GB2251760B - Descrambling system for broadcast television signals - Google Patents

Descrambling system for broadcast television signals

Info

Publication number
GB2251760B
GB2251760B GB9203202A GB9203202A GB2251760B GB 2251760 B GB2251760 B GB 2251760B GB 9203202 A GB9203202 A GB 9203202A GB 9203202 A GB9203202 A GB 9203202A GB 2251760 B GB2251760 B GB 2251760B
Authority
GB
United Kingdom
Prior art keywords
television signals
broadcast television
descrambling system
descrambling
broadcast
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
GB9203202A
Other versions
GB9203202D0 (en
GB2251760A (en
Inventor
Adrian Paul Robinson
Simon Richard Shuttleworth
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.)
British Broadcasting Corp
Original Assignee
British Broadcasting Corp
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
Priority claimed from GB888816500A external-priority patent/GB8816500D0/en
Application filed by British Broadcasting Corp filed Critical British Broadcasting Corp
Priority to GB9203202A priority Critical patent/GB2251760B/en
Publication of GB9203202D0 publication Critical patent/GB9203202D0/en
Publication of GB2251760A publication Critical patent/GB2251760A/en
Application granted granted Critical
Publication of GB2251760B publication Critical patent/GB2251760B/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
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/169—Systems operating in the time domain of the television signal
    • H04N7/1696—Systems operating in the time domain of the television signal by changing or reversing the order of active picture signal portions
GB9203202A 1988-07-12 1992-02-14 Descrambling system for broadcast television signals Expired - Fee Related GB2251760B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9203202A GB2251760B (en) 1988-07-12 1992-02-14 Descrambling system for broadcast television signals

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888816500A GB8816500D0 (en) 1988-07-12 1988-07-12 Descrambling & line tilt measurement systems for broadcast television signals
GB9203202A GB2251760B (en) 1988-07-12 1992-02-14 Descrambling system for broadcast television signals

Publications (3)

Publication Number Publication Date
GB9203202D0 GB9203202D0 (en) 1992-04-01
GB2251760A GB2251760A (en) 1992-07-15
GB2251760B true GB2251760B (en) 1992-09-23

Family

ID=26294151

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9203202A Expired - Fee Related GB2251760B (en) 1988-07-12 1992-02-14 Descrambling system for broadcast television signals

Country Status (1)

Country Link
GB (1) GB2251760B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277420A (en) * 1993-04-21 1994-10-26 Thomson Consumer Electronics Correcting a distortion of a video line signal.
WO2004040903A1 (en) * 2002-11-01 2004-05-13 Koninklijke Philips Electronics N.V. Image decryption device and method

Also Published As

Publication number Publication date
GB9203202D0 (en) 1992-04-01
GB2251760A (en) 1992-07-15

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Legal Events

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

Effective date: 19970711