发明名称 |
AUDIO CONTROL CIRCUIT FOR A COMPUTER SYSTEM HAVING AN ENERGY-SAVING FEATURE |
摘要 |
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.
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申请公布号 |
CA2197142(A1) |
申请公布日期 |
1998.08.10 |
申请号 |
CA19972197142 |
申请日期 |
1997.02.10 |
申请人 |
CHUNTEX ELECTRONIC CO., LTD. |
发明人 |
KANG, CHANG-LUNG |
分类号 |
G06F3/16;(IPC1-7):G06F3/16 |
主分类号 |
G06F3/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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