Remote convience system and method with proximity-based disablement RFO preventing inadvertent function activation
US6191703A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1998 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Mar 31, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R25/24
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A remote convenience system (10) of a vehicle (12) allows remote control operation of one or more vehicle functions (e.g., lock or unlock of vehicle doors). A portable transmitter (14) of the system (10) transmits a signal (40), having a remote convenience function request, to a receiver (46). In response to the signal (40), the receiver (46) causes performance of the requested remote convenience function. The transmitter (14) is connected with a key (16) that is used for the vehicle (12). Preferably, the key (16) is an ignition key and the transmitter (14) is integrated into the key. The key (16) has a transponder (58) that is interrogated by an interrogation coil (62) to provide a code stored within the transponder. An immobilizer control (60) is operatively connected with the coil (62) and also an electronic engine control (68). Operation of the vehicle (12) is only permitted if the transponder provides the proper code. The receiver (46) is also operatively connected to the immobilizer control (60), and when the key (16) is being inserted into an ignition switch (64), the remote convenience functions are disabled to prevent inadvertent performance of the functions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.