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An efficient transmission method of scanned image data

IP.com Disclosure Number: IPCOM000013583D
Original Publication Date: 2001-Jun-26
Included in the Prior Art Database: 2003-Jun-18
Document File: 1 page(s) / 38K

Publishing Venue

IBM

Abstract

Disclosed is a method to transmit image data fast from a scanner device to a receiver device via a network. Generally a scanner scans from a form top edge and transmits the data to a receiver device. If the scanner transmits a piece of the image data while scanning, the data will begin to arrive to the receiver before finishing all the scanning. If an mark that indicates a kind of the form is preprinted on the form to be scanned, the receiver device can recognize the image of the mark and call a application program that is associated to process the form data. Earlier the image data arrives, earlier the receiver device calls the application program. So it improves a system performance to begin transmitting the image data before finishing all the scanning. But continuing to transmit the small divided data to the scan end would lower a transmit efficiency because of an overhead of the network protocol, such as TCP/IP. So the amount of the image data that is untransmitted will be increased in the scanner device that is scanning a form and it will take much time for the receiver device to receive the last piece of the divided image data. The point of this disclosed is that to resolve this performance problem, the scanner transmits small pieces of the image data while scanning and it does all rest data when the scanning finishes. The size of one piece should be small and yet efficient value in the transmission media. For example in Ethernet, i will be multiple of 1460 bytes which is maximum length of one Ethernet packet. To archive this function the control program in the scanner is as follows; The scanner initializes the a next-save pointer in the memory and starts to scan.

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An efficient transmission method of scanned image data

   Disclosed is a method to transmit image data fast from a scanner device to a receiver device via a network.

Generally a scanner scans from a form top edge and transmits the data to a receiver device. If the scanner transmits a piece of the image data while scanning, the data will begin to arrive to the receiver before finishing all the scanning. If an mark that indicates a kind of the form is preprinted on the form to be scanned, the receiver device can recognize the image of the mark and call a application program that is associated to process the form data. Earlier the image data arrives, earlier the receiver device calls the application program. So it improves a system performance to begin transmitting the image data before finishing all the scanning. But continuing to transmit the small divided data to the scan end would lower a transmit efficiency because of an overhead of the network protocol, such as TCP/IP. So the amount of the image data that is untransmitted will be increased in the scanner device that is scanning a form and it will take much time for the receiver device to receive the last piece of the divided image data.

The point of this disclosed is that to resolve this performance problem, the scanner transmits small pieces of the image data while scanning and it does all rest data when the scanning finishes. The size of one piece should be small and yet efficient value in the transmission medi...