IDiyas

For the Inventor, By the Inventor

Yokohama, Japan

Yoshio Tokuyama

USPTO Granted Patents = 14

Average Co-Inventor Count = 1.2

ph-index = 5

Forward Citations = 61(Granted Patents)


Company Filing History:

goldMedal14 out of 2,887 
 
Victor Company of Japan, Limited
 patents

Years Active: 1981-2003

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14 patents (USPTO):Explore Patents
1. 6621981 - Video signal recording/reproducing apparatus and reproducing apparatus (2003-09-16),
2. 5771132 - Tracking error data detecting apparatus and VTR having the same apparatus (1998-06-23),
3. 5381238 - Helical scan type playback apparatus for video data recorded on magnetic (1995-01-10),
4. 5223941 - Helical scan type playback apparatus for video data recorded on magnetic (1993-06-29),
5. 4796103 - Control pulse recording circuit for dual tape speed recording and (1989-01-03),
6. 4725898 - Pseudo vertical synchronizing signal producing circuit (1988-02-16),
7. 4688114 - Drum servo circuit (1987-08-18),
8. 4680649 - Back-space editing control circuit for rotary-head magnetic tape (1987-07-14),
9. 4577243 - Control signal generating circuit for a magnetic recording and/or (1986-03-18),
10. 4521815 - Reproducing apparatus capable of performing high-speed reproduction of a (1985-06-04),
11. 4514668 - D.C. Motor driving circuit (1985-04-30),
12. 4510533 - System for reproducing a video signal in a slow motion or still picture (1985-04-09),
13. 4490755 - Recording and reproducing video signals at selectable different tape (1984-12-25),
14. 4307417 - Video signal reproducing apparatus (1981-12-22),

Title: The Innovations of Yoshio Tokuyama

Introduction

Yoshio Tokuyama is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of video technology, holding a total of 14 patents. His work has greatly influenced the development of recording and reproducing apparatuses.

Latest Patents

One of his latest patents involves a video signal recording/reproducing apparatus. This apparatus features three magnetic heads, each with distinct gap azimuth angles. The design allows for the recording of video signals in various modes, including standard, half-speed, and one-third speed. Another notable patent is a tracking error data detecting apparatus, which enhances the performance of video tape recorders by optimizing the signal levels during playback.

Career Highlights

Yoshio Tokuyama has dedicated his career to advancing video technology. He works for the Victor Company of Japan, Limited, where he continues to innovate in the field. His inventions have paved the way for improved video recording and playback systems.

Collaborations

Throughout his career, Tokuyama has collaborated with notable colleagues, including Yasuomi Namiki and Masaru Tanaka. These partnerships have contributed to the success of his projects and the advancement of technology in their field.

Conclusion

Yoshio Tokuyama's contributions to video technology through his numerous patents highlight his innovative spirit and dedication to improving recording and reproducing systems. His work continues to impact the industry significantly.

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