Abstract: A portable terminal device comprises an antenna for receiving radio waves from a base station, an incoming call alarm for notifying the user of the reception of radio waves, a control circuit provided between the antenna and the alarm for activating the alarm and a memory. The memory is capable of storing therein a predetermined incoming call rejecting condition or incoming call notifying condition via the control circuit. The control circuit includes comparison means for detecting whether one of information as to the current time and date, information as to the self-location of the device and information as to the caller or the combination of these items of information is in match with the incoming call rejecting condition or incoming call notifying condition stored in the memory. The control circuit has the function of changing over to predetermined incoming call rejecting means or incoming call notifying means when a match is obtained.

Abstract: A portable terminal device comprises an antenna for receiving radio waves from a base station, an incoming call alarm for notifying the user of the reception of radio waves, a control circuit provided between the antenna and the alarm for activating the alarm and a memory. The memory is capable of storing therein a predetermined incoming call rejecting condition or incoming call notifying condition via the control circuit. The control circuit includes comparison means for detecting whether one of information as to the current time and date, information as to the self-location of the device and information as to the caller or the combination of these items of information is in match with the incoming call rejecting condition or incoming call notifying condition stored in the memory. The control circuit has the function of changing over to predetermined incoming call rejecting means or incoming call notifying means when a match is obtained.

Abstract: A circuit for use in reproducing a PCM signal recorded on a recording medium in a normal mode and a special mode, to control the frequency of a reproduction clock in accordance with variations in the frequency of the PCM signal. The speed of the medium and the speed of the head, or the frequency of a single-frequency signal in a track format recorded on the signal recording track of the medium is detected to produce a band control signal in accordance with the PCM signal frequency to shift the operating band of a voltage-controlled oscillator in the circuit.