Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2011-06-28
2011-06-28
Sohn, Seung C (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C340S555000, C340S556000, C340S557000
Reexamination Certificate
active
07968837
ABSTRACT:
An object is to provide a separated sensor capable of synchronizing a light transmitting unit with a light receiving unit, without using a control line.There is provided a separated sensor including a light transmitting unit that transmits detection light to a monitoring area, and a light receiving unit that receives detection light transmitted by the light transmitting unit, the light transmitting unit and the light receiving unit laid out separately from each other. On one of the light transmitting unit and the light receiving unit, there is provided a synchronization-light transmitting unit that transmits, by wireless, synchronization light to synchronize the light transmitting unit with the light receiving unit. On the other of the light transmitting unit and the light receiving unit, there are provided a synchronization-light receiving unit that receives the synchronization light transmitted from the synchronization-light transmitting unit, and a synchronization-establishment processing unit that performs a predetermined process to establish the synchronization based on the synchronization light received by the synchronization-light receiving unit.
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Itou Masayuki
Nakajima Satoshi
Hochiki Corporation
Lowe Hauptman & Ham & Berner, LLP
Sohn Seung C
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