Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and apparatus for an optical laser keypad










Image Number 3 for United States Patent #6525677.

An optical laser numeric keypad (100) provides a digital signal indicative of which of a plurality of key locations is selected. The optical laser numeric keypad (100) comprises a plurality of optical sensors (132 and 134) each configured to respond to a change in a received light quantity and to provide an electrical signal in response to a selection of a key at a key location. The received light quantity of at least one of the plurality of optical sensors (132 and 134) is changeable by selection of a key location.








 
 
  Recently Added Patents
Architecture for accelerated computer processing
Seat post having a non-uniform cross-section
Method and structure for forming ETSOI capacitors, diodes, resistors and back gate contacts
Signal apparatus for facilitating safe backup of vehicles
Post-processing including median filtering of noise suppression gains
Multi-dimensional tuple support in rule engines
Automated gate system
  Randomly Featured Patents
Microreplicated article
Web search engine with graphic snapshots
Method of detecting an occurrence of hydroplaning of a tire on a road
Video error/distortion checker
Cephalosporin displacement reaction
Package substrate
Aerobic microbiological wastewater treatment reactor
Optical scanning lens, optical scanning and imaging system and optical scanning apparatus incorporating same
Integrated solvent deasphalting and gasification
Environmental control system