Information processing system, control method, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorKenichi Shirai
Life of this patent
Estimating the term…
Abstract
A first hash value calculated by a print server based on print data and a second hash value calculated by an image processing apparatus by using the print data are compared, and printing processing using the print data is cancelled in a case where it is determined that the first hash value and the second hash value are not the same.
Claims12
An information processing system comprising:
- a print server configured to convert document data into print data;
- and
- an image processing apparatus configured to sequentially acquire the print data and execute printing processing,
- wherein the print server includes a first calculation unit configured to calculate a first hash value based on the print data,
- wherein the image processing apparatus includes;
- a second calculation unit configured to calculate a second hash value by using the print data,
- a comparison unit configured to compare the first hash value and the second hash value, and
- a cancellation unit configured to cancel printing processing using the print data in a case where the comparison unit determines that the first hash value and the second hash value are not the same.
A control method of an information processing system including a print server configured to convert document data into print data and an image processing apparatus configured to sequentially acquire the print data and execute printing processing, the control method comprising:
- calculating, as a first calculation, a first hash value based on the print data with the print server;
- calculating, as a second calculation, a second hash value by using the print data with the image processing apparatus;
- comparing the first hash value and the second hash value;
- and
- cancelling printing processing using the print data in a case where it is determined in the comparing that the first hash value and the second hash value are not the same.
A control method of an image processing apparatus configured to sequentially acquire print data and execute printing processing, the control method comprising:
- calculating a second hash value by using the print data with the image processing apparatus;
- comparing a first hash value received from a print server configured to convert document data into the print data with the second hash value;
- and
- cancelling printing processing using the print data in a case where the comparing determines that the first hash value and the second hash value are not the same.
A non-transitory storage medium storing a program which causes a computer to function as an image processing apparatus configured to sequentially acquire print data and execute printing processing, the image processing apparatus comprising:
- a calculation unit configured to calculate a second hash value by using the print data;
- a comparison unit configured to compare a first hash value received from a print server that converts document data into the print data and the second hash value;
- and
- a cancellation unit configured to cancel printing processing using the print data in a case where the comparison unit determines that the first hash value and the second hash value are not the same.
Dependencies are inferred from the claim text.