Company Filing History:
Years Active: 1990-1998
Title: Hiroaki Matsumoto: Innovator in Clock Signal Generation
Introduction
Hiroaki Matsumoto is a prominent inventor based in Chiba, Japan. He has made significant contributions to the field of electronics, particularly in the development of clock signal generating apparatuses. With a total of 8 patents to his name, Matsumoto's work has had a substantial impact on digital video signal processing.
Latest Patents
Matsumoto's latest patents include a clock signal generating apparatus and a clock signal generating method. The first patent focuses on generating a clock signal that is phase-locked to a horizontal synchronization signal of a digital video signal. This innovation aims to eliminate or reduce noise that may be superimposed on the horizontal synchronization signal. To achieve this, a noise suppressing device is utilized prior to a phase comparator, which may include a slice circuit and/or a spike removing circuit. The second patent describes an apparatus for generating a clock signal that is phase-locked to a sync signal of a video signal. This apparatus features an error detector that identifies phase errors between the sync signal and an internally produced comparison signal. It also includes a clock signal generator with a variably controlled oscillation frequency, a counter for counting the output, and a circuit for producing the comparison signal based on the counter's count value. This design effectively prevents significant phase errors during critical moments, such as head switching times or vertical blanking intervals.
Career Highlights
Hiroaki Matsumoto is currently employed at Sony Corporation, where he continues to innovate in the field of electronics. His work has been instrumental in advancing technologies related to video signal processing and synchronization.
Collaborations
Matsumoto has collaborated with notable colleagues, including Tokuya Fukuda and Tetsuya Senda. Their combined expertise has contributed to the successful development of various technologies in their field.
Conclusion
Hiroaki Matsumoto is a distinguished inventor whose contributions to clock signal generation have significantly advanced the field of digital video technology. His innovative patents and collaborations reflect his commitment to excellence in electronics.
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