Communications: electrical – Condition responsive indicating system – With particular coupling link
Reexamination Certificate
2007-01-25
2011-10-18
Vo, Tuyet Thi (Department: 2821)
Communications: electrical
Condition responsive indicating system
With particular coupling link
C340S539230, C340S539260, C340S539300, C340S555000
Reexamination Certificate
active
08040239
ABSTRACT:
A lighting control system (1) comprises: a communication bus (2); at least one extension movement detector (30) issuing detection pulses (DOS) over said communication bus in response to detecting a movement, at first time intervals (T1) determined by a sensor timer (34); one master luminaire (10) comprising a lamp (11) and a master controller (13) issuing master command signals (MCS) over said bus in response to detection pulses (DOS) received over said bus; and at least one slave luminaire (20) comprising a lamp (21) and a slave controller (23) being responsive to the master control signals (MCS) received over said bus to switch the corresponding lamp ON and OFF. Whenever the master controller receives a detection pulse, it starts a master timer (15) and switches the lamps ON. If the master timer times out (T2) without the master controller receiving any detection pulses, the master controller switches the lamps OFF.
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Koninklijke Philips Electronics , N.V.
Vo Tuyet Thi
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