This inventor holds 2 USPTO granted patents. Top assignees: Intel Corporation, Medtronic, Inc.. Active years: 1989-1995.
Company Filing History:
Years Active: 1989-1995
Title: DeWitt Ong: Innovator in Signal Processing and ROM Security
Introduction
DeWitt Ong is a notable inventor based in Tempe, AZ, who has made significant contributions to the fields of signal processing and integrated circuit security. With a total of 2 patents, Ong has developed innovative technologies that enhance the performance and security of electronic devices.
Latest Patents
Ong's latest patents include a dual mode track and hold driver for active LCDs. This invention features a track and hold signal processing system capable of driving 256 gray scale active matrix LCD displays at speeds limited only by the electrical characteristics of the display. The system's quiescent power dissipation is substantially lower than that of known track and hold drivers, thanks to the separation of the tracking circuit from the hold circuit, which optimizes the tracking function. Another significant patent is the architecture modification for improved ROM security. This technique modifies a ROM mask to prevent external access to the internal memory of an integrated circuit device. By altering patterns in the ROM mask, components of a driver circuit can be implanted, which disables the driver circuits and prevents control signals from allowing external access to internal memory, thereby enabling copy protection.
Career Highlights
Throughout his career, Ong has worked with prominent companies such as Medtronic, Inc. and Intel Corporation. His experience in these organizations has contributed to his expertise in developing advanced technologies.
Collaborations
Some of Ong's notable coworkers include Scott M. Rider and Richard Alexander Erhart. Their collaboration has likely fostered an environment of innovation and creativity in their respective projects.
Conclusion
DeWitt Ong's contributions to signal processing and ROM security demonstrate his commitment to advancing technology. His innovative patents reflect a deep understanding of electronic systems and their security needs.