Yuki Ozawa

Title: Yuki Ozawa: Innovator in Imaging Technology

Introduction

Yuki Ozawa is a prominent inventor based in Kanagawa, Japan, known for his contributions to imaging technology. With a total of three patents to his name, he has made significant advancements in the field, particularly in the development of imaging apparatuses and electronic devices.

Latest Patents

Ozawa's latest patents include an innovative imaging apparatus designed to detect excessive light received by an image sensor with high accuracy. This invention addresses the problem of accurately detecting excessive light without increasing the circuit scale. The imaging apparatus features a pixel unit that includes a photoelectric conversion element and a first transistor, which outputs a signal photoelectrically converted by the photoelectric conversion element to a signal line. Additionally, it incorporates an excessive light amount detection circuit that utilizes a second transistor and a capacitor connected in series between the signal line and a reference potential node. This circuit adjusts the gate voltage of the second transistor, taking into account various factors such as fluctuations in power supply voltage and variations in the threshold voltage of the first transistor.

Another notable patent involves an analog-to-digital conversion circuit that reduces power consumption using a time-to-digital converter (TDC). This circuit comprises a comparator, a counter, a time-to-digital converter, and a holding unit. The comparator compares an analog signal with a predetermined reference signal and outputs a comparison result. The counter counts a predetermined value and outputs a bit string indicating this count. The time-to-digital converter then converts the time from when the comparison result is inverted until the least significant bit of the bit string reaches a predetermined value. The holding unit retains the bit string at the moment of inversion.

Career Highlights

Yuki Ozawa is currently employed at Sony Semiconductor Solutions Corporation, where he continues to innovate and develop cutting-edge technologies in imaging. His work has significantly impacted the efficiency and effectiveness of imaging devices, making them more reliable and energy-efficient.

Collaborations

Ozawa has collaborated with notable colleagues, including Takehiro Otani and Tomoyuki Hiro, contributing to various projects that enhance imaging technology.

Conclusion

Yuki Ozawa's contributions to imaging technology through his patents and work at Sony Semiconductor Solutions Corporation highlight his role as a leading inventor in the field. His innovative solutions continue to push the boundaries of what is possible in imaging devices.