Remote keyless entry receiver having correctly matched transmitters
US6335576B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1999 |
| Grant date | Jan 1, 2002 |
| Priority date | — |
| Expiry date | Mar 27, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60R25/24
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Vehicle mounted apparatus is presented for use in a remote keyless entry system for controlling access to a vehicle. The apparatus receives access request signals from a plurality of remote transmitters wherein each received access request signal includes a security code that uniquely identifies an authorized transmitter as distinguished from other transmitters and an associated model type code that identifies a vehicle model type associated with the transmitter. A memory stores a plurality of security codes each representing an authorized transmitter and stores a model type code that identifies the vehicle's model type. Means are provided for initiating programming periods. Circuitry responds during a programming period for determining whether a received model type code matches the stored model type code and, if so, then storing the associated security code in said first memory means for subsequent evaluation during a non-programming period of a received security code with the stored security code for allowing access into the vehicle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.