| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively use a bus in limited numbers of channels by preventing useless information signals from being passed through the bus. <P>SOLUTION: A communication control method to be used in a communication system connected to a plurality of electronic devices via the bus capable of performing a communication by packets comprises the steps of providing a plurality of electronic devices including a plurality of outputting units for outputting the information signals and a plurality of inputting units for inputting the outputted information signals, counting the number of the inputting units for inputting the information signals when the outputting units output the information signals, increasing a count value of counting means based on the increase of the inputting units, decreasing the count value of the counting means based on the decrease of the inputting units, and stopping the output of the information signals when the count value of the counting means becomes 0. Thereby the information signals are outputted only when any one of the inputting units for inputting the information signals exists. <P>COPYRIGHT: (C)2004,JPO |
