CA2226421A1 - Data transmission method and system therefor - Google Patents
Data transmission method and system thereforInfo
- Publication number
- CA2226421A1 CA2226421A1 CA002226421A CA2226421A CA2226421A1 CA 2226421 A1 CA2226421 A1 CA 2226421A1 CA 002226421 A CA002226421 A CA 002226421A CA 2226421 A CA2226421 A CA 2226421A CA 2226421 A1 CA2226421 A1 CA 2226421A1
- Authority
- CA
- Canada
- Prior art keywords
- data
- control systems
- transmission
- retransmission
- data transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Small-Scale Networks (AREA)
Abstract
A data transmission system for a vehicle includes a plurality of control systems installed on the vehicle, and a network bus connecting the plurality of control systems with each other for circulating a transmission right through the plurality of control systems to thereby perform transmission of a message between the plurality of control systems. According to a first aspect, each of the control systems starts transmitting data when it is detected that the transmission right is not generated or lost from the system, and continues transmitting the data when no collision of data transmitted from the present control system with data transmitted from the rest of the plurality of control systems, or when by mediation for avoiding the collision is detected, it is determined to continue data transmission. According to a second aspect, the maximum number of times of retransmission to be permitted is determined according to a type of failure in transmission identified, and the retransmission is performed so long as the number times of retransmission of the data does not exceed the maximum number of times of retransmission to be permitted. According to a fourth aspect, the message comprises a first response field for receiving a first acknowledging response output from a control system having received the transmission right, and a second response field for receiving a second acknowledging response output from a control system having received data.
Applications Claiming Priority (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5048560A JP2947437B2 (en) | 1993-02-15 | 1993-02-15 | Data transmission method |
JP5-48560 | 1993-02-15 | ||
JP5048559A JP2857655B2 (en) | 1993-02-15 | 1993-02-15 | Vehicle data transmission system |
JP5-48559 | 1993-02-15 | ||
JP5080216A JP2784709B2 (en) | 1993-03-15 | 1993-03-15 | Vehicle data transmission system |
JP5-80216 | 1993-03-15 | ||
JP5-84079 | 1993-03-18 | ||
JP5084079A JP2947496B2 (en) | 1993-03-18 | 1993-03-18 | Vehicle data transmission system |
CA002115730A CA2115730C (en) | 1993-02-15 | 1994-02-15 | Data transmission method and system therefor |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002115730A Division CA2115730C (en) | 1993-02-15 | 1994-02-15 | Data transmission method and system therefor |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2226421A1 true CA2226421A1 (en) | 1994-08-16 |
CA2226421C CA2226421C (en) | 2002-10-08 |
Family
ID=27508539
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002226421A Expired - Fee Related CA2226421C (en) | 1993-02-15 | 1994-02-15 | Data transmission method and system therefor |
CA002226477A Expired - Fee Related CA2226477C (en) | 1993-02-15 | 1994-02-15 | Data transmission method and system therefor |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002226477A Expired - Fee Related CA2226477C (en) | 1993-02-15 | 1994-02-15 | Data transmission method and system therefor |
Country Status (1)
Country | Link |
---|---|
CA (2) | CA2226421C (en) |
-
1994
- 1994-02-15 CA CA002226421A patent/CA2226421C/en not_active Expired - Fee Related
- 1994-02-15 CA CA002226477A patent/CA2226477C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2226421C (en) | 2002-10-08 |
CA2226477A1 (en) | 1994-08-16 |
CA2226477C (en) | 2002-07-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |