Patent ID: 7459625
Filing Date: 2008-12-02
Classification: G10H

Abstract:
1. A transmitting node device connected to a bus for transferring data during each of a plurality of time frames on a time divisional basis within one sampling period, the bus comprising a plurality of data signal lines and one frame signal line, said bus operatively coupled to at least one receiving node and to a plurality of other transmitting nodes of the same structure as the transmitting node device, wherein each of the transmitting nodes is assigned a unique frame number such that the frame numbers collectively compose a consecutive order, wherein each of the transmitting nodes transmit one frame to the bus during different timing in a sequential manner and in accordance with the respective frames assigned, wherein only one transmitting node transmits a frame during a given period of time, and wherein said receiving node is designated one of said plurality of frame numbers and selectively acquires, in accordance with the designated frame number, data in a frame transmitted by a transmitting node during the frame that corresponds to the designated frame number, the transmitting node device comprising: a frame counter that counts a number of the frames on the basis of a frame signal transferred by the frame signal line within the sampling period; a first register that stores the unique frame number, assigned to the transmitting node device, designating a transmission frame by which the transmitting node device should transmit data; a second register that stores the data to be transmitted via the bus during the transmission frame; a comparator that outputs a coincidence signal when detecting that the number of the frames counted by the frame counter coincides with the frame number stored in the first register; and a transmitting section that forms a frame signal corresponding to the transmission frame and transmits the formed frame signal to the frame signal line of the bus in response to the coincidence signal, and concurrently transmits the data stored in the second register to the data signal lines by the transmission frame.