Location History:
- Oora, JA (1977)
- Oora, JP (1979 - 1980)
- Gunma, JP (1979 - 1981)
Company Filing History:
5 out of 8,776 
5 out of 68 
1 out of 1 Years Active: 1977-1981
Title: Norio Yamashita: Innovator in Tuning Control Technology
Introduction
Norio Yamashita is a notable inventor based in Oora, Japan. He has made significant contributions to the field of tuning control technology, holding a total of 5 patents. His work has advanced the functionality of digital tuners and receivers, showcasing his expertise in electronic engineering.
Latest Patents
Yamashita's latest patents include a "Tuning Control Apparatus for Digital Tuner" and a "Channel Selecting Apparatus in a Receiver." The tuning control apparatus employs a voltage-controlled variable capacitance diode as a tuning element. It features a tuning state detecting circuit that responds to signals indicating whether the actual tuning frequency is within a predetermined range. This innovation allows for precise tuning to broadcasting signals. The channel selecting apparatus is designed for superheterodyne receivers and includes a high-frequency amplifier and a local oscillator. It enables fast scanning of receiving channels through an up-down counter that responds to command signals from scanning switches.
Career Highlights
Throughout his career, Norio Yamashita has worked with prominent companies such as Sanyo Electric Co., Ltd. and Tokyo Sanyo Electric Co. His experience in these organizations has contributed to his development as an inventor and has allowed him to refine his skills in electronic design and innovation.
Collaborations
Yamashita has collaborated with notable coworkers, including Shigehiko Ikeguchi and Eiji Matsuda. Their collective expertise has likely influenced the advancements in the technologies they developed together.
Conclusion
Norio Yamashita's contributions to tuning control technology have made a lasting impact in the field of electronics. His innovative patents reflect his dedication to enhancing digital tuning systems.
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.