Resources Contact Us Home
Zero-force key activation keyboard with dynamic individual key illumination

Image Number 9 for United States Patent #7417624.

Described is a zero-force key activation keyboard with individual key illumination. The keyboard includes a non-moving key for causing generation of an input signal when activated. The key has a depressed surface defining an approximately concave well with sides forming an open region sized to receive a tip of a finger. A light emitter positioned on one side of the well emits a beam of light across the open region to an opposite side of the well. A light detector is positioned on the opposite side of the well to receive the light beam and to signal activation of the key when the light beam is obstructed from being received by the light detector. Each key is illuminated from within the well. When the key is activated, its illumination color can change. Upon release, the illumination color returns immediately or gradually back to a previous color or unlighted state.

  Recently Added Patents
Information distribution system, information distributing method, node, and recording medium
Ionic compound, anti-static pressure-sensitive adhesive and polarizer comprising the same
Image-capturing device and projection automatic calibration method of projection device
Protective circuit board and battery pack using the same
Semiconductor device and method for manufacturing the same
Inter vehicle communication system
Image forming apparatus
  Randomly Featured Patents
Air core cooking vessel
Substrate having a functionally gradient coefficient of thermal expansion
Interspecific tree named `Blackred VIII`
Process for production of polycarboxylic aromatic acids
Residual stream upgrading in a propylene oxide-styrene monomer process
Stability enhancements in metal oxide semiconductor thin film transistors
Method for removing arsenic from copper and/or nickel bearing aqueous acidic solutions by solvent extraction
Test system for silicon substrate having electrical contacts
Graphical user interface for an appliance network
Ethylene copolymer having multiple pitch molecular weight distribution and the method of preparing the same