Henry J Constant, Jr

Title: The Innovations of Henry J Constant, Jr.

Introduction

Henry J Constant, Jr. is a notable inventor based in West Warwick, Rhode Island. He has made significant contributions to the field of optical reader systems, holding a total of three patents. His work focuses on enhancing the calibration and quality assessment of optical readers, which are essential in various applications.

Latest Patents

One of his latest patents is titled "System and method for calibrating an optical reader system." This invention employs a target with areas comprising linear gray scale levels, illuminated by an array of LEDs. The light reflected from the target impacts photo-transistors, which are biased in their linear ranges. The target is scanned while the LED drive current is changed, allowing for the analysis of photo-transistor responses to different gray scale levels. The goal is to select the LED drive current that produces a linear output from the photo-transistors over the gray scale dynamic range. Additionally, correction functions are generated for balancing or correcting each pixel in the raw image data.

Another significant patent is the "Optical reader quality factor." This method and apparatus generate and apply quality factors (QFs) to an optical reader after calibration. A mid-range gray scale level is selected and scanned, producing digital numbers (DNs) for all pixels responding to the document reading. A histogram of the DNs is generated, and characteristics of the histogram distribution are calculated to serve as QFs. These QFs can be utilized during manufacturing and for field servicing of the optical reader.

Career Highlights

Henry J Constant, Jr. is currently employed at Gtech Corporation, where he continues to innovate in the field of optical technology. His work has significantly impacted the efficiency and accuracy of optical readers, making them more reliable for various applications.

Collaborations

Throughout his career, Henry has collaborated with notable colleagues, including Steven A Bozzi and Bruce I Parkes. These collaborations have contributed to the advancement of technology in optical reading systems.

Conclusion

Henry J Constant, Jr. is a distinguished inventor whose work in optical reader systems has led to significant advancements in calibration and quality assessment. His contributions continue to influence the industry and enhance the functionality of optical technologies.