METHOD FOR SENDING DATA, AND COMMUNICATION DEVICE

• US 20100036960A1
• Filed: 08/05/2009
• Published: 02/11/2010
• Est. Priority Date: 08/05/2008
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Infineon Technologies AG
• Inventors: Kowalewski, Frank
• Granted Patent: US 8,145,772 B2
• Time in Patent Office: Days
• US Class Current: 709/228
• CPC Class Codes: H04L 67/1095 Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes

Abstract

The application describes a method for sending data which involves the reception of a first piece of information which represents the first change in a data record and of a first data change indicator associated with the first change, the making of a second change, the ascertainment of a second data change indicator on the basis of the first data change indicator, and the sending of a second piece of information, which represents the second change in the first changed data record to produce the second changed data record, and of the second data change indicator.

Claims

1. A method for sending data, comprising:

receiving a first piece of information, which represents a first change in a data record to generate a first changed data record, and of a first data change indicator associated with the first change;

the making of a second change in the first changed data record to generate a second changed data record;

ascertaining a second data change indicator on the basis of the first data change indicator; and

sending a second piece of information, which represents the second change in the first changed data record to generate the second changed data record, and of the second data change indicator.

2. The method as claimed in claim 1,

wherein the first piece of information is the first changed data record.

3. The method as claimed in claim 1,

wherein the second piece of information is the second changed data record.

4. The method as claimed in claim 1,

wherein the first data change indicator and the second data change indicator are counter values from a succession of counter values and wherein the second data change indicator is the counter value which follows the first data change indicator.

5. The method as claimed in claim 1,

wherein the second data change indicator is ascertained from the first data change indicator by means of an arithmetic operation.

6. The method as claimed in claim 5,

wherein the first data change indicator and the second data change indicator are integer numbers and the second data change indicator is the first data change indicator increased by a prescribed value.

7. The method as claimed in claim 1,

wherein the first piece of information sent by a communication device and the first data change indicator are received and the second piece of information and the second data change indicator are sent to the communication device.

8. The method as claimed in claim 1,

wherein the data record has a plurality of data elements;

and

wherein the method further comprises;

ascertaining which data elements in the second changed data record have changed in comparison with the first changed data record, and

generating, for each changed data element, a data element change statement, which specifies the change in the changed data element, as part of the second piece of information.

9. The method as claimed in claim 1, further comprising:

storing the second data change indicator as the data change indicator associated with the last change in the data record.

10. The method as claimed in claim 1, further comprising:

comparing the first data change indicator with a stored data change indicator associated with the last change in the data record, and

ascertaining, on the basis of the comparison result, whether a stored instance of the data record contains the first change.

11. The method as claimed in claim 1, further comprising:

receiving an identification, associated with the first change, for a communication device, and

ascertaining, on the basis of the received identification, whether a stored instance of the data record contains the first change.

12. The method as claimed in claim 1, further comprising:

assigning an identification, associated with a communication device which makes the second change, to the second piece of information; and

sending the identification.

13. The method as claimed in claim 1, further comprising:

changing of a stored instance of the data record on the basis of the first change and on the basis of the second change.

14. The method as claimed in claim 1, further comprising:

comparing the first data change indicator with a stored data change indicator associated with the last change in the data record, and

ascertaining, on the basis of the comparison result, of whether a stored instance of the data record contains a change in the data record which preceded the first change.

15. The method as claimed in claim 14, further comprising:

requesting a piece of information which represents a change in the data record that precedes the first change if the stored instance of the data record does not contain a change in the data record which precedes the first change.

16. The method as claimed in claim 1, further comprising:

receiving a third piece of information which represents a third change in a data record, made by a communication device, to generate a third changed data record and of a third data change indicator associated with the third change,

checking whether the third data change indicator matches the second data change indicator,

sending the second piece of information and of the second data change indicator to the communication device which has made the third change if the third data change indicator matches the second data change indicator.

17. A communication device, comprising:

a receiving circuit which is configured to receive a first piece of information, which represents a first change in a data record to generate a first changed data record, and a first data change indicator associated with the first change;

a change circuit which is configured to make a second change in the first changed data record to produce a second changed data record;

an ascertainment circuit which is configured to ascertain a second data change indicator on the basis of the first data change indicator; and

a transmission circuit which is configured to send a second piece of information, which represents the second change in the first changed data record to generate the second changed data record, and the second data change indicator.

18. The communication device as claimed in claim 17, further comprising:

a memory configured to store an instance of the data record.

19. The communication device as claimed in claim 18, further comprising:

a comparing circuit which is configured to compare the first data change indicator with a stored data change indicator associated with the last change in the data record,

wherein the ascertainment circuit is configured to take the comparison result as a basis for ascertaining whether a stored instance of the data record contains the first change.

20. The communication device as claimed in claim 18,

wherein the receiving circuit is configured to receive an identification, associated with the first change, for another communication device, and

wherein the ascertainment circuit is configured to take the received identification as a basis for ascertaining whether the stored instance of the data record contains the first change.

21. The communication device as claimed in claim 18, further comprising:

a comparing circuit which is configured to compare the first data change indicator with a stored data change indicator associated with the last change in the data record,

wherein the ascertainment circuit is configured to take the comparison result as a basis for ascertaining whether a stored instance of the data record contains a change in the data record that precedes the first change.

22. The communication device as claimed in claim 21, further comprising:

a request circuit which is configured to request a piece of information which represents a change in the data record that precedes the first change.

23. A computer program product which, when executed by a computer, causes the computer to perform a method for sending data, wherein the method comprises:

receiving a first piece of information, which represents a first change in a data record to generate a first changed data record, and a first data change indicator associated with the first change;

making a second change in the first changed data record to generate a second changed data record;

ascertaining a second data change indicator on the basis of the first data change indicator; and

sending a second piece of information, which represents the second change in the first changed data record to generate the second changed data record, and the second data change indicator.

24. A method for sending data, the method comprising:

storing an instance of a data record;

receiving a specification for a first change in the data record and an identification for the first change in the data record;

changing the instance of the data record in line with the first change if the instance of the data record does not yet contain the first change;

generating a specification for a second change in the data record;

generating an identification for the second change on the basis of the identification of the first change;

the changing of the instance of the data record in line with the second change; and

sending the specification of the second change and the identification of the second change.

25. A communication device, comprising:

a memory configured to store an instance of a data record;

a receiving circuit which is configured to receive a specification for a first change in the data record and an identification for the change in the data record;

a change circuit which is configured to change the instance of the data record in line with the first change if the instance of the data record does not yet contain the first change;

a generating circuit which is configured to generate a specification for a second change in the data record and an identification for the second change on the basis of the identification of the first change, wherein the change circuit is configured to change the instance of the data record in line with the second change; and

a transmission circuit which is configured to send the specification of the second change and the identification of the second change.