Patent ID: 11914714
Assignee: CANON KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. A start-up method of an information processing apparatus including a first CPU, a second CPU, a first nonvolatile memory that stores a boot program to be executed by the first CPU, and a second nonvolatile memory that stores a first boot program and a second boot program for verifying a program, the start-up method comprising:
the first CPU executing the boot program stored in the first nonvolatile memory by, at a time of start-up,
wherein the first CPU determines whether or not a verification method indicating encryption is set in the first nonvolatile memory as a setting for verifying alteration of a program,
if the verification method has not been set, the first CPU executes the first boot program, and writes the setting of the verification method to the first nonvolatile memory,
when the setting of the verification method is written into the first nonvolatile memory, the first CPU restarts the information processing apparatus,
if the verification method has been set, the first CPU executes the second boot program in accordance with the setting, and
if the processing performed by the second boot program is normally ended, the second CPU starts up the information processing apparatus.