This inventor holds 2 USPTO granted patents. Top assignee: Matsushita Electric Industrial Co., Ltd.. Active years: 1987-1988.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Yokohama, JP (1987)
- Kanagawa, JP (1988)
Company Filing History:
Years Active: 1987-1988
Title: Tsutomu Shishido: Innovator in Tuner Technology
Introduction
Tsutomu Shishido is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of tuner technology, holding a total of 2 patents. His work has been instrumental in advancing the functionality and efficiency of tuners used in various electronic devices.
Latest Patents
Shishido's latest patents include the "Double Converter Tuner" and the "Double Superheterodyne Tuner." The Double Converter Tuner features an input circuit that performs first band control on an input signal, followed by amplification and further band control. It includes a first intermediate frequency (IF) converter that generates a first IF signal with a higher bandwidth than the input signal's reception bandwidth. The design also incorporates a second IF converter and circuits for amplifying outputs while preventing frequency interference between the converters.
The Double Superheterodyne Tuner is designed to be compact and well-shielded. It consists of an input circuit portion, a first mixing portion, a first intermediate frequency bandpass filter, a second mixing portion, and an output circuit portion, all mounted in separate casings. This arrangement minimizes interference and simplifies the manufacturing and adjustment processes of the tuner.
Career Highlights
Tsutomu Shishido is associated with Matsushita Electric Industrial Co., Ltd., a company renowned for its innovations in electronics. His work has contributed to the development of advanced tuner technologies that enhance audio and video reception in various devices.
Collaborations
Shishido has collaborated with notable coworkers such as Sadahiko Yamashita and Makoto Hasegawa. Their combined expertise has fostered innovation and development in the field of tuner technology.
Conclusion
Tsutomu Shishido's contributions to tuner technology through his patents and collaborations have significantly impacted the electronics industry. His innovative designs continue to influence the development of efficient and effective tuning systems.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile