Company Filing History:
3 out of 42,485 
3 out of 208 
1 out of 129 
Years Active: 1999-2011
Title: The Innovations of Tesshin Shiga
Introduction
Tesshin Shiga is a notable inventor based in Kodaira, Japan. He has made significant contributions to the field of communication technology, particularly in CDMA systems. With a total of five patents to his name, Shiga's work has had a lasting impact on the industry.
Latest Patents
One of Shiga's latest patents is a CDMA communication system and method. In this innovation, a base station detects a difference between a reference phase of a spreading code and the phase of a received signal from each terminal station. The base station then feeds a phase jump signal, representative of the phase difference, back to each terminal station. After timing acquisition, the reception operation is performed using the reference phase. A shift amount between the phase of a received signal and the reference phase is fed back to each terminal station as phase synchronization control information. Each terminal station coarsely adjusts the phase of the spreading code according to the phase jump signal and then finely adjusts the phase of its transmitting signal based on the phase synchronization control information. This process allows for the synchronization of the phases of signals transmitted from terminal stations and received at the base station, utilizing an orthogonal code for spreading on the reverse links.
Career Highlights
Throughout his career, Tesshin Shiga has worked with prominent companies such as Hitachi, Ltd. and Hitachi Denshi Kabushiki Kaisha. His experience in these organizations has contributed to his expertise in communication technologies and innovations.
Collaborations
Shiga has collaborated with notable coworkers, including Masayuki Ariyoshi and Nobukazu Doi. Their joint efforts have further advanced the field of communication systems.
Conclusion
Tesshin Shiga's contributions to CDMA communication technology and his collaborations with esteemed colleagues highlight his importance as an inventor. His innovative patents continue to influence the industry and pave the way for future advancements.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.