Resources Contact Us Home
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
Organic light emitting display apparatus
Petunia plant named `Bartpet001`
Method for measuring and improving organization effectiveness
Probe for ultrasound diagnostic apparatus
Dynamic learning method and adaptive normal behavior profile (NBP) architecture for providing fast protection of enterprise applications
Network attachment for IMS systems for legacy CS UE with home node B access
Method of forming a semiconductor package
  Randomly Featured Patents
Cleanable oil filter
Process to prepare a base oil having a viscosity index of between 80 and 140
Method and device for monitoring the service life of a filter
Selective .beta..sub.3 adrenergic agonists
Compact type fine-tuning lifter
Method for preparing dual colloid compositions
Production of anti-self bodies from antibody segment repertories and displayed on phage
High hardness stainless steel for screws used in magnetic memory devices
Computer monitor or similar article
Differential gripper mechanism