Location History:
- Mercer County, NJ (US) (1993)
- Princeton, NJ (US) (2009)
Company Filing History:
Years Active: 1993-2009
Title: Innovations of Ker-Ming Chang
Introduction
Ker-Ming Chang is an accomplished inventor based in Princeton, NJ. He has made significant contributions to the field of technology, particularly in data encryption and optical scanning. With a total of 2 patents, his work showcases innovative methods that enhance security and efficiency in data processing.
Latest Patents
One of his latest patents is titled "Methods for conducting server-side encryption/decryption-on-demand." This invention provides a method and system for encrypting and decrypting data files on a web-based computer system. It involves encrypting the data file in a memory subsystem, such as RAM, and storing the encrypted data file in various memory locations. The system allows for the analysis and modification of the encrypted data file, followed by retrieval and decryption for display on a web browser. The method supports dual-key encryption algorithms, such as PGP, and utilizes SSL/HTTPS protocols for enhanced security.
Another notable patent is the "Optical scanner threshold setting method and sheet." This invention optimizes optical scanners by automatically determining image processing threshold values using a unique threshold calibration sheet. The calibration sheet features lines at a forty-five-degree angle to the document's path through the scanner, with a predetermined image dot count. The method includes repetitively scanning the sheet to determine scanner threshold values that meet specific relationships with the dot count, ensuring uniform results across multiple scanner cameras.
Career Highlights
Ker-Ming Chang is currently employed at Educational Testing Service, where he applies his expertise in technology to improve educational assessments. His innovative approaches have contributed to advancements in the field, making a lasting impact on how data is processed and secured.
Collaborations
Throughout his career, Ker-Ming has collaborated with notable colleagues, including Dennis C. Quardt and Edwin O. Blew. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies.
Conclusion
Ker-Ming Chang's contributions to the fields of data encryption and optical scanning demonstrate his commitment to innovation. His patents reflect a deep understanding of technology and its applications, making him a valuable asset in the industry.