Patent ID: 7143941

Claim:
An optoelectronic device for acquiring machine-readable symbols, comprising: a sensor array comprising a plurality of light sensing elements, the light sensing elements producing a signal representative a quantity of light incident on the respective light sensing element; and a scanning control circuit coupled to selectively sample the respective signals from the light sensing elements of the sensor array and operable to change a resolution of the sensor array in a direction perpendicular to a scanning direction, between at least a first resolution during at least a first sampling pass and a second resolution during at least a second sampling pass, the second sampling pass following the first sampling pass, wherein the sensor array is a two-dimensional array of light sensing elements arranged in a plurality of rows, the light sensing elements in each of the rows extending in the scanning direction, and the plurality of rows arranged in the direction perpendicular to the scanning direction with respect to one another, the light sensing elements in a first one of the rows having a first height measured in the direction perpendicular to the scanning direction, and the light sensing elements in a second one of the rows having a second height measured in the direction perpendicular to the scanning direction, the second height different from the first height.