Patent ID: 7961361
Filing Date: 2011-06-14
Classification: H04N

Abstract:
1. An image reading apparatus comprising: a plurality of reading units configured to read a read object, output a result of reading as read data, and respectively operate at different timings; a reference data generation unit configured to acquire first read data as a result of reading of a first read object as the read object by the plurality of reading units, acquire an operation state of the plurality of reading units during the reading of the first reading object, generate reference data based on the first read data, associate the operation state with the reference data obtained in the operation state and store them; and a correction unit configured to acquire second read data as a result of reading of a second read object as the read object different from the first read object by the plurality of reading units, acquire an operation state of the plurality of reading units during the reading of the second reading object, acquire the reference data corresponding to the operation state, and correct the second read data based on the reference data, wherein the plurality of reading units include a first reading unit and a second reading unit, the operation state is one of a first state in which the first reading unit and the second reading unit simultaneously perform reading, and a second state in which only the first reading unit performs reading, the reference data includes first reference data generated based on the first read data in the first state, and second reference data generated based on the first read data in the second state, and the correction unit corrects the second read data in the first state based on the first reference data, and corrects the second read data in the second state based on the second reference data.