Communication apparatus and method

• US 20040258005A1
• Filed: 06/03/2004
• Published: 12/23/2004
• Est. Priority Date: 06/06/2003
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Kitawaki, Haruyuki
• Granted Patent: US 7,668,114 B2
• Time in Patent Office: Days
• US Class Current: 370/254
• CPC Class Codes: H04L 2101/604 Address structures or formats
• CPC Class Codes: H04L 61/5007 Internet protocol [IP] addresses
• CPC Class Codes: H04L 61/5053 Lease time; Renewal aspects
• CPC Class Codes: H04L 61/5092 by self-assignment, e.g. picking addresses at random and testing if they are already in use
• CPC Class Codes: H04L 63/0407 wherein the identity of one or more communicating identities is hidden cryptographic mechanisms or cryptographic arrangements for anonymous credentials or for identity based cryptographic systems H04L9/00

Abstract

A communication apparatus receives identification information and generates source information indicating a source of transmission made based on the received identification information. The communication apparatus changes the source information and a transmission route. The transmission route corresponds to the identification information used in generating the source information.

Claims

1. A communication apparatus comprising:

communication means; and

setting means which sets source information indicating a source of transmission made by said communication means,

wherein said setting means changes the source information and a transmission route, which correspond to identification information received by said communication means.

2. The communication apparatus according to claim 1, wherein said transmission route indicates a device through which transmission data passes.

3. The communication apparatus according to claim 1, wherein said transmission route indicates a device which connects a network connected with said communication means to another network.

4. The communication apparatus according to claim 1, wherein said setting means sets the transmission route in such a way that transmission data from said communication means passes through a source for the identification information.

5. The communication apparatus according to claim 1, wherein said setting means generates the source information based on the identification information.

6. The communication apparatus according to claim 1, wherein said source information includes the identification information and said configuration means changes the source information in such a way that the identification information differs from identification information before change.

7. The communication apparatus according to claim 1, wherein said setting means sets the transmission route in such a way that transmission data from said communication means passes through a source for the identification information corresponding to the source information after change.

8. The communication apparatus according to claim 1, wherein said setting means sets the source information and the transmission route according to expiration of the source information.

9. The communication apparatus according to claim 1, wherein said setting means sets the source information and the transmission route according to a destination of communication done by said communication means.

10. A communication method comprising:

a communication step;

a generation step for generating source information indicating a source of transmission made at said communication step; and

a change step of changing the source information and a transmission route,

wherein the source information and the transmission route correspond to identification information received at said communication step.

11. The communication method according to claim 10, wherein said transmission route is changed at said change step in such a way that transmission data at said communication step passes through a source for the identification information.

12. The communication method according to claim 10, wherein the source information is generated based on said identification information at said generation step.

13. The communication method according to claim 10, wherein the source information includes the identification information and the source information is changed at said change step in such a way that the identification information differs from identification information before change.

14. The communication method according to claim 10, wherein the transmission route is changed at said change step in such a way that transmission data at said communication step passes through a source for the identification information corresponding to the source information after change.

15. A communication program comprising:

a communication step;

a generation step for generating source information indicating a source of transmission made at said communication step; and

a change step of changing the source information and a transmission route,

wherein the source information and the transmission route correspond to identification information received at said communication step.

16. The communication program according to claim 15, wherein said transmission route is changed at said change step in such a way that transmission data at said communication step passes through a source for the identification information.

17. The communication program according to claim 15, wherein the source information is generated based on the identification information at said generation step.

18. The communication program according to claim 15, wherein the source information includes the identification information and the source information is changed at said change step in such a way that the identification information differs from identification information before change.

19. The communication program according to claim 15, wherein the transmission route is changed at said change step in such a way that transmission data at said communication step passes through a source for the identification information corresponding to said source information after change.