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. 24, 1981
Filed:
May. 23, 1979
Abstract
An automatic recording level controlling circuit comprises an audio test signal oscillator, a variable loss attenuation circuit, level detecting circuitry and a control circuit for controlling the attenuation factor of the variable loss attenuation circuit in accordance with the output of the level detecting circuitry. The level of a reproduced signal corresponding to the test signal is detected to see the deviation from a reference level so that the attenuation factor of the variable loss attenuation circuit is controlled in such a manner that the level of the reproduced signal is as close to the reference level as possible.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile