Image processing apparatus, method of controlling the same, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorKiyokazu Umimura
Life of this patent
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Abstract
An image processing apparatus comprises a CPU for controlling the image processing apparatus and a microcomputer that verifies alteration of a program that is stored in a nonvolatile memory and that the CPU executes, and that outputs a notification signal that indicates the verification result. The image processing apparatus comprises a power source control unit for controlling a power source of the image processing apparatus, and the power source control unit, when the image processing apparatus is activated, supplies power to the microcomputer, and when a notification signal outputted from the microcomputer is received, holds the verification result that the notification signal indicates and shuts off the supply of power to the microcomputer.
Claims10
An image processing apparatus, comprising:
- a control unit configured to control the image processing apparatus;
- a verification unit configured to verify an alteration of a program that is stored in a nonvolatile memory and that the control unit executes, and to output a notification signal indicating a verification result;
- and
- a power source control unit configured to control a power source of the image processing apparatus, and, when the image processing apparatus activates, to supply power to the verification unit, and to, when a notification signal outputted from the verification unit is received, hold a verification result that the notification signal indicates and shut off the supply of power to the verification unit.
A method of controlling an image processing apparatus that comprises a control unit for controlling an apparatus, a verification unit for verifying an alteration of a program that is stored in a nonvolatile memory and that the control unit executes, and outputting a notification signal indicating a verification result, and a power source control unit for controlling a power source of the apparatus, the method comprising:
- in the power source control unit,
- when the image processing apparatus activates, supplying power to the verification unit and
- when a notification signal outputted from the verification unit is received, holding a verification result that the notification signal indicates and shutting off the supply of power to the verification unit.
A non-transitory computer-readable storage medium storing a computer program for causing a computer to execute a method of controlling an image processing apparatus that comprises a control unit for controlling an apparatus, a verification unit for verifying an alteration of a program that is stored in a nonvolatile memory and that the control unit executes, and outputting a notification signal indicating a verification result, and a power source control unit for controlling a power source of the apparatus, the method comprising:
- in the power source control unit,
- when the image processing apparatus activates, supplying power to the verification unit and
- when a notification signal outputted from the verification unit is received, holding a verification result that the notification signal indicates and shutting off the supply of power to the verification unit.
Dependencies are inferred from the claim text.