Company Filing History:
7 out of 39,238 
7 out of 8,781 
3 out of 42,496 
Years Active: 2006-2011
Title: Seigou Kotani: Innovator in Data Distribution Technology
Introduction
Seigou Kotani is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of data distribution technology, holding a total of 7 patents. His innovative work focuses on enhancing the security and efficiency of data transmission, particularly in the realm of encrypted music data.
Latest Patents
One of Kotani's latest patents is a data distributing system and recording medium used for it. This invention involves the transfer of encrypted music data and additional information necessary for accessing a server from a CD-ROM to a memory card. The memory card receives the distribution of a contents decoding key (Kc) via a digital portable phone network, which is essential for decoding the encrypted music data and control information data (AC). The memory card extracts a session key (Ks) from the data applied onto a data bus (BS) by executing a decryption process. An encryption processing unit then decrypts a public encryption key (KPcard) of the memory card based on the session key (Ks) and applies the encrypted key to a server via the data bus (BS). Furthermore, the memory card receives data such as a license key (Kc), license ID data, and user ID data, all encrypted with a public encryption key (KPcard) unique to each memory card for storage. It also receives encrypted content data [Dc]Kc, encrypted with the license key (Kc) from the data bus (BS) for storage.
Career Highlights
Throughout his career, Seigou Kotani has worked with notable companies such as Fujitsu Corporation and Sanyo Electric Co., Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in data distribution technology.
Collaborations
Kotani has collaborated with talented individuals in his field, including Takahisa Hatakeyama and Takayuki Hasebe. These collaborations have contributed to the advancement of his inventions and the overall progress in data distribution technology.
Conclusion
Seigou Kotani is a distinguished inventor whose work in data distribution technology has led to significant advancements in the field. His innovative patents and collaborations with industry professionals highlight his commitment to enhancing data security and efficiency.