FI103237B1 - Sätt och anordning för hindrande av extern detektering av signalinformation - Google Patents

Sätt och anordning för hindrande av extern detektering av signalinformation

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)
Other versions
FI913577A0 (fi
FI103237B (sv
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 FI103237B1 publication Critical patent/FI103237B1/sv
Publication of FI103237B publication Critical patent/FI103237B/sv

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

  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (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)
  • Controls And Circuits For Display Device (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
FI913577A 1989-01-30 1991-07-26 Sätt och anordning för hindrande av extern detektering av signalinform ation FI103237B (sv)

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 (en) 1989-01-26 1990-01-24 Method and apparatus for preventing external detection of signal information
SE9000051 1990-01-24

Publications (3)

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

Family

ID=20374874

Family Applications (1)

Application Number Title Priority Date Filing Date
FI913577A FI103237B (sv) 1989-01-30 1991-07-26 Sätt och anordning för hindrande av extern detektering av signalinform ation

Country Status (11)

Country Link
US (1) US5157725A (sv)
EP (1) EP0455699B1 (sv)
JP (1) JP3148231B2 (sv)
AT (1) ATE132308T1 (sv)
AU (2) AU635915B2 (sv)
CA (1) CA2045619C (sv)
DE (1) DE69024483T2 (sv)
FI (1) FI103237B (sv)
NO (1) NO179469C (sv)
SE (1) SE462935B (sv)
WO (1) WO1990009067A1 (sv)

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
EP1050133B2 (en) 1998-01-02 2009-05-27 Cryptography Research Inc. Leak-resistant cryptographic method and apparatus
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
JP2002519722A (ja) 1998-06-03 2002-07-02 クリプターグラフィー リサーチ インコーポレイテッド スマートカードおよび他の暗号システム用の、漏洩を最小に抑える、改良ｄｅｓおよび他の暗号プロセス
US6539092B1 (en) 1998-07-02 2003-03-25 Cryptography Research, Inc. Leak-resistant cryptographic indexed key update
US6804565B2 (en) * 2001-05-07 2004-10-12 Harman International Industries, Incorporated Data-driven software architecture for digital sound processing and equalization
US7889866B2 (en) * 2004-05-24 2011-02-15 Nippon Telegraph And Telephone Company Information leakage prevention apparatus and information leakage prevention method
US10469790B2 (en) * 2011-08-31 2019-11-05 Cablecam, Llc Control system and method for an aerially moved payload system
US9477141B2 (en) 2011-08-31 2016-10-25 Cablecam, Llc Aerial movement system having multiple payloads
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 (sv) * 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
AU4967590A (en) 1990-08-24
DE69024483T2 (de) 1996-07-25
SE8900288L (sv) 1990-07-27
AU648455B2 (en) 1994-04-21
SE462935B (sv) 1990-09-17
ATE132308T1 (de) 1996-01-15
CA2045619A1 (en) 1990-07-27
NO179469C (no) 1996-10-09
EP0455699A1 (en) 1991-11-13
JP3148231B2 (ja) 2001-03-19
JPH04504639A (ja) 1992-08-13
DE69024483D1 (de) 1996-02-08
US5157725A (en) 1992-10-20
FI913577A0 (fi) 1991-07-26
EP0455699B1 (en) 1995-12-27
WO1990009067A1 (en) 1990-08-09
NO912830D0 (no) 1991-07-19
CA2045619C (en) 2000-07-25
AU635915B2 (en) 1993-04-08
SE8900288D0 (sv) 1989-01-30
FI103237B (sv) 1999-05-14
AU3217193A (en) 1993-03-25
NO912830L (no) 1991-09-25
NO179469B (no) 1996-07-01

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Legal Events

Date Code Title Description
MA Patent expired