US PATENT SUBCLASS 235 / 462.1
.~.~.~.~ Means to decode a 2-D bar code

Current as of: June, 1999
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435  DF  CODED RECORD SENSORS {9}
439  DF  .~ Particular sensor structure {8}
454  DF  .~.~ Optical {10}
462.01  DF  .~.~.~ Bar code {20}
462.1.~.~.~.~ Means to decode a 2-D bar code {1}
462.11  DF  .~.~.~.~.~> Including an imager (e.g., CCD or camera-type reader)

DEFINITION

Classification: 235/462.1

Means to decode a 2-D bar code:

(under subclass 462.01) Subject matter including means to read a two-dimensional bar code.

(1) Note. This subclass includes means to decode bar code symbols in either binary images (images represented in two levels, e.g., high or low) or gray-scale images (images consisting of an array of pixels which can have more than two

values).

(2) Note. A pixel is the smallest distinguishable and resolvable area in an image. Many pixels in a line going in one direction are known as the primary or fast scan and others going in a perpendicular direction are known as the secondary or slow scan direction.

SEE OR SEARCH THIS CLASS, SUBCLASS:

462.07, for a bar code reader with means to read a 2-D bar code and a 1-D bar code.

462.09, for location of a 2-D bar code.

SEE OR SEARCH CLASS 382, Image Analysis,

237, for gray level to binary image coding.