Company Filing History:

15 out of 8,781

Sanyo Electric Co., Ltd.

patents

Kabushiki Kaisha Toshiba

where one patent can have more than one assignee

Years Active: 1994-2013

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15 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 8391113 - Optical disc for tuple-speed recording and optical disc device for tuple-speed recording (2013-03-05),

2. 7643394 - Optical disk, optical disk recording method, and optical disk recording apparatus (2010-01-05),

3. 7492697 - Optical disc recording method and apparatus (2009-02-17),

4. 7478306 - Method of detecting error location, and error detection circuit, error correction circuit, and reproducing apparatus using the method (2009-01-13),

5. 7345974 - Optical recording/reproducing apparatus (2008-03-18),

6. 6542865 - Method and apparatus for subband coding, allocating available frame bits based on changable subband weights (2003-04-01),

7. 6510490 - Write cache circuit, recording apparatus with write cache circuit, and write cache method (2003-01-21),

8. 6434686 - Address generating circuit (2002-08-13),

9. 6345285 - Logarithmic value calculation circuit (2002-02-05),

10. 6308194 - Discrete cosine transform circuit and operation method thereof (2001-10-23),

11. 6119260 - Decoder for executing error correction and error detection in parallel (2000-09-12),

12. 6069855 - Synchronous circuit and optical disk reproduction device capable of (2000-05-30),

13. 5402406 - Read only digital audio information recording medium and digital dubbing (1995-03-28),

14. 5331617 - Audio data recording/reproduction device having digital high speed (1994-07-19),

15. 5323367 - Reproduction or recording device having a pause function (1994-06-21),

Title: The Innovations of Masato Fuma: A Pioneer in Optical Disc Technology

Introduction: Masato Fuma, an accomplished inventor from Ichinomiya, Japan, has made significant contributions to the field of optical disc technology. With a remarkable portfolio of 15 patents, Fuma’s work has been instrumental in advancing the capabilities of optical storage mediums.

Latest Patents: Among his latest innovations are two notable patents focusing on tuple-speed recording for optical discs. The first patent details an optical disc designed with a read-only system lead-in area and a recordable data area. This innovation ensures that disc boundary information is recorded on the system lead-in area, which corresponds to each tuple speed. Additionally, the optical disc device evaluates the current recording position against the user's instructed tuple speed to determine the optimal speed for recording. The second patent outlines an advanced optical disk recording method where an extended management data zone is created within the data zone, enhancing the management capabilities for recorded data.

Career Highlights: Masato Fuma has held positions at several prominent companies, including Sanyo Electric Co., Ltd. and NEC Corporation. His roles at these organizations have allowed him to collaborate with top professionals and refine his expertise in optical technologies, contributing significantly to his impressive patent portfolio.

Collaborations: Throughout his career, Fuma has worked with distinguished colleagues, including Miyuki Okamoto and Nagatoshi Sugihara. Their collaborative efforts have led to innovative solutions and advancements in the optical disc sector, showcasing the strength of teamwork in scientific and technological exploration.

Conclusion: Masato Fuma's contributions to optical disc technology exemplify the spirit of innovation and the impact inventors can have on creating advanced solutions. With a strong track record of patents and collaborations, Fuma continues to inspire future generations of inventors in the technology landscape. His work not only enhances the functionality of optical discs but also paves the way for ongoing advancements in data storage and management.

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