Remotely controllable route indicating devices

Details Remotely controllable route indicating devices Remotely controllable route indicating devices

2008-03-19

2010-06-08

Pham, Toan N (Department: 2612)

Communications: electrical

Condition responsive indicating system

With particular coupling link

C340S628000, C340S692000, C340S691100, C340S691800, C340S506000, C340S384100

Reexamination Certificate

active

07733222

ABSTRACT:
A flexible audio output device includes control circuits couplable to a communications system and an audio announcement system. The communications system can transmit function specifying parameters to the device. Various forms of directional audio, or verbal messages can be emitted in accordance with received parameters.

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