NO179469C - Fremgangsmåte og apparat for å hindre ekstern avslöring av signaloverföring - Google Patents

Fremgangsmåte og apparat for å hindre ekstern avslöring av signaloverföring

Info

Publication number
NO179469C
NO179469C NO912830A NO912830A NO179469C NO 179469 C NO179469 C NO 179469C NO 912830 A NO912830 A NO 912830A NO 912830 A NO912830 A NO 912830A NO 179469 C NO179469 C NO 179469C
Authority
NO
Norway
Prior art keywords
signal
pct
pseudo
sequences
video
Prior art date
Application number
NO912830A
Other languages
English (en)
Other versions
NO179469B (no
NO912830D0 (no
NO912830L (no
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 NO912830D0 publication Critical patent/NO912830D0/no
Publication of NO912830L publication Critical patent/NO912830L/no
Publication of NO179469B publication Critical patent/NO179469B/no
Publication of NO179469C publication Critical patent/NO179469C/no

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)
  • Burglar Alarm Systems (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Television Systems (AREA)
  • Controls And Circuits For Display Device (AREA)
  • Inspection Of Paper Currency And Valuable Securities (AREA)
  • Transforming Electric Information Into Light Information (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
NO912830A 1989-01-30 1991-07-19 Fremgangsmåte og apparat for å hindre ekstern avslöring av signaloverföring NO179469C (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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

Publications (4)

Publication Number Publication Date
NO912830D0 NO912830D0 (no) 1991-07-19
NO912830L NO912830L (no) 1991-09-25
NO179469B NO179469B (no) 1996-07-01
NO179469C true NO179469C (no) 1996-10-09

Family

ID=20374874

Family Applications (1)

Application Number Title Priority Date Filing Date
NO912830A NO179469C (no) 1989-01-30 1991-07-19 Fremgangsmåte og apparat for å hindre ekstern avslöring av signaloverföring

Country Status (11)

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

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
US6304658B1 (en) 1998-01-02 2001-10-16 Cryptography Research, Inc. Leak-resistant cryptographic method and apparatus
US7587044B2 (en) 1998-01-02 2009-09-08 Cryptography Research, Inc. Differential power analysis 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
EP1090480B1 (en) 1998-06-03 2019-01-09 Cryptography Research, Inc. Improved des and other cryptographic processes with leak minimization for smartcards and other cryptosystems
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
WO2005114902A1 (ja) * 2004-05-24 2005-12-01 Nippon Telegraph And Telephone Corporation 情報漏洩防止装置及び情報漏洩防止方法
US9337949B2 (en) 2011-08-31 2016-05-10 Cablecam, Llc Control system for an aerially moved payload
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

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH623271A5 (no) * 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
NO179469B (no) 1996-07-01
AU3217193A (en) 1993-03-25
SE462935B (sv) 1990-09-17
EP0455699B1 (en) 1995-12-27
SE8900288D0 (sv) 1989-01-30
AU635915B2 (en) 1993-04-08
US5157725A (en) 1992-10-20
NO912830D0 (no) 1991-07-19
ATE132308T1 (de) 1996-01-15
JPH04504639A (ja) 1992-08-13
FI103237B1 (fi) 1999-05-14
FI913577A0 (fi) 1991-07-26
WO1990009067A1 (en) 1990-08-09
EP0455699A1 (en) 1991-11-13
DE69024483T2 (de) 1996-07-25
CA2045619A1 (en) 1990-07-27
DE69024483D1 (de) 1996-02-08
CA2045619C (en) 2000-07-25
SE8900288L (sv) 1990-07-27
FI103237B (fi) 1999-05-14
AU4967590A (en) 1990-08-24
NO912830L (no) 1991-09-25
JP3148231B2 (ja) 2001-03-19
AU648455B2 (en) 1994-04-21

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Legal Events

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MM1K Lapsed by not paying the annual fees