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
Magnetoresistive element and manufacturing method of the same
Onium salt-containing polymer
Materials and methods for synthesis of a flavor and aroma volatile in plants
Vending machine
Tunnel magnetoresistance read head with narrow shield-to-shield spacing
Analysis of stress impact on transistor performance
Precision geolocation of moving or fixed transmitters using multiple observers
  Randomly Featured Patents
Heat-sensitive imaging element
Polymer-bonded complexing agents and pharmaceutical agents containing them for MRI
Inorganic-organic composite foam and process for the production thereof
Gram load adjusting method for magnetic head suspensions
EEPROM memory cell embedded on core CMOS for analog applications
Eye transport apparatus
Detection signal correction method and device as well as solid-state detector for use therewith
Train control system
Glove with means for protecting the ligaments and articulations of the hand
Foldable traveling jewelry holder