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:
Sep. 12, 1995
Filed:
Jan. 07, 1993
Sylvester P Porambo, Canton, MI (US);
John M Dicky, Dearborn, MI (US);
John E Whitecar, Plymouth, MI (US);
John D Cotner, Ann Arbor, MI (US);
Ford Motor Company, Dearborn, MI (US);
Abstract
A method and apparatus for determining the connection status of a communication system speaker connection to the amplifier includes digital signal processing (DSP) circuitry contained in the system receiving a clip detect feedback loop from the amplifier in response to a tone signal delivered to the amplifier from the DSP microprocessor. Preferably, the diagnosis is initiated by actuation of a predetermined plurality of controllers on a face control unit, each of which is otherwise actuated individually to control portions of the communication system. Preferably, a tone signal generated for diagnosis is generally inaudible to the human ear but the front control unit includes a display screen for illustrating the condition of the speaker-to-amplifier connection after the diagnostic function has been completed.