Andrew Kenneth John McMahon

Title: Innovations of Andrew Kenneth John McMahon

Introduction

Andrew Kenneth John McMahon is a notable inventor based in Sunnyvale, CA. He has made significant contributions to the field of imaging technology, holding a total of 3 patents. His work focuses on improving image quality and processing efficiency.

Latest Patents

One of his latest patents is titled "Black level calibration method for imager with hysteresis comparison and adaptive step size." This invention provides a method and apparatus for calibrating the black level in an imager to reduce flicker noise. The method involves setting two ranges: a first range that is larger than the noise level at the highest PGA gain and a second range that is smaller than a level that would excessively reduce the ADC dynamic range. The ranges can be adjusted in real time to accommodate changes in the imager. When the black level is within the second range, a determination is made to check if it has been calibrated before. If it has, the DAC output remains constant; otherwise, the DAC code is adjusted to move the black level toward the first range, using a small step size to minimize flicker.

Another significant patent is the "Pixel processing system for image scanning applications." This invention utilizes a linear pixel-array processing system that combines digital and analog signal processing techniques to calibrate the gain and offset of each pixel in the analog domain. By applying fixed gain and offset values in the analog domain, the system can adjust these parameters at high speeds, improving the dynamic range of pixel conversion. The algorithmic calibration routine corrects for non-ideal effects in the signal path, allowing for a cost-effective solution that can be multiplexed to process multiple pixel arrays.

Career Highlights

Throughout his career, Andrew has worked with prominent companies such as Eastman Kodak Company and National Semiconductor Corporation. His experience in these organizations has contributed to his expertise in imaging technologies and patent development.

Collaborations

Andrew has collaborated with notable individuals in his field, including David Michael Boisvert and Joseph D. Clark. These collaborations have likely enriched his work and led to innovative advancements in imaging technology.

Conclusion

Andrew Kenneth John McMahon is a distinguished inventor whose contributions to imaging technology have been recognized through his patents. His innovative methods and systems continue to influence the field, showcasing his commitment to enhancing image quality and processing efficiency.