G - Physics – 06 – F
Patent
G - Physics
06
F
G06F 3/16 (2006.01)
Patent
CA 2197142
To allow sounds to be output by the audio amplifier of a multi-media computer system during periods of CPU inactivity and display screen blanking, a switch is added to the control circuit of the audio amplifier which overrides the energy-saving shut-down program which would normally be activated to cut-off power to both the monitor display screen and the audio amplifier. The switch is in the form of a transistor whose control electrode is connected to both the power supply and to the CPU, such that the transistor can be turned on either by a signal from the main power circuit or by a keyboard activated signal from the CPU's microprocessor, the collector of the transistor being connected to the audio input terminal of the audio amplifier.
Afin de permettre la production de sons par l'amplificateur audio d'un système informatique multimédia pendant les périodes d'inactivité du CPU et de suppression du faisceau de l'écran, un commutateur est ajouté au circuit de commande de l'amplificateur audio pour neutraliser le programme économiseur d'énergie, qui serait normalement activé afin de mettre hors tension l'écran de surveillance et l'amplificateur audio. Le commutateur a la forme d'un transistor dont l'électrode de commande est connectée à l'alimentation et au CPU, de sorte que le transistor puisse être débloqué soit par un signal provenant du circuit d'alimentation principal, soit par un signal activé au clavier à partir du microprocesseur du CPU, le collecteur du transistor étant connecté à la borne d'entrée audio de l'amplificateur audio.
Chuntex Electronic Co. Ltd.
Fetherstonhaugh & Co.
LandOfFree
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