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Bar code reader and game set using the same

  • US 5,331,141 A
  • Filed: 01/11/1993
  • Issued: 07/19/1994
  • Est. Priority Date: 05/10/1991
  • Status: Expired due to Fees
First Claim
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1. A bar code reader for reading bar code data from a card-shaped bar code record medium on which a bar code is formed by alternately arranging first bars having a relatively bright color and second bars having a relatively dark color which represents a front identification symbol and a rear identification symbol and coded data arranged between the front identification symbol and the rear identification symbol, said coded data depending on the width of each of the bars, comprising:

  • an optical system having a light emitting portion and a light receiving portion for optically detecting a change in the color of each of the bars as said bar code record medium moves in relation to the optical system;

    an aperture for regulating the relative positional relationship between said bar code and said optical system so that the longitudinal direction of each of the bars in said bar code is approximately perpendicular to the direction of movement of said bar code record medium;

    a counter for generating count value data for each detected bar corresponding to the width of each bar;

    temporary storing means for temporarily storing the count value data for each bar;

    judging means for judging if noise is included in the bar code data read from said bar code record medium depending on whether the total number of bars for which count value data are stored coincides with a predetermined number of bars; and

    decoding means for decoding the bar code data read from said bar code record medium on the basis of each of said count value data stored in said temporary storing means in response to a judgment by said judging means that no noise is included in said bar code data.

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