This inventor holds 3 USPTO granted patents. Top assignee: Hewlett-Packard Company. Active years: 1989-1997.
Company Filing History:
Years Active: 1989-1997
Title: Innovations by Anthony D Parkhurst
Introduction
Anthony D Parkhurst is a notable inventor based in Oceanside, CA (US). He has made significant contributions to the field of printing technology, holding a total of 3 patents. His work focuses on improving the efficiency and quality of printed images.
Latest Patents
One of his latest patents is an "Arbitrary masking technique for filling in shapes for display." This invention modifies the conventional three-step Raster Operation (ROP) process, requiring less computation and memory. A printer driver routine installed in the host computer converts conventional ROP instructions into a modified set of instructions, which are then transmitted and processed by the printer. This method results in memory savings of up to 50% and significantly speeds up print time. The first step of XORing the fill pattern with the destination area is deleted, allowing arbitrary shapes to be transmitted to the printer and stored in a temporary masking buffer.
Another significant patent is the "Interlace printing process." This innovation improves the quality of printed images produced by ink-jet printers by staggering applications of ink dots to pixel locations. Overlapping ink dots are printed on successive passes of the printhead, enhancing the quality of multi-colored or multi-shaded images. By grouping pixels into super pixels and applying various combinations of colored ink dots in a staggered sequence, the overall print quality is further improved.
Career Highlights
Anthony D Parkhurst is currently employed at Hewlett-Packard Company, where he continues to innovate in the field of printing technology. His work has had a substantial impact on the efficiency and quality of printing processes.
Collaborations
He has collaborated with notable coworkers, including Alpha N Doan and Thomas J Halpenny, contributing to advancements in printing technology.
Conclusion
Anthony D Parkhurst's contributions to printing technology through his innovative patents have significantly enhanced the efficiency and quality of printed images. His work continues to influence the industry and showcases the importance of innovation in technology.