Location History:
- Kanagawa, JP (1985)
- Kasugai, JP (2001 - 2002)
- Kawasaki, JP (2005 - 2013)
Company Filing History:
9 out of 39,228 
6 out of 1,674 
3 out of 467 
Years Active: 1985-2013
Title: Katsuyoshi Yamamoto: Innovator in Solid-State Imaging Technology
Introduction
Katsuyoshi Yamamoto, based in Kawasaki, Japan, is a prominent inventor known for his contributions to solid-state imaging technology. He holds a total of 19 patents, focusing on advancements that enhance image capture methods.
Latest Patents
Among his most notable patents are a solid-state image pickup device and image pickup method designed to eliminate dark-current components by adjusting the black levels appropriately, even in varying conditions. This innovation involves a pixel array composed of both light-receiving and light-blocking pixel elements arranged in a manner that enhances performance across horizontal lines. The associated readout circuit block reads pixel signals and processes these through ADC circuits, generating ramp signals to optimize image quality.
In addition, his imaging device patent describes a novel structure where the first diffusion region in each pixel acts as a photodiode, with added protection from a second diffusion region. This design improves detection sensitivity while minimizing dark current noise, achieved by strategically covering parts of the first diffusion region that typically exhibit crystal defects.
Career Highlights
Katsuyoshi Yamamoto has had a notable career, including significant roles at Fujitsu Corporation and Fujitsu Semiconductor Limited. His work at these companies has revolved around the cutting-edge development of imaging technologies that have impacted various applications in consumer electronics and beyond.
Collaborations
Throughout his career, Yamamoto has collaborated with esteemed colleagues such as Toshitaka Mizuguchi and Jun Funakoshi. These collaborations have resulted in significant technological advancements and innovation in the field of solid-state imaging.
Conclusion
Katsuyoshi Yamamoto's relentless pursuit of innovation continues to shape the landscape of imaging technology. His contributions, underscored by 19 patents, further illustrate the importance of ongoing research and development in enhancing photographic capabilities and the quality of visual media.
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.