Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Optical keypad for electronic device










Image Number 5 for United States Patent #7924175.

Disclosed in a wearable electronic device including an optical keypad supported by a keypad housing. The optical keypad may include a plurality of keys disposed along the keypad housing, and a plurality of illumination sources and optical receivers with a corresponding illumination source and optical receiver for each of the plurality of keys. The keypad signal interface may be limited to three connections, to provide a connection for power, a connection for ground, and a connection for data between the keypad housing and the main housing. The electronic device may also include at least one optical receiver configured to be optically coupled to at least one of the plurality of illumination sources, and configured to convert a received optical signal representing data into an electrical signal representing data. The illumination sources may provide optical signals during key presses, and may in addition provide key illumination for unpressed keys.








 
 
  Recently Added Patents
Client-managed group communication sessions within a wireless communications system
Extreme ultraviolet light source device and method for generating extreme ultraviolet light
Universal tablet and smartphone holder
Drugs for prophylaxis or mitigation of taxane-induced neurotoxicity
System for highlighting targets on head up displays with near focus plane
Filler containing composition and process for production and use thereof
Methods and compositions for improved F-18 labeling of proteins, peptides and other molecules
  Randomly Featured Patents
Dry direct compression compositions for controlled release dosage forms
Individual room duct and ventilation system for livestock production building
Convergence correction device for electron beams in color picture tube and process of using
Laser process
4-Halogeno-s-triazin-2-yl-phosphoramide acid containing reactive dyestuffs
Tactical nuclear slide rule for a plurality of environments
Shelving
Process for the manufacture of methyl t-butyl ether
Chip type solid electrolyte capacitor
Wheeled toy