Receiving device for receiving data

• US 20020147863A1
• Filed: 03/18/2002
• Published: 10/10/2002
• Est. Priority Date: 03/17/2001
• Status: Active Grant

• Current Assignee: Infineon Technologies AG
• Original Assignee: Infineon Technologies AG
• Inventors: Wunsche, Thomas, Barrenscheen, Jens
• Granted Patent: US 6,904,472 B2
• Time in Patent Office: Days
• US Class Current: 710/1
• CPC Class Codes: G05B 2219/25032 CAN, canbus, controller area network bus
• CPC Class Codes: G05B 2219/25221 Identification of messages and their relative priority
• CPC Class Codes: H04L 12/40013 Details regarding a bus controller
• CPC Class Codes: H04L 12/4135 using bit-wise arbitration
• CPC Class Codes: H04L 49/90 Buffering arrangements
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers

Abstract

A description is given of a receiving device for receiving data. The receiving device extracts from the received data a specific part thereof and, depending on the content of the extracted data, decides how it must handle the received data. The receiving device described is distinguished by the fact that it determines, depending on a part of the extracted data, how the received data might have to be handled, and that, taking account of the result of this determination, it determines how the received data are actually to be handled. Such a receiving device can decide, quickly and simply with a low outlay under all circumstances, how the received data are to be handled.

Claims

1. A receiving device, comprising:

extraction means for extracting from received data a specific part thereof resulting in extracted data; and

determination means for determining, in dependence on a part of the extracted data, how the received data might have to be handled resulting in a handling decision, said determination means further determining how the received data are actually to be handled, taking into account the handling decision, said determination means receiving the extracted data from said extraction means.

2. The receiving device according to claim 1, wherein the extracted data contains an information item about one of a transmitter, a receiver, and a content of the received data.

3. The receiving device according to claim 1, wherein a decision of said determination means regarding how it must handle the received data is a decision regarding whether the receiving device forwards the received data.

4. The receiving device according to claim 1, wherein a decision of said determination means regarding how it must handle the received data is a decision regarding if and how the receiving device processes the received data.

5. The receiving device according to claim 1, wherein the part of the extracted data used to determine how the received data might have to be handled is obtained by a logic combination of the extracted data with a mask.

6. The receiving device according to claim 1, wherein said determination means has a memory device, and the part of the extracted data used for determining how the received data might have to be handled is used for addressing said memory device.

7. The receiving device according to claim 6, wherein said memory device stores information items regarding how the received data might have to be handled.

8. The receiving device according to claim 7, wherein the information items stored in said memory device contain details regarding what must be done in order to be able to decide how the received data are actually to be handled.

9. The receiving device according to claim 7, wherein the information items stored in said memory device contain details regarding at least one value with which the extracted data or a selected part thereof must be processed in order to be able to decide how the received data are to be handled.

10. The receiving device according to claim 9, wherein the information items stored in said memory device contain details regarding where the at least one value with which the extracted data or the selected part thereof must be processed are stored.

11. The receiving device according to claim 9, wherein a processing of the extracted data or of the selected part thereof includes checking whether the extracted data or the selected part thereof correspond to the value or to one of a plurality of specific values.

12. The receiving device according to claim 1, wherein the receiving device is used in a CAN controller.

13. The receiving device according to claim 12, wherein the part of the extracted data extracted from the received data is an identifier of a message transmitted through a CAN bus.

14. The receiving device according to claim 13, wherein said determination means checks whether the identifier extracted from the message corresponds to identifiers assigned to message objects.

15. The receiving device according to claim 14, wherein if said determination means ascertains a correspondence, the received data is fed to a message object assigned to the identifier to which the identifier extracted from the message corresponds.

16. An apparatus, comprising:

an input terminal for receiving data; and

a receiving device connected to said input terminal and programmed to extract from the data a specific part thereof resulting in extracted data, said receiving device further programmed to determine, in dependence on a part of the extracted data, how the data might have to be handled resulting in a handling decision, and said receiving device programmed to determine how the data are actually to be handled, taking into account the handling decision.

17. A method for handling data in a receiving device, which comprises the steps of:

extracting from data received a specific part thereof resulting in extracted data;

determining, in dependence on a part of the extracted data, how the data received data might have to be handled resulting in a handling decision; and

determining how the data received are actually to be handled taking account of the handling decision.