Patent ID: 6016960
Filing Date: 2000-01-25
Classification: G06K

Abstract:
In a symbol reading apparatus capable of storing a reflectance signal produced from a data collection symbol, the stored reflectance signal having a plurality of lobes representing peaks and valleys in the signal, a method of processing and decoding the reflectance signal comprising:selecting a set of lobes from the plurality of lobes, the set of lobes corresponding to a portion of the reflectance signal;determining at least a first measurement with respect to at least some of the lobes in the set of lobes;identifying a plurality of rules in a set of rules that apply to the set of lobes and determined first measurements, wherein some of the plurality of rules have a higher priority over some other of the plurality of rules;selecting at least one of the plurality of rules;refining the portion of the reflectance signal based on the selected rule;decoding the portion of the reflectance signal; andrepeating the steps of selecting, determining, identifying, selecting and decoding for the reflectance signal.