EP 0466917 A4 19920916 - INTERDICTION METHOD AND APPARATUS WITH VARIABLE DWELL TIME
Title (en)
INTERDICTION METHOD AND APPARATUS WITH VARIABLE DWELL TIME
Publication
Application
Priority
US 47604190 A 19900206
Abstract (en)
[origin: WO9112694A1] A cable television interdiction apparatus (130) comprises a microprocessor actuation and control means (300) for actuating and controlling one or more frequency agile voltage controlled oscillators (341-344). The voltage controlled oscillators (341-344) selectively jam only unauthorized premium programming transmitted from a headend (100) to a particular subscriber. The method of interdiction comprises the steps of generating and storing voltage control words for operating the oscillators (341-344) consistent with a headend selected jamming factor for a particular channel to be jammed and addressably transmitted and stored premium programming authorization data.
IPC 1-7
IPC 8 full level
H04N 7/16 (2006.01)
CPC (source: EP KR)
H04K 3/41 (2013.01 - EP); H04K 3/42 (2013.01 - EP); H04K 3/825 (2013.01 - EP); H04N 7/166 (2013.01 - EP); H04N 21/2347 (2013.01 - KR); H04K 2203/14 (2013.01 - EP)
Citation (search report)
See references of WO 9112694A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
WO 9112694 A1 19910822; AU 636021 B2 19930408; AU 7347491 A 19910903; CA 2051415 A1 19910807; CA 2051415 C 19980407; EP 0466917 A1 19920122; EP 0466917 A4 19920916; KR 100231088 B1 19991115; KR 920702159 A 19920812
DOCDB simple family (application)
US 9100809 W 19910206; AU 7347491 A 19910206; CA 2051415 A 19910206; EP 91905184 A 19910206; KR 910701276 A 19911005