This inventor holds 6 USPTO granted patents and 2 published patent applications and 1 EPO patent. Top assignees: Rohm Co., Ltd., Kionix, Inc.. Active years: 2011-2025.
Company Filing History:
6 out of 6,021 
1 out of 45 Years Active: 2011-2025
Title: Yo Yamashiro: Innovator in Oscillator Circuits and Accelerometers
Introduction
Yo Yamashiro is a prominent inventor based in Kyoto, Japan. He has made significant contributions to the fields of electronics and sensor technology. With a total of 6 patents to his name, his work continues to influence various technological advancements.
Latest Patents
Yamashiro's latest patents include an innovative oscillator circuit. This oscillator circuit features a plurality of multi-stage inverters arranged in a ring shape to form a loop path. It also includes a capacitor connected in series on the loop path, along with a charging/discharging control circuit. This circuit is designed to charge and discharge the capacitor by pulse-driving a voltage level at one end of the capacitor based on the output of any of the multi-stage inverters. Additionally, a bias current generating circuit supplies bias currents to each of the multi-stage inverters and the charging/discharging control circuit.
Another notable patent is for an accelerometer that provides a root-mean-square (RMS) output. This accelerometer includes a MEMS device and an ASIC. The MEMS device has a structure that changes in response to the acceleration of an object. The ASIC determines the acceleration based on these changes and includes analog circuitry, an ADC, and firmware. The analog circuitry measures the changes and generates analog signals, while the ADC converts these signals to digital form. The firmware performs an RMS calculation to provide a value representing the acceleration of the object.
Career Highlights
Throughout his career, Yo Yamashiro has worked with notable companies such as Rohm Co., Ltd. and Kionix, Inc. His experience in these organizations has allowed him to develop and refine his innovative ideas in electronics and sensor technology.
Collaborations
Yamashiro has collaborated with talented individuals in his field, including Yuki Oishi and Brian Thomas Samuelson. These collaborations have contributed to the success of his projects and patents.
Conclusion
Yo Yamashiro is a distinguished inventor whose work in oscillator circuits and accelerometers has made a lasting impact on technology. His innovative patents and collaborations highlight his significant contributions to the field.