Po-Hao Wu

Title: Po-Hao Wu: Innovator in Active Pixel Sensor Technology

Introduction

Po-Hao Wu is a distinguished inventor based in Zhubei, Taiwan. He has made significant contributions to the field of sensor technology, holding a total of 3 patents. His work primarily focuses on developing advanced devices that enhance optical sensing capabilities.

Latest Patents

One of his latest patents is for an active pixel sensor device and its operating method. This invention includes an active pixel sensing array and a synchronous reading circuit. The active pixel sensing array is formed by a plurality of sensing pixels arranged in an array format. Each sensing pixel is equipped with a power terminal. The synchronous reading circuit connects to these power terminals, detecting the summation of currents flowing through all sensing pixels. It converts this summation into an output signal that represents the optical sensing information. This device not only reads each sensing pixel but also controls the synchronous reading circuit to read the output signal corresponding to the total current of all sensing pixels. This technology can be applied to large-area sensing applications.

Another notable patent involves a method and circuit for trimming an internal oscillator of a USB device. This invention generates a clock signal as a frequency source for the USB device. It detects the end of a packet from an input data stream to initialize a counter. The invention identifies a token packet in the data stream to detect a start of frame token packet, allowing the counter to carry out clock counting on the clock signal. This process obtains a count value, which is then compared with a reference value to determine a trimming code for adjusting the clock frequency of the internal oscillator.

Career Highlights

Po-Hao Wu is currently employed at Elan Microelectronics Corporation, where he continues to innovate in the field of microelectronics and sensor technology. His work has significantly impacted the development of advanced electronic devices.

Collaborations

Throughout his career, Po-Hao Wu has collaborated with notable colleagues, including Tsung-Yin Chiang and Chun-Chi Wang. Their combined expertise has contributed to the advancement of technology in their respective fields.

Conclusion

Po-Hao Wu is a prominent inventor whose work in active pixel sensor technology and USB device oscillators showcases his innovative spirit. His contributions continue to influence the field of microelectronics, paving the way for future advancements.