Failure detection apparatus, audio input/output module, emergency notification module, and failure detection method
US10659895B2 · kind B2 · utility
1Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2018 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Aug 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R29/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A failure detection apparatus includes: an output portion that outputs from an audio output device a confirmation signal having a frequency in a band other than the audible band; an input portion to which an input signal is inputted from an audio input device; and a failure detection portion that detects whether the audio output device and the audio input device are operating normally on the basis of the confirmation signal and the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.