Patents by Inventor Takeda Toru

Takeda Toru has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Driving apparatus for floating-type magnetic head
    Patent number: 5663846
    Abstract: A loading and unloading device for loading and unloading a head slider has an actuator driver circuit 11 for driving an actuator 3 with pulses. A counterelectromotive force generated by a voice coil of the actuator is detected when the pulses are off, and fed back to the actuator driver circuit 11 to enable the actuator driver circuit 11 to control the position and speed of the actuator. The speed at which the head slider is loaded and unloaded can thus be controlled into a desired value to minimize the danger of collision between a head and a disk.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: September 2, 1997
    Assignee: Sony Corporation
    Inventors: Dai Masuoka, Takeda Toru