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Narrow-bodied, single- and twin-windowed portable scanning head for reading bar code symbols

  • US 4,673,805 A
  • Filed: 08/01/1983
  • Issued: 06/16/1987
  • Est. Priority Date: 01/25/1982
  • Status: Expired due to Term
First Claim
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1. In a scanning system for reading bar code symbols, a system control arrangement comprising:

  • (a) a scanning head;

    (b) actuatable light source means mounted within the head, for generating an incident light beam, and for directing the incident beam along a light path towards a reference plane located exteriorly of the head, and towards a bar code symbol located in the vicinity of the reference plane to thereby generate reflected light of variable intensity which travels away from the symbol and back towards the head;

    (c) actuatable scanning means mounted within the head, for scanning at least one of the incident beam and the reflected light across the bar code symbol;

    (d) actuatable sensor means mounted within the head, for detecting the variable light intensity of the reflected light, and for generating an electrical signal indicative of the detected light intensity;

    (e) actuatable signal processing means mounted within the head, for processing the electrical signal to generate therefrom data descriptive of the bar code symbol; and

    (f) control means for substantially simultaneously actuating all the actuatable means in the head during symbol reading, and for substantially simultaneously deactuating all the actuatable means in the head when the symbol is not being read, whereby power consumption to the actuatable means in the head is substantially minimized.

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