Resources Contact Us Home
Method and apparatus for recognizing code information

Image Number 2 for United States Patent #4136821.

A light source, a converging lens and a light responsive image sensor are optically coupled to recognize the code information such as bar codes recorded on an object. The light source supplies the code information with illumination light and the image sensor receives the reflected light through the converging lens to convert it into the image signal. The distance between the lens and the image sensor is adjusted automatically in response to the image signal such that clear reflected light is received by the image sensor, whereby correct information recognizing operation is attained.

  Recently Added Patents
Processing circuitry for use with a position sensor
End-of-session authentication
Stable liquid VEGF antagonist formulations
Method and apparatus for error correction in MBMS receipt system
Display system, display control method and computer program
Adaptive control for uncertain nonlinear multi-input multi-output systems
Sub-resolution assist feature repair
  Randomly Featured Patents
Method and structure for connecting batteries
Scale controller
Server apparatus
Treatment equipment of organic waste and treatment method
Single-chip common-drain JFET device and its applications
Method and apparatus for automatic calibration of analog video chromakey mixer
Vehicle, in particular construction vehicle
Connector having filter adaptor
Apparatus for forming a photographic pod-tape product
Semiconductor device and method of manufacturing the same