Police radar warning receiver with auto-mute function
US5164729A · kind A · utility
34Cited by
30References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1990 |
| Grant date | Nov 17, 1992 |
| Priority date | — |
| Expiry date | Oct 5, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/022
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A police radar warning receiver includes an auto-mute feature by which a driver may be alerted to the presence of police radar but without the annoyance of an unnecessarily prolonged audible alarm. To this end, upon detection of the police radar signal, an audible alarm begins to beep at a selected intensity and at a beep rate corresponding to the strength of the signal. A predetermined time and/or a predetermined number of beeps after detection of the police radar signal, the intensity of the audible alarm is automatically reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.