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:
Oct. 19, 1993
Filed:
Jul. 01, 1991
Sony Corporation, , JP;
Abstract
A recording and reproducing apparatus in which signals are recorded onto and reproduced from a magnetic tape wound around a peripheral surface of a rotary drum by magnetic heads which are attached to the peripheral surface of the rotary drum corresponding to a plurality of channels, respectively, comprises at least: a detector to detect an envelope level of a reproduced RF signal which is derived from the magnetic head every channel; a comparator to compare the detection output and a reference level and to generate a control voltage corresponding to the magnetic head every channel; a latch to store the control voltage; and a circuit to make the envelope level of the reproduction RF signal constant in accordance with a predetermined timing for supplying the control voltage.