Pickup device
AssigneesPioneer Corporation, Yasuo Cho
InventorsAtsushi Onoe, Yasuo Cho
Life of this patent
Estimating the term…
Abstract
An example pickup device is provided with: an arm; a gimbal holding device disposed on one end portion of the arm; a gimbal held by the gimbal holding device with a probe set in its center portion; and a motor of rotational type for rotating the arm around a rotating shaft. The probe, which is disposed on one end of the arm, is rotated in the radial direction of a dielectric recording medium by the rotation of the motor, causing accurate and quick tracking control and track access control.
Claims13
A pickup device for a dielectric recording/reproducing apparatus using a dielectric material as a recording medium, comprising:
- a first electrode for applying an electric field to the dielectric material;
- an electrode holding member for holding the first electrode;
- an arm portion equipped with the electrode holding member, wherein the electrode holding member cpmrises a conductive member and is mounted on one end of the arm portion via an insulating member;
- a rotating mechanism for rotating the arm portion;
- and
- a second electrode for returning a high-frequency electric field applied from the first electrode to the dielectric material of the recording medium, the second electrode being placed on a surface of the insulating member facing the recording medium.
A pickup device for a dielectric recording/reproducing apparatus using a dielectric material as a recording medium comprising:
- a first electrode for applying an electric field to the dielectric material;
- an electrode holding member for holding the first electrode;
- an arm portion equipped with the electrode holding member;
- a rotating mechanism for rotating the arm portion;
- and
- a second electrode for returning a high-frequency electric field applied from the first electrode to the dielectric material of the recording medium, the second electrode being placed around the electrode holding member,
- wherein the electrode holding member comprises an insulating member.
A pickup device for a dielectric recording/reproducing apparatus using a dielectric material as a recording medium, comprising:
- a first electrode for applying an electric field to the dielectric material;
- an electrode holding member for holding the first electrode;
- an arm portion equipped with the electrode holding member;
- a rotating mechanism for rotating the arm portion;
- an inductor which forms a resonance circuit with a capacitance of the dielectric material of the recording medium just under the first electrode;
- and
- an oscillator which oscillates at a resonance frequency of the resonance circuit,
- wherein the inductor and the oscillator are placed in the vicinity of the first electrode.
A pickup device for a dielectric recording/reproducing apparatus using a dielectric material as a recording medium, comprising:
- a first electrode for applying an electric field to the dielectric material;
- an electrode holding member for holding the first electrode;
- an arm portion equipped with the electrode holding member;
- a rotating mechanism for rotating the arm portion;
- and
- an oscillator, wherein the first electrode is placed at one end of the arm portion, the oscillator is placed at another end of the arm portion, and a rotating shaft of the rotating mechanism is located between the first electrode and the oscillator.
A pickup device for a dielectric recording/reproducing apparatus using a dielectric material as a recording medium, comprising:
- a first electrode for applying an electric field to the dielectric material;
- an electrode holding member for holding the first electrode;
- an arm portion equipped with the electrode holding member;
- a rotating mechanism for rotating the arm portion;
- and
- a weight, wherein the first electrode is placed at one end of the arm portion, the weight is placed at another end of the arm portion, and a rotating shaft of the rotating mechanism is located between the first electrode and the weight.
A pickup device for a dielectric recording/reproducing apparatus using a dielectric material as a recording medium, comprising:
- a first electrode for applying an electric field to the dielectric material;
- an electrode holding member for holding the first electrode;
- an arm portion equipped with the electrode holding member;
- and
- a rotating mechanism for rotating the arm portion;
- wherein said electric holding member has a sloping surface sloping with respect to a surface parallel to a surface of the recording medium, the sloping surface is located at a portion facing a moving direction of the recording medium.
Dependencies are inferred from the claim text.