AUTOMOTIVE AUDIO SYSTEM HAVING ACTIVE CONTROLS IN REDUCED POWER STATE

An automotive audio system is provided such that system controls, either push-button keypad or rotary switches, connect to an external interrupt pin of a microcontroller (25) capable of restarting the microcontroller from its halt or power-down state. A control activity results in the microcontrolle...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	CHAPMAN, MAX C
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION ANDCOMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION ANDCOMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THIR OWNENERGY USE ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PERFORMING OPERATIONS PHYSICS SOUND-PRODUCING DEVICES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSMISSION TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR WIRELESS COMMUNICATIONS NETWORKS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	An automotive audio system is provided such that system controls, either push-button keypad or rotary switches, connect to an external interrupt pin of a microcontroller (25) capable of restarting the microcontroller from its halt or power-down state. A control activity results in the microcontroller (25) waking up from its halt state, monitoring the system control, and recording system parameter changes in a keep-alive memory. For example, the volume of the system can be changed while the system main power and functions are off. In another embodiment, the microcontroller (25) can be woken up in order to display time-of-day information while both the audio system and the automobile are turned off. After displaying the information or changing the system parameter, the microcontroller (25) returns to its halt state in order to conserve battery power. When the audio system is fully turned on, the most recent parameter setting that was recorded is used to initialise the system. Thus, a user can ensure that audio volume is not too loud prior to powering on the audio system.