Method for data communication in a vehicle and data communication device

• US 9,172,785 B2
• Filed: 03/21/2012
• Issued: 10/27/2015
• Est. Priority Date: 04/16/2011
• Status: Active Grant

• Current Assignee: Volkswagen AG
• Original Assignee: Volkswagen AG
• Inventors: Scholz, Lars, Fesefeldt, Martin, Wuschke, Martin
• Primary Examiner(s): Eng, George
• Assistant Examiner(s): Gao, Jing
• Application Number:
  US14/112,159
• Publication Number:
  US 20140106712A1
• Time in Patent Office: 1,315 Days
• Field of Search: 455/434
• US Class Current: 1/1
• CPC Class Codes: G01C 21/26 specially adapted for navigation in a road network
• CPC Class Codes: H04L 12/40006 Architecture of a communication node current supply arrangements H04L12/10; intermediate storage or scheduling H04L49/90
• CPC Class Codes: H04L 12/4135 using bit-wise arbitration
• CPC Class Codes: H04L 12/4625 Single bridge functionality, e.g. connection of two networks over a single bridge
• CPC Class Codes: H04L 2012/40273 the transportation system being a vehicle
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 69/08 Protocols for interworking; Protocol conversion
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04M 1/6091 including a wireless interface

Abstract

A method for data communication in a vehicle between an in-vehicle device and a mobile device coupled with the vehicle includes transmitting, by the in-vehicle device, data via a data bus of the vehicle to an in-vehicle data communication device, a first data protocol being used for this purpose, in which an arbitration occurs. The data communication device converts the data, and the data communication device transmits the converted data via a data link to the mobile device. A second data protocol is used in the data transmission from the in-vehicle data communication device to the mobile device, in which no arbitration occurs. A data communication device by which the method of the invention may be implemented is also described.

Claims

1. A method for data communication in a vehicle between an in-vehicle device and a mobile device coupled with the vehicle, the method comprising:

transmitting, by the in-vehicle device, data via a data bus of the vehicle to an in-vehicle data communication device, a first data protocol being used in which an arbitration occurs,

converting, by the data communication device, the data, and

transmitting, by the data communication device, the converted data via a data link to the mobile device,

wherein a second data protocol in which no arbitration occurs is used in the data transmission from the data communication device to the mobile device;

wherein the data communication device converts the data received via the data bus of the vehicle into a data format for an asynchronous serial interface, for the data transmission via the second data protocol; and

wherein the data bus of the vehicle is a controller area network (CAN) bus, the data communication device converts the data received via the CAN bus into an intermediate data format, and the mobile device converts the data received from the data communication device into the data format for the asynchronous serial interface.

2. The method according to claim 1, further comprising:

filtering, by the data communication device, the data received via the data bus prior to transmitting the converted data to the mobile device.

3. The method according to claim 1, wherein the data link between the data communication device and the mobile device is a serial point-to-point connection.

4. The method according to claim 1, wherein the data in the second data protocol are transmitted in packets, a length of a data packet being greater than 8 bytes and smaller than 255 bytes.

5. The method according to claim 1, wherein in the data transmission from the data communication device to the mobile device, an authentication code is transmitted to the mobile device.

6. The method according to claim 1, further comprising:

transmitting audio data from the mobile device to the data communication device, and

acoustically outputting the audio data by the data communication device.

7. A data communication device in a vehicle for data communication between an in-vehicle device and a mobile device coupled with the vehicle, comprising:

a first interface adapted for receiving data from the in-vehicle device via a data bus of the vehicle, a first data protocol being used in which an arbitration occurs,

a converter adapted for converting the received data, and a second interface adapted for transmitting the converted data via a data link to the mobile device,

wherein the converter is adapted to convert the received data for data transmission to the mobile device into a second data protocol, in which no arbitration occurs;

wherein the data communication device converts the data received via the data bus of the vehicle into a data format for an asynchronous serial interface, for the data transmission via the second data protocol; and

wherein the data bus of the vehicle is a controller area network (CAN) bus, the data communication device converts the data received via the CAN bus into an intermediate data format, and the mobile device converts the data received from the data communication device into the data format for the asynchronous serial interface.

8. The data communication device according to claim 7, wherein the data communication device comprises a radio.