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:
Feb. 18, 1992
Filed:
Mar. 29, 1989
Pioneer Electronic Corporation, Tokyo, JP;
Abstract
A height adjusting device for adjusting the height of a pickup, comprises a support mechanism for supporting the pickup on the carriage in a manner that a position of the pickup along the axis of rotation of the turntable of the optical disc player is adjustable and an adjusting device for driving the support mechanism to adjust the position of the pickup. The adjusting device generates a height position signal indicative of the position of the pickup and the support mechanism is driven in response to the magnitude of the height position signal only when the magnitude of the height position signal is greater than a predetermined level. According to the other aspect of the invention, a compensated height position signal is generated by superimposing a compensating signal indicative of the position of the optical system of the pickup relative to the housing of the pickup on the height position signal, and the support mechanism is driven in response to the magnitude of the compensated height position signal.