INFORMATION PROCESSING DEVICE AND CONTROL METHOD THEREOF

• Main Author: ONO SHINICHI
• Format: Patent
• Language: English; Japanese
• Published: 04.06.2020
• Subjects: CALCULATING; COMPUTING; CORRECTION OF TYPOGRAPHICAL ERRORS; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC DIGITAL DATA PROCESSING; ELECTRICITY; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; LINING MACHINES; PERFORMING OPERATIONS; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

To suppress increase of power consumption and to inform that means to perform tampering detection of a boot code is normally operating.SOLUTION: An information processing device drives a notification section in a first power state when a second control section verifies a boot code executed by a first control section, informs of abnormality of the boot code by driving the notification section in a predetermined power state if there is abnormality of the boot code, and makes the notification section to be in a second power state being lower than the first power state if there is not abnormality of the boot code.SELECTED DRAWING: Figure 5 【課題】 消費電力の増大を抑制し、ブートコードの改竄検知を行う手段が正常に動作していることを通知する。【解決手段】 第１制御部が実行するブートコードを第２制御部が検証する際に、通知部を第１の電力状態で駆動し、ブートコードの異常があれば通知部を所定の電力状態で駆動することでブートコードの異常を通知し、ブートコードの異常がなければ通知部を第１の電力状態よりも低い第２の電力状態とする。【選択図】 図５