Information processing apparatus and control method of the information processing apparatus with a converter supplying power when a PFC circuit is off

Patent metadata

Field	Value
Publication number	US-10757283-B2
Application number	US-201715794615-A
Country	US
Kind code	B2
Filing date	Oct 26, 2017
Priority date	Nov 8, 2016
Publication date	Aug 25, 2020
Grant date	Aug 25, 2020

Abstract

The information processing apparatus according to an embodiment of the present invention includes a power factor correction (PFC) circuit, an interface capable of connecting an optional device, and a power controller capable of turning off the PFC circuit. The power controller does not turn off the PFC circuit while a predetermined optional device is connected to the interface.

First claim

What is claimed is:

1. An information processing apparatus capable of operating in a predetermined power-saving mode, the apparatus comprising:
a converter that converts input AC (alternating current) power into DC (direct current) power and includes a power factor correction (PFC) circuit to output power with a corrected power factor;
a storage device that stores information indicating a model type of the information processing apparatus; and
a power controller that outputs a PFC control signal to the PFC circuit based on the information stored in the storage device,
wherein the PFC circuit outputs power with the corrected power factor when the PFC control signal is input and the PFC circuit outputs power with an uncorrected power factor when the PFC control signal is not input.

2. The information processing apparatus according to claim 1 , further comprising a processor and a memory used as a work area for the processor,
wherein the memory operates in a self-refresh mode in the predetermined power-saving mode.

3. The information processing apparatus according to claim 2 , further comprising:
an interface capable of connecting to a specific device included in the information processing apparatus,
wherein the specific device connected to the interface is supplied with power in the predetermined power-saving mode.

4. The information processing apparatus according to claim 3 , wherein the specific device is a fax machine.

5. The information processing apparatus according to claim 1 , further comprising a processor configured (i) to determine whether the information stored in the storage device indicates a model type of an information processing apparatus that includes a specific device, and (ii) to set a setting value that outputs the PFC control signal to the PFC circuit while the information processing apparatus operates in at least the predetermined power-saving mode,
wherein the power controller outputs the PFC control signal to the PFC circuit based on the setting value while the information processing apparatus operates in at least the predetermined power-saving mode.

6. The information processing apparatus according to claim 1 , further comprising a printer to which no power is supplied in a case where the information processing apparatus operates in the predetermined power-saving mode.

7. The information processing apparatus according to claim 1 , wherein the power controller outputs the PFC control signal to the PFC circuit in a case where the information stored in the storage device indicates a model type of an information processing apparatus not including a specific device.

8. The information processing apparatus according to claim 1 , wherein the power controller is capable of outputting the PFC control signal to the PFC circuit when the information processing apparatus operates in the predetermined power-saving mode if the information stored in the storage device indicates a model type of an information processing apparatus that does not include a specific device, and is configured to not output the PFC control signal to the PFC circuit when the information processing apparatus is in the predetermined power-saving mode if the information stored in the storage device indicates a model type of an information processing apparatus that includes the specific device.

9. The information processing apparatus according to claim 1 , wherein the power controller is capable of outputting the PFC control signal to the PFC circuit, so that the DC power converted from the input AC power is supplied from the converter without correcting a power factor about the AC power by the PFC circuit while the information processing apparatus operates in the predetermined power-saving mode.

10. The information processing apparatus according to claim 1 , wherein the PFC circuit is configured to correct a power factor about the AC power while the PFC circuit is on, and not to correct the power factor about the AC power while the PFC circuit is off.

11. A control method of an information processing apparatus capable of operating in a predetermined power-saving mode, the apparatus comprising a converter that converts input AC (alternating current) power into DC (direct current) power and includes a power factor correction (PFC) circuit to output power with a corrected power factor, a storage device that stores information indicating a model type of the information processing apparatus, and a power controller that outputs a PFC control signal to the PFC circuit based on the information stored in the storage device, the method comprising the steps of:
outputting, by the PFC circuit, power with the corrected power factor when the PFC control signal is input; and
outputting, by the PFC circuit, power with an uncorrected power factor when the PFC control signal is not input.

12. The control method of an information processing apparatus according to claim 11 , wherein the information processing apparatus can transit to the predetermined power-saving mode.

13. The control method of an information processing apparatus according to claim 12 , wherein the information processing apparatus comprises an interface capable of connecting to a specific device included in the information processing apparatus, and
wherein the specific device connected to the interface is supplied with power in the predetermined power-saving mode.

14. The control method of an information processing apparatus according to claim 13 , wherein the specific device is a fax machine.

15. An information processing apparatus capable of operating in a predetermined power-saving mode, the apparatus comprising:
a converter that converts input AC (alternating current) power into DC (direct current) power, and includes a power factor correction (PFC) circuit to output power with a corrected power factor;
a memory configured to store information indicating a model type of the information processing apparatus; and
a power controller that outputs a PFC control signal to the PFC circuit based on the information stored in the memory,
wherein the PFC circuit outputs power with the corrected power factor when the PFC control signal is input and the PFC circuit outputs power with an uncorrected power factor when the PFC control signal is not input.

16. The information processing apparatus according to claim 15 , further comprising a processor configured to cause the power controller to output the PFC control signal to the PFC circuit so that the DC power is supplied to at least one device included in the information processing apparatus in a state in which the power controller outputs the PFC control signal to the PFC circuit in the predetermined power-saving mode based on at least whether or not the model type indicated by the information stored in the memory indicates a model type where the at least one device includes a specific device.

17. The information processing apparatus according to claim 16 , wherein the processor is configured to set information for outputting the PFC control signal to the PFC circuit in the power controller, and
wherein the power controller is configured to output the PFC control signal to the PFC circuit based on the set information.

18. The information processing apparatus according to claim 15 , wherein the power controller is capable of outputting the PFC control signal to the PFC circuit to cause the predetermined power-saving mode in which the PFC circuit is off on a condition that the model type indicated by the information stored in the memory does not indicate the model type where at le

Assignees

• Canon Kk

Inventors

• Hashimoto Minoru

Classifications

• H02M1/4208

  Arrangements for improving power factor of AC input · CPC title

• H04N1/00896 Primary

  using a low-power mode, e.g. standby · CPC title

• H04N2201/0094

  Multifunctional device, i.e. a device capable of all of reading, reproducing, copying, facsimile transception, file transception · CPC title

• H04N1/00904

  Arrangements for supplying power to different circuits or for supplying power at different levels (H04N1/00896 takes precedence) · CPC title

• H04N1/00994

  Compensating for electric noise, e.g. electromagnetic interference · CPC title