Koutarou Tagawa

Title: Koutarou Tagawa: Innovator in Microcontroller Technology

Introduction

Koutarou Tagawa is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of microcontroller technology, holding a total of 5 patents. His work focuses on enhancing the functionality and efficiency of microcontrollers, particularly through the integration of debug support units.

Latest Patents

One of Tagawa's latest inventions is a microcontroller with a debug support unit. This innovative microcontroller comprises a CPU, a bus controller, an instruction address bus of a first bit number, and an instruction code bus of a second bit number. These components connect the CPU and bus controller, while the debug support unit is linked to both the instruction address bus and instruction code bus. This unit connects to an external in-circuit emulator via a tool bus of a smaller bit number and a bus-status signal line that reports the status of the tool bus. The debug support unit features a data output circuit that outputs the converted instruction address serially to the tool bus when branch information indicates a branch. Conversely, it outputs a branchless signal when there is no branch.

Another notable patent is a microcomputer with a debug supporting function. In this design, the debug target circuit and the debugging circuit, which includes an interface module to the in-circuit emulator, are independently supplied with drive power. The drive power is supplied to both circuits, allowing various debug information to be set by the in-circuit emulator. After this, the supply of drive power to the debug target circuit is halted. While the debug information is retained in the debugging circuit, the power supply to the debug target circuit is restarted, enabling debugging based on the held information.

Career Highlights

Koutarou Tagawa is currently employed at Fujitsu Corporation, where he continues to innovate in the field of microcontroller technology. His work has been instrumental in advancing the capabilities of microcontrollers, making them more efficient and easier to debug.

Collaborations

Tagawa has collaborated with notable coworkers, including Toshiaki Saruwatari and Kouj Arai. Their combined expertise has contributed to the successful development of various technologies within the company.

Conclusion

Koutarou Tagawa is a distinguished inventor whose work in microcontroller technology has led to significant advancements in the field. His innovative patents