This inventor holds 4 USPTO granted patents. Top assignee: Advanced Micro Devices Corporation. Active years: 1999-2001.
Company Filing History:
Years Active: 1999-2001
Title: Innovations of John Chen
Introduction
John Chen is a notable inventor based in Cupertino, CA, who has made significant contributions to the field of memory devices. With a total of 4 patents to his name, Chen's work focuses on enhancing the functionality and efficiency of memory technologies.
Latest Patents
One of Chen's latest patents is titled "Multiple byte channel hot electron programming using ramped gate and source bias voltage." This invention describes a memory device that features multiple banks, each containing multiple memory cells. The method involves applying a bias voltage to a common source terminal and a time-varying voltage to the gates of the memory cells being programmed. The voltage can be a ramp voltage or an increasing step voltage, which helps reduce the current flowing through the cells being programmed while eliminating leakage current from non-programmed cells. Additionally, feedback control of the programming gate voltages is utilized to manage the power required for programming.
Another significant patent is the "Method for erasing flash electrically erasable programmable read-only memory." This invention includes a plurality of floating gate transistor memory cells and a power supply that generates erase pulses. A controller applies an erase pulse to all deselected wordlines, followed by an erase verify procedure to ensure that the cells are properly erased without over-erasing. This method results in a tighter threshold voltage distribution among the cells.
Career Highlights
John Chen is currently employed at Advanced Micro Devices Corporation, where he continues to innovate in the field of memory technology. His work has contributed to advancements in the efficiency and reliability of memory devices.
Collaborations
Chen has collaborated with notable coworkers, including Sameer S Haddad and Ravi S Sunkavalli, who share a commitment to advancing technology in their respective fields.
Conclusion
John Chen's contributions to memory technology through his innovative patents demonstrate his expertise and dedication to the field. His work continues to influence the development of advanced memory devices, making a lasting impact on the industry.