Patent ID: 6072912
Filing Date: 2000-06-06
Classification: H04N

Abstract:
An image reading system for reading an original and producing tone data representative of the original, the system comprising:an image scanner for reading an original and for producing tone data, the image scanner including:an image sensor capable of detecting a tone and of producing tone data representative of the detected tone;correction data production means for controlling the image sensor to read a predetermined tone and to produce correction data representative of the predetermined tone;original data production means for controlling the image sensor to read an original desired to be read and to produce tone data representative of the original; anddata transferring means for transferring the correction data and the tone data; anda host computer for receiving the correction data and the tone data, the host computer including:reception means for receiving the correction data and the tone data transferred from the image scanner; andcorrection means for correcting the tone data using the correction data.