Wireless portable radio vehicle communication system
First Claim
1. A communications system for a vehicle user, comprising a portable receiver which the vehicle user can easily carry on his or her person and a vehicle-mounted transmitter, wherein the vehicle-mounted transmitter is capable of communicating with the portable receiver, wherein coded information contained in a transmission from the vehicle-mounted transmitter may be received by the portable receiver and thus activate a function of a portable transceiver.
2 Assignments
0 Petitions
Accused Products
Abstract
A communications system for a vehicle user is provided. The system comprises a portable receiver which the vehicle user can easily carry on his or her person. The portable receiver is capable of receiving coded transmissions from a vehicle-mounted transmitter which is capable of activating a function in a portable transceiver.
66 Citations
22 Claims
- 1. A communications system for a vehicle user, comprising a portable receiver which the vehicle user can easily carry on his or her person and a vehicle-mounted transmitter, wherein the vehicle-mounted transmitter is capable of communicating with the portable receiver, wherein coded information contained in a transmission from the vehicle-mounted transmitter may be received by the portable receiver and thus activate a function of a portable transceiver.
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22. A method of activating and deactivating a function of a portable device, comprising (a) by means of a first transmitter mounted on a vehicle used by the user, transmitting repeatedly a radio signal containing coded information, (b) upon receiving of a predetermined number of radio signals containing the coded information within a predetermined time interval, activating the function, (c) upon not receiving a second predetermined number of radio signals containing the coded information within a second predetermined time interval, deactivating the function.
Specification