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For the Inventor, By the Inventor

Hachioji, Japan

Shigeo Nagashima

USPTO Granted Patents = 35

Average Co-Inventor Count = 3.4

ph-index = 19

Forward Citations = 1,092(Granted Patents)


Location History:

  • Hachioji, JA (1977)
  • Hachiouji, JP (1988)
  • Tokyo, JP (1990 - 1991)
  • Hachioji, JP (1980 - 2000)

Company Filing History:

goldMedal35 out of 42,485 
 
Hitachi, Ltd.
 patents

Years Active: 1977-2000

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35 patents (USPTO):Explore Patents
1. 6044450 - Processor for VLIW instruction (2000-03-28),
2. 5517619 - Interconnection network and crossbar switch for the same (1996-05-14),
3. 5465380 - Data transfer method of transferring data between programs of a same (1995-11-07),
4. 5339396 - Interconnection network and crossbar switch for the same (1994-08-16),
5. 5301322 - System for converting job/process identifiers into processor/process (1994-04-05),
6. 5295252 - Data storage device (1994-03-15),
7. 5086498 - Parallel computer with asynchronous communication facility (1992-02-04),
8. 5043873 - Method of parallel processing for avoiding competition control problems (1991-08-27),
9. 5010477 - Method and apparatus for transferring vector data between parallel (1991-04-23),
10. 4992936 - Address translation method and apparatus therefor (1991-02-12),
11. 4985827 - Computer for synchronized read and write of vector data (1991-01-15),
12. 4951193 - Parallel computer with distributed shared memories and distributed task (1990-08-21),
13. 4918686 - Data transfer network suitable for use in a parallel computer (1990-04-17),
14. 4910667 - Vector processor with vector buffer memory for read or write of vector (1990-03-20),
15. 4899273 - Circuit simulation method with clock event suppression for debugging LSI (1990-02-06),

Title: **Shigeo Nagashima: Innovator in Processor Technology**

Introduction

Shigeo Nagashima, based in Hachioji, Japan, is a renowned inventor with a track record of 35 patents. His contributions to the field of processor technology have paved new paths for advancements in computing.

Latest Patents

Nagashima's latest patents reflect his innovative thinking in processor design. One of his significant inventions is a processor for Variable Length Instruction Word (VLIW). This processor enhances efficiency by adding NOP (No Operation) instructions to individual small instructions within a long instruction. These NOP instructions are subsequently removed, allowing for the time-compression of multiple long instructions. Moreover, by grouping small instructions in each long instruction and replacing their operation codes with a group code, he successfully achieves space-compression.

Another notable invention by Nagashima is the interconnection network and crossbar switch utilized in parallel computers. This invention includes a network of processor elements designed to utilize crossbar switches for efficient routing and decoding of dimensional fields, significantly increasing the performance in multi-processor environments.

Career Highlights

Shigeo Nagashima has dedicated a substantial part of his career to Hitachi, Ltd., where he has made significant strides in the development of computational technologies. His innovative patents have not only enhanced the speed and efficiency of processing units but have also influenced the engineering approaches within the company.

Collaborations

Throughout his career, Nagashima has collaborated with notable colleagues such as Koichiro Omoda and Teruo Tanaka. These collaborations have fostered a creative environment that has led to the development of cutting-edge technologies, positioning Hitachi as a leader in processor innovation.

Conclusion

In summary, Shigeo Nagashima stands out as a significant figure in the realm of processor technology, with his multiple patents reflecting his ingenuity and commitment to advancement. His work continues to impact the industry and inspires future innovations in computing technologies.

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