Company Filing History:
Years Active: 1995-2002
Title: Masayuki Ishizaki: Innovator in Encryption and Communication Technologies
Introduction
Masayuki Ishizaki is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the fields of encryption processing systems and communication technologies. With a total of seven patents to his name, Ishizaki's work has had a considerable impact on the industry.
Latest Patents
Ishizaki's latest patents include an encryption processing system that utilizes a random-number generator to create first and second title keys based on random numbers. This system employs a first DES encryption circuit to encrypt input data using the first title key. The initial values of the input data consist of a data identifier (ID) and program clock reference (PCR) extracted from a packet header. After the encryption of these initial values, the result from the first DES encryption circuit serves as input for a second DES encryption circuit, which encrypts the output with the second title key. An exclusive OR circuit then generates encrypted data by combining the stored packet data with the result from the second DES encryption circuit.
Another notable patent is a program reservation method in a Cable TV system. This method generates program reservation information for each communication line route in a Cable TV center. It is designed to optimize the number of digital lines in relation to the number of subscribers while maintaining On Demand service. Subscribers can recognize their program reservation status and make overlapping reservations if they desire simultaneous delivery of a program already reserved by another party. This approach allows for efficient utilization of communication lines by enabling simultaneous program transmission.
Career Highlights
Masayuki Ishizaki is currently employed at Fujitsu Corporation, where he continues to innovate and develop new technologies. His work has been instrumental in advancing encryption and communication systems, making them more efficient and user-friendly.
Collaborations
Ishizaki has collaborated with notable coworkers, including Kazuo Satoh and Yoshimasa Kadooka. Their combined expertise has contributed to the success of various projects and patents.
Conclusion
Masayuki Ishizaki is a distinguished inventor whose work in encryption and communication technologies has significantly influenced the industry. His innovative patents and contributions continue to shape the future of these fields.
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.