JPS6033648Y2 - automatic telephone answering device - Google Patents

Description

[Detailed description of the invention] This invention relates to an automatic telephone answering device having security and crime prevention functions.

The automatic telephone answering devices currently in use are those that record a message from the caller after answering when a call comes in from outside, and that also allow the owner of the device to record a message from the caller via the telephone line. There is a system in which the recorded message can be played back and listened to by remote control.

By the way, in the case of the latter, it is possible to call someone who is not home and to close the telephone line.

This idea was developed from the viewpoint of rescuers, and its purpose was to use the fact that the telephone line was closed by remote control from outside to record sounds inside the house when the house was away. To provide an automatic telephone answering device capable of collecting data and listening to whether or not there is an abnormality.

Next, one embodiment of this invention will be described with reference to the drawings.

1 is a connection terminal to a telephone line; 2 is a starting circuit that rectifies and accumulates a calling signal that arrives at the connection terminal 1; and after 3 to 50 seconds, drives a timer circuit 3 to be described later; timer circuit 3 is a starting circuit 2; This circuit is driven by the output of the automatic telephone answering device and defines the total operating time of the automatic telephone answering device.

In this timer circuit 3, when a relay Y3, which will be described later, is operated and a contact y34 is closed, the elapsed time of the timer is temporarily interrupted, and the timer circuit 3 is extended by one hour while the contact y34 is closed.

Y1 is a three-contact point y11.Y1 excited by the output of the timer circuit 3 described above. y1□, y13; 4 is the contact point y1. of connection terminal 1 and relay Y1; A matching transformer 5 connected to the matching transformer 4 is connected to the secondary side of the matching transformer 4, and an amplifier T5 amplifies the reproduced signal from the magnetic head H1.
1 is a response tape on which response terms are pre-recorded;
In the embodiment, the shape is endless.

CP is a contact piece that detects the conductive foil S stuck on the response tape T□, T2 is a 4-contact that operates when the contact piece CP slides with the conductive foil S of the response tape T□, ~2□~3 '24 relay 5 amplifies the message signal from the caller and records it on message recording tape T2 via magnetic head H2, or relay Y3, which will be described later, is energized and its contact z#3ya*3 An amplifier that amplifies the signal from the magnetic head H2 that plays back the message recording tape T2 when '33 is switched, and 7 is a remote control signal detector connected to the secondary side of the matching transformer 4 via the contact Y25 of the relay Y2. This is a circuit that sends out separate outputs when two types of remote control signals, which are different from normal message signals, arrive.

The two types of remote control signals are message recording tape T2.
, and listen to the message from the microphone M.

8 is a delay circuit which inverts a remote control signal generated when you wish to listen to a message (hereinafter referred to as message remote control signal) with the signal detected by the remote control signal detection circuit 7, and energizes relay Y3 for a desired time; It is possible to change the amount according to the amount recorded on the recording tape T2.

9 is the remote control signal (
This delay circuit inverts the signal detected by the remote control signal detecting circuit 7 (hereinafter referred to as an indoor sound remote control signal) and energizes the relay Y4 for a certain period of time.

T3 is a 4-contact y3□~ that operates with the output from the delay circuit 8.
A relay having y34 and T4 are relays having two contacts, ~, □ to y4□, which are operated by the output from the delay circuit 9.

In FIG. 2, AC is a power source, Ml is a motor for driving the response tape T1, and pigeon is a motor for driving the message recording tape T2.

Next, to explain the operation based on the above structure, when a calling signal, a so-called bell signal, arrives at the connection terminal 1 to all telephone lines,
The signal is led to the starting circuit 2 via the connection capacitors C1 and C2.

This starting circuit 2 starts from 3 when the first calling signal arrives.
~Produce output after river seconds.

This output causes the timer circuit 3 to start operating, operate for a preset time, and then output.

Then, the relay Y1 is activated by the output of this timer circuit 3, and its contact is ~1. -y13 is switched from the state shown in the figure, and the telephone line is connected to the matching transformer 4 by switching the contact y□.

This closes the communication circuit, but since the contact y1 is closed and the motor M1 for driving the response tape T1 operates, the response words on the response tape T1 are reproduced by the magnetic head H1 and are also reproduced by the amplifier 5. It is amplified and transmitted to the calling party.

When the message message for the caller to leave a message is finished, the answering tape T1 becomes endless, so after approximately one turn, the answering tape T1 is affixed to the answering tape T1. The conductive foil S shorts the contact piece CP, and the contact y1
Connect one end of 3 to ground.

At this time, since the contact 'J13 is closed, relay Y
2 is activated, and its contacts 7 to y25 are switched from the illustrated state.

Since the contact y21 is closed here, the relay Y2 is self-held even if the contact piece CP is opened.

Further, by opening the contact y2□, the motor M1 is stopped, and the running of the response tape T1 is stopped.

On the other hand, by closing contact y23, motor M2
rotates, and the message recording tape T2 starts running.

Next, in the above situation, if the calling party does not issue a remote control signal, in other words, if the situation is the opposite of normal, the message sent by the calling party will be sent to contact y□1, matching transformer 4
, contact 3''24?3'3°, y41 amplifier 6, contact 319 is recorded on message recording tape T2 via magnetic head H2.

Then, for a certain period of time by the timer circuit 3 (for example, 3# to 1
minutes), relay Y□ is restored and its liquid cooling y□□~'/
x3 returns to its original state, that is, contact point y works.

By opening, relay Y2 becomes inactive, remoter M2 stops, and the recording operation ends, and by switching contact y11, the communication circuit of the telephone line is opened, entering a standby state, and the series of operations ends. do.

On the other hand, when the above-mentioned response operation is completed and the relay Y2 is activated to enter the recording state, when the calling party issues a message remote control signal, the remote control signal is of course recorded on the message recording tape T2. Since the contact y25 is closed, the remote control signal detection circuit 7 checks the duration (approximately 5 seconds), and when it confirms that it is a message remote control signal, sends out the signal.

This signal causes delay circuit 8 to operate for a desired period of time to excite relay Y3.

As a result, the contacts 3'31 to 3'34 are switched from the illustrated state, and the delay circuit 8 operates to wind the message recording tape T2. Please refer to Utility Model Publication No. 48-107018 and Utility Model Application Publication No. 50-54007, which have already been filed by Mr.

When the message recording tape T2 is completely wound, playback starts, and the magnetic head H2, contact y, amplifier 6,
The signal is transmitted to the calling party via contact 33, matching transformer 4, and contact y1□.

After this playback is completed and the delay time elapses, the relay Y3 is de-energized, so the device returns to the message recording state, and recording is enabled until the time of the timer circuit 3, which was temporarily interrupted by the contact Y34.

After the time set by the timer circuit 3, the device enters a standby state by the same operation as described above.

Furthermore, when the above-mentioned response operation is completed and relay Y2 is activated to enter the recording state, when the caller side issues a remote control signal for indoor sound, that signal is sent to contacts y249 y3°,
The signal is recorded on the message recording tape T2 via the amplifier 6, the contact y31, and the magnetic head H2, and the remote control signal detection circuit 7 confirms that it is a remote control signal for indoor sound, and sends the output to the delay circuit 9.

Therefore, relay Y4 is energized and its contacts are y4N 3
'42 is switched from the illustrated state.

As a result, the signal caught by microphone M is transferred to contact y41.
Amplifier 6, contact y4°, matching transformer 4, contact y1. is transmitted to the caller via amplifier 6, contact y3
1. The message is recorded on the message recording tape T2 via the magnetic head H2.

Therefore, if any sound is heard in the room where the microphone M is installed, this sound will be transmitted to the caller, and the caller will be able to know of an abnormality in the room.

After a delay time by the delay circuit 9, the power supply to the relay Y4 is cut off, and after one time by the timer circuit 3, the relay Y4 enters a standby state by the same operation as described above.

Although the above embodiment has been described in which the remote control signal detection circuit 7 operates after the response operation, it is also possible to directly detect the remote control signal.

It is also possible to directly detect remote control signals without any response or message recording operations.

As mentioned above, this idea uses two types of remote control signals, and when the first remote control signal is received, the microphone is cut off and only the tape playback sound is transmitted, and when the second remote control signal is sent, the tape playback sound is blocked. Since only the microphone is connected to the line,
Since the S/N ratio is good and both the tape playback sound and the guidance sound can be clearly heard, it can be used not only as a normal answering machine but also as a security device.

[Brief explanation of drawings]

The figures show an embodiment of the automatic telephone answering device according to this invention, with FIG. 1 being a schematic block diagram and FIG. 2 being a block diagram of the driving portion. 2...Start circuit, 3...Timer circuit, 6...Amplifier, M...Microphone, Y,
······relay.

Claims (1)

[Scope of utility model registration request] By remote control, when a calling signal is detected, the primary side of the transformer is connected to the telephone line by switching the contacts on the primary side of the transformer, and voice signals are sent and received from the secondary side of the transformer. In an automatic telephone answering device capable of rewinding and reproducing a message recording tape, a first remote control signal and a second remote control signal different from the first remote control signal are detected, and the first remote control signal is detected. a remote control signal detection circuit that outputs a first signal when the second remote control signal is detected, and outputs a second signal when the second remote control signal is detected;
a microphone installed in the room to pick up sounds in the room; an amplifier for amplifying the signal arriving at the secondary side of the transformer or the signal to be sent out; switching means is provided to record the signal from the transformer on the message recording tape via the amplifier and to record the signal from the microphone when both the first and second signals are not output. The signal is prohibited from being sent to the transformer, and when the first signal is output, the message recording tape is rewound and played back to be sent to the transformer via the amplifier and the first signal is output. It is characterized in that the signal from the microphone is prohibited from being sent to the transformer, and when the second signal is output, only the signal from the microphone is sent to the transformer via the amplifier. Automatic telephone answering device.