System for scanning documents without loss of image data

Abstract From the Canadian patent

Abstract, A document processing system directs documents at a high rate of speed past an optical scanner which captures written information on the documents as video image data. The video image data is directed over a data channel to a host computer system where the data is stored on a mass data storage device for subsequent retrieval. A buffer is provided between the scanner and the data channel, which receives data a rate which varies in relation to the amount of information present on the documents. Data is extracted from the buffer at a rate which is limited by the host computers channel transfer rate. A control means is associated with the buffer and is operable for controlling a …