Automobile alarm system with noise reduction function
US5166661A · kind A · utility
6Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1991 |
| Grant date | Nov 24, 1992 |
| Priority date | — |
| Expiry date | Jun 7, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R25/1018
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An automobile alarm system with noise reduction function utilizes a built-in function in a single-chip computer, which is adapted to control the alarm system, to prevent the system being damaged by the noise, while the noise is presented in the form of high voltages, occurring during the operation of the engine. The alarm system has a current detector circuit to sense the presence of noise, and a one-shot circuit to selectively activate/inactivate the single-chip computer temporarily.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.