Motor vehicle with a central locking unit and a remote control f

Details Motor vehicle with a central locking unit and a remote control f Motor vehicle with a central locking unit and a remote control f

1997-11-06

1999-04-27

Gaffin, Jeffrey

Electrical transmission or interconnection systems

Vehicle mounted systems

Automobile

307 102, 307 104, 34082569, 34082572, 34082534, G06F 704

Patent

active

058982302

ABSTRACT:
A central locking system of a motor vehicle is provided with communication between the transmitter of the remote actuation unit and the receiver of the central locking system in a frequency-hopping spread spectrum mode where M channels are used of a total of N channels of the spread spectrum frequency band chosen, for example, an I/S/M band of 433 MHz to 435 MHz. Switching is effected from one channel to another channel of the N channels in accordance with a timing pattern in which the timing interval I.sub.zs is greater than the duration .DELTA.t of the communication protocol.

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"Kommunikation Mit Bandpreiztechnik"; John Fakatselis et al; electronik industrie 2, 1996, pp. 33 to 38.

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