Invention Grant
US07668322B2 Device for detecting pressure fluctuations, display device, recording device and sound reproduction system
有权
用于检测压力波动的装置，显示装置，记录装置和声音再现系统
- Patent Title: Device for detecting pressure fluctuations, display device, recording device and sound reproduction system
- Patent Title (中): 用于检测压力波动的装置，显示装置，记录装置和声音再现系统
-
Application No.: US10145642Application Date: 2002-05-15
-
Publication No.: US07668322B2Publication Date: 2010-02-23
- Inventor: Fransiscus Gerardus Coenradus Verweg
- Applicant: Fransiscus Gerardus Coenradus Verweg
- Applicant Address: HK Hong Kong
- Assignee: TPO Hong Kong Holding Limited
- Current Assignee: TPO Hong Kong Holding Limited
- Current Assignee Address: HK Hong Kong
- Agency: Lowe Hauptman Ham & Berner, LLP
- Priority: EP01201883 20010518
- Main IPC: H04R25/00
- IPC: H04R25/00
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.
Public/Granted literature
Information query
