METHOD AND DEVICE FOR PREVENTING INTERCEPTION OF RADIO SIGNAL CODE FOR REMOTE CONTROL SYSTEM Russian patent published in 2011 - IPC B60R25/00 

FIELD: physics.

SUBSTANCE: availability of a remote control system is assumed, where said system includes a portable transmitting device and a receiving device mounted on the remote control object. During transmission of the radio signal of the portable transmitting device which consists of several serial separate code packages, a first code package is received by a transceiving device additionally mounted on the remote control device. During transmission of the first and each next code package of the portable transmitting device, noise with duration shorter than a quarter of the duration of the code package is emitted. At least during transmission of two code packages, noise is emitted such that it overlaps different parts of the code packages. During reception of code packages, the code of the code package of the portable device is detected and restored. After transmission of the radio signal of the portable transmitting device through the additional transceiving device, a radio signal containing at least one code package with the detected and restored code whose power is less than the power of the radio signal of the transmitting device, is transmitted along with false code packages.

EFFECT: low risk of interception and deciphering of a signal between a portable transmitter and receiver mounted on a protected object.

14 cl, 3 dwg