Company Filing History:
Years Active: 2001-2003
Title: Innovations of John Liu in Printer Software Validation
Introduction
John Liu is an accomplished inventor based in Parsippany, NJ (US). He has made significant contributions to the field of printer technology, particularly in software validation methods. With a total of 2 patents, Liu's work has had a notable impact on the efficiency and accuracy of printer graphics interpreter software.
Latest Patents
One of Liu's latest patents is a software validation method and system designed to test revisions made to printer graphics interpreter software. This innovative method involves inputting a test suite of POSTSCRIPT, PCL, or other high-level printer languages into a production version of a printer's internal interpreter software. The process generates a first bit-map that controls each pixel in the printing of a page. Subsequently, the same test suite is fed to a work-in-progress revision of the printer's internal interpreter software, generating a second bit-map. By subtracting the first and second bit-maps, a difference bit-map is created and inspected. If only minor shifts of objects are noted, or if no differences are apparent, the work-in-progress revision is accepted as the new production standard. The second bit-map then replaces the first. If discrepancies are found, the work-in-progress revision is reworked to correct the printing interpretation errors.
Career Highlights
John Liu is currently employed at Electronics for Imaging GmbH, where he continues to innovate in the field of printing technology. His expertise in software validation has positioned him as a key player in enhancing printer performance and reliability.
Collaborations
Liu has collaborated with notable coworkers such as James K Schwarz, Jr and Sol Goldenberg, contributing to a dynamic work environment that fosters innovation and creativity.
Conclusion
John Liu's contributions to printer software validation exemplify the importance of innovation in technology. His patents reflect a commitment to improving the functionality and accuracy of printing systems. Liu's work continues to influence the industry, paving the way for future advancements in printer technology.