COMMUNICATION DEVICE, COMMUNICATION METHOD, AND STORAGE MEDIUM

• US 20170215066A1
• Filed: 12/30/2016
• Published: 07/27/2017
• Est. Priority Date: 01/26/2016
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Tachibana, Hideaki
• Granted Patent: US 10,182,348 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 63/18 using different networks or channels, e.g. using out of band channels cryptographic mechanisms or cryptographic arrangements for key distribution involving distinctive intermediate devices or communication paths H04L9/0827; cryptographic mechanisms or cryptographic arrangements for authentication using a plurality of channels H04L9/3215
• CPC Class Codes: H04W 12/04 Key management, e.g. using generic bootstrapping architecture [GBA]
• CPC Class Codes: H04W 72/30 Resource management for broadcast services
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

A communication device transmits a communication parameter to connect to a wireless network established by an access point to another communication device using information obtained from a captured image and stores the information obtained from the captured image. When the communication parameter is changed, the changed communication parameter is transmitted to the another communication device by reusing the stored information.

Claims

1. A communication device, comprising:

an image capturing unit configured to capture an image;

a transmission unit configured to transmit a communication parameter to connect to a wireless network established by an access point to another communication device using information obtained from the captured image; and

a storage unit configured to store the information obtained from the captured image,

wherein, when the communication parameter is changed after the communication parameter is transmitted to the another communication device, the transmission unit transmits the changed communication parameter to the another communication device by reusing the stored information.

2. The communication device according to claim 1, further comprising a determination unit configured to determine whether to reuse the stored information,

wherein, when the determination unit determines to reuse the information, the transmission unit transmits the changed communication parameter to the another communication device by reusing the stored information.

3. The communication device according to claim 2, further comprising a display unit configured to present a display to prompt a user whether to reuse the stored information,

wherein the determination unit determines whether to reuse the stored information based on a user'"'"'s response.

4. The communication device according to claim 2, wherein when the determination unit determines not to reuse the information, the transmission unit transmits the changed communication parameter to the another communication device using information obtained by recapturing the image by the image capturing unit.

5. The communication device according to claim 1, wherein the captured image is an image displayed on a display unit of the another communication device.

6. The communication device according to claim 1, wherein the information obtained from the captured image includes a public key used in an encrypted communication.

7. The communication device according to claim 6 wherein the transmission unit transmits the communication parameter, which is encrypted with the public key, to the another communication device.

8. The communication device according to claim 1, wherein the access point is a device different from the communication device and the another communication device.

9. The communication device according to claim 1 further comprising:

an instruction unit configured to instruct to change the communication parameter, and

a notification unit configured to notify a change request of the communication parameter to the access point when the instruction unit instructs to change the communication parameter.

10. The communication device according to claim 1, further comprising a reception unit configured to receive a change notification of the communication parameter from the access point.

11. The communication device according to claim. 1, wherein the wireless network is a wireless LAN compliant with IEEE 802.11.

12. The communication device according to claim 1, wherein the communication parameter includes at least an SSID, an encryption key, an encryption scheme, an authentication key, or an authentication scheme.

13. The communication device according to claim 1, wherein the image is a barcode or a two-dimensional code.

14. A communication method comprising:

transmitting a communication parameter to connect to a wireless network established by an access point to another communication device using information obtained from a captured image; and

storing the information obtained from the captured image,

wherein, when the communication parameter is changed after the communication parameter is transmitted to the another communication device, the changed communication parameter is transmitted to the another communication device by reusing the stored information.

15. A computer-readable storage medium storing computer executable instructions that cause a communication device to execute a process, the process comprising:

transmitting a communication parameter to connect to a wireless network established by an access point to another communication device using information obtained from a captured image; and

storing the information obtained from the captured image,

wherein, when the communication parameter is changed after the communication parameter is transmitted to the another communication device, the changed communication parameter is transmitted to the another communication device by reusing the stored information.