| 摘要 |
PROBLEM TO BE SOLVED: To unify three functions such as a portable telephone set call reception calling function, a theft/missing prevention warning function and a timer alarm function through a common microcomputer control. SOLUTION: This device consists of a detection section A, a reception section B, a timer alarm clock section E, a microcomputer main control section D, a function operation control section F, and a power supply section P. The detection section A senses and shapes a call reception call radio wave from an external portable telephone set X and amplifies the signal and gives the result to the control section D as a gate signal. The reception section B receives, detects and shapes a radio wave sent from a theft/missing prevention transmitter T being a separate portable module, and gives the amplified signal to the control section D as a gate signal. The control section D controls the functions A, B, E and activates motor timer vibration or buzzer tone in response to the gate signals received from the sections A, B or a timer alarm signal set by the clock section E. The control section F has a timer function to lock the detection of a sent radio wave, a function of stopping calling of the portable telephone set and a function of adjusting detection sensitivity and integrates each function through a common microcomputer control. |
