Noriaki Wakabayashi

This inventor holds 16 USPTO granted patents, primarily in Positioning Systems. Top assignee: Matsushita Electric Industrial Co., Ltd.. Active years: 1978-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Noriaki Wakabayashi. Retrieved from https://idiyas.com/inventor/noriaki-wakabayashi

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

Calculating rank

USPTO Granted Patents = 16

% Patents Active = 100.0

Average Co-Inventor Count = 2.7

ph-index = 11

Forward Citations = 308(Granted Patents)

Location History:

Kadoma, JA (1978)
Osaka, JP (1994)
Hirakata, JP (1983 - 1995)

Company Filing History:

16 out of 27,375

Matsushita Electric Industrial Co., Ltd.

patents

Years Active: 1978-1995

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Areas of Expertise:

Track Position Control

Magnetic Disk

Linear Motor

Optical Disk Drive

Brushless Servomotor

Magnetic Position Detector

Temperature Control Circuit

Actuator Access Method

Two-Axis Positioning

Servo System

Recording Medium

16 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 5402287 - Resolution enhancement of absolute track position using iterative (1995-03-28),

2. 5396380 - Resolution enhancement of absolute track position using iterative (1995-03-07),

3. 5335123 - Apparatus and method for head-positioning on a rotatable recording medium (1994-08-02),

4. 5317468 - Magnetic disk having reserve servo sectors and plural reserve tracks (1994-05-31),

5. 5267144 - Access method of an actuator and control apparatus therefor (1993-11-30),

6. 5206566 - Access method of actuator and control apparatus therefor (1993-04-27),

7. 5124625 - Position control system (1992-06-23),

8. 5065263 - Track following transducer position control system for a disk storage (1991-11-12),

9. 4999558 - Position control system (1991-03-12),

10. 4725776 - Magnetic position detector using a thin film magnetoresistor element (1988-02-16),

11. 4669073 - Optical disk drive apparatus (1987-05-26),

12. 4509001 - Brushless linear servomotor (1985-04-02),

13. 4507598 - Two-axis positioning system (1985-03-26),

14. 4504750 - Linear motor (1985-03-12),

15. 4370577 - Linear motor (1983-01-25),

Title: Noriaki Wakabayashi: Innovator in Disk-Shaped Information Recording Technology

Introduction

Noriaki Wakabayashi is a prominent inventor based in Hirakata, Japan. He has made significant contributions to the field of disk-shaped information recording technology. With a total of 16 patents to his name, Wakabayashi has demonstrated a commitment to innovation and advancement in this area.

Latest Patents

Wakabayashi's latest patents focus on enhancing the resolution of absolute track positioning in disk-shaped information recording mediums. One of his notable inventions involves a head positioning apparatus that utilizes a sector-servo method. In this invention, track codes are recorded in advance to repeat every 12 tracks within the servo sectors. The head reproduces these codes, allowing for precise detection of the distance between the current head position and the target track with a resolution of 1/2⁷ of the track width. This technology enables the head to be accurately moved to the target track, ensuring optimal performance.

Another significant patent involves the recording of track codes and burst signals in the servo sectors of the disk. This method allows for the detection of the distance between the data head and the target track with a resolution of 1/2² of the track width. The data head is then controlled based on this information, enhancing the overall efficiency of the data retrieval process.

Career Highlights

Wakabayashi has spent a considerable part of his career at Matsushita Electric Industrial Co., Ltd. His work has been instrumental in developing technologies that improve the functionality and reliability of disk-shaped information recording devices. His innovative approaches have set new standards in the industry.

Collaborations

Throughout his career, Wakabayashi has collaborated with talented individuals such as Hiromi Onodera and Tsukasa Yoshiura. These collaborations have fostered a creative environment that has led to groundbreaking advancements in their field.

Conclusion

Noriaki Wakabayashi's contributions to disk-shaped information recording technology are noteworthy and impactful. His innovative patents and collaborative efforts continue to influence the industry, showcasing his dedication to advancing technology.

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]