Koji Hayashi

This inventor holds 17 USPTO granted patents, primarily in Data Recording Technology. Top assignee: Sanyo Electric Co., Ltd.. Active years: 1995-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koji Hayashi. Retrieved from https://idiyas.com/inventor/koji-hayashi-lcvbgwc5

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

USPTO Granted Patents = 17

% Patents Active = 76.5

Average Co-Inventor Count = 1.4

ph-index = 6

Forward Citations = 93(Granted Patents)

Location History:

Hashima, JP (1995 - 2007)
Gifu, JP (2007)

Company Filing History:

17 out of 8,782

Sanyo Electric Co., Ltd.

patents

Years Active: 1995-2007

Loading Chart...

Areas of Expertise:

Data Recorder

Optical Disc

Pulse Width Control

D/A Converter

Bit Compression

Delay Circuit

Digital-to-Analog

Signal Processing

Controller

17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7236436 - Controller for data recorder (2007-06-26),

2. 7196987 - Controller for data recorder (2007-03-27),

3. 7177252 - Method and apparatus for recording data on an optical disc (2007-02-13),

4. 7170331 - Delay circuit (2007-01-30),

5. 7167427 - Data recorder (2007-01-23),

6. 7149167 - Data recorder (2006-12-12),

7. 7149165 - Controller for data recorder (2006-12-12),

8. 7120710 - Controller for data recorder (2006-10-10),

9. 7106675 - Data recorder (2006-09-12),

10. 7099246 - Method and apparatus for recording data on an optical disc with restarting writing of data after data recording interruption (2006-08-29),

11. 6992957 - Controller of data recorder (2006-01-31),

12. 6594213 - Data recorder (2003-07-15),

13. 6567490 - Pulse signal delay circuit (2003-05-20),

14. 6493305 - Pulse width control circuit (2002-12-10),

15. 6487616 - Controller for data recorder (2002-11-26),

Title: Koji Hayashi: Innovator in Data Recording Technology

Introduction

Koji Hayashi is a prominent inventor based in Hashima, Japan. He has made significant contributions to the field of data recording technology, holding a total of 17 patents. His innovative work has paved the way for advancements in how data is written and read from recording mediums.

Latest Patents

One of Hayashi's latest patents is a controller for data recorders. This controller is designed to manage interruptions and restarts when writing data to a recording medium by emitting a laser beam against the medium. It effectively prevents buffer underrun errors, which can disrupt data integrity. The controller operates by emitting a high power laser beam during data writing and a low power beam during data reading. When there is a risk of a buffer underrun error, the writing process is interrupted. Upon resuming, the laser beam is adjusted from the read level to the write level before reaching the interruption point, ensuring that the necessary power level is achieved for successful data writing.

Career Highlights

Koji Hayashi is currently employed at Sanyo Electric Co., Ltd., where he continues to innovate in the field of data recording technology. His work has been instrumental in enhancing the reliability and efficiency of data storage solutions.

Collaborations

Hayashi has collaborated with notable colleagues, including Akira Tsukihashi and Yasushi Hanamoto. Their combined expertise has contributed to the development of cutting-edge technologies in their field.

Conclusion

Koji Hayashi's contributions to data recording technology exemplify the spirit of innovation. His patents reflect a deep understanding of the challenges in data management and a commitment to finding effective solutions. His work continues to influence the industry and improve data recording practices.

Profile summary based on public USPTO records.

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]