JPH0410122B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endless tape recorder suitable for transmitting emergency contact information in the event of a disaster, for example.

For example, when an earthquake occurs, the meteorological observatory determines that a tsunami will occur, and if there is a possibility of a tsunami occurring, it will issue a tsunami warning and ventilate the public's attention.

Such tsunami warnings are sent from the meteorological observatory to the disaster control headquarters of each municipality, and from this disaster control headquarters are sent to the disaster control headquarters of each district within the municipality.
The disaster response headquarters will inform the residents of the area.

When communicating emergency contact information such as a tsunami warning,
It is important to communicate this quickly and accurately. For this reason, meteorological observatories and each emergency response headquarters are connected via cables dedicated to telecommunications companies, making it possible to transmit emergency contact information as soon as a disaster occurs.

At the disaster control headquarters of each municipality and each district, the person in charge takes notes on the emergency contact information sent from meteorological observatories and the disaster control headquarters of each municipality. It is becoming more and more common to communicate this to people.

However, the method in which a person in charge takes notes may lead to information being misrepresented and is time consuming. For this reason, a method of recording contact information on magnetic tape is considered, but although this method allows for accurate transmission of information, it takes time to rewind and play the recorded tape, and it is not quick. .

This invention was made to deal with the above circumstances, and when used in an emergency communication system, it can contribute to quickly and accurately transmitting emergency contact information, and also makes it possible to determine whether information is necessary or unnecessary. year,
It is an object of the present invention to provide an endless tape recorder which is also useful for preventing confusion due to transmission of unnecessary information.

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a diagram showing the configuration of one embodiment.

In FIG. 1, 11 is a tape running system;
In particular, it shows the tape running path. 12 is a signal processing circuit such as a signal recording system and a signal reproducing thread. 13 is an input terminal for recording signals, and 14 is an output terminal for reproduction signals. 15 is a keyboard on which various operation keys are arranged. 16 is a terminal to which a control signal for remote control is input. Reference numeral 17 indicates the rotation of a motor in the tape drive mechanism (not shown) of the tape running system 11 according to key inputs from the keyboard 15 and control signals from the terminal 16, and the signal processing circuit 1.
This is a control circuit that sets various modes (recording, playback mode, etc.) of the tape recorder by controlling the operations of step 2.

In the tape running system 11, 111 is an endless tape, 112 is a winding frame of this endless tape 111, 113 and 114 are guide posts that guide the running of this endless tape, 115 is a capstan, and 116 is a pinch roller. Further, 117 is a reproducing head, and 118 is an erasing head.

A conventional endless tape recorder has only a playback head and an erase head, but the present invention further includes a recording head 119.
Moreover, according to the present invention, the recording mode and the reproduction mode can be set at the same time. Therefore, the signal processing circuit 12 includes a recording signal processing circuit 122 in addition to the reproduction signal processing circuit 121, and most of the circuit components of the recording signal processing circuit 122 are independent of the reproduction signal processing circuit 121. have In addition,
123 is an erase circuit.

Further, as described above, since the recording mode and the playback mode can be set at the same time, the keyboard 15 has a record/playback key 153 for setting the record mode and the playback mode at the same time, in addition to the normal playback key 151 and the stop key 152. has. Furthermore, in order to use the recording head 119 effectively, a recording key 154 is provided, which is not provided in a normal endless tape recorder.

In FIG. 2, the endless tape 111 is cut, for example, at the joint, and the three heads 119, 1 are cut.
17 and 118. As shown, the three heads 119, 117, 11
8 are arranged in the order of recording head 119→playback head 117→erasing head 118 with respect to the tape running direction (arrow x direction in the figure). Moreover, the tape length _l1 from the recording head 119 to the reproducing head 117 as seen in the tape running direction, and the reproducing head 117.
Tape length from to recording head 119 (l ₂ + l ₃ )
The relationship between the two is set so that the former is never smaller than the latter, as shown in the following equation.

l ₁ ≧ l ₂ + l ₃ As mentioned above, the recording head 119 and the reproducing head 1
17 is set to satisfy the above formula, even if the tape 111 has a recording time of 30 seconds, there is a delay time of at least 15 seconds until the signal recorded by the recording head 119 is reproduced by the reproduction head 117. can be set.

In particular, the playback head 117 viewed in the direction of tape travel.
By decreasing the interval from the recording head 119 to the recording head 119,
It is possible to set a delay time that corresponds to the tape length, that is, a delay time that is approximately the same as the recording time. Therefore, for example, rather than recording all the information, one copy of this information is continuously recorded,
If you want to play back with a predetermined time delay while recording, you can simply prepare a tape 111 with a length corresponding to the desired delay time, and the delay time can be easily set.

By the way, even among audio tape recorders that handle so-called standard tapes that have a beginning and an end, there are three-head systems that allow recording mode and playback mode to be set at the same time. The settings are made in order to monitor the recording status of the so-called recording head (corresponding to the recording head mentioned above, but this name is used especially in audio tape recorders, so this name will also be used here). In other words, the length of the tape from the recording head to the playback head as viewed in the tape running direction is very short, and the signal recorded by the recording head is immediately played back by the playback head. This immediate playback is natural for the purpose of monitoring the recording state.

In a tape recorder using such standard tape, if the tape length between the two reels can be made sufficiently long, the distance between the recording head and the playback head can be increased accordingly.
Although it is possible to increase the delay time from recording to playback, such a configuration makes the tape recorder extremely large and is not practical.

Therefore, the present invention adopts a 3-head system for an endless tape recorder, and further reverses the magnitude relationship of the two types of tape lengths l ₁ and (l ₂ + l ₃ ) from that of the normal 3-head system. This makes it possible to obtain a sufficiently large delay time. In this case, in an endless tape recorder, since the tape winding length l ₄ of the reel 112 usually accounts for a large proportion of the total tape length (l ₁ +l ₂ +l ₃ ), the recording head 119, the playback head 118, and the reel 112 are As shown in FIG. 2, the arrangement order in the tape running direction is as follows: recording head 119 → winding frame 112
→ By setting in the order of playback head 111,
The above equation can be easily satisfied without increasing the size of the tape recorder.

In addition, in a tape recorder using standard tape, it is possible to obtain a delay time by passing the output of the playback head through a delay circuit, but it is impossible to obtain a large delay time as described above due to the circuit. .

As described in detail above, according to this embodiment, with a very simple structure, it is possible to set a playback timing having a desired time with respect to the recording timing without increasing the size of the tape recorder.
Its practical value is great.

As mentioned above, the endless tape recorder can be used not only as a standalone device but also as a recording/reproducing means in a variety of systems, and its use can greatly improve the functions and performance of the system. Here, the usefulness of the present invention will be explained using a typical case in which the present invention is applied to an emergency communication system in the event of a disaster.

FIG. 3 shows a communication device designed by the applicant for communication of emergency contact information.
As described above, in emergency communication systems, it is important to accurately and quickly convey emergency contact information. It is also important to determine what information is necessary and what is unnecessary, and to prevent confusion in the transmission of unnecessary information.

The endless tape recorder of the present invention exhibits its full potential in accurately and quickly transmitting this information and in distinguishing between essential and unnecessary information.

In FIG. 3, 21 is a transmitter that transmits emergency contact information, 22 is a receiver that receives this information, and 23 is an output terminal that notifies the general public of the information received by the receiver 22, such as a speaker. It has information output means such as.

Prior to transmitting the emergency contact information signal D, the transmitter 21 sends an activation signal _S1 as shown in FIG. 4a. This activation signal _S1 is, for example, for notifying that the information signal D will be sent from now on, and is used to inform the received signal processing circuit 221 of the receiving section 22.
In response to this, a response signal as shown in Fig. 4b is sent.
S ₂ is sent to the transmitter 21.

When the transmitter 21 receives this response signal S ₂ , it transmits a recording signal S ₃ (see FIG. 4c). The received signal processing circuit 221 sends this recording signal _S1 to the first and second audio tape recorders 2 from the output terminal 1a.
22 and 223 control circuits 1b and 1c. This allows the control circuit 1b to control the tape recorder main body 2.
Set b to recording mode. In addition, the control circuit 1c
sets the tape recorder body 2c to recording and playback mode.

The first tape recorder 222 is a so-called standard type tape recorder as described above, and the second tape recorder 223 is an endless tape recorder of the present invention. The tape recorder main body 2c is the tape running system 11 as described above.
and a signal processing circuit 12. This also applies to the tape recorder main body 2b.

After transmitting the recording signal _S3 , the transmitter 21 transmits the recording signal S3, and then
The information signal D is sent as shown in FIG. The received signal processing circuit 221 outputs the received information signal D from the output terminal 2a to the amplifier circuit 3 of the tape recorder 222, 223.
Give to b, 3c. The amplification circuits 3b and 3c amplify the information signal D to a recordable level and provide it to the tape recorder bodies 2b and 2c. As a result, the tape recorder body 2b records the information signal D, and the tape recorder body 2c records and reproduces the information signal D.

The tape recorder 223 has a delay time of, for example, about 15 seconds from recording to playback, and the information signal D recorded by the recording head is guided to the switch 224 via the amplifier circuit 3c after about 15 seconds. In this case, the amplifier circuit 3c amplifies the reproduction output of the tape recorder body 2c to a level that can be supplied to the output terminal 13.

On the other hand, the information signal D is led to the speaker 225 from the output terminal 2a and is monitored. As a result, the person in charge of the receiving unit 22 needs to notify the general population of the information signal D within about 15 seconds from when the transmission of the information signal D starts until when it starts being played back on the tape recorder 223. It is possible to determine whether it is present or not. If it is determined that the information should be notified, by turning on the switch 224 during this 15 seconds, the information signal D is given to the output terminal 23 from the beginning, so the entire content of the information can be notified to the residents. . On the other hand, if you decide not to notify, just turn off the switch 224.
Confusion caused by informing residents of unnecessary information can be prevented.

When the transmission of the information signal D is completed, the transmitter 2
1 sends a stop signal _S4 as shown in FIG. 4e. As a result, the control circuit 1b automatically puts the tape recorder body 2b into the stop mode, and then
Automatically enter rewind mode. Therefore, when retransmitting the information signal D from the receiving section 22 to the output terminal 23, retransmission can be performed immediately by operating a manual reproduction key (not shown) connected to the control circuit 1b. It becomes possible.

On the other hand, when the control circuit 1c receives the stop signal _S4 , it sets the tape recorder body 2c to the stop mode about 15 seconds later, that is, after all reproduction is completed.

Note that stopping the tape recorder bodies 2b and 2c based on the stop signal _S4 (stopping the tape recorder body 2b at the time of retransmission) is done, for example, by a tape recording signal.

That is, when the stop signal _S4 is sent, the control circuits 1b and 1c turn on the timer provided inside them, and during the on period of this timer, the tape recorder main bodies 2b and 2c record a predetermined signal on the tape. be recorded. Then, when the timer turns off, the control circuit 1b puts the tape recorder body 2b into a stop mode and then into a rewind mode. on the other hand,
The control circuit 1c detects the predetermined signal from the playback output of the tape recorder main body 2c, and puts the tape recorder main body 2c into a stop mode in accordance with this detection output.

The same goes for stopping the tape recorder main body 2b when retransmitting information, and the control circuit 1b detects the above-mentioned predetermined signal from the playback output of the tape recorder main body 2b, and puts the tape recorder main body 2b into the stop mode according to this detection output. Then switch to rewind mode.

In this way, by controlling the stop of the tape recorder main body 2c and the stop of the tape recorder main body 2b during re-transmission using the tape recording signal, it is possible to reliably reproduce the recorded contents completely. For example, when setting the stop timing using a timer, it is necessary to change the timer set time depending on the length of the tape and the length of the recording time. A configuration in which the stop timing is determined based on the above has the advantage that such a changing operation is not required.

According to the above configuration, the emergency contact information from the transmitting section 21 is recorded on the tape recorder 223 of the receiving section 22, and is given to the output terminal 23 as a playback output of this tape recorder 223, so that accurate transmission of information is possible. be.

Furthermore, this tape recorder 223 can perform recording and playback at the same time, and the time delay in playback output is about 15 seconds, so information can be transmitted quickly.

Furthermore, by being able to determine whether information is necessary or unnecessary during a delay of approximately 15 seconds, confusion caused by the transmission of unnecessary information can be prevented.

As described above, according to the present invention, it is possible to delay and reproduce the recorded signal by a desired amount of time while recording, thereby making it possible to accurately and quickly transmit emergency contact information and transmit unnecessary information in the event of a disaster. It is possible to provide an endless tape recorder that can contribute to preventing confusion caused by.

[Brief explanation of drawings]

FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram for explaining the main part of FIG. 1, and FIG. 3 is an emergency communication system configured using the endless tape recorder of the present invention. FIG. 4 is a timing chart for explaining the operation of FIG. 3. 111... Endless tape, 112... Winding frame, 1
17... Playback head, 118... Erase head, 119
...Record head.

Claims (1)

[Scope of Claims] 1. A recording head for recording signals on an endless tape; a reproducing head capable of reproducing signals recorded on the endless tape by the recording head during the recording operation of the recording head; and the recording head. an erasing head for erasing signals recorded on the endless tape, the recording head, the reproduction head, and the erasing head are arranged in this order along the running direction of the endless tape, and The endless tape is characterized in that the arrangement positions of the recording head and the reproducing head are set so that the length of the tape from the recording head to the reproducing head when viewed from above is greater than or equal to the length of the tape from the reproducing head to the recording head. Tape recorder.