CA1290052C - Methode et appareil d'identification de programmes - Google Patents

Methode et appareil d'identification de programmes

Info

Publication number
CA1290052C
CA1290052C CA000615693A CA615693A CA1290052C CA 1290052 C CA1290052 C CA 1290052C CA 000615693 A CA000615693 A CA 000615693A CA 615693 A CA615693 A CA 615693A CA 1290052 C CA1290052 C CA 1290052C
Authority
CA
Canada
Prior art keywords
signal
predetermined
video
comparing
determining
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 - Lifetime
Application number
CA000615693A
Other languages
English (en)
Inventor
David A. Kiewit
Daozheng Lu
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.)
TNC US Holdings Inc
Original Assignee
AC Nielsen Co
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 US06/604,367 external-priority patent/US4697209A/en
Application filed by AC Nielsen Co filed Critical AC Nielsen Co
Application granted granted Critical
Publication of CA1290052C publication Critical patent/CA1290052C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)
CA000615693A 1984-04-26 1990-04-04 Methode et appareil d'identification de programmes Expired - Lifetime CA1290052C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US06/604,367 1984-04-26
US06/604,367 US4697209A (en) 1984-04-26 1984-04-26 Methods and apparatus for automatically identifying programs viewed or recorded
CA000480035A CA1279124C (fr) 1984-04-26 1985-04-25 Methode et dispositif d'identification de programmes

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA000480035A Division CA1279124C (fr) 1984-04-26 1985-04-25 Methode et dispositif d'identification de programmes

Publications (1)

Publication Number Publication Date
CA1290052C true CA1290052C (fr) 1991-10-01

Family

ID=25670656

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000615693A Expired - Lifetime CA1290052C (fr) 1984-04-26 1990-04-04 Methode et appareil d'identification de programmes

Country Status (1)

Country Link
CA (1) CA1290052C (fr)

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