Data transfer method for transferring a data frame among a plura

Multiplex communications – Wide area network – Packet switching

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370 854, 34082554, 364238, 3642222, 3642418, 364DIG1, 395290, 395291, G06F 1300

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active

054448476

ABSTRACT:
A data transfer method for transferring a data frame between a plurality of devices including a controller connected to a serial data bus comprising three lines, that is, a clock line, a data line and a control line. When the control line is at a high level, the controller sequentially distributes tokens, and the control line is kept at a low level by a master while the device which has received the token becomes the master and transfers the data frame. When the control line is at the low level, the controller supplies to the clock line a clock required to transfer the data frame.

REFERENCES:
patent: 4491946 (1985-01-01), Kryskow, Jr. et al.
patent: 4652874 (1987-03-01), Loyer
patent: 4949337 (1990-08-01), Aggers et al.
patent: 5019966 (1991-05-01), Saito et al.
Moelands, "I.sup.2 C bus in consumer applications," Electronic Components and Applications, vol. 5, No. 4, Sep. 1983 pp. 214-221.
Computer Design, pp. 40-41, Jan. 1986.

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