This inventor holds 5 USPTO granted patents. Top assignees: Avago Technologies Ecbu IP (Singapore) Pte. Ltd., Pixart Imaging Incorporated, Avago Technologies General IP (Singapore) Pte. Ltd.. Active years: 2009-2014.
Location History:
- Ghazipur, IN (2009)
- Fort Collins, CO (US) (2011 - 2014)
Company Filing History:
2 out of 497 
2 out of 1,504 
1 out of 1,813 
Years Active: 2009-2014
Title: Abhay Kumar Rai: Innovator in Optical Encoders and Touchscreen Technology
Introduction
Abhay Kumar Rai is a notable inventor based in Fort Collins, CO (US). He has made significant contributions to the fields of optical encoders and touchscreen technology, holding a total of 5 patents. His innovative work has paved the way for advancements in high-resolution optical systems and efficient touchscreen controllers.
Latest Patents
One of his latest patents is focused on interpolation circuitry for optical encoders. This invention discloses various embodiments of circuitry and methods for generating interpolated signals in an optical encoder. The configurations and circuitry allow for very high-resolution reflective optical encoders to be provided in compact packages. The methods of making and using such optical encoders are also detailed. According to one embodiment, the interpolated signals are generated through the use of signal generation circuitry, peak voltage generation circuitry, reference voltage generation circuitry, slope detection circuitry, and a clocked comparator that outputs interpolated output pulses.
Another significant patent by Rai is related to on-chip power-down generation for low drop-out (LDO) based mutual capacitance touchscreen controllers. This invention provides various methods and devices for a mutual capacitance touchscreen controller that includes a first on-chip LDO. This LDO is configured to receive and regulate an input supply voltage (VSUPPLY) and provide a regulated output voltage (VDDA). A first comparator in the controller receives VSUPPLY and VDDA as inputs and outputs a signal EN, which is used to control the LDO's operation mode.
Career Highlights
Throughout his career, Abhay Kumar Rai has worked with several prominent companies, including Pixart Imaging Incorporated and Avago Technologies. His experience in these organizations has contributed to his expertise in developing cutting-edge technologies in the field of electronics.
Collaborations
Rai has collaborated with notable professionals in his field, including Jeffrey Stone and Ronald Dean Gillingham. These collaborations have likely enriched his work and contributed to the success of his inventions.
Conclusion
Abhay Kumar Rai is a distinguished inventor whose work in optical encoders and touchscreen technology has led to significant advancements in these fields. His innovative patents and collaborations reflect his commitment to pushing the boundaries of technology.