Location History:
- Redmond, WA (US) (1998)
- Bellevue, WA (US) (2000 - 2006)
Company Filing History:
6 out of 54,638 
1 out of 5,303 
Years Active: 1998-2006
Title: Innovations of Donald P. Mitchell
Introduction
Donald P. Mitchell is a notable inventor based in Bellevue, WA (US). He holds a total of seven patents, showcasing his contributions to the field of image data processing and rendering methods. His work has significantly impacted how images are displayed on devices with pixels that have separately controllable sub-components.
Latest Patents
One of his latest patents focuses on filtering image data to obtain samples mapped to pixel sub-components of a display device. This innovation involves passing image data, encoded in a three-channel signal, through a low-pass filter to eliminate frequencies above a selected cutoff frequency. This process allows for the sampling of color components that map different image regions to individual pixel sub-components. It has been discovered that color aliasing effects can be significantly reduced at a cutoff frequency slightly higher than the Nyquist frequency, which enhances the spatial resolution of the image. The image data is then processed through a generalized set of nine sampling filters, each corresponding to a combination of one color and one pixel sub-component. The filtering coefficients can be optimized to minimize color and luminance errors perceived on the display device, achieving a balance between color accuracy and luminance accuracy. The samples mapped to individual pixel sub-components are ultimately used to generate luminous intensity values for the displayed image.
Career Highlights
Throughout his career, Donald P. Mitchell has worked with prominent organizations, including Microsoft Technology Licensing, LLC and Leland Stanford Junior University. His experience in these institutions has contributed to his expertise in image processing technologies.
Collaborations
Some of his notable coworkers include John Carlton Platt and Steven Mark Drucker, who have collaborated with him on various projects.
Conclusion
Donald P. Mitchell's innovative work in image data processing has led to significant advancements in display technology. His patents reflect a deep understanding of the complexities involved in rendering images accurately and efficiently.
Inventor’s Patent Attorneys refers to legal professionals with specialized expertise in representing inventors throughout the patent process. These attorneys assist inventors in navigating the complexities of patent law, including filing patent applications, conducting patent searches, and protecting intellectual property rights. They play a crucial role in helping inventors secure patents for their innovative creations.