EP 0806116 A4 20000628 - SELECTIVE INTERDICTION OF TELEVISION CHANNELS
Title (en)
SELECTIVE INTERDICTION OF TELEVISION CHANNELS
Title (de)
SELEKTIVE SPERRUNG VON FERNSEHKANALEN
Title (fr)
INTERDICTION SELECTIVE DE CANAUX DE TELEVISION
Publication
Application
Priority
- US 9516827 W 19951221
- US 9508721 W 19950711
Abstract (en)
[origin: WO9703523A1] With the present decoder/interdiction device combination (566), the microcontroller (518) receives authorization data from a data receiver (568) via its data output (570) that has been inserted at the headend to identify authorized subscribers (preferably identified with a predefined subscriber or box code in the microcontroller (518). The same microcontroller (518) that controls the common decrypting of a commonly encrypted input source (572), loads the channel interdiction table (516) according to the authorization data, e.g., according to tiers. The data in the interdiction table (516) is then used to control the operation of the frequency synthesizer/VCO (516) and the mute switch (522) using the control interface (528) and mute control signal (534) according to the previously described algorithm. This improved combination now permits the simultaneous reception of multiple unencrypted signals (suitable for picture-in-picture use) while still permitting the provider to withhold access to selected channels.
IPC 1-7
IPC 8 full level
H04N 7/16 (2011.01); H04N 7/167 (2011.01); H04N 7/171 (2011.01)
CPC (source: EP)
H04N 7/165 (2013.01); H04N 7/1675 (2013.01); H04N 7/171 (2013.01); H04N 7/1713 (2013.01)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 9703523A1
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 9703523 A1 19970130; AP 896 A 20001117; AU 4645096 A 19970210; BR 9510615 A 19990427; EP 0806116 A1 19971112; EP 0806116 A4 20000628; OA 10754 A 20021211
DOCDB simple family (application)
US 9516827 W 19951221; AP 9801181 A 19951221; AU 4645096 A 19951221; BR 9510615 A 19951221; EP 95944387 A 19951221; OA 9800003 A 19980109