JPS5730438A - Two-stage encoding for high frequency signal - Google Patents

Two-stage encoding for high frequency signal

Info

Publication number
JPS5730438A
JPS5730438A JP9515581A JP9515581A JPS5730438A JP S5730438 A JPS5730438 A JP S5730438A JP 9515581 A JP9515581 A JP 9515581A JP 9515581 A JP9515581 A JP 9515581A JP S5730438 A JPS5730438 A JP S5730438A
Authority
JP
Japan
Prior art keywords
high frequency
frequency signal
stage encoding
encoding
stage
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP9515581A
Other languages
Japanese (ja)
Other versions
JPS63976B2 (en
Inventor
Ai Buruusutein Reo
Edo Kuranderu Pooru
Ei Doreeku Deebitsudo
Jiedeinaku Reo
Daburiyuu Shinpuson Rarii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oak Industries Inc
Original Assignee
Oak Industries Inc
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 Oak Industries Inc filed Critical Oak Industries Inc
Publication of JPS5730438A publication Critical patent/JPS5730438A/en
Publication of JPS63976B2 publication Critical patent/JPS63976B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/60—Digital content management, e.g. content distribution
    • H04L2209/601—Broadcast encryption

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Storage Device Security (AREA)
  • Circuits Of Receivers In General (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
JP9515581A 1980-06-19 1981-06-19 Two-stage encoding for high frequency signal Granted JPS5730438A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16098580A 1980-06-19 1980-06-19

Publications (2)

Publication Number Publication Date
JPS5730438A true JPS5730438A (en) 1982-02-18
JPS63976B2 JPS63976B2 (en) 1988-01-09

Family

ID=22579317

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9515581A Granted JPS5730438A (en) 1980-06-19 1981-06-19 Two-stage encoding for high frequency signal

Country Status (11)

Country Link
JP (1) JPS5730438A (en)
AU (1) AU539774B2 (en)
BR (1) BR8103848A (en)
CA (1) CA1162623A (en)
DE (1) DE3124150C2 (en)
FR (1) FR2485305A1 (en)
GB (1) GB2079109B (en)
GR (1) GR74584B (en)
IL (1) IL63102A (en)
MX (1) MX150514A (en)
NL (1) NL8102940A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178040A (en) * 1983-03-29 1984-10-09 Fujitsu Ltd System for distributing and processing key information
JPS6032449A (en) * 1983-08-01 1985-02-19 Matsushita Electric Ind Co Ltd Ciphered digital broadcast equipment
DE3524472A1 (en) * 1984-07-09 1986-01-16 Kabushiki Kaisha Toshiba, Kawasaki, Kanagawa TRANSMITTER / RECEIVER FOR ENCRYPTED SIGNALS

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1177558A (en) * 1982-04-15 1984-11-06 Groupe Videotron Ltee. (Le) Cable network data transmission system
US4531020A (en) * 1982-07-23 1985-07-23 Oak Industries Inc. Multi-layer encryption system for the broadcast of encrypted information
EP0167442A3 (en) * 1984-06-29 1986-12-30 Fairchild Weston Systems Inc. Secure communication system
US4751732A (en) * 1984-07-06 1988-06-14 Kabushiki Kaisha Toshiba Broadcasting system
DE3439120A1 (en) * 1984-10-25 1986-05-07 Philips Kommunikations Industrie AG, 8500 Nürnberg Method for identifying a subscriber station of a telecommunications network
DE3501178A1 (en) * 1985-01-16 1986-07-17 Blaupunkt-Werke Gmbh, 3200 Hildesheim METHOD AND CIRCUIT ARRANGEMENT FOR PREVENTING THE UNAUTHORIZED RECEPTION OF ENCRYPTED TELEVISION SIGNALS
JPH0685517B2 (en) * 1985-06-28 1994-10-26 ソニー株式会社 Information service system
US4866770A (en) * 1986-07-08 1989-09-12 Scientific Atlanta, Inc. Method and apparatus for communication of video, audio, teletext, and data to groups of decoders in a communication system
DE3715081A1 (en) * 1987-05-06 1988-11-17 Siemens Ag Method for encrypting digital video signals
DE3731532A1 (en) * 1987-09-18 1989-03-30 Siemens Ag Process for transmitting encoded picture signals
DE3822354A1 (en) * 1988-07-01 1990-01-04 Siemens Ag Method and arrangement for scrambling image signals
DE4419634A1 (en) * 1994-06-04 1995-12-07 Esd Vermoegensverwaltungsgesel Decryption device for digital information and method for performing the encryption and decryption of this
DE4420967C2 (en) * 1994-06-16 2000-02-10 Esd Vermoegensverwaltungsgesel Decryption device for digital information and method for carrying out the encryption and decryption of this using the decryption device
DE4420970A1 (en) * 1994-06-16 1995-12-21 Esd Vermoegensverwaltungsgesel Decryption device for decryption algorithms and method for performing the encryption and decryption thereof
DE19619299A1 (en) * 1996-05-13 1997-12-18 Siemens Ag Code key distribution method in fibre distributed data interface (FDDI) transmission network
DE19649292A1 (en) * 1996-11-28 1998-06-04 Deutsche Telekom Ag Access protection method for pay television
GB2393367B (en) * 1999-04-16 2004-05-26 Fujitsu Ltd Optical line terminal
JP4201430B2 (en) 1999-04-16 2008-12-24 富士通株式会社 Optical subscriber line termination equipment
GB2355819A (en) * 1999-10-26 2001-05-02 Marconi Comm Ltd Authentication of data and software
GB2367726B (en) * 2000-10-07 2003-04-23 Complementary Tech Ltd Communications with remote embedded applications

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH516854A (en) * 1969-11-29 1971-12-15 Ciba Geigy Ag Method and device for encrypted transmission of information
DE2706421C2 (en) * 1977-02-16 1979-03-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Procedure for setting ciphertext generators in encryption devices
CH604432A5 (en) * 1977-03-16 1978-09-15 Europ Handelsges Anst

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59178040A (en) * 1983-03-29 1984-10-09 Fujitsu Ltd System for distributing and processing key information
JPS6032449A (en) * 1983-08-01 1985-02-19 Matsushita Electric Ind Co Ltd Ciphered digital broadcast equipment
DE3524472A1 (en) * 1984-07-09 1986-01-16 Kabushiki Kaisha Toshiba, Kawasaki, Kanagawa TRANSMITTER / RECEIVER FOR ENCRYPTED SIGNALS

Also Published As

Publication number Publication date
DE3124150A1 (en) 1982-03-18
JPS63976B2 (en) 1988-01-09
AU539774B2 (en) 1984-10-18
GB2079109B (en) 1984-04-11
IL63102A (en) 1984-03-30
MX150514A (en) 1984-05-16
NL8102940A (en) 1982-01-18
GB2079109A (en) 1982-01-13
FR2485305A1 (en) 1981-12-24
BR8103848A (en) 1982-03-09
GR74584B (en) 1984-06-29
IL63102A0 (en) 1981-09-13
AU7187181A (en) 1981-12-24
CA1162623A (en) 1984-02-21
DE3124150C2 (en) 1985-03-28

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