Patent ID: 8199380
Filing Date: 2012-06-12
Classification: H04N

Abstract:
1. An image reading system, comprising: an image sensor having a plurality of sensor chips arranged in a main scanning direction, wherein each of the sensor chips of the image sensor is configured to receive light and store electrical charges corresponding to an amount of the received light and to produce analog image data; a controller coupled to the image sensor and configured to receive and process the analog image data from the image sensor and produce digital image data; wherein the controller comprises a reading controller that includes a clock provider configured to provide the image sensor with a first clock signal and control the timing at which the analog image data is transferred from the image sensor to the controller, and wherein the clock provider is configured to stop the first clock signal for a predetermined amount of time before each of the sensor chips output its analog image data; and a carriage housing the image sensor and configured to move along a sub-scanning direction, and a driving mechanism coupled to the carriage and the controller, wherein the driving mechanism includes a motor and an encoder configured to output pulses relative to the number of rotation of the motor; wherein rotation of the motor is controlled by the reading controller and movement of the carriage is controlled by the encoder.