Multiplex communications – Wide area network – Packet switching
Patent
1992-04-21
1995-08-22
Richardson, Robert L.
Multiplex communications
Wide area network
Packet switching
370 854, 34082554, 364238, 3642222, 3642418, 364DIG1, 395290, 395291, G06F 1300
Patent
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.
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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.
Matsushita Electric - Industrial Co., Ltd.
Richardson Robert L.
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