Company Filing History:
2 out of 80 
2 out of 6 
1 out of 2 Years Active: 2003-2012
Title: The Innovative Contributions of Edmund Cheung
Introduction
Edmund Cheung is a notable inventor based in Palo Alto, California, recognized for his significant contributions to the field of graphics technology. With a total of six patents to his name, Cheung has made strides in developing efficient systems for battery-powered devices.
Latest Patents
One of his latest patents is titled "Single-block virtual frame buffer translated to multiple physical blocks for multi-block display refresh generator." This innovation involves a graphics controller for a System-On-a-Chip (SoC) that enables reduced-power display modes for battery-operated devices. The microprocessor writes to a frame buffer that is a single, contiguous address block in virtual memory. A memory management unit (MMU) translates the frame-buffer address to multiple physical blocks. The graphics controller fetches pixels from these multiple physical blocks, which include a block in on-chip memory and a block in external memory. In low-power mode, pixels are fetched only from the lower-power on-chip memory, avoiding the higher-power external memory. A smaller display window is defined, and pixels outside this window are replaced by dummy data, eliminating unnecessary external-memory fetches. This smaller display window is situated within the first block in the on-chip memory, allowing status and other information to be displayed during standby modes, while a full-screen of data is shown in full-power modes.
Career Highlights
Throughout his career, Cheung has worked with several companies, including Neomagic Corporation and Faust Communications, LLC. His experience in these organizations has contributed to his expertise in graphics technology and system design.
Collaborations
Some of his notable coworkers include Takatoshi Ishii and Otto Sponring, who have collaborated with him on various projects, enhancing the innovation landscape in their respective fields.
Conclusion
Edmund Cheung's work exemplifies the spirit of innovation in technology, particularly in the realm of graphics systems for battery-powered devices. His patents reflect a commitment to improving efficiency and performance in modern electronics.