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
Vehicle control apparatus
System for seeking for an optimal configuration of a bi-, tri- or multi-ventricular cardiac resynchronization implanted device
Display device and method of repairing display device
Fuel cell stack including ejector and blower for anode recirculation and method for controlling the same
System and method for reducing antivirus false positives
Dynamic load profiling in a power network
Apparatus and methods for providing efficient space-time structures for preambles, pilots and data for multi-input, multi-output communications systems
  Randomly Featured Patents
Preemptive retransmission of buffered data in a network
Transdermal delivery system for dried particulate or lyophilized medications
Planarized trench and field oxide and poly isolation scheme
Integrated processor and programmable data path chip for reconfigurable computing
Sense amplifier
Driving force distribution method and apparatus
System, method and computer program product for monitoring hacker activities
Dynamic self-checking safety circuit means
Vertical field neurovascular array coil
Method for producing organo-alkali metal compounds