Hoyeol Cho

Title: Hoyeol Cho: Innovator in Memory Circuit Technology

Introduction

Hoyeol Cho is a prominent inventor based in Palo Alto, California, known for his significant contributions to memory circuit technology. With a total of 13 patents to his name, Cho has made remarkable advancements in the field of memory devices, particularly in improving their functionality and efficiency.

Latest Patents

Among his latest patents, Cho has developed a memory bitcell with column select functionality. This innovation includes systems and methods that enhance the column selection capabilities of memory circuits. The design incorporates additional series pass gates, such as junction sharing transistors, which are coupled with a column select signal to create an integrated column select port. This advancement allows each bitcell to achieve column select functionality while improving area and power performance compared to conventional methods. However, the added column select port can introduce challenges such as increased area and column select load, which may affect writability due to charge-sharing effects. Cho's work addresses these issues by sharing intermediate nodes among adjacent bitcells and incorporating additional ground-connected transistors to enhance writability and read noise margin.

Another notable patent involves memory power selection using local voltage regulators. This invention describes systems and methods that utilize a local voltage regulator embedded within a memory sub-array. The memory device includes a local voltage regulator that generates a local voltage for powering the memory sub-array. Additionally, switch logic is integrated to select between the local voltage and a source voltage provided by a host device, optimizing the power management of the memory device.

Career Highlights

Hoyeol Cho has worked with notable companies such as Oracle International Corporation and Oracle America, Inc. His experience in these organizations has contributed to his expertise in memory technology and innovation.

Collaborations

Throughout his career, Cho has collaborated with talented individuals, including Ioannis Orginos and Jinho Kwack. These partnerships have fostered a creative environment that has led to significant advancements in memory circuit technology.

Conclusion

Hoyeol Cho's innovative work in memory circuit technology has made a lasting impact on the field. His patents reflect a commitment to enhancing the performance and efficiency of memory devices, showcasing his role as a leading inventor in this domain.