Title:
TURNTABLE REVOLUTION CONTROLLER
Document Type and Number:
Japanese Patent JPS5446005
Kind Code:
A
Abstract:
A turntable rotation control device has an electric motor reversibly rotatable. A mechanism is used for horizontally swinging a tone arm towards the inner circumference of a record by the rotation of the motor in a first direction. A second mechanism is employed for horizontally swinging the tone arm towards the outer circumference of the record by the rotation of the motor in a second direction. A first signal generating device generates a signal to rotate the motor in the first direction and a second signal generating device is employed for generating a signal to rotate the motor in the second direction a detecting circuit senses when the tone arm has been swung horizontally from the initial position at an arm rest and an OR gate circuit generates an output of a logical sum of an output signal of the first signal generating circuit and an output signal of said detecting circuit. A device circuit is driven by an output of said OR gate circuit to control the rotation of the turntable.
Inventors:
INABA SHIZUO
Application Number:
JP11293777A
Publication Date:
April 11, 1979
Filing Date:
September 20, 1977
Export Citation:
Assignee:
PIONEER ELECTRONIC CORP
International Classes:
G11B19/02; G11B3/085; G11B19/14; (IPC1-7): G11B19/14