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专利名称：Voice communication unit发明人：Noetzel, Walter R.申请号：EP313560.8申请日：191222公开号：EP0377316A3公开日：19910612
专利附图：
摘要：A voice communication unit is mounted with respect to a full face mask (2) toallow the wearer of the mask to communicate with others. An optical transmitter (10)positioned inside the mask responds to the user's voice to transmit an optical signalthrough the face lens (4) of the mask. A receiver (30) located outside the mask and
optically coupled to the transmitter is responsive to the optical signal and generates asound corresponding to the user's voice. A timer (11) in the transmitter limits theoperating period of the communication unit. The receiver includes volume controlcircuitry (177) for maintaining the generated sound to a relatively constant level.
申请人：Noetzel, Walter R.
地址：2347 McGraw Street Penticton British Columbia V2A 7W9 CA
国籍：CA
代理机构：Brunner, Michael John
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