| 摘要 |
PURPOSE:To prevent mis-display due to noise by returning information transmitted from the transmission side to discriminate whether or not data is transmitted correctly. CONSTITUTION:When a transmission request signal is transmitted from a receiver 5 to a transmitter 2, the transmitter codes state information of sensors 1a-1n and transmits it to the receiver 5 together with the state information outputted from a memory 3. The receiver 5 receives the state information, stores it temporarily and returns entirely the same information to the transmitter 2. The transmitter 2 compares the information transmitted before with the return information and when they are coincident, the confirming signal whose coincidence is confirmed is transmitted to the receiver 5. The receiver 5 receiving the confirming signal transmits the signal received previously to the display device 6. |
