EP 1226661 A1 20020731 - A SYSTEM AND METHOD FOR MONITORING A WIRETAP
Title (en)
A SYSTEM AND METHOD FOR MONITORING A WIRETAP
Title (de)
SYSTEM UND VERFAHREN ZUR ÜBERWACHUNG EINER LEITUNGSANZAPFUNG
Title (fr)
SYSTEME ET PROCEDE DE CONTROLE D'ECOUTE CLANDESTINE
Publication
Application
Priority
- KR 0001132 W 20001010
- KR 19990049015 A 19991105
Abstract (en)
[origin: WO0133734A1] The present invention relates to bugging-device detecting apparatus and method being able to detect not only a bugging device which always operates but also a VOX-type bugging device which operates only when there is sound. This detecting method acquires a frequency spectrum of detected wireless signals within target frequency band, outputs a voice sound, re-acquires a frequency spectrum of wireless signals while the voice sound is being outputted, compares the two spectrums to know whether the two spectrums are the same, and determines whether a hidden listening device is operative around based on the comparison result.
IPC 1-7
IPC 8 full level
G08B 21/00 (2006.01); G08B 25/08 (2006.01); H04B 7/00 (2006.01); H04B 17/00 (2006.01); H04K 3/00 (2006.01)
CPC (source: EP KR)
H04B 7/00 (2013.01 - KR); H04K 3/65 (2013.01 - EP); H04K 3/822 (2013.01 - EP); H04K 2203/12 (2013.01 - EP)
Citation (search report)
See references of WO 0133734A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0133734 A1 20010510; AU 7692000 A 20010514; CN 1387705 A 20021225; EP 1226661 A1 20020731; JP 2003513390 A 20030408; KR 100335513 B1 20020506; KR 20010045669 A 20010605
DOCDB simple family (application)
KR 0001132 W 20001010; AU 7692000 A 20001010; CN 00815341 A 20001010; EP 00966589 A 20001010; JP 2001535313 A 20001010; KR 19990049015 A 19991105