Abstract: A system prepares and dispenses non gas-infused and gas-infused beverages including a gas source, a pressurizable container connected to the gas source to receive a first flow of gas, a gas infusion tank connected to the gas source to receive a second flow of gas, a first dispensing tap that receives a portion of preprocessed beverage stored in the pressurizable container that flows under pressure from a portion of the first flow of gas to dispense a non gas-infused beverage from the first dispensing tap, and a second dispensing tap that receives gas-infused beverage from the gas infusion vessel to dispense the gas-infused beverage by the second dispensing tap, the gas-infused tank receiving a portion of the preprocessed beverage from the pressurizable container to infuse the preprocessed beverage in the gas infusion vessel with at least a portion of the second flow of gas.

Abstract: A system prepares and dispenses non gas-infused and gas-infused beverages including a gas source, a pressurizable container connected to the gas source to receive a first flow of gas, a gas infusion tank connected to the gas source to receive a second flow of gas, a first dispensing tap that receives a portion of preprocessed beverage stored in the pressurizable container that flows under pressure from a portion of the first flow of gas to dispense a non gas-infused beverage from the first dispensing tap, and a second dispensing tap that receives gas-infused beverage from the gas infusion vessel to dispense the gas-infused beverage by the second dispensing tap, the gas-infused tank receiving a portion of the preprocessed beverage from the pressurizable container to infuse the preprocessed beverage in the gas infusion vessel with at least a portion of the second flow of gas.

Abstract: A method for generating a tonal response curve for a scanner includes (a) directing light from the scanner to a calibration target having a single uniform neutral tone; (b) measuring with the scanner an amount of incident light reflected from the calibration target to obtain a simulated optical density value associated with the calibration target and the amount of incident light; (c) changing the amount of the incident light; (d) repeating acts (b) and (c) until a predetermined number of simulated optical density values are accumulated; and (e) generating the tonal response curve for the scanner by matching each of the simulated optical density values with one of a plurality of reference optical densities.

Abstract: A method for compensating for a contaminated calibration target used in calibrating a scanner having a plurality of sensor pixels includes (a) scanning a calibration target to generate a respective plurality of calibration data samples for each sensor pixel of the plurality of sensor pixels; (b) for calibration data samples associated with a current sensor pixel of the plurality of sensor pixels, removing any calibration data sample that corresponds to a region of calibration target contamination, leaving filtered calibration data samples; (c) determining a gain value for the current sensor pixel based on the filtered calibration data samples; (d) repeating acts (b) and (c) for a next sensor pixel until a respective gain value is determined for each of the plurality of sensor pixels; and (e) applying the determined gain values to the plurality of sensor pixels for use in subsequent image scanning by the scanner.

Abstract: Method and apparatus of reducing aliasing when scanning a screen printed document including removing high frequency image information at the input of an image sensor prior to scanning. Removing high frequency image information increases the effective sampling frequency of the scanner thereby reducing the effects of aliasing by. Removal of high frequency image information is achieved by adjusting the focal position of the image sensor from a focused position to a defocused position using a mechanism for moving the image sensor or scan bar relative to either the scan bed or a document to be scanned.

Abstract: A method for compensating for a contaminated calibration target used in calibrating a scanner having a plurality of sensor pixels includes (a) scanning a calibration target to generate a respective plurality of calibration data samples for each sensor pixel of the plurality of sensor pixels; (b) for calibration data samples associated with a current sensor pixel of the plurality of sensor pixels, removing any calibration data sample that corresponds to a region of calibration target contamination, leaving filtered calibration data samples; (c) determining a gain value for the current sensor pixel based on the filtered calibration data samples; (d) repeating acts (b) and (c) for a next sensor pixel until a respective gain value is determined for each of the plurality of sensor pixels; and (e) applying the determined gain values to the plurality of sensor pixels for use in subsequent image scanning by the scanner.

Abstract: A method for generating a tonal response curve for a scanner includes (a) directing light from the scanner to a calibration target having a single uniform neutral tone; (b) measuring with the scanner an amount of incident light reflected from the calibration target to obtain a simulated optical density value associated with the calibration target and the amount of incident light; (c) changing the amount of the incident light; (d) repeating acts (b) and (c) until a predetermined number of simulated optical density values are accumulated; and (e) generating the tonal response curve for the scanner by matching each of the simulated optical density values with one of a plurality of reference optical densities.