| 摘要 |
PURPOSE: An absentia sensing apparatus and method, a user state displaying system and a method using the same, and an automatic call forwarding system and a method using the same are provided to inform other of the absence and presence of users. CONSTITUTION: A sensor unit(110) detects a user at a certain period by using a senor. A state signal generator(120) generates an absence status signal or a presence status signal according to sensed values. A transmitter(130) transmits the absence status signal or the presence status signal outside. |
