Toshi Takayanagi

Title: Toshi Takayanagi: Innovator in Power Management Technologies

Introduction

Toshi Takayanagi is a notable inventor based in San Jose, CA. He has made significant contributions to the field of power management technologies, holding a total of 3 patents. His work focuses on enhancing the efficiency of processors through innovative methods of instruction issue throttling and performance state transitions.

Latest Patents

One of Takayanagi's latest patents is titled "Instruction type issue throttling upon reaching threshold by adjusting counter increment amount for issued cycle and decrement amount for not issued cycle." This patent describes a system and method for reducing power consumption by managing the issue rates of selected problematic instructions. The power throttle unit within a processor maintains instruction issue counts for associated instruction types, which are chosen based on high power consumption estimates. When the issue count exceeds a threshold, the power throttle unit limits the issue rate for specific instruction types, allowing for programmable selection of these types and their associated limits.

Another significant patent is "Hardware automatic performance state transitions in system on processor sleep and wake events." This invention involves a power management unit (PMU) that automatically transitions the performance states of various performance domains in a system. The PMU can be programmed by software to control these transitions, allowing the processor to enter and exit sleep states efficiently.

Career Highlights

Toshi Takayanagi is currently employed at Apple Inc., where he continues to develop innovative solutions in power management. His work has been instrumental in improving the performance and energy efficiency of modern processors.

Collaborations

Throughout his career, Takayanagi has collaborated with talented individuals such as Jung Wook Cho and Josh P De Cesare. These collaborations have contributed to the advancement of technologies in the field.

Conclusion

Toshi Takayanagi is a prominent inventor whose work in power management technologies has led to significant advancements in processor efficiency. His innovative patents reflect his commitment to enhancing the performance of computing systems.