Device for detecting pressure fluctuations, display device,...

Details Device for detecting pressure fluctuations, display device,... Device for detecting pressure fluctuations, display device,...

2002-05-15

2010-02-23

Jamal, Alexander (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Microphone capsule only

Reexamination Certificate

active

07668322

ABSTRACT:
Part of the (synthetic material) substrate (8) of a display is combined with a light source, e.g. a LED (14) and a photodetector (20) to be used as an optical microphone. A membrane (11) is formed which deforms due to air pressure fluctuations caused by sound waves. The fluctuations are detected by the photodetector for further processing.

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Office Action dated Nov. 27, 2008 for Korean Patent Application 10-2003-7000606.
Communication pursuant to Article 94(3) EPC from corresponding EP Application No. 02 771 688.5.

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