Sound apparatus for vehicle
US6628573B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 18, 2001 |
| Grant date | Sep 30, 2003 |
| Priority date | — |
| Expiry date | Nov 26, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/2825
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
When some failure has been detected as a result of self diagnosis in first and second sound playback units (20, 30), a nonvolatile memory (48) in a control unit (40) stores device, product, and error codes, and a predetermined pattern for informing that failure is displayed on a panel display device (12). The stored codes can be displayed on the panel display device (12) in response to predetermined first operation, and when input operation for operating the disabled unit is made at a control panel (10), the CPU 46 re-displays the predetermined pattern for informing the failure on the display device with reference to the stored codes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.