EP 0262757 A3 19900411 - METHOD OF AND APPARATUS FOR MONITORING A POPULATION IN A ROOM AND FOR COLLECTING DATA FROM TELEVISION VIEWERS
Title (en)
METHOD OF AND APPARATUS FOR MONITORING A POPULATION IN A ROOM AND FOR COLLECTING DATA FROM TELEVISION VIEWERS
Publication
Application
Priority
US 90077586 A 19860826
Abstract (en)
[origin: EP0262757A2] Apparatus for monitoring the population in a room containing a device (112), the apparatus comprises a detector (300) for detecting the entry and exit of people from the room, and a monitor (410) for monitoring the status of the device (112). The monitor includes a prompting circuit (412) responsive to the detector (300) for prompting people in the room to input additional information to the monitor (410) when the detector detects entry or exit from the room.
IPC 1-7
IPC 8 full level
H04H 60/33 (2008.01); H04H 60/45 (2008.01); H04N 17/00 (2006.01)
IPC 8 main group level
H04H 1/00 (2006.01)
CPC (source: EP)
H04H 60/33 (2013.01); H04H 60/45 (2013.01)
Citation (search report)
- [AD] EP 0144085 A2 19850612 - ADTEL PRODUCTS INC [US], et al
- [A] GB 2146152 A 19850411 - AGB RESEARCH PLC
- [A] GB 2140947 A 19841205 - AGB RESEARCH PLC
- [A] EP 0128481 A2 19841219 - ADTEL PRODUCTS INC [US], et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0262757 A2 19880406; EP 0262757 A3 19900411; AU 592209 B2 19900104; AU 7558687 A 19880303; CA 1324653 C 19931123; JP S6356090 A 19880310
DOCDB simple family (application)
EP 87305743 A 19870629; AU 7558687 A 19870713; CA 540517 A 19870625; JP 12958187 A 19870526