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
Color imaging device
Apparatus and method for storing event information for an HVAC system
Device and method incorporating an improved text input mechanism
Acoustic measuring instrument
Ignition device in particular for an internal combustion engine, and method for manufacturing same
Digital image processing device and processing method thereof
6-O-substituted benzoxazole and benzothiazole compounds and methods of inhibiting CSF-1R signaling
  Randomly Featured Patents
Apparatus and method for a balanced internal combustion engine coupled to a drive shaft
Sag resistant urethane adhesives with improved antifoaming property
Hydraulic jack having a small diameter bleed part in the cylinder wall
Solid-state exciter circuit with two drive pulses having indendently adjustable durations
Brake system
Hydrogen peroxide pickling scheme for silicon-containing electrical steel grades
Method for fabricating balanced shield connections for noise reduction in MR/GMR read heads
Apparatus, method and system for determining the source of an optical code presentated to an optical code scanner
Sealants made using low unsaturation polyoxyalkylene polyether polyols
Optical switch device employing fluorescent substance in combination with a radioactive element as a light source