Daisuke Ban

Title: Daisuke Ban: Innovator in Processor Technology

Introduction

Daisuke Ban is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of processor technology, holding 2 patents that showcase his innovative approach to enhancing processor functionality.

Latest Patents

One of his latest patents is titled "Processor having cache purge controller." This invention addresses the issue of malfunctions that can occur during mode changes in a processor. The design includes a circuit that refers to the result of decoding information or issuing an instruction when a write operation is performed on a register. It outputs a purge signal if the result corresponds to a mode switching signal. This mechanism ensures that when a mode switching signal is written to the register, the valid bit of prefetched cache data is turned off, preventing incorrect decoding of data in different modes.

Another significant patent is simply titled "Processor." This invention allows a processor to support a complex instruction set without major hardware modifications. It achieves this by adding a second instruction decoder that can decode expanded instruction codes and issue one instruction per cycle. The design includes a counter to track the number of instructions issued and an instruction selection unit to choose between the first and second instruction decoders based on the type of instruction being executed.

Career Highlights

Daisuke Ban is currently employed at Fujitsu Corporation, where he continues to develop innovative solutions in processor technology. His work has contributed to advancements in how processors handle complex instructions and mode changes.

Collaborations

Daisuke has collaborated with talented coworkers such as Takumi Takeno and Kenichi Nabeya, further enhancing the innovative environment at Fujitsu Corporation.

Conclusion

Daisuke Ban's contributions to processor technology through his patents demonstrate his commitment to innovation and excellence in the field. His work not only addresses current challenges but also paves the way for future advancements in processor design.