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. 23, 2018
Filed:
Dec. 07, 2016
Charles David Daly, Holly Hill, FL (US);
William H. Jones, Holly Hill, FL (US);
Charles David Daly, Holly Hill, FL (US);
William H. Jones, Holly Hill, FL (US);
Metra Electronics Corporation, Holly Hill, FL (US);
Abstract
An interface configured to allow desired cooperation between an OEM or aftermarket head unit and an external power amplifier. The inventive interface receives an audio input signal from the head unit. It also monitors the vehicle's CAN bus. The interface detects CAN bus commands that cause the head unit to play an audio notification signal such as a 'chime.' Upon detecting such a CAN bus command, the inventive interface selectively adjusts the output level so that the user hears the audio notification signal at an appropriate volume.