Patent ID: 8596539

Claim:
An imaging terminal comprising: an image sensor including an image sensor array having a plurality of pixels; a variable setting lens assembly for focusing light on the image sensor array, the variable setting lens assembly having a first lens setting at which the terminal has a first plane of optimum focus and a second lens setting at which the terminal has a second plane of optimum focus; wherein the imaging terminal is operative to capture a succession of frames, the succession of frames including a first frame, a second frame, a third frame and a fourth frame, the second frame having an exposure period subsequent to an exposure period of the first frame, the third frame having an exposure period subsequent to an exposure period of second frame, the fourth frame having an exposure period subsequent to an exposure period of the third frame; wherein the imaging terminal is operative so that the first frame and the third frame are exposed with the lens assembly at the first lens setting and is further operative so that the second frame and the fourth frame are exposed with the lens assembly at the second lens setting; wherein there is associated with the first lens setting a first exposure determination process in a manner that the first exposure determination process is active for determination of exposure periods of the first and third frames during which the lens assembly is at the first lens setting, and wherein there is associated with the second lens setting a second exposure determination process in a manner that the second exposure determination process is active for determination of exposure periods of the second and fourth frames during which the lens assembly is at the second lens setting; and a processing unit for use in execution of the first exposure determination process and the second exposure determination process.