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:
Jan. 22, 1985
Filed:
Sep. 09, 1982
Yoshiyo Wada, Yokohama, JP;
Hideaki Takehara, Fujisawa, JP;
Abstract
A circuit arrangement comprises a first delay circuit which is responsive to the leading edge of a command signal to generate a first signal a delay time after the occurrence of the leading edge and a second delay circuit which is responsive to the trailing edge of the command signal to generate a second signal a delay time after the occurrence of the trailing edge. A stylus control solenoid responds to the leading edge of the command signal for lowering the stylus into slidable contact with the surface of a capacitance disc record and further responds to the second signal for lifting the stylus from the record. A high frequency source is arranged to respond to the first signal by generating high frequency energy for application to the electrode of a capacitance detection stylus and further responds to the trailing edge of the command signal.