Company Filing History:
1 out of 519 
1 out of 29 
1 out of 1,173 Years Active: 1983-1993
Title: Glenn T. Yoshida: Innovator in Tape Transport Systems
Introduction
Glenn T. Yoshida is a notable inventor based in Cupertino, CA, recognized for his contributions to tape transport control systems. With a total of 3 patents, his work has significantly impacted the field of audio and video technology.
Latest Patents
One of Yoshida's latest patents is a tape transport control system featuring a feedforward capstan drive. This innovative system applies a capstan drive current to the reel tension servo circuits, enhancing the rotational velocity of the reels to maintain consistent acceleration between the tape driven by the capstan and the tape being transported. The design incorporates a microprocessor that adjusts the gain of the feedforward circuit based on the instantaneous reel tape pack diameter, ensuring compatibility with various cassette sizes.
Another significant patent is the interactive rotary controller system with tactile feedback. This apparatus allows for precise control in response to operator input through a rotary knob linked to a stepper motor. The system utilizes a microprocessor to provide command signals to a braking control system, applying force to the rotor in opposition to the knob's rotation. This feature simulates mechanical detents and provides tactile feedback, enhancing user experience.
Career Highlights
Throughout his career, Glenn T. Yoshida has worked with prominent companies, including Ampex Corporation and Ampex Systems Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in tape transport technology.
Collaborations
Yoshida has collaborated with notable professionals in the field, including David N. Larkins and Thomas L. Helmers. These partnerships have contributed to the advancement of technology in the industry.
Conclusion
Glenn T. Yoshida's innovative work in tape transport systems and his collaborations with industry professionals highlight his significant contributions to technology. His patents continue to influence the development of audio and video equipment, showcasing his role as a key inventor in this field.