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
System and method for video encoding
Method for etched cavity devices
Sacrificial spacer approach for differential source/drain implantation spacers in transistors comprising a high-k metal gate electrode structure
Compositions and methods of vascular injury repair
Image pickup device with a plurality of pixels and an AD conversion circuit
Light powered hearing aid
Configurable pitch reducing optical fiber array
  Randomly Featured Patents
Grill cart
Emotion detecting method, emotion detecting apparatus, emotion detecting program that implements the same method, and storage medium that stores the same program
Circuit and method for preventing reverse current flow into a voltage regulator from an output thereof
Fuel injection nozzle system
Special package and method
Gated clock design supporting method, gated clock design supporting apparatus, and computer readable memory storing gated clock design supporting program
Optical touch panel and touch display panel and touch input method thereof
Fabrication of metal-ferroelectric-metal capacitors with a two step patterning sequence
Write driving circuit and semiconductor memory apparatus using the same
Process for detecting PrP.sup.SC using an antibiotic from the family of aminoglycosides