Company Filing History:
1 out of 3 
1 out of 1 
4 out of 832,718 Years Active: 2000-2002
Title: **The Innovative Contributions of Yukari Hashimoto**
Introduction
Yukari Hashimoto is a prominent inventor based in Yokohama, Japan. She has made significant strides in the field of optical disc technology, holding five patents that showcase her innovative approach. Her work focuses on developing advanced measurement devices that enhance the performance of optical systems.
Latest Patents
Among her latest patents, Yukari Hashimoto has developed an **Apparatus for measuring characteristics of optical disc systems and method**. This invention includes a characteristic test device that supplies output from the optical pickup's photo detector as signals A to F, which are directly sent to the sample hold circuits. These circuits, along with a multiplexer and a second analog/digital converting circuit, convert the signals into digital data with a sampling frequency of 50 KHz or more. A computer processes this data by reading a specific program designed for measuring the level of the RF signal.
Another notable patent is the **Jitter measuring method utilizing A/D conversion and device**. This jitter measurement device effectively reproduces signals from optical discs with a simple circuit configuration. The matrix circuit directs RF signals to the analog/digital converting circuit, allowing the computer to compute the slice level and the time points of the RF signals. Furthermore, it calculates the jitter component based on the time breadth between the relevant signal points.
Career Highlights
Yukari has had a distinguished career, having worked at various esteemed organizations, including the Sony Precision Engineering Center in Singapore. Her innovative designs and patent contributions have made her a sought-after expert in the field, enhancing the effectiveness of optical disc systems and paving the way for future developments.
Collaborations
Throughout her career, Yukari has collaborated with notable professionals such as Akihito Nakayama and Kenji Shintani. These partnerships have contributed to her successful patent applications and have fostered an environment of creativity and innovation within her field.
Conclusion
Yukari Hashimoto's contributions to the field of optical disc technology through her five patents demonstrate her commitment to innovation. Her devices for measuring optical characteristics and jitter exemplify her expertise and impact on the industry. As she continues her work, her inventions will undoubtedly pave the way for advancements in optical systems, highlighting her role as a leading inventor in this area.