FI103237B1 - Menetelmä ja laite signaalitietojen ulkoisen detektoinnin estämiseksi - Google Patents

Menetelmä ja laite signaalitietojen ulkoisen detektoinnin estämiseksi

Info

Publication number
FI103237B1
FI103237B1 FI913577A FI913577A FI103237B1 FI 103237 B1 FI103237 B1 FI 103237B1 FI 913577 A FI913577 A FI 913577A FI 913577 A FI913577 A FI 913577A FI 103237 B1 FI103237 B1 FI 103237B1
Authority
FI
Finland
Prior art keywords
signal
pct
pseudo
sequences
video
Prior art date
Application number
FI913577A
Other languages
English (en)
Finnish (fi)
Swedish (sv)
Other versions
FI103237B (fi
FI913577A0 (fi
Inventor
Per Lindholm
Original Assignee
Cominvest Res Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cominvest Res Ab filed Critical Cominvest Res Ab
Publication of FI913577A0 publication Critical patent/FI913577A0/fi
Application granted granted Critical
Publication of FI103237B publication Critical patent/FI103237B/fi
Publication of FI103237B1 publication Critical patent/FI103237B1/fi

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/40—Jamming having variable characteristics
    • H04K3/42—Jamming having variable characteristics characterized by the control of the jamming frequency or wavelength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K3/00—Jamming of communication; Counter-measures
    • H04K3/80—Jamming or countermeasure characterized by its function
    • H04K3/82—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection
    • H04K3/825—Jamming or countermeasure characterized by its function related to preventing surveillance, interception or detection by jamming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/10—Jamming or countermeasure used for a particular application
    • H04K2203/14—Jamming or countermeasure used for a particular application for the transfer of light or images, e.g. for video-surveillance, for television or from a computer screen
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K2203/00—Jamming of communication; Countermeasures
    • H04K2203/30—Jamming or countermeasure characterized by the infrastructure components
    • H04K2203/32—Jamming or countermeasure characterized by the infrastructure components including a particular configuration of antennas

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Burglar Alarm Systems (AREA)
  • Television Systems (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Liquid Developers In Electrophotography (AREA)
FI913577A 1989-01-30 1991-07-26 Menetelmä ja laite signaalitietojen ulkoisen detektoinnin estämiseksi FI103237B1 (fi)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE8900288 1989-01-26
SE8900288A SE462935B (sv) 1989-01-30 1989-01-30 Saett och anordning foer hindrande av extern detektering av signalinformation
PCT/SE1990/000051 WO1990009067A1 (fr) 1989-01-26 1990-01-24 Procede et appareil servant a empecher la detection externe de signaux d'informations
SE9000051 1990-01-24

Publications (3)

Publication Number Publication Date
FI913577A0 FI913577A0 (fi) 1991-07-26
FI103237B FI103237B (fi) 1999-05-14
FI103237B1 true FI103237B1 (fi) 1999-05-14

Family

ID=20374874

Family Applications (1)

Application Number Title Priority Date Filing Date
FI913577A FI103237B1 (fi) 1989-01-30 1991-07-26 Menetelmä ja laite signaalitietojen ulkoisen detektoinnin estämiseksi

Country Status (11)

Country Link
US (1) US5157725A (fr)
EP (1) EP0455699B1 (fr)
JP (1) JP3148231B2 (fr)
AT (1) ATE132308T1 (fr)
AU (2) AU635915B2 (fr)
CA (1) CA2045619C (fr)
DE (1) DE69024483T2 (fr)
FI (1) FI103237B1 (fr)
NO (1) NO179469C (fr)
SE (1) SE462935B (fr)
WO (1) WO1990009067A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5351292A (en) * 1989-01-26 1994-09-27 Cominvest Research Ab Method and apparatus for preventing external detection of signal information
SE500276C2 (sv) * 1991-06-24 1994-05-24 Shield Research In Sweden Ab Förfarande och anordning för att förhindra extern detektering av signalinformation
IT1259383B (it) * 1992-04-02 1996-03-12 Dispositivo di protezione per computer e simili
US7587044B2 (en) 1998-01-02 2009-09-08 Cryptography Research, Inc. Differential power analysis method and apparatus
DE69840782D1 (de) 1998-01-02 2009-06-04 Cryptography Res Inc Leckresistentes kryptographisches Verfahren und Vorrichtung
JP4097773B2 (ja) * 1998-04-20 2008-06-11 オリンパス株式会社 デジタル画像編集システム
IL139935A (en) 1998-06-03 2005-06-19 Cryptography Res Inc Des and other cryptographic processes with leak minimization for smartcards and other cryptosystems
CA2334597C (fr) 1998-07-02 2007-09-04 Cryptography Research, Inc. Mise a jour a cle de chiffrage indexee a resistance de fuite
US6804565B2 (en) * 2001-05-07 2004-10-12 Harman International Industries, Incorporated Data-driven software architecture for digital sound processing and equalization
JP4629035B2 (ja) * 2004-05-24 2011-02-09 日本電信電話株式会社 情報漏洩防止装置及び情報漏洩防止方法
US9477141B2 (en) 2011-08-31 2016-10-25 Cablecam, Llc Aerial movement system having multiple payloads
US10469790B2 (en) * 2011-08-31 2019-11-05 Cablecam, Llc Control system and method for an aerially moved payload system
US9337949B2 (en) 2011-08-31 2016-05-10 Cablecam, Llc Control system for an aerially moved payload

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH623271A5 (fr) * 1977-11-15 1981-05-29 Hasler Ag
DE3127843A1 (de) * 1981-07-15 1983-05-26 AEG-Telefunken Nachrichtentechnik GmbH, 7150 Backnang Verfahren zur verhinderung von "kompromittierender abstrahlung" bei der verarbeitung und uebertragung geheimer dateninformationen
GB8608172D0 (en) * 1986-04-03 1986-05-08 Walker S M Computer security devices
NO165698C (no) * 1988-07-05 1991-03-20 System Sikkerhet As System for beskyttelse mot avlytting av digitalt utstyr.

Also Published As

Publication number Publication date
SE8900288D0 (sv) 1989-01-30
JP3148231B2 (ja) 2001-03-19
CA2045619A1 (fr) 1990-07-27
NO912830L (no) 1991-09-25
AU635915B2 (en) 1993-04-08
JPH04504639A (ja) 1992-08-13
CA2045619C (fr) 2000-07-25
WO1990009067A1 (fr) 1990-08-09
ATE132308T1 (de) 1996-01-15
US5157725A (en) 1992-10-20
FI103237B (fi) 1999-05-14
SE8900288L (sv) 1990-07-27
AU648455B2 (en) 1994-04-21
DE69024483T2 (de) 1996-07-25
EP0455699A1 (fr) 1991-11-13
NO179469B (no) 1996-07-01
AU3217193A (en) 1993-03-25
EP0455699B1 (fr) 1995-12-27
AU4967590A (en) 1990-08-24
DE69024483D1 (de) 1996-02-08
FI913577A0 (fi) 1991-07-26
NO179469C (no) 1996-10-09
NO912830D0 (no) 1991-07-19
SE462935B (sv) 1990-09-17

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Legal Events

Date Code Title Description
MA Patent expired