multiple transmission data streams. This innovation allows receiving terminals to easily obtain information about all transmission data streams, enhancing the overall efficiency of data reception.
Career Highlights
Hirakawa has worked with notable companies such as Toshiba Corporation and Tokyo Shibaura Electric Co., Ltd. His experience in these organizations has contributed to his expertise in developing advanced technologies in data broadcasting.
Collaborations
Some of his notable coworkers include Nobutaka Shinohara and Shigeru Tashiro. Their collaboration has likely played a role in the successful development of innovative technologies in their respective fields.
Conclusion
Shuji Hirakawa's contributions to data broadcasting technology have significantly impacted the industry. His innovative patents and career achievements reflect his dedication to advancing communication technologies.