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GB2337901B - Device and method for scrambling data - Google Patents

Device and method for scrambling data

Info

Publication number
GB2337901B
GB2337901B GB9802129A GB9802129A GB2337901B GB 2337901 B GB2337901 B GB 2337901B GB 9802129 A GB9802129 A GB 9802129A GB 9802129 A GB9802129 A GB 9802129A GB 2337901 B GB2337901 B GB 2337901B
Authority
GB
United Kingdom
Prior art keywords
scrambling data
scrambling
data
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.)
Expired - Fee Related
Application number
GB9802129A
Other versions
GB9802129D0 (en
GB2337901A (en
Inventor
Alan Lloyd
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.)
STMicroelectronics Ltd Great Britain
Original Assignee
STMicroelectronics Ltd Great Britain
SGS Thomson Microelectronics Ltd
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 STMicroelectronics Ltd Great Britain, SGS Thomson Microelectronics Ltd filed Critical STMicroelectronics Ltd Great Britain
Priority to GB9802129A priority Critical patent/GB2337901B/en
Publication of GB9802129D0 publication Critical patent/GB9802129D0/en
Publication of GB2337901A publication Critical patent/GB2337901A/en
Application granted granted Critical
Publication of GB2337901B publication Critical patent/GB2337901B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/4147—PVR [Personal Video Recorder]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
GB9802129A 1998-01-30 1998-01-30 Device and method for scrambling data Expired - Fee Related GB2337901B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9802129A GB2337901B (en) 1998-01-30 1998-01-30 Device and method for scrambling data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9802129A GB2337901B (en) 1998-01-30 1998-01-30 Device and method for scrambling data

Publications (3)

Publication Number Publication Date
GB9802129D0 GB9802129D0 (en) 1998-04-01
GB2337901A GB2337901A (en) 1999-12-01
GB2337901B true GB2337901B (en) 2003-05-07

Family

ID=10826253

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9802129A Expired - Fee Related GB2337901B (en) 1998-01-30 1998-01-30 Device and method for scrambling data

Country Status (1)

Country Link
GB (1) GB2337901B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1393563B1 (en) * 2001-05-14 2004-12-01 SCM Microsystems GmbH Simultaneous digital television streams with conditional access
CN103658468B (en) * 2013-12-19 2015-10-28 台州久嘉机电材料有限公司 Plasticity twin coil forming machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2248535A (en) * 1990-07-18 1992-04-08 Plessey Telecomm Packet encryption in a non-secure data communication system
EP0674441A1 (en) * 1994-03-21 1995-09-27 NOKIA TECHNOLOGY GmbH A method for scrambling a digitally transmitted television signal
US5754651A (en) * 1996-05-31 1998-05-19 Thomson Consumer Electronics, Inc. Processing and storage of digital data and program specific information
GB2333017A (en) * 1997-10-24 1999-07-07 Daewoo Electronics Co Ltd System for recording/reproducing MPEG-2 broadcasting programs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2248535A (en) * 1990-07-18 1992-04-08 Plessey Telecomm Packet encryption in a non-secure data communication system
EP0674441A1 (en) * 1994-03-21 1995-09-27 NOKIA TECHNOLOGY GmbH A method for scrambling a digitally transmitted television signal
US5754651A (en) * 1996-05-31 1998-05-19 Thomson Consumer Electronics, Inc. Processing and storage of digital data and program specific information
GB2333017A (en) * 1997-10-24 1999-07-07 Daewoo Electronics Co Ltd System for recording/reproducing MPEG-2 broadcasting programs

Also Published As

Publication number Publication date
GB9802129D0 (en) 1998-04-01
GB2337901A (en) 1999-12-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20070130