Circuit for stopping data transmission responding to low level and rapid fall of received electric field

摘要: A mobile radio communication apparatus containing: a transmission stopping unit for the operation of transmitting frequency signal when receiving stop control signal; first comparator strength indicating signal, and comparing amplitude with reference voltage to detect condition in which is below voltage, output state whether or not currently detected; obtaining outputting duration continues; detecting second decreases at rate exceeding predetermined decreasing rate; determining be stopped, based on plurality values duration, where are successively obtained within duration; generating detected.