INFORMATION PROCESSING DEVICE AND CONTROL METHOD FOR THE SAME

• US 20200133375A1
• Filed: 10/24/2019
• Published: 04/30/2020
• Est. Priority Date: 10/26/2018
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Kobayashi, Yo
• Granted Patent: US 11,181,963 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 1/24 Resetting means
• CPC Class Codes: G06F 1/3228 Monitoring task completion, e.g. by use of idle timers, stop commands or wait commands
• CPC Class Codes: G06F 1/3234 Power saving characterised by the action undertaken
• CPC Class Codes: G06F 1/3284 Power saving in printer
• CPC Class Codes: G06F 3/1219 with regard to consumables, e.g. ink, toner, paper
• CPC Class Codes: G06F 3/1229 Printer resources management or printer maintenance, e.g. device status, power levels
• CPC Class Codes: G06F 3/1279 Controller construction, e.g. aspects of the interface hardware
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

An information processing device shifts to first and second power states and includes an output unit to output an operation stop signal, and a device to receive the operation stop signal and to shift to an operation stop state based on the operation stop signal, and to shift to an electric power saving mode where less power is consumed than in the operation stop state on condition that the operation stop signal has not been input. A signal control unit provides control that prevents the operation stop signal from being input to the device when the information processing device shifts to the second power state. The signal control unit controls the operation stop signal when a restart unit restarts the information processing device.

Claims

1. An information processing device that shifts to at least a first power state and a second power state where less power is consumed than in the first power state, the information processing device comprising:

an output unit configured to output an operation stop signal;

a device configured to receive the operation stop signal output from the output unit, to shift to an operation stop state based on the operation stop signal, and to shift to an electric power saving mode where less power is consumed than in operation stop state at least on condition that the operation stop signal has not been input;

a signal control unit configured to provide control that prevents the operation stop signal from being input to the device when the information processing device shifts to the second power state; and

a restart unit configured to restart the information processing device based on a predetermined condition,

wherein the signal control unit controls the operation stop signal to be input to the device when the restart unit restarts the information processing device.

2. The information processing device according to claim 1, further comprising a storage unit configured to store information indicating a power state of the information processing device,

wherein the signal control unit provides control to prevent the operation stop signal from being input to the device in a case where the information indicates the second power state.

3. The information processing device according to claim 2, wherein, even in a case where the information stored in the storage unit indicates the second power state, the signal control unit controls the operation stop signal to be input to the device when the restart unit restarts the information processing device.

4. The information processing device according to claim 1, further comprising:

a storage unit configured to store information indicating a power state of the information processing device; and

a power control unit configured to change the power state of the information processing device based on the information stored in the storage unit.

5. The information processing device according to claim 1, further comprising a calculation unit configured to access the device,

wherein the device shifts to the electric power saving mode at least on conditions that the operation stop signal has not been input and that a predetermined period of time has elapsed without any access from the calculation unit.

6. The information processing device according to claim 5,

wherein the calculation unit outputs information indicating a power state of the information processing device, and

wherein the signal control unit provides control to prevent the operation stop signal from being input to the device based on the information indicating the power state of the information processing device output from the calculation unit.

7. The information processing device according to claim 1,

wherein the information processing device shifts to a third power state where less power is consumed than in the second power state, and

wherein, in a case where information indicating a power state of the information processing device indicates third power state, the signal control unit controls the operation stop signal to be input to the device.

8. The information processing device according to claim 7, wherein supply of power to the device is stopped in the third power state.

9. The information processing device according to claim 1, wherein the device is an embedded Multi-Media Card.

10. The information processing device according to claim 1, wherein the operation stop signal is a reset signal.

11. The information processing device according to claim 1, further comprising a print unit configured to print an image on a recording medium.

12. The information processing device according to claim 1, further comprising a read unit configured to read a document image and to output image data.

13. A control method for an information processing device that shifts to at least a first power state and a second power state where less power is consumed than in the first power state, and that includes a device configured to receive an operation stop signal, to shift to an operation stop state based on the operation stop signal, and to shift to an electric power saving mode where less power is consumed than in the operation stop state, at least on condition that the operation stop signal has not been input, the control method comprising:

outputting an operation stop signal;

providing control to prevent the operation stop signal from being input to the device based on information indicating a power state of the information processing device;

restarting the information processing device based on a predetermined condition; and

controlling the operation stop signal to be input to the device when the information processing device is restarted.