Communication system having a can bus and a method for operating such a communication system
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G06F-013/36
G06F-013/40
출원번호
US-0811510
(2009-03-04)
등록번호
US-8819327
(2014-08-26)
우선권정보
DE-10 2008 000561 (2008-03-07)
국제출원번호
PCT/EP2009/052527
(2009-03-04)
§371/§102 date
20100701
(20100701)
국제공개번호
WO2009/109590
(2009-09-11)
발명자
/ 주소
Hartwich, Florian
출원인 / 주소
Robert Bosch GmbH
대리인 / 주소
Kenyon & Kenyon LLP
인용정보
피인용 횟수 :
1인용 특허 :
6
초록▼
A communication system having one CAN bus and at least two devices interconnected by the CAN bus is described, at least one of the devices including: i) a CAN controller, which is suitable for transmitting CAN data frames over the CAN bus using a first physical protocol in a first operating mode; ii
A communication system having one CAN bus and at least two devices interconnected by the CAN bus is described, at least one of the devices including: i) a CAN controller, which is suitable for transmitting CAN data frames over the CAN bus using a first physical protocol in a first operating mode; ii) an asynchronous serial communication interface unit, which is suitable for transmitting ASC data frames over the CAN bus using a second physical protocol in a second operating mode; iii) a first switching means, which is suitable for switching the first operating mode and the second operating mode depending on at least one agreement in effect between the device and at least one of the other devices; and iv) another switching means, which is suitable for switching the device to a third (restricted) operating mode, which differs from the first operating mode and the second operating mode, for powering up the device.
대표청구항▼
1. A communication system, comprising: a CAN bus;at least two devices interconnected via the CAN bus, at least one of the devices including: a CAN controller adapted to CAN data frames over the CAN bus using a first physical protocol in a first operating mode;an asynchronous serial communication int
1. A communication system, comprising: a CAN bus;at least two devices interconnected via the CAN bus, at least one of the devices including: a CAN controller adapted to CAN data frames over the CAN bus using a first physical protocol in a first operating mode;an asynchronous serial communication interface unit adapted to transmit ASC data frames over the CAN bus using a second physical protocol in a second operating mode;a first switch adapted to switch between the first operating mode and the second operating mode, as a function of at least one agreement in effect between the device and at least one other device; anda second switch adapted to switch the device to a third operating mode, which is different from the first operating mode and the second operating mode, for powering up the device, wherein in the third operating mode the device is prevented from participating in ASC-based communication over the CAN bus. 2. The communication system as recited in claim 1, wherein an error counter of the device is stopped in the third operating mode and neither error frames nor overload frames are transmitted at a dominant bus level. 3. The communication system as recited in claim 1, wherein the device, in the third operating mode, is adapted to listen in on the CAN bus for CAN messages for reference messages from other devices connected to the CAN bus. 4. The communication system as recited in claim 3, wherein the device, in the third operating mode, is adapted to transmit a CAN acknowledgment message, if it has heard an error-free CAN data frame on the CAN bus. 5. The communication system as recited in claim 1, wherein the second switch is adapted to automatically switch the device to the third operating mode, as a function of an operating state of the device. 6. The communication system as recited in claim 5, wherein the second switch is adapted to switch the device to the third operating mode when the device is in an operating state of Sync_Mode=Sync_Off or Sync_Mode=Synchronizing. 7. The communication system as recited in claim 5, wherein the second switch is adapted to switch the device to the first or second operating mode when the device is in an operating state of Sync_Mode=In_Gap or Sync_Mode=In_Schedule. 8. The communication system as recited in claim 1, wherein: the at least one of the devices is configured to switch out of the third operating mode after successfully synchronizing with another of the at least two devices over the CAN bus. 9. A communication system, comprising: a CAN bus;at least two devices interconnected via the CAN bus, at least one of the devices including: a CAN controller adapted to CAN data frames over the CAN bus using a first physical protocol in a first operating mode;an asynchronous serial communication interface unit adapted to transmit ASC data frames over the CAN bus using a second physical protocol in a second operating mode;a first switch adapted to switch between the first operating mode and the second operating mode, as a function of at least one agreement in effect between the device and at least one other device; anda second switch adapted to switch the device to a third operating mode, which is different from the first operating mode and the second operating mode, for powering up the device;wherein the device, in the third operating mode, is adapted to transmit a CAN reference message over the CAN bus if it has not received any reference message from other devices connected to the CAN bus within one communication cycle of the CAN bus. 10. A communication system, comprising: a CAN bus;at least two devices interconnected via the CAN bus, at least one of the devices including: a CAN controller adapted to CAN data frames over the CAN bus using a first physical protocol in a first operating mode;an asynchronous serial communication interface unit adapted to transmit ASC data frames over the CAN bus using a second physical protocol in a second operating mode;a first switch adapted to switch between the first operating mode and the second operating mode, as a function of at least one agreement in effect between the device and at least one other device; anda second switch adapted to switch the device to a third operating mode, which is different from the first operating mode and the second operating mode, for powering up the device;wherein the second switch is adapted to switch the device to the third operating mode via a special configuration bit. 11. A method for operating a communication system having a CAN bus and at least two devices interlinked via the CAN bus, the method comprising: switching at least one of the devices between different operating modes;transmitting, by a CAN controller of one of the devices, CAN data frames over the CAN bus in a first operating mode using a first physical protocol;transmitting by an asynchronous serial communication interface unit of the device ASC data frames over the CAN bus using a second physical protocol in a second operating mode; andswitching the device to a third operating mode, which is different from the first operating mode and the second operating mode, for powering up the device, wherein in the third operating mode the device is prevented from participating in ASC-based communication over the CAN bus. 12. The method as recited in claim 11, further comprising: during the third operating mode, synchronizing with another device on the CAN bus; andafter successfully synchronizing with another of the at least two devices over the CAN bus, switching out of the third operating mode.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (6)
Masuda,Toshio; Yamamoto,Kenichi; Hijikata,Kenji; Satomura,Satoshi; Oishi,Hiroshi; Sunaguchi,Toyohide; Iwakami,Yoshio; Homma,Munenori; Atake,Atsushi; Kaneda,Kouji; Fukuda,Tatsuru; Yuki,Minoru; Ushiki,Masayuki; Kobayashi,Tsuyoshi; Motoi,Masahito; Shibata,Naoki; Ogiwara,Hiroshi; Igarashi,Katsumasa; Shinozuka,Junzo; Nakamura,Akihisa, Driving force controller for a vehicle.
Grant Philip (Crewe GBX) Becker Michael Christopher (Stoke-on-Trent GBX) Brassington David (Crewe GBX) Butler Philip Samuel (Crewe GBX) Hutson Steven Graham (Cheshire GBX) Fullalove Nicholas Jonathan, Vehicle electronic control apparatus.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.