| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication equipment whose constitution can be facilitated while information can be transmitted without stopping power transmission and much information can considerably be transmitted. SOLUTION: In the communication equipment, an equipment main body part H to which power is supplied from outside as terminal parts R1 and R2 communicating information with the equipment main body part H are connected through a communication line C, operation power is supplied from the equipment main body part H to the terminal pats R1 and R2 through the communication line C and information can mutually be communicated. In such a case, the equipment main body part H and the terminal parts R1 and R2 are provided with transmission parts 25 and 26 changing voltage supplied form the equipment main body part H to the communication line C between a communication lower limit value which is set to higher than lowest operation voltage required in the terminal parts R1 and R2 and a communication upper limit value which is higher than the lower limit value, and transmitting information and reception parts 27 and 28 receiving information from an opposite-side based on a voltage change in the communication line C. |
