Patent ID: 6175428
Filing Date: 2001-01-16
Classification: H04N

Abstract:
An alignment error correcting apparatus for a scanner, the apparatus comprising:a central processing unit generating a first control signal, said first control signal corresponding to an execution of a correcting routine correcting scanning alignment error, a reading of a test pattern, a recording of the test pattern on a recordable medium, a scanning of the test pattern when the test pattern is recorded on the recordable medium, and a correcting of a scanning alignment error;a print driver unit being coupled to said central processing unit, generating a second control signal, said second control signal corresponding to the recording of the test pattern on the recordable medium, and corresponding to a feeding of the recordable medium bearing the test pattern to a predetermined scanning position;a printing unit being coupled to said print driver, receiving said second control signal from said print driver, recording the test pattern on the recordable medium in response to said second control signal, and then performing the feeding of the recordable medium bearing the test pattern to the predetermined scanning position in response to said second control signal;an image processing unit being coupled to said central processing unit, generating a third control signal in response to said first control signal, said third control signal corresponding to the scanning of the test pattern recorded on the recordable medium; anda shuttle scanner unit being coupled to said image processing unit, scanning the test pattern recorded on the recordable medium and producing first image data in response to said third control signal, the first image data corresponding to the test pattern recorded on the recordable medium.