Company Filing History:
Years Active: 2005-2011
Title: Masami Oosawa: Innovator in Cable Communication Technology
Introduction
Masami Oosawa is a notable inventor based in Kumagaya, Japan. He has made significant contributions to the field of cable communication technology, holding a total of 7 patents. His work has been instrumental in advancing communication systems, particularly in the areas of signal processing and transmission.
Latest Patents
Oosawa's latest patents include a cable communication apparatus and a cable communication method. The cable communication apparatus is designed for a set-top box (STB) within a CATV system. It features a diplexer, a signal level adjusting unit, a splitter, a tuner, a demodulating unit, a memory, and a CPU. The CPU calculates the correct reception level of a downstream signal by arithmetically operating a level correction value based on the detected level adjustment state of the signal level adjusting unit and the reception level after automatic gain control (AGC). This information is then communicated to a CATV center station via an upstream signal.
Another significant patent is the transmission/reception integrated radio-frequency apparatus. This invention provides a highly reliable transmission and reception system that achieves high communication quality in a cable modem. The reception RF signal is input to a reception system block through an input/output terminal, converted to an intermediate-frequency signal, and subsequently output from a terminal. The transmission processing section is connected to the input/output terminal through an overvoltage protection circuit, a high-pass filter, and a low-pass filter to suppress harmonics.
Career Highlights
Masami Oosawa is currently employed at Kabushiki Kaisha Toshiba, where he continues to innovate and develop new technologies. His work has garnered attention for its practical applications in enhancing communication systems.
Collaborations
Oosawa has collaborated with notable colleagues, including Katsuya Kudo and Shuji Abe, who have contributed to his projects and innovations.
Conclusion
Masami Oosawa's contributions to cable communication technology exemplify the impact of innovative thinking in the field. His patents reflect a commitment to improving communication systems, making him a significant figure in the industry.