Multiplex communications – Channel assignment techniques – Polling
Patent
1995-05-31
1996-12-17
Marcelo, Melvin
Multiplex communications
Channel assignment techniques
Polling
3408255, H04L 1240, H04L 2914
Patent
active
055861180
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 another 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 still another 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.
REFERENCES:
patent: 4560985 (1985-12-01), Strecker et al.
patent: 4590468 (1986-05-01), Stieglitz
patent: 4725834 (1988-02-01), Chang et al.
patent: 4964076 (1990-10-01), Schurk
patent: 5311172 (1994-05-01), Sadamori
patent: 5329528 (1994-07-01), Akai et al.
patent: 5351241 (1994-09-01), Yehonatan
Elektronik, vol. 32, No. 11, Jun. 1983, Munchen De, pp. 73-78, H. Eing Ua. "Das lokale SP-Netwerk".
Mini Micro Conference Record, 8, Nov. 1983 New York, US, pp. 1-12, M. Steiglitz, "Efficient Token Passing Through Silicon".
IEEE/AIAA 7th Digital Avionics Systems Conference Proceedings, 13, Oct. 1986, Texas (US), pp. 234-241, J. W. Meyer "SAE AF-9B Draft Standard High Speed Token Passing Data Bus for Avionics Applications".
Hashimoto Hiroshi
Ishii Jun
Nagatani Yuji
Honda Giken Kogyo Kabushiki Kaisha
Marcelo Melvin
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