Communications apparatus and control method therefor

• US 8,695,057 B2
• Filed: 03/16/2007
• Issued: 04/08/2014
• Est. Priority Date: 03/20/2006
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Fujii, Kenichi
• Primary Examiner(s): Brown, Christopher
• Assistant Examiner(s): MOHAMMADI, FAHIMEH M
• Application Number:
  US12/162,899
• Publication Number:
  US 20090007226A1
• Time in Patent Office: 2,580 Days
• Field of Search: 713150-181, 713/201, 380200-242, 320/106, 726/1, 726/27, 326/8
• US Class Current: 726/1
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04L 63/105 Multiple levels of security
• CPC Class Codes: H04L 63/205 involving negotiation or determination of the one or more network security mechanisms to be used, e.g. by negotiation between the client and the server or between peers or by selection according to the capabilities of the entities involved negotiation of communication capabilities H04L69/24
• CPC Class Codes: H04L 67/125 involving control of end-device applications over a network
• CPC Class Codes: H04W 12/08 Access security
• CPC Class Codes: H04W 12/50 Secure pairing of devices
• CPC Class Codes: H04W 28/18 Negotiating wireless communication parameters
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

When exchanging communication parameter setting information on a wireless network, a communications apparatus selects between a first operation mode in which communications parameter information is exchanged with a specific communications apparatus and a second operation mode in which communications parameter information is exchanged with an unspecified number of communications apparatus. Depending on the selected operation mode, the communications apparatus control security upon holding the communications parameter information exchanged with the specific communications apparatus and the communications parameter information exchanged with the unspecified number of communications apparatus.

Claims

1. A communication apparatus which sets communication parameters, comprising:

a CPU programmed to perform the functions of

a selection unit configured to select either a first operation mode for sharing communication parameters, which are for forming a wireless network, between the communication apparatus and another communication apparatus or a second operation mode for sharing communication parameters, which are for forming a wireless network, among the communication apparatus and a plurality of other communication apparatuses; and

a control unit configured to control the communication parameters set in the communication apparatus by a different management method in accordance with the operation mode selected by said selection unit,

wherein, in a case that the communication apparatus is instructed to operate in the second operation mode after the communication apparatus set first communication parameters shared in the first operation mode, a wireless network is formed using the second communication parameter shared in the second operation mode and the setting of the first communication parameter is temporarily released, and then, in a case that a communication over the wireless network formed using the second communication parameter is completed, the communication apparatus sets the first communication parameters again.

2. The communication apparatus according to claim 1, wherein said control unit changes, as the different management method, storage areas used to store the communication parameters, in accordance with the selected first or second operation mode.

3. The communication apparatus according to claim 1, wherein said control unit manages, as temporary stored communication parameters, the communication parameters to be set to the communication apparatus, in the second operation mode.

4. The communication apparatus according to claim 3, wherein said control unit erases communication parameters managed as temporary stored information when said communication apparatus is powered on or off.

5. The communication apparatus according to claim 3, wherein said control unit erases communication parameters managed as temporary stored information when a predetermined period expires.

6. The communication apparatus according to claim 3, wherein said control unit erases communication parameters managed as temporary stored information when a service is performed on a network corresponding to the communication parameters.

7. The communication apparatus according to claim 3, wherein, in the second operation mode, said control unit continues to store communication parameters managed as the temporary stored information until new communication parameters are set.

8. The communication apparatus according to claim 3, wherein said control unit manages communication parameters set in the first operation mode as permanent stored information, and manages communication parameters set in the second operation mode as temporary stored information.

9. The communication apparatus according to claim 3, wherein said control unit changes storage areas used for storing the communication parameters in accordance with the first or second operation mode selected by said selection unit.

10. The communication apparatus according to claim 1, wherein the CPU is further programmed to perform the function of:

an exchange unit configured to exchange security level information when setting the communication parameters, and wherein

said control unit changes a security setting of the communication parameters according to the exchanged security level information and the selected operation mode.

11. The communication apparatus according to claim 10, wherein regarding the security setting, the highest common security level is set in the first operation mode and the lowest common security level is set in the second operation mode.

12. The communication apparatus according to claim 1, wherein said control unit controls the communication parameters set in the first operation mode so as to be deleted by a user action and the communication parameters set in the second operation mode so as to be automatically deleted.

13. The communication apparatus according to claim 1, wherein said control unit controls the communication parameters shared in the second operation mode so as to be deleted in accordance with completion of a communication session.

14. The communication apparatus according to claim 13, wherein the communication session is completed by the completion of a communication service.

15. The communication apparatus according to claim 13, wherein the communication session is completed in response to an instruction of power off of the communication apparatus.

16. The communication apparatus according to claim 13, wherein the communication session is completed by the expiration of a predetermined time period.

17. The communication apparatus according to claim 13, wherein the communication session is completed when communication parameters are newly set.

18. The communication apparatus according to claim 1, wherein said control unit changes a time period for storing the communication parameters according to the operation mode.

19. A communication apparatus which sets communication parameter information, comprising:

a CPU programmed to perform the functions of

a selection unit configured to select one of a first operation mode in which communication parameter information is set in relation to a specific communication apparatus and a second operation mode in which communication parameter information is set in relation to an unspecified number of communication apparatuses; and

a control unit configured to control security of the communication parameter information which is set in relation to the specific communication apparatus or the unspecified number of communication apparatuses, in accordance with the operation mode selected by said selection unit,

wherein said control unit manages the communication parameter information as either permanent stored information or temporary stored information, in accordance with the selected operation mode, and

wherein, when setting second communication parameter information in the second operation mode, after forming a network using first communication parameter information set in the first operation mode, a network is formed using the second communication parameter information with the first communication parameter information being saved temporarily, and then a wireless network is formed using the first communication parameter information again.

20. A communication apparatus which sets communication parameter information, comprising:

a CPU programmed to perform the functions of

a selection unit configured to select one of a first operation mode in which communication parameter information is set in relation to a specific communication apparatus and a second operation mode in which communication parameter information is set in relation to an unspecified number of communication apparatuses;

a control unit configured to control security of the communication parameter information which is set in relation to the specific communication apparatus or the unspecified number of communication apparatus, in accordance with the operation mode selected by said selection unit; and

an exchange unit configured to exchange security level information when setting the communication parameter information, wherein said control unit controls security of the communication parameter information according to the exchanged security level information and the selected operation mode,

wherein the security of the communication parameter information in the first operation mode is controlled by setting the highest common security level when specific additional information is included in the communication parameter information and setting the lowest common security level when no additional information is included in the communication parameter information.

21. A control method for a communication apparatus which sets communication parameters, comprising:

selecting either a first operation mode for sharing communication parameters, which are for forming a wireless network, between the communication apparatus and another communication apparatus or a second operation mode for sharing communication parameters, which are for forming a wireless network, among the communication apparatus and a plurality of other communication apparatuses; and

controlling the communication parameters set in the communication apparatus by a different management method, in accordance with the operation mode selected in said selection step,

wherein, in a case that the communication apparatus is instructed to operate in the second operation mode after the communication apparatus set first communication parameters shared in the first operation mode, a wireless network is formed using the second communication parameter shared in the second operation mode and the setting of the first communication parameter is temporarily released, and then, in a case that a communication over the wireless network formed using the second communication parameter is completed, the communication apparatus sets the first communication parameters again.

22. A program which is recorded on a non-transitory computer-readable recording medium and makes a computer perform a control method for a communication apparatus that sets communication parameters, the method comprising the steps of:

selecting either a first operation mode for sharing communication parameters, which are for forming a wireless network, between the communication apparatus and another communication apparatus or a second operation mode for sharing communication parameters, which are for forming a wireless network, among the communication apparatus and a plurality of other communication apparatuses; and

controlling the communication parameters set in the communication apparatus by a different management method, in accordance with the operation mode selected in said selection step,

wherein, in a case that the communication apparatus is instructed to operate in the second operation mode after the communication apparatus set first communication parameters shared in the first operation mode, a wireless network is formed using the second communication parameter shared in the second operation mode and the setting of the first communication parameter is temporarily released, and then, in a case that a communication over the wireless network formed using the second communication parameter is completed, the communication apparatus sets the first communication parameters again.

23. A non-transitory computer-readable recording medium containing a program which makes a computer perform a control method for a communication apparatus that sets communication parameters, the method comprising the steps of:

selecting either a first operation mode for sharing communication parameters, which are for forming a wireless network, between the communication apparatus and another communication apparatus or a second operation mode for sharing communication parameters, which are for forming a wireless network, among the communication apparatus and a plurality of other communication apparatuses; and

controlling the communication parameters set in the communication apparatus by a different management method, in accordance with the operation mode selected in said selection step,

wherein, in a case that the communication apparatus is instructed to operate in the second operation mode after the communication apparatus set first communication parameters shared in the first operation mode, a wireless network is formed using the second communication parameter shared in the second operation mode and the setting of the first communication parameter is temporarily released, and then, in a case that a communication over the wireless network formed using the second communication parameter is completed, the communication apparatus sets the first communication parameters again.

24. A communication apparatus which sets communication parameter information, comprising:

a CPU programmed to perform the functions of

a selection unit configured to select either a first operation mode in which communication parameter information is set to be shared between the communication apparatus and another communication apparatus or a second operation mode in which the communication parameter information is set to be shared among the communication apparatus and other communication apparatuses;

a control unit configured to control the communication parameter information to be set to the communication apparatus by a different management method or a different setting method in accordance with the first or second operation mode selected by said selection unit; and

a communication parameter control unit configured so that, when setting second communication parameter information in the second operation mode, after forming a network using first communication parameter information set in the first operation mode, a network is formed using the second communication parameter information with the first communication parameter information being saved temporarily, and then a wireless network is formed using the said first communication parameter information again.

25. A control method for a communication apparatus which sets communication parameter information, comprising:

selecting either a first operation mode in which communication parameter information is set to be shared between the communication apparatus and another communication apparatus or a second operation mode in which the communication parameter information is set to be shared among the communication apparatus and other communication apparatuses;

controlling the communication parameter information to be set to the communication apparatus by a different management method or a different setting method in accordance with the first or second operation mode selected in said selection step; and

when setting second communication parameter information in the second operation mode, after forming a network using first communication parameter information set in the first operation mode, forming a network using the second communication parameter information with the first communication parameter information being saved temporarily, and then forming a wireless network using the said first communication parameter information again.

26. A non-transitory computer-readable recording medium containing a program which makes a computer perform a control method for a communication apparatus that sets communication parameters, the method comprising:

selecting either a first operation mode in which communication parameter information is set to be shared between the communication apparatus and another communication apparatus or a second operation mode in which the communication parameter information is set to be shared among the communication apparatus and other communication apparatuses;

controlling the communication parameter information to be set to the communication apparatus by a different management method or a different setting method in accordance with the first or second operation mode selected in said selection step; and

when setting second communication parameter information in the second operation mode, after forming a network using first communication parameter information set in the first operation mode, forming a network using the second communication parameter information with the first communication parameter information being saved temporarily, and then forming a wireless network using the said first communication parameter information again.

27. A communication apparatus comprising:

a CPU programmed to perform the functions of

a selection unit configured to select either a first operation mode which targets another communication apparatus or a second operation mode which targets a plurality of other communication apparatuses; and

a setting unit configured to set communication parameters shared between the communication apparatus and the targeted communication apparatus in accordance with the first or second operation mode selected by said selection unit, the communication parameters being for forming a wireless network,

wherein the communication parameters set by said setting unit differ from each other in the first and second operation modes and

wherein, in a case that the communication apparatus is instructed to operate in the second operation mode after the communication apparatus set first communication parameters shared in the first operation mode, a wireless network is formed using the second communication parameter shared in the second operation mode, and the setting of the first communication parameter is temporarily released, and then, in a case that a communication over the wireless network formed using the second communication parameter is completed, the communication apparatus sets the first communication parameters again.

28. The communication apparatus according to claim 27, wherein the setting unit sets, as temporary stored communication parameters, the communication parameters set in the second operation mode.

29. The communication apparatus according to claim 27, wherein the communication parameters set in the second operation mode are automatically deleted.

30. The communication apparatus according to claim 27, further comprising a clearing unit configured to clear the communication parameters set in the second operation mode in accordance with completion of a communication session.

31. The communication apparatus according to claim 30, wherein the communication session is completed by the completion of a communication service.

32. The communication apparatus according to claim 30, wherein the communication session is completed in response to an instruction of power off of the communication apparatus.

33. The communication apparatus according to claim 30, wherein the communication session is completed by the expiration of a predetermined time period.

34. The communication apparatus according to claim 30, wherein the communication session is completed when communication parameters are newly set by said first setting unit.

35. The communication apparatus according to claim 27, wherein said setting unit sets communication parameters that a security setting of the communication parameters is changed in accordance with the first or second operation mode.

36. A control method for a communication apparatus, the method comprising:

selecting either a first operation mode which targets another communication apparatus or a second operation mode which targets a plurality of other communication apparatuses; and

setting communication parameters shared between the communication apparatus and the targeted communication apparatus in accordance with the first or second operation mode selected in the selection step, the communication parameters being for forming a wireless network,

wherein the communication parameters set in the setting step differ from each other in the first and second operation modes and

wherein, in a case that the communication apparatus is instructed to operate in the second operation mode after the communication apparatus set first communication parameters shared in the first operation mode, a wireless network is formed using the second communication parameter shared in the second operation mode, and the setting of the first communication parameter is temporarily released, and then, in a case that a communication over the wireless network formed using the second communication parameter is completed, the communication apparatus sets the first communication parameters again.

37. A program which is recorded on a non-transitory computer-readable recording medium and makes a computer perform a control method for a communication apparatus that sets communication parameters, the method comprising:

selecting either a first operation mode which targets another communication apparatus or a second operation mode which targets a plurality of other communication apparatuses; and

setting communication parameters shared between the communication apparatus and the targeted communication apparatus in accordance with the first or second operation mode selected in the selection step, the communication parameters being for forming a wireless network,

wherein the communication parameters set in the setting step differ from each other in the first and second operation modes and

wherein, in a case that the communication apparatus is instructed to operate in the second operation mode after the communication apparatus set first communication parameters shared in the first operation mode, a wireless network is formed using the second communication parameter shared in the second operation mode, and the setting of the first communication parameter is temporarily released, and then, in a case that a communication over the wireless network formed using the second communication parameter is completed, the communication apparatus sets the first communication parameters again.

38. A communication apparatus comprising:

a CPU programmed to perform the functions of

a first setting unit configured to execute first communication parameter setting processing for setting wireless communication parameters to be shared between the communication apparatus and another communication apparatus;

a second setting unit configured to execute second communication parameter setting processing for setting wireless communication parameters to be shared among the communication apparatus and a plurality of other communication apparatuses; and

a control unit configured to control the communication parameters set to the communication apparatus by a different management method in accordance with whether the communication parameters are set by the first setting unit or by the second setting unit,

wherein, in a case that the communication apparatus is instructed to execute the second communication parameter setting processing after the communication apparatus set first communication parameters shared by the first setting unit, a wireless network is formed using the second communication parameter shared by the second setting unit and the setting of the first communication parameter is temporarily released, and then, in a case that a communication over the wireless network formed using the second communication parameter is completed, the communication apparatus sets the first communication parameters again.

39. A communication apparatus, comprising:

a CPU programmed to perform the functions of

a first setting unit configured to execute first wireless communication parameter setting processing for setting credentials for wireless communication to be shared between the communication apparatus and another communication apparatus;

a second setting unit configured to execute second communication parameter setting processing for setting credentials for wireless communication to be shared among the communication apparatus and a plurality of other communication apparatuses;

an allowance unit configured to allow the communication apparatus to establish a one-time session using the credentials set by the second setting unit and to prevent reuse of the credentials set by the second setting unit in next-time session,

wherein, in a case that the communication apparatus is instructed to execute the second communication parameter setting processing after the communication apparatus set first communication parameters shared by the first setting unit, a wireless network is formed using the second communication parameter shared by the second setting unit and the setting of the first communication parameter is temporarily released, and then, in a case that a communication over the wireless network formed using the second communication parameter is completed, the communication apparatus sets the first communication parameters again.

40. A control method for a communication apparatus comprising:

executing first communication parameter setting processing for setting wireless communication parameters to be shared between the communication apparatus and another communication apparatus;

executing second communication parameter setting processing for setting wireless communication parameters to be shared among the communication apparatus and a plurality of other communication apparatuses; and

controlling the communication parameters set to the communication apparatus by a different management method in accordance with whether the communication parameters are set in the first communication parameter setting processing or in the second communication parameter setting processing,

wherein, in a case that the communication apparatus is instructed to execute the second communication parameter setting processing after the communication apparatus set first communication parameters shared by the first communication parameter setting processing, a wireless network is formed using the second communication parameter shared by the second communication parameter setting processing and the setting of the first communication parameter is temporarily released, and then, in a case that a communication over the wireless network formed using the second communication parameter is completed, the communication apparatus sets the first communication parameters again.

41. A control method for a communication apparatus, comprising:

executing first wireless communication parameter setting processing for setting credentials for wireless communication to be shared between the communication apparatus and another communication apparatus;

executing second communication parameter setting processing for setting credentials for wireless communication to be shared among the communication apparatus and a plurality of other communication apparatuses;

allowing the communication apparatus to establish a one-time session using the credentials set in the second communication parameter setting processing and to prevent reuse of the credentials set in the second communication parameter setting processing in a next-time session,

wherein, in a case that the communication apparatus is instructed to execute the second communication parameter setting processing after the communication apparatus set first communication parameters shared by the first communication parameter setting processing, a wireless network is formed using the second communication parameter shared by the second communication parameter setting processing and the setting of the first communication parameter is temporarily released, and then, in a case that a communication over the wireless network formed using the second communication parameter is completed, the communication apparatus sets the first communication parameters again.

42. A non-transitory computer-readable recording medium containing a program for causing a computer to execute a control method for a communication apparatus that sets communication parameters, the method comprising:

executing first communication parameter setting processing for setting wireless communication parameters to be shared between the communication apparatus and another communication apparatus;

executing second communication parameter setting processing for setting wireless communication parameters to be shared among the communication apparatus and a plurality of other communication apparatuses; and

controlling the communication parameters set to the communication apparatus by a different management method in accordance with whether the communication parameters are set in the first communication parameter setting processing or in the second communication parameter setting processing,

wherein, in a case that the communication apparatus is instructed to execute the second communication parameter setting processing after the communication apparatus set first communication parameters shared by the first communication parameter setting processing, a wireless network is formed using the second communication parameter shared by the second communication parameter setting processing and the setting of the first communication parameter is temporarily released, and then, in a case that a communication over the wireless network formed using the second communication parameter is completed, the communication apparatus sets the first communication parameters again.

43. A non-transitory computer-readable recording medium containing a program for causing a computer to execute a control method for a communication apparatus that sets communication parameters, the method comprising:

executing first wireless communication parameter setting processing for setting credentials for wireless communication to be shared between the communication apparatus and another communication apparatus;

executing second communication parameter setting processing for setting credentials for wireless communication to be shared among the communication apparatus and a plurality of other communication apparatuses;

allowing the communication apparatus to establish a one-time session using the credentials set in the second communication parameter setting processing and to prevent reuse of the credentials set in the second communication parameter setting processing in a next-time session,

wherein, in a case that the communication apparatus is instructed to execute the second communication parameter setting processing after the communication apparatus set first communication parameters shared by the first communication parameter setting processing, a wireless network is formed using the second communication parameter shared by the second communication parameter setting processing and the setting of the first communication parameter is temporarily released, and then, in a case that a communication over the wireless network formed using the second communication parameter is completed, the communication apparatus sets the first communication parameters again.