The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 1980
Filed:
Sep. 19, 1978
Shizuo Inaba, Tokorozawa, JP;
Pioneer Electronic Corporation, Tokyo, JP;
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.