| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a data transmission system for increasing transmission distance and communication speed in communication using a communication protocol of a survival system, and to obtain an air conditioner including the data transmission system. <P>SOLUTION: The data transmission system includes: a transmission circuit 103 for modulating communication information, where priority information for identifying a priority level in signal collision is disposed at the top of a communication frame, to a pulse signal for transmission; a receiving circuit 102 for receiving the pulse signal transmitted from a transmission line 20; a collision detection unit 104 for detecting a collision between the pulse signal transmitted through the transmission line 20 and the pulse signal transmitted from the transmission circuit 103 by the pulse signal of the priority information and performing survival control according to the priority order; and a communication speed change control unit 105 for changing modulation speed of the transmission circuit 103. The priority information is modulated to a pulse signal at a first modulation speed, and information except the priority information is modulated to a pulse signal at a second modulation speed faster than the first modulation speed. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
