This inventor holds 1 USPTO granted patent. Top assignee: Hitachi, Ltd.. Active years: 2010.
Company Filing History:
Years Active: 2010
Title: Masahito Hirokawa: Innovator in DTMF Transmission Technology
Introduction
Masahito Hirokawa is a notable inventor based in Fukushima-ken, Japan. He has made significant contributions to the field of communication technology, particularly in the area of DTMF (Dual-Tone Multi-Frequency) transmission.
Latest Patents
Hirokawa holds a patent for a method titled "Method for DTMF transfer by RTP." This innovative method facilitates DTMF transmission between different address systems within a communication system. The system includes a first network (NW)A with an SIP terminalA connected to an SIP serverA, and a second network (NW)B with an SIP terminalB connected to an SIP serverB. The SIP converter plays a crucial role by detecting coded DTMF information from one of the networks during an established session. It determines whether the other network supports the coded DTMF information and, if not, stores voice-data DTMF corresponding to the coded DTMF information into a payload of RTP for transfer to the SIP terminal of the other network.
Career Highlights
Masahito Hirokawa is currently employed at Hitachi, Ltd., where he continues to develop and refine communication technologies. His work has been instrumental in enhancing the efficiency and reliability of DTMF transmission in various applications.
Collaborations
Hirokawa has collaborated with notable colleagues, including Yoshie Yamaguchi and Makoto Kumada. Their combined expertise has contributed to advancements in communication systems and technologies.
Conclusion
Masahito Hirokawa's innovative work in DTMF transmission technology exemplifies the impact of dedicated inventors in the field of communication. His contributions continue to shape the way information is transmitted across networks.