Location History:
- Suita, JP (1990 - 1994)
- Yokohama, JP (1998 - 2007)
- Tokyo, JP (2010 - 2011)
- Kanagawa, JP (2009 - 2017)
Company Filing History:
Years Active: 1990-2017
Title: Keiichi Iwasaki: Innovator in Electronic Apparatus and Clock Generation
Introduction
Keiichi Iwasaki is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of electronic apparatus and clock generation, holding a total of 15 patents. His innovative work has had a lasting impact on technology and engineering.
Latest Patents
Iwasaki's latest patents include a spread spectrum clock generator, an electronic apparatus, and a spread spectrum clock generation method. The spread spectrum clock generator features a phase comparator that compares a reference clock with a feedback clock. It also includes a low-pass filter that passes a predetermined low-frequency component and a phase lock loop with a voltage-controlled oscillator. This oscillator generates an output clock whose frequency corresponds to the filtered signal. Additionally, a triangular wave controller generates a triangular wave signal for frequency-modulating the spread spectrum clock based on the output clock. A delay controller generates the feedback clock by controlling the delay of the output clock based on the triangular wave signal. The invention also incorporates counters and a phase error correction circuit to ensure accurate clock generation.
Another notable patent is a memory control device that includes multiple delay circuits to set a delay value for each terminal of a memory. This device features a first register to store a first DLL value output by a delay locked loop circuit and several second registers to store setting values for each terminal. The delay controller calculates and updates the setting values based on the DLL outputs.
Career Highlights
Throughout his career, Keiichi Iwasaki has worked with renowned companies such as Ricoh Company, Ltd. and Sony Corporation. His experience in these leading organizations has allowed him to refine his skills and contribute to groundbreaking technologies.
Collaborations
Iwasaki has collaborated with notable coworkers, including Kazuyuki Shimada and Yoshiharu Niito. Their combined expertise has fostered innovation and advancement in their respective fields.
Conclusion
Keiichi Iwasaki's contributions to electronic apparatus and clock generation are noteworthy. His patents reflect a deep understanding of technology and a commitment to innovation. His work continues to influence the industry and inspire future inventors.