JPH04107015A - Local radio telephone system for disaster prevention - Google Patents

Abstract

PURPOSE:To cut the output of a data tone reporting the end of transmission from a speaker by delaying a reception signal by a certain time and closing a gate means at a prescribed timing at the time of detecting a data signal. CONSTITUTION:The signal received by a transmission/reception part 1 is inputted to a signal delay part 2 and a data detecting part 3. The delay part 2 delays the input signal by a certain time and outputs it to a gate circuit 4. Normally, the circuit 4 is opened, and the radio signal outputted from the delay part 2 is outputted from the speaker through the circuit 4. When transmission of the other-party station is terminated thereafter, the data signal reporting the end of transmission is received and is outputted to the delay part 2 and the detecting part 3. The detecting part 3 detects reception of this data to close the circuit 4 through a control part 6 at the end timing of output of the sound signal. Consequently, the data signal outputted from the delay part 2 following the sound signal is stopped by the circuit 4 and is not outputted from the speaker 5.

Description

DETAILED DESCRIPTION OF THE INVENTION OBJECTS OF THE INVENTION (Industrial Field of Application) The present invention relates to a local disaster prevention radio telephone device comprising a plurality of radio transmitting/receiving stations, and particularly to noise removal.

(Prior Art) Conventionally, when transmitting a voice message regarding local disaster prevention by radio from one station of local disaster prevention radio telephone equipment to another station,
At the end of the transmission, a data signal is sent to notify the end of the transmission. Therefore, at the station that received the voice message, the data sound is output from the speaker that outputs the received voice message at the end of the voice message and is heard by the operator, which is extremely annoying. There were drawbacks.

Therefore, in order to avoid this drawback, even if you receive data,
If this sound were not output from the speaker, the operator would be unable to judge whether the other station had finished transmitting by listening to the harsh data sound.

(Problems to be Solved by the Invention) As described above, in the conventional radio telephone device for local disaster prevention, when the reception of a voice message is completed, the other party receives a data tone to notify this, and upon hearing that this has been output from the speaker, the other party Since the end of the transmission is determined, the data sound cannot be cut, even though the data sound is very annoying to the operator.

Therefore, the present invention is intended to eliminate the above-mentioned drawbacks, and is a regional disaster prevention radio telephone that can cut off the output of the data sound from the speaker to notify the end of the transmission from the other station, and also notify the operator of the end of the transmission. The purpose is to provide equipment.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a local disaster prevention radio telephone device that receives voice signals and predetermined data signals and outputs them from amplification means, including a signal delay means for delaying a received signal for a certain period of time, and a signal delay means for delaying the received signal for a certain period of time. gate means for switching between opening the circuit and outputting the signal output from the means to the loudspeaker means or closing the circuit so as not to output the signal to the loudspeaker means; and a data signal from the received signal. a detection means for detecting a data signal; a control means for controlling the gate means to close at a predetermined timing when a data signal is detected by the detection means; It has a configuration comprising a notification means that notifies the operator by appealing to the operator's auditory or visual sense.

(Function) In the local disaster prevention radiotelephone device of the present invention, the five signal delay means delays the received signal for a certain period of time. The gate means switches between opening the circuit and outputting the signal output from the signal delaying means to the loudspeaker means, or closing the circuit and not outputting the signal to the loudspeaker means. The detection means detects a data signal from the received signal. The control means controls the gate means to close at a predetermined timing when the data signal is detected by the detection means. When the data signal is detected by the detecting means, the notifying means notifies the operator of the data signal by appealing to the auditory or visual sense.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the local disaster prevention wireless telephone device of the present invention. 1 is a transmitting/receiving unit that transmits and receives audio signals and data to and from the other station; 2 is a signal delay unit that delays received audio signals and data signals; 3 is a data detection unit that detects input of a data signal from the received signal;
4 is a speaker 5 for the audio signal output from the signal delay section 2;
a gate circuit that turns on/off the output to the speaker, a speaker that amplifies and outputs the voice, and a control section 6 that controls opening and closing of the gate circuit and also controls the sounding body 7 and the display section 8.

Here, the signal delay unit 2 converts the signal delay means into the gate circuit 4.
constitutes a gate means, the control section 6 constitutes a control means, and the control section 6, the sounding body 7, and the display section 8 constitute a notification means.

Next, the operation of this embodiment will be explained.

The signal received by the transmitting/receiving section 1 is input to a signal delaying section 2 and a data detecting section 3. The signal delay unit 2 delays the input signal (initially an audio signal) for a certain period of time and sends it to the gate circuit 4.
Output to. Normally, the gate circuit 4 is open, and the audio signal output from the signal delay section 2 passes through the gate circuit n4 and is output from the speaker 5. Thereafter, when the other station (not shown) completes the transmission, that is, a data signal indicating the end of the transmission is transmitted at the portion after i of the audio signal.
The transmitter/receiver 1 receives this data signal and transmits the signal to the signal delayer 2.
and output to the data verification section 3. Therefore, the data detection section 3 detects reception of this data and notifies the control section 6 of this. When the control section 6 is notified of the reception of the data, it closes the gate circuit #14 at the timing when the signal delay section 2 has just finished outputting the audio signal. Therefore, the data signal output from the signal delay section 2 following the audio signal is blocked by the gate circuit 4 and is no longer output from the speaker 3.

On the other hand, when the control unit 6 is informed of the reception of the data, it causes the sounding unit 7 to output a sound signal that is not harsh and easy to hear, and causes the display unit 8 to display a message indicating that the other station has finished transmitting. Thereby, the operator can see the sound output from the sounding unit 7 and the display on the display unit 8 and know that the other station has finished transmitting.

According to this embodiment, when data indicating the end of transmission from the other station is received, the output of this data from the speaker can be cut off, so the operator can avoid hearing the harsh data sound. . At the same time, when the reception of the data is detected, an easy-to-hear sound is emitted to notify the other station that the transmission has ended, and a display indicating the end of the transmission is displayed on the display unit 8, so the operator does not have to worry about hearing the sound. It is possible to know when the other station has finished transmitting without having to do so. It should be noted that either the sounding body 7 or the display section 8 may be used as the configuration of the above embodiment.

〔Effect of the invention〕

As described above, according to the local disaster prevention radiotelephone device of the present invention, it is possible to cut off the output of the data tone from the speaker that announces the end of the call from the partner station, and to notify the operator of the end of the call.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the local disaster prevention wireless telephone device of the present invention. 1... Transmission/reception section 2... Signal delay section 3...
Data detection unit 4...Gate circuit 5...Speaker 6...Control unit 7...Sounding body 8.
・Display Department Representative Patent Attorney Nori Chika Yudo Yamashita

Claims (1)

[Claims] A local disaster prevention radio telephone device that receives voice signals and predetermined data signals and outputs them from amplification means includes a signal delay means for delaying the received signal for a certain period of time, and a signal output from the signal delay means by opening the circuit. gate means for switching between outputting the signal to the loudspeaker means or closing a circuit so that the signal is not output to the loudspeaker means; a detecting means for detecting a data signal from the received signal; control means for controlling the gate means to close at a predetermined timing when a signal is detected;
A local disaster prevention radiotelephone device, characterized in that it comprises a notification means for notifying an operator of the data signal by appealing to his/her hearing or sight when the data signal is detected by the detection means.