Wednesday, 31 October 2018

A Snapshot on Barcode Scanners

Data logic QD2430 barcode scanners


The barcode scanners are the electronic tools that are used for reading and deliver a multitude of the printed barcodes to a computer. These scanners include lens sensors, lenses as well as the ‘light source’ for the purpose of translating all the ‘optical impulses’ to the ‘electrical impulses’. The barcode scanner comprises of the decoder circuitry which analyses the image data of the barcode which the sensor provides and sends the barcode content to the scanner’s ‘output port’.

Classification of the Barcode Scanners
There are many kinds of the barcode scanners from the single line barcode scanners to the ‘two-dimensional’ imaging scanners which can be classified based on the technology employed and the housing design.

Based on the Technology Used
  •   Omnidirectional Barcode Readers: The omnidirectional scanners use a series of the straight or curved scanning lines in various in the ‘starburst form’. The scanners generate different patterns of beams in various orientations that permit reading of the barcodes to the ‘barcode readers’ in different angles. Many of the barcode readers make use of the ‘polygonal’ single rotating mirrors as well as various ‘fixed mirrors’ for generating the complex scan patterns.
  •   Camera-Based Readers: The ‘camera-based’ readers are the 2D barcode scanners which make use of the image processing procedures and the camera for decoding a bar code. The video camera readers and the large ‘field-of-view’ readers are included in this category.

Based on Housing Design

  • Handheld Scanner: The handheld scanner is equipped with a handle as well as a trigger button which helps in switching on the ‘light source’.
  • Stationary Scanner: The ‘stationary scanner’ is either wall or table mounted and are used widely at the ‘checkout counters’ in the supermarkets and the retail shops.
  • PDA scanner: The PDA scanner or the ‘Auto-ID’ PDA are the inbuilt barcode scanners or are the attached barcode readers.
  • Automatic reader: The automatic reader is a ‘back office’ tool which is used for the purpose of reading the ‘barcode documents’ at the rate of 50,000/hour.
  • Cordless or Wireless Scanner: The cordless scanner is operated with batteries and is used for the purpose of transferring the data to any connected device like the PC.
  • This is a summary of the different barcode scanners that are widely used in different industries. For more information, call our pos expert @  0800112970

Monday, 1 October 2018

A Rundown of the Types of Barcode Scanners

The electronic device, the barcode scanners can read and output ‘printed barcodes’ to a computer. It has a light sensor, light source, and a lens. The ‘light sensor’ translates ‘optical impulses’ to ‘electrical impulses’. They contain ‘decoder circuitry’ which analyses the ‘barcode’s’ image data offered by the sensor as well as sending the ‘barcode’s content’ to the scanner’s ‘output port’.


The Barcode Scanner Can be Classified Based on Technology
  • Pen-Type Barcode Scanners: The ‘pen-type’ scanners consist of the light source and the photodiode which is placed on the pen’s or wand’s tip. The photodiode of the scanner measures the intensity of light which is reflected from the source of light when the tip of the barcode crosses space in each of the bars as well as the printed code.

  • Laser Barcode Scanners: The laser-type barcode scanners work on the same principle as that of the pen scanners with the difference that it uses the ‘laser beam’ as the ‘light source’. This type of scanners uses the ‘reciprocating mirror’ or ‘rotating prism’  for scanning of the laser beam back and forth across barcodes.

  • LED Scanners: The CCD readers or the LED scanners use tiny light sensors which line-up in the reader’s head in one row. Each sensor calculates the intensity of light in front of it.

  • Omnidirectional Scanners: The omnidirectional barcode readers use the straight or curved scanning lines in the form of ‘starburst’ in various forms. Unlike the single-line laser barcode readers, they generate various orientations of beam patterns that allow them to read the barcodes offered to them from different angles. These barcode scanners use the ‘rotating single’ polygonal mirror or a ‘mirror cluster’ for producing the complicated ‘scan patterns’. These barcode readers help in reading the poorly printed, wrinkled and the torn barcodes.

  • ‘Cell Phone’ Cameras: The ‘cell-phone cameras’ without the feature of ‘auto-focus’ are not ideal for ‘barcode format’ reading. The ‘2D barcodes’ are cellphone optimized.  With cellphone cameras, the clients can play MP3 and book the catalogs.

Going through the above-mentioned barcode scanners would give you a summary of the various types of barcode scanners and their use in the different sectors. For more details, call our pos expert @  0800112970