Tsutomu Minagawa

Title: The Innovations of Tsutomu Minagawa

Introduction

Tsutomu Minagawa is a notable inventor based in Fujisawa, Japan. He has made significant contributions to the field of technology, particularly in the development of advanced systems that enhance the efficiency of data transfer and painting pattern generation. With a total of six patents to his name, Minagawa's work reflects a deep understanding of both hardware and software integration.

Latest Patents

One of Minagawa's latest patents is a DMA controller that releases buses to external devices without the need for CPU intervention. This innovative DMA controller features an acceptance circuit, a transfer control circuit, and a release ordering circuit. The acceptance circuit is designed to receive temporary bus release requests from external devices and manage their withdrawal once the DMA controller secures a bus utility right from the CPU. The transfer control circuit interrupts ongoing bus transfer cycles and retains the bus transfer parameters, allowing for a seamless restart of the bus transfer cycle after the withdrawal is accepted. The release ordering circuit then communicates permission for temporary bus use to the external device, enabling efficient bus release without CPU mediation.

Another significant patent is a painting pattern generation system that utilizes outline data and flag data. This system comprises a first memory for storing outline data, a second memory for flag data, and an operational circuit that reads the outline data. The flag data undergoes a logical exclusive OR operation on adjacent items in the second memory, followed by an OR operation with the outline data in the first memory across all scan line directions. This process results in the generation of painted pattern data, which is then written to overlap with subsequent outline data in the first memory.

Career Highlights

Minagawa is currently employed at Kabushiki Kaisha Toshiba, where he continues to innovate and develop cutting-edge technologies. His work has not only advanced the capabilities of data transfer systems but has also contributed to the field of digital painting and design.

Collaborations

Some of Minagawa's notable coworkers include Masahide Ohhashi and Naoyuki Kai. Their collaborative efforts have further enhanced the innovative projects at Toshiba.

Conclusion

Tsutomu Minagawa's contributions to technology through his patents demonstrate his expertise and commitment to innovation. His work in DMA controllers and painting pattern generation systems showcases the potential for advancements in data management and digital design. Minagawa's ongoing efforts at Toshiba continue to influence the technological landscape.