Remote keyless entry circuit having transient pulse suppression
US7148787B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2004 |
| Grant date | Dec 12, 2006 |
| Priority date | — |
| Expiry date | Aug 2, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2009/00793
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A remote keyless entry (RKE) circuit (100) and method reduces the amount of current draw by duty cycling the RKE circuit (100) to ensure that a microcontroller (104) in the RKE circuit (100) is awakened only when needed to evaluate RF data. A total operating period for the RKE circuit (100) includes a transient period, a data monitoring period, and a sleep period. The RKE circuit (100) includes a pulse blocking circuit (109) that prevents a receiver stabilization pulse from waking up the microcontroller (104). If no data is received during the data monitoring period, the microcontroller (104) remains in a sleep mode for the remainder of the operating period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.