Toshiteru Shibuya

Title: The Innovations of Toshiteru Shibuya

Introduction

Toshiteru Shibuya is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of computer technology, holding a total of 8 patents. His work focuses on enhancing the efficiency and functionality of computer systems.

Latest Patents

One of his latest patents is a "Holding mechanism for changing operation modes in a pipelined computer." This invention involves a pipelined computer that comprises multiple stages. An instruction that follows an operation mode changing instruction is held in a specific stage based on the type of the operation mode changing instruction. For instance, if the instruction follows an ICP (Instruction mode Change to Privilege) instruction, it is held in the instruction decode stage where a privilege exception is detected. Similarly, if it follows an ACS (Addressing mode Change to Secure) instruction, it is held in the address adding stage for address computation. Furthermore, if it follows an ACD (Addressing mode Change to Direct) instruction, it is held in the address translation stage for address translation. These holdings are released once the operation mode changing instruction is completed. Additionally, if the subsequent instructions are unaffected by the operation mode changing instruction, they may be controlled to avoid being held.

Another notable patent is the "Request control apparatus." This invention pertains to a controller that manages requests to memory in a computer system. It involves executing an instruction with a variable length operand and is designed for managing the main store in a page size of 2^m byte units through on-demand pairing processing. The controller includes a detector that identifies the presence of operand data on the same page by referencing the (n-m) most significant bits of the n least significant bits of an effective address. If the detector confirms the presence of operand data on the same page, the memory request is modified to eliminate unnecessary check requests.

Career Highlights

Toshiteru Shibuya is currently employed at NEC Corporation, where he continues to innovate and develop new technologies. His work has had a significant impact on the efficiency of computer systems and their operation modes.

Collaborations

He has collaborated with notable colleagues such as Syuichi Hanatani and Masanobu Akagi, contributing to various projects and advancements in technology.

Conclusion

Toshiteru Shibuya's contributions to