SERVER APPARATUS, SYSTEM, AND CONTROL METHOD THEREOF

• US 20140201263A1
• Filed: 02/27/2013
• Published: 07/17/2014
• Est. Priority Date: 05/10/2012
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Ohashi, Toshio
• Granted Patent: US 9,596,121 B2
• Time in Patent Office: Days
• US Class Current: 709/203
• CPC Class Codes: G06F 2221/2105 Dual mode as a secondary aspect
• CPC Class Codes: H04L 67/00 Network arrangements or protocols for supporting network services or applications user-to-user messaging H04L51/00; network arrangements, protocols or services for supporting real-time applications in data packet communications networks H04L65/00
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 67/141 Setup of application sessions admission control or resource allocation in data switching networks H04L47/70

Abstract

A server apparatus receives a query from a client apparatus connected via the Internet, and as its reply, it transmits first condition information according to which initial communication is performed in order to switch to a specific communication format in which instruction from the server apparatus is possible without a request of the client apparatus.

Claims

1. A server apparatus that communicates with a client apparatus via the Internet, the server apparatus comprising:

a receiving unit configured to receive a query from the client apparatus;

a transmitting unit configured to transmit, as a reply to the received query, first condition information according to which to perform an initial communication in order to switch to a specific communication mode in which instruction from the server apparatus is possible without a request from the client apparatus, wherein the first condition information includes information of a condition that triggers performance of the initial communication and includes information about a trigger event detected by the client apparatus; and

an instructing unit configured to switch to the specific communication mode by performing the initial communication with the client apparatus according to the first condition information, and configured to make a transmission instruction to the client apparatus in the specific communication mode.

2. The server apparatus according to claim 1, wherein the specific communication mode uses a WebSocket protocol.

3. The server apparatus according to claim 2, wherein the initial communication is a handshake of the WebSocket protocol.

4. The server apparatus according to claim 1, wherein the first condition information further includes at least one of schedule information and a time period.

5. The server apparatus according to claim 1, wherein the client apparatus is an image forming apparatus.

6. The server apparatus according to claim 1, further comprising a disconnection unit configured to disconnect communication in the specific communication mode method according to second condition information corresponding to the first condition information.

7. The server apparatus according to claim 6, wherein the disconnection unit, in a case where there is no instruction to be transmitted to the client apparatus as the second condition information, disconnects communication in the specific communication mode.

8. The server apparatus according to claim 1, further comprising a control unit configured to control, in a case where there is no instruction to be transmitted to the client apparatus when the initial communication is performed from the client apparatus according to the first condition information, so as not to switch to the specific communication mode.

15. A non-transitory computer-readable storage medium storing a program for causing a computer to function as the server apparatus according to claim 1.

9. A control method for controlling a server apparatus that communicates with a client apparatus via the Internet, the control method comprising steps of:

receiving a query from the client apparatus;

transmitting, as a reply to the received query, first condition information according to which to perform an initial communication in order to switch to a specific communication mode in which instruction from the server apparatus is possible without a request from the client apparatus, wherein the first condition information includes information of a condition that triggers performance of the initial communication and includes information about a trigger event detected by the client apparatus; and

switching to the specific communication mode by performing the initial communication with the client apparatus according to the first condition information, and making a transmission instruction to the client apparatus in the specific communication mode.

10. The control method according to claim 9, wherein the specific communication mode uses a WebSocket protocol.

11. The control method according to claim 9, wherein the first condition information further includes at least one of schedule information and a time period.

12. The control method according to claim 9, further comprising a step of disconnecting communication in the specific communication mode according to second condition information corresponding to the first condition information.

13. The control method according to claim 12, wherein in the disconnecting step, in a case where there is no instruction to be transmitted to the client apparatus as the second condition information, communication in the specific communication mode is disconnected.

14. The control method according to claim 9, further comprising a step of controlling, in a case where there is no instruction to be transmitted to the client apparatus when the initial communication is performed from the client apparatus according to the first condition information, so as not to switch to the specific communication mode.

16. A system having a client apparatus and a server apparatus that communicates with said client apparatus via the Internet, wherein the server apparatus comprises:

a receiving unit configured to receive a query from the client apparatus;

a transmitting unit configured to transmit, as a reply to the received query, first condition information according to which to perform an initial communication in order to switch to a specific communication mode in which instruction from the server apparatus is possible without a request from the client apparatus, wherein the first condition information includes information of a condition that triggers performance of the initial communication and includes information about a trigger event detected by the client apparatus; and

an instructing unit configured to switch to the specific communication mode by performing the initial communication with the client apparatus according to the first condition information, and configured to make a transmission instruction to the client apparatus in the specific communication mode even if there is no request from the client apparatus, and

wherein the client apparatus comprises;

a receiving unit configured to receive from the server apparatus the first condition information and

a control unit configured to initiate the initial communication with the server apparatus according to the first condition information received by said receiving unit.

17. The system according to claim 16, wherein the specific communication mode uses a WebSocket protocol.

18. The system according to claim 16, wherein the first condition information further includes at least one of schedule information and a time period.

19. The system according to claim 16, wherein the client apparatus is an image forming apparatus.

20. The system according to claim 16, wherein the server apparatus further comprises a disconnection unit configured to disconnect communication in the specific communication mode according to second condition information corresponding to the first condition information.

21. The system according to claim 20, wherein said disconnection unit, in a case where there is no instruction to be transmitted to the client apparatus as the second condition information, disconnects communication in the specific communication mode.

22. The system according to claim 16, wherein the server apparatus controls, in a case where there is no instruction to be transmitted to the client apparatus when the initial communication is performed from the client apparatus according to the first condition information, so as not to switch to the specific communication mode.

23. A control method for a system having a client apparatus and a server apparatus that communicates with the client apparatus via the Internet, wherein the server apparatus executes steps of:

receiving a query from the client apparatus;

transmitting, as a reply to the received query, first condition information according to which to perform an initial communication in order to switch to a specific communication mode in which instruction from the server apparatus is possible without a request from the client apparatus, wherein the first condition information includes information of a condition that triggers performance of the initial communication and includes information about a trigger event detected by the client apparatus; and

switching to the specific communication mode by performing the initial communication with the client apparatus according to the first condition information, and making a transmission instruction to the client apparatus in the specific communication mode even if there is no request from the client apparatus, and

wherein the client apparatus executes steps of;

receiving from the server apparatus the first condition information; and

initiating the initial communication with the server apparatus according to the received first condition information.