Location History:
- Yokohama, JP (2000)
- Saitama-ken, JP (2001)
- Fukaya, JP (2002 - 2010)
Company Filing History:
8 out of 52,752 
2 out of 248 Years Active: 2000-2010
Title: The Innovations of Masao Karube
Introduction
Masao Karube is a prominent inventor based in Fukaya, Japan. He has made significant contributions to the field of display technology, holding a total of 10 patents. His work has been instrumental in advancing the functionality and efficiency of display apparatuses.
Latest Patents
Karube's latest patents include a display apparatus and a digital-to-analog conversion circuit and method. The signal line drive circuit he developed features a latch circuit that latches digital pixel data, a D/A converter that transforms the latch output into an analog video signal, and an amplifier that enhances the analog video signal. Additionally, the circuit includes a signal selection mechanism that directs the amplified analog video signal to the appropriate signal line. The amplifier's design incorporates an odd number of cascade-connected inverters, with capacitor elements strategically placed to improve accuracy by separating the power supply line for the first stage inverter. Another notable patent involves a liquid crystal display that integrates a source driver and scanning line drive circuit, designed to optimize performance during power-on cycles.
Career Highlights
Throughout his career, Masao Karube has worked with notable companies such as Toshiba Corporation and Toshiba Matsushita Display Technology Co., Ltd. His experience in these organizations has allowed him to refine his expertise in display technologies and contribute to innovative solutions in the industry.
Collaborations
Karube has collaborated with esteemed colleagues, including Kazuo Nakamura and Takashi Nakamura. Their joint efforts have further propelled advancements in display technology, showcasing the importance of teamwork in the innovation process.
Conclusion
Masao Karube's contributions to display technology through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence the development of advanced display systems, ensuring a lasting impact on the industry.