METHOD FOR PROTECTION OF INFORMATION WHICH IS TRANSMITTED THROUGH WIRE COMMUNICATION CHANNELS AND DEVICE WHICH IMPLEMENTS SAID METHOD

摘要

FIELD: communication equipment, in particular, confidential information transmission. SUBSTANCE: method involves noise protection of transmission line in voice range by means of two-channel adaptive filter which receives two signals information and reference ones and subtracts reference signal from information one. Information signal is mix of transmitted signal and noise generator, reference signal is transmitted by noise generator. Corresponding device has noise generator 1 and two-channel digital adaptive filter 3. EFFECT: simplified design of information protection and processing. 2 cl, 1 dwg