Method and device for synchronising a programme running on a first computer with a programme running on a server, computer-readable storage medium and computer programme element

• US 20030149721A1
• Filed: 12/02/2002
• Published: 08/07/2003
• Est. Priority Date: 02/24/2000
• Status: Abandoned Application

• Current Assignee: Siemens AG
• Original Assignee: Siemens AG
• Inventors: Baumgarten, Hans-Georg, Pfeuffer, Evelyn, Alfonso-Nogueiro, Luis-Alfredo
• Application Number:
  US10/204,704
• Publication Number:
  US 20030149721A1
• Time in Patent Office: Days
• US Class Current: 709/203
• CPC Class Codes: G06F 8/458 Synchronisation, e.g. post-wait, barriers, locks synchronisation among tasks G06F9/52

Abstract

The program that is running on the server continues to run without a connection to the first computer and carries out state changes. As soon as an existing connection has been interrupted, the state of the first computer is stored within the program that is running on the server. The program is continued and state changes are logged. The state changes are initiated by the server. Once a new connection has been established, the programs are synchronized.

Claims

1. A method for synchronizing a program running on a first computer with a program running on a server, where the program running on the server continues to run and makes state changes even when the server is not connected to the first computer,

a) in which, as soon as an existing connection between the first computer and the server has been interrupted, the server stores the state of the first computer within the program running on the server;

b) in which the program running on the server is continued after the connection to the first computer has been interrupted, with state changes in the program running on the server being logged, at least some of which state changes are caused by the server; and

c) in which the first computer is reconnected to the server, and the stored state and the logged state changes are taken as a basis for synchronizing the program running on the first computer with the program running on the server.

2. The method as claimed in claim 1,

in which the logged state changes as a series of commands for running through all the states since interruption of the connection and/or the respective new states are concurrently logged.

3. The method as claimed in claim 1 or 2,

in which synchronization involves deciding whether the commands for running through all the states up to a current state or the result of the state change are/is transmitted to the first computer, depending on what is more economical with regard to a required bandwidth for transmission and/or with regard to a required computation capacity for synchronizing the first computer.

4. The method as claimed in one of claims 1 to 3, in which a program running on a second computer is used to access the program running on the server.

5. The method as claimed in one of claims 1 to 4, in which the first computer and/or the second computer used are mobile computers.

6. The method as claimed in one of claims 1 to 5, in which the first computer is connected to the server via a radio interface, particularly [lacuna] GSM, DECT or UMTS.

7. The method as claimed in one of claims 1 to 6, in which the state changes in the program running on the server are logged for a predetermined period of time.

8. The method as claimed in one of claims 1 to 7, used in one of the following applications:

multi-user engineering through access to a shared server application, administration of distributed applications, multi-player games, or multi-player games in which the players use mobile computers to access the game provided by the server via a radio interface.

9. The method as claimed in one of claims 1 to 8, in which synchronization is performed transparently for the program running on the server within middleware on the server.

10. An arrangement synchronizing a program running on a first computer with a program running on a server, where the program running on the server continues to run and makes state changes even when the server is not connected to the first computer, having

a) the first computer,

b) the server, with the first computer and the server being connected to one another via a connection,

c) where the server is set up such that the following steps can be performed:

(1) as soon as an existing connection between the first computer and the server has been interrupted, the server stores the state of the first computer within the program running on the server;

(2) the program running on the server is continued after the connection to the first computer has been interrupted, with state changes in the program running on the server being logged, at least some of which state changes are caused by the server; and

(3) the first computer is reconnected to the server, and the stored state and the logged state changes are taken as a basis for synchronizing the program running on the first computer with the program running on the server.

11. The arrangement as claimed in claim 10,

having at least one further second computer, which is connected to the server via a connection.

12. The arrangement as claimed in claim 10 or 11,

in which the first computer and/or at least one second computer, which is connected to the server via a connection, is/are mobile computers.

13. The arrangement as claimed in one of claims 10 to 13,

in which the connection from the first computer and/or from at least one second computer to the server is a radio connection, particularly based on GSM, DECT or UMTS.

14. The arrangement as claimed in one of claims 10 to 13,

in which the server has middleware within which the synchronization can be carried out transparently for the program running on the server.

15. The arrangement as claimed in one of claims 10 to 14,

used in one of the following applications:

multi-user engineering through access to a shared server application,

administration of distributed applications,

multi-player games, or

multi-player games in which the players use mobile computers to access the game provided by the server via a radio interface.

16. A computer-readable storage medium storing a computer program for synchronizing a program running on a first computer with a program running on a server, where the program running on the server continues to run and makes state changes even when the server is not connected to the first computer, said computer program, when executed by a processor, having the following method steps:

as soon as an existing connection between the first computer and the server has been interrupted, the server stores the state of the first computer within the program running on the server;

the program running on the server is continued after the connection to the first computer has been interrupted, with state changes in the program running on the server being logged, at least some of which state changes are caused by the server; and

the first computer is reconnected to the server, and the stored state and the logged state changes are taken as a basis for synchronizing the program running on the first computer with the program running on the server.

17. A computer program element for synchronizing a program running on the first computer with a program running on a server, where the program running on the server continues to run and makes state changes even when the server is not connected to the first computer, said computer program element, when executed by a processor, having the following method steps:

as soon as an existing connection between the first computer and the server has been interrupted, the server stores the state of the first computer within the program running on the server;

the program running on the server is continued after the connection to the first computer has been interrupted, with state changes in the program running on the server being logged, at least some of which state changes are caused by the server; and

the first computer is reconnected to the server, and the stored state and the logged state changes are taken as a basis for synchronizing the program running on the first computer with the program running on the server.