发明名称 |
Method and apparatus for indicating speaker faults |
摘要 |
In an automotive radio system an amplifier is capable of detecting speaker faults. A fault signal from the amplifier is received by a microprocessor which sends a fault message to a radio display and/or stores fault data which can be accessed via a serial data link by a diagnostic tool. One embodiment of the amplifier has an output pin for outputting distortion signal, and that pin is used when distortion is not likely to also output a fault signal which reveals the presence of a fault. Another embodiment of the amplifier has a data storage register which receives data on the type of fault and the affected channel, and a data bus to send the data to the microprocessor.
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申请公布号 |
US5940518(A) |
申请公布日期 |
1999.08.17 |
申请号 |
US19970943214 |
申请日期 |
1997.10.06 |
申请人 |
DELCO ELECTRONICS CORPORATION |
发明人 |
AUGUSTYN, MICHAEL THOMAS;DOCKEMEYER, JR., JOSEPH ROBERT;DYSON, WILLIAM E.;EASLEY, J. ALEXANDER;MITCHELL, GARY K. |
分类号 |
G01R31/00;H04R3/00;H04R29/00;H04S7/00;(IPC1-7):H04R29/00 |
主分类号 |
G01R31/00 |
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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