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For the Inventor, By the Inventor

Tokyo, Japan

Masuo Umemoto

USPTO Granted Patents = 22

Average Co-Inventor Count = 4.8

ph-index = 11

Forward Citations = 286(Granted Patents)


Location History:

  • Tokyo, JA (1976)
  • Hachioji, JP (1980)
  • Hinode, JP (1981)
  • Nishitama, JP (1987 - 1993)
  • Hinodemachi, JP (1981 - 1996)
  • Tokyo, JP (1981 - 2000)

Company Filing History:

goldMedal22 out of 42,485 
 
Hitachi, Ltd.
 patents
silverMedal8 out of 208 
 
Hitachi Denshi Kabushiki Kaisha
 patents
where one patent can have more than one assignee

Years Active: 1976-2000

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22 patents (USPTO):Explore Patents
1. 6130797 - Magnetic recorder and magnetooptical recorder (2000-10-10),
2. 5881071 - Digital write-and-read method and signal processing apparatus (1999-03-09),
3. 5786952 - Magnetic digital storage method and system wherein magnetic transition (1998-07-28),
4. 5594756 - Decision feedback equalization circuit (1997-01-14),
5. 5552940 - Method and apparatus for digital signal recording and/or reproduction (1996-09-03),
6. 5247401 - Replay equalization circuit in digital image recorder (1993-09-21),
7. 4868853 - Demodulation circuit for digital modulated signal (1989-09-19),
8. 4802192 - Circuit for detecting synchronizing code (1989-01-31),
9. 4791495 - Digital signal recording and reproducing system having an interface for (1988-12-13),
10. 4775897 - Dubbing method and apparatus for digital recording reproducing apparatus (1988-10-04),
11. 4737863 - Method for distributing and recording video signals and an apparatus (1988-04-12),
12. 4700240 - Digital data playback system (1987-10-13),
13. 4698811 - Method and apparatus for generating error correction codes for digitized (1987-10-06),
14. 4661956 - Method of correcting errors of digital signals in the recording and (1987-04-28),
15. 4628297 - Code modulation system (1986-12-09),

Title: Masuo Umemoto: A Pioneer in Magnetic Recording Technologies

Introduction: Masuo Umemoto, an esteemed inventor based in Tokyo, Japan, has made significant contributions to the field of magnetic recording technology. With a remarkable portfolio of 22 patents, his innovative work has influenced various advancements in data storage and processing.

Latest Patents: Umemoto's latest patents include a cutting-edge magnetic recorder and a magneto-optical recorder, which introduce a digital write-and-read method and a signal processing apparatus. This invention features a write encoder equipped with a bit distribution circuit that divides an input data block into multiple series of bit strings, thereby enhancing data processing efficiency. Additionally, the design incorporates a first coding circuit for executing predetermined coding for each data series and a second coding circuit that converts output bit series into an n-bit channel code, optimizing performance by considering inter-symbol interference.

Career Highlights: Throughout his career, Umemoto has held significant roles at renowned companies such as Hitachi, Ltd. and Hitachi Denshi Kabushiki Kaisha. His work has been instrumental in creating advanced technologies that have shaped the future of data recording.

Collaborations: Masuo Umemoto has collaborated with notable colleagues, including Yoshizumi Eto and Morishi Izumita. Their combined expertise has contributed to groundbreaking developments in the field and has facilitated the successful execution of innovative projects.

Conclusion: Masuo Umemoto stands out as a leading figure in the realm of magnetic recording technologies. His inventive spirit and collaborative endeavors have led to substantial advancements that continue to influence how data is stored and processed. As technology evolves, Umemoto's contributions will remain a pivotal reference point for aspiring inventors and professionals in the industry.

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