07351949 is referenced by 16 patents and cites 13 patents.

A switch panel having a touch plate, light converter, and light analyzer are disclosed. The touch plate includes an optically transparent layer having first and second surfaces, and having an index of refraction greater than that of air. The touch plate conducts light of an excitation wavelength between the first and second surfaces and emits part of that light through the second surface at one of a plurality of emission locations depending on the position at which pressure is applied to the first surface. The light converter is positioned to receive the light emitted through the second surface and generates light having a plurality of distinct location-specific spectra, one of the location-specific spectra corresponding to each of the emission locations. The light analyzer generates a signal indicative of which of the location-specific spectra was generated by the light converter.

Title
Optical generic switch panel
Application Number
11/484377
Publication Number
7351949 (B2)
Application Date
July 10, 2006
Publication Date
April 1, 2008
Inventor
Calvin B Ward
Castro Valley
CA, US
Farn Hin Chen
Ipoh
MY
Kean Loo Keh
Penang
MY
Chin Hin Oon
Penang
MY
Assignee
Avago Technologies General IP
SG
IPC
H01J 40/14
G06M 7/00
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