System and method applicable to automotive vehicles utilizing time division multiplex mode for communicating data between master and slave stations

A time division multiplex communication system, comprising:

• a) a master station for sequentially accessing a plurality of slave stations according to a predetermined calling order within a predetermined period of time and for transmitting a required information to any of the slave stations on the basis of information received from one accessed slave station;
• b) a transmission line connected between the master station and the plurality of slave stations for transmitting the information between the master station and slave stations;
• and
• c) changing means, responsive to the information received from the one accessed slave station, for changing the predetermined calling order according to the information received by the master station from the one accessed slave station so as to enhance a characteristic of the system for responding to the information from the one accessed slave station,
• wherein the changing means comprises first means for changing the calling order so as to continuously access the slave stations which require an intermittent operation in response to information from the master station.

A time division multiplex communication system, comprising:

• a) a master station for sequentially accessing a plurality of slave stations according to a predetermined calling order within a predetermined period of time and for transmitting a required information to any of the slave stations on the basis of information received from one accessed slave station;
• b) a transmission line connected between the master station and the plurality of slave stations for transmitting the information between the master station and slave stations;
• and
• c) changing means, responsive to the information received from the one accessed slave station, for changing the predetermined calling order according to the information received by the master station from the one accessed slave station so as to enhance a characteristic of the system for responding to the information from the one accessed slave station, wherein:
• the changing means comprises first means for changing the calling order so as to access, in sequential proximity to the one accessed slave station, a slave station which requires an operation in response to information received by the master station from the one accessed slave station;
• and
• the slave stations include a plurality of operation units having operations portions and a plurality of terminal units each having one or more terminals corresponding to respective operation units, and
• wherein the first means includes:
• second means for collecting operation information related to operation of each operation unit with each operation unit being sequentially called;
• third means for changing the calling order to sequentially call terminal unit according to the collected operation information;
• and
• fourth means for driving the terminals corresponding to the operation unit according to the collected information when each terminal unit is called according to the changed calling order.

A time division multiplex communication system, comprising:

• a) a master station for sequentially accessing a plurality of slave stations according to a predetermined calling order within a predetermined period of time and for transmitting a required information to any of the slave stations on the basis of information received from one accessed slave station;
• b) a transmission line connected between the master station and the plurality of slave stations for transmitting the information between the master station and slave stations;
• and
• c) first means for increasing an access frequency for a particular slave station which requires a fast responsive characteristic to a predetermined higher access frequency and, with the predetermined higher access frequency for the particular slave station set, for sequentially accessing all slave stations.