Patent Number: 6,307,974

Title: Image processing apparatus, system, and method with adaptive transfer

Abstract: This invention is to transmit read image data to a host device using a transfer mode which guarantees a predetermined band and does not perform error check or retransmission time suitable for the original purpose of prescanning. When a prescanning instruction is received from a host computer (112), a scanner (115) is driven to read an original image, and thinning/interpolation and compression are performed. In addition, transfer through a communication interface USB to the host computer (112) is performed in the isochronous transfer mode which guarantees a predetermined band within a periodically continuous time and does not perform retransmission in response to error occurrence, thereby realizing high-speed transfer.

Inventors: Tsujimoto; Takuya (Kawasaki, JP)

Assignee: Canon Kabushika Kaisha

International Classification: G06K 9/00 (20060101); G06K 9/36 (20060101); H04L 12/66 (20060101); H04J 3/16 (20060101); G06K 009/36 (); G06K 009/00 (); H04L 012/66 (); H04J 003/16 ()

Expiration Date: 10/23/2018