Information processing apparatus, control method of information processing apparatus, and program

1. An information processing apparatus comprising:

an interface;

a first load device;

a battery capable of supplying power to the first load device;

a controller; and

a plurality of power transmission paths including:

a first power transmission path configured to connect the interface and the controller without going through the battery;

a second power transmission path configured to connect the interface and the first load device without going through the battery; and

a third power transmission path configured to connect the interface and the battery,

wherein the controller is configured to:

start up the controller with power supplied via the interface and the first power transmission path when receiving power having a first power amount from an external device via the interface;

request a second power amount greater than the first power amount to the external device via the interface after starting up of the controller;

determine whether it is possible to receive power supply of the second power amount from the external device via the interface after requesting the second power amount;

in a case where it is determined that it is possible to receive power supply of the second power amount from the external device via the interface in the determination of receiving the power supply, supply power supplied from the external device via the interface to the first load device via the second power transmission path to start up the first load device when power having the second power amount is supplied from the external device via the interface as a result of the request for the second power amount; and

in a case where it is not determined that it is possible to receive power supply of the second power amount from the external device via the interface in the determination of receiving the power supply, supply the power supplied from the external device via the interface to the battery via the third power transmission path.

2. The information processing apparatus according to claim 1 , further comprising:

a second load device,

wherein the controller is configured to determine whether the second power amount is equal to or greater than a first startup power amount required to start both the first load device and the second load device, and

in a case where the controller determines that the second power amount is equal to or greater than the first startup power amount in the determination whether the second power amount is equal to or greater than the first startup power amount, the controller starts up both the first load device and the second load device in the start up of the first load device.

3. The information processing apparatus according to claim 1 , further comprising:

a second load device,

wherein the controller is configured to determine whether the second power amount is equal to or greater than a second startup power amount which is less than a first startup power amount required to start up both the first load device and the second load device, and

in a case where the controller determines that the second power amount is equal to or greater than the second startup power amount in the determination whether the second power amount is equal to or greater than the second startup power amount, the controller starts up the first load device in the start up of the first load device.

4. The information processing apparatus according to claim 1 , wherein the first load device is a display device.

5. The information processing apparatus according to claim 2 , wherein the second load device is an image processing unit performing image processing based on image data.

6. The information processing apparatus according to claim 1 , wherein the first load device is a display device, and

in a case where the controller starts up the display device in the start up of the first load device, the controller is configured to control the display device to display at least one of:

a required power amount requested to the external device;

a suppliable power amount that is a maximum amount of power suppliable by the external device; and

power reception state information indicating a state of the information processing apparatus when receiving the required power amount.

7. The information processing apparatus according to claim 1 , wherein the plurality of power transmission paths includes a fourth power transmission path configured to connect the controller and the battery,

the information processing apparatus further comprises a switch device switching connection between the first power transmission path and the controller, and connection between the fourth power transmission path and the controller, and

the switch device is an electromagnetic open/close switch connecting the fourth power transmission path to the controller when power is supplied from the battery and connects the second power transmission path to the controller when power is not supplied from the battery.

8. The information processing apparatus according to claim 1 , wherein the controller includes a plurality of processing units,

the plurality of processing units include a communication processing unit configured to request the second power amount, and

the controller is configured to start up the communication processing unit with priority in the plurality of processing units in the start up of the controller.

9. The information processing apparatus according to claim 1 , wherein the interface is an interface for performing power transfer and communication with connection in conformity with to a universal serial bus (USB) standard.

10. The information processing apparatus according to claim 9 , wherein when the interface performs a communication in conformity with the universal serial bus (USB) standard with the controller, the interface is connected to the controller as a communication device in a communication role of the universal serial bus (USB) standard.

11. A control method of an information processing apparatus including an interface, a first load device, a battery capable of supplying power to the first load device, a controller, and a plurality of power transmission paths including a first power transmission path configured to connect the interface and the controller without going through the battery, a second power transmission path configured to connect the interface and the first load device without going through the battery, and a third power transmission path configured to connect the interface and the battery, the method comprising:

starting up the controller with power supplied via the interface and the first power transmission path when receiving power having a first power amount from an external device via the interface;

requesting a second power amount greater than the first power amount to the external device via the interface after starting up the controller;

determining whether it is possible to receive power supply of the second power amount from the external device via the interface after requesting the second power amount;

in a case where it is determined that it is possible to receive the power supply of the second power amount from the external device via the interface in the determination of receiving the second power amount, supplying power supplied from the external device via the interface to the first load device via the second power transmission path to start up the first load device when power having the second power amount is supplied from the external device via the interface as a result of requesting the second power amount; and

in a case where it is not determined that it is possible to receive the power supply of the second power amount from the external device via the interface in the determination of receiving the second power amount, supplying the power supplied from the external device via the interface to the battery via the third power transmission path.

12. The control method according to claim 11 , wherein the information processing apparatus further includes a second load device,

wherein the method further comprises:

determining whether the second power amount is equal to or greater than a first startup power amount required to start both the first load device and the second load device, and

in a case where it is determined that the second power amount is equal to or greater than the first startup power amount in the determination whether the second power amount is equal to or greater than the first startup power amount, starting up both the first load device and the second load device in the start up of the first load device.

13. The control method according to claim 11 , wherein the information processing apparatus further includes a second load device,

wherein the method further comprises:

determining whether the second power amount is equal to or greater than a second startup power amount which is less than a first startup power amount required to start up both the first load device and the second load device, and

in a case where it is determined that the second power amount is equal to or greater than the second startup power amount in the determination whether the second power amount is equal to or greater than the second startup power amount, starting up the first load device in the start up of the first load device.

14. The control method according to claim 11 , wherein the first load device is a display device.

15. The control method according to claim 12 , wherein the second load device is an image processing unit performing image processing based on image data.

16. A non-transitory computer readable medium storing a program causing a computer to execute a process for controlling an information processing apparatus including an interface, a first load device, a battery capable of supplying power to the first load device, a controller, and a plurality of power transmission paths including a first power transmission path configured to connect the interface and the controller without going through the battery, a second power transmission path configured to connect the interface and the first load device without going through the battery, and a third power transmission path configured to connect the interface and the battery, the process comprising:

starting up the controller with power supplied via the interface and the first power transmission path when receiving power having a first power amount from an external device via the interface;

requesting a second power amount greater than the first power amount to the external device via the interface after starting up the controller;

determining whether it is possible to receive power supply of the second power amount from the external device via the interface after requesting the second power amount;

in a case where it is determined that it is possible to receive power supply of the second power amount from the external device via the interface in the determination of receiving the second power amount, supplying power supplied from the external device via the interface to the first load device via the second power transmission path to start up the first load device when power having the second power amount is supplied from the external device via the interface as a result of requesting the second power amount; and

in a case where it is not determined that it is possible to receive power supply of the second power amount from the external device via the interface in the determination of receiving the second power amount, supplying the power supplied from the external device via the interface to the battery via the third power transmission path.

17. The non-transitory computer readable medium according to claim 16 , wherein the information processing apparatus further includes a second load device,

wherein the process further comprises:

determining whether the second power amount is equal to or greater than a first startup power amount required to start both the first load device and the second load device, and

in a case where it is determined that the second power amount is equal to or greater than the first startup power amount in the determination whether the second power amount is equal to or greater than the first startup power amount, starting up both the first load device and the second load device in the start up of the first load device.

18. The non-transitory computer readable medium according to claim 16 , wherein the information processing apparatus further includes a second load device,

wherein the process further comprises:

determining whether the second power amount is equal to or greater than a second startup power amount which is less than a first startup power amount required to start up both the first load device and the second load device, and

in a case where it is determined that the second power amount is equal to or greater than the second startup power amount in the determination whether the second power amount is equal to or greater than the second startup power amount, starting up the first load device in the start up of the first load device.

19. The non-transitory computer readable medium according to claim 16 , wherein the first load device is a display device.

20. The non-transitory computer readable medium according to claim 17 , wherein the second load device is an image processing unit performing image processing based on image data.