Company Filing History:
Years Active: 2004-2006
Title: Yihong Xu: Innovator in Graphical Bar Code Technology
Introduction
Yihong Xu is a notable inventor based in Marlborough, MA, who has made significant contributions to the field of graphical bar code technology. With a total of four patents to his name, Xu has developed innovative systems and methods that enhance the functionality and visual quality of bar codes.
Latest Patents
One of Xu's latest patents is focused on authenticatable graphical bar codes. This invention describes systems and methods for generating and decoding these bar codes. In one aspect, a corroborative signed message is generated from the information to be encoded. A base image is then modulated with a graphical encoding of the signed message to produce a marked image. In another aspect, a signed message is extracted from a marked image based on a comparison of the marked image and the base image. The extracted signed message is decoded to produce a decoded message, allowing for the information encoded in the marked image to be authenticated.
Another significant patent by Xu involves a barcode with enhanced visual quality. This barcode can be used with items such as documents and includes a background field that has an embedded graphic. The background carries data related to the item, while the embedded graphic may obscure some background data. The bar coding apparatus and system involve two basic functions: encoding and decoding. The encoding function uses an algorithm to generate the barcode, while the graphic is embedded onto it. The decoding process involves machine-reading the barcode using a decoding algorithm, which can operate with or without the original bit map used to generate the graphic.
Career Highlights
Yihong Xu is currently employed at Hewlett-Packard Development Company, L.P., where he continues to innovate in the field of bar code technology. His work has significantly impacted how bar codes are utilized in various applications, enhancing both security and user experience.
Collaborations
Throughout his career, Xu has collaborated with notable colleagues, including Cormac Herley and Jonathan Yen. These collaborations have contributed to the advancement of technology in their respective fields.
Conclusion
Yihong Xu's contributions to graphical bar code technology demonstrate his innovative spirit and commitment to enhancing the functionality of everyday items. His patents reflect a deep understanding of both technical and practical aspects of bar code systems, making him a valuable figure in the field of invention.