JPS6020940B2 - Remote listening answering machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present application relates to an improvement in a remote control method for a remote listening answering machine.

In other words, in this case, there were two types of systems: one in which the receiving tape was remotely controlled while it was running, and one in which the response tape was remotely controlled while it was running. In an answering machine that is remotely controlled while driving,
It is necessary to prevent various malfunctions from occurring if the user mistakenly transmits the signal while the receiving tape is being driven, and the present invention makes this possible. In other words, the purpose of the present application is to provide a method for quickly driving a motor using the recorded signal when a user accidentally issues a remote control signal that should be issued while the response tape is being driven while the receiving tape is running. The purpose is to change the frequency range by tightening the frequency and prevent malfunctions due to this.

The specific construction and operation of the embodiments of the present invention will be explained below.

First, we will discuss the main parts and their functions.

R is a resistor, C is a capacitor, D is a diode, and Q is a transistor. NE is a neon tube, and the photoreceptor c
It is paired with ds to form a photo isolator. LT is a line transformer for coupling the central office line and this device. A-1 is a calling signal amplification circuit, A-2 is a voice amplification circuit, and A-3 is a remote control signal amplification circuit. T-
1 is a response tape, T-2 is a reception tape, and EH
-1, RPH-1 and EH-2, RPH-2 are heads for erasing and mirror reproduction, respectively. A is a loop relay, B is a recording relay of the T-2 above, C is a remote control relay, D is a relay for running the T-2 during remote control, and their contacts are a-1. ,a-2...
It is displayed as... F' is a micro fork with the same frequency as the remote control signal, 1 is a Schmitt circuit, and 2 is a flip-flop composed of a relay, IC, or transistor. It is reset by the second remote control signal. 3 is an electronic governor circuit for the DC motor M, which is configured to rotate the DC motor M at a higher speed than the constant speed while the transistor Q7 is on.

Next, the automatic operation when there is an incoming call from a third party will be described.

That is, when a calling signal from a third party is applied to terminals L1 and L2, neon tube NE lights up, and this signal is amplified by amplifier circuit A-1 via photoreceptor C, turning on switching transistor QI. Activate relay A with no load. child)
Contacts a-1 and a-2 of relay A are made. Therefore, a loop is formed from contact a-1, and the ringing signal stops ringing. Also, the contact a-2 energizes the driving plunger SDI of the response tape T-1 via the contacts c-1 and b-1, and charges the timer capacitor C-1 via the diode DI. At the same time, a bias is applied to the base of transistor Q-1 via resistor R4 to maintain relay A in the operating state. At the same time, the DC motor M is started by supplying power to the electronic governor circuit 3 via the contacts a-2. At this point, the response tape T-1 starts running in the direction of the arrow. This electronic governor
To describe circuit 3 in more detail, as described above, when the power is turned on via contact a-2, capacitor C6
The charging current brings the transistor Q6 into a completely saturated state for about one second, thereby increasing the terminal voltage of the DC motor M and increasing the starting torque. This is because a large torque is required to rotate the flywheel when starting the DC motor M. After the DC motor M is started, the DC motor M rotates at a constant speed due to the bias applied through the transistor Q5, which is set to an appropriate operating point by the semi-fixed resistor VR2, and the transistor Q6 is in an unsaturated state. Note that the transistor Q7 connected to this circuit will be described later, but
It is also possible to change the connection between the collector and emitter of Q7 and connect it to both ends of the resistor R23 in series with the semi-fixed resistor VR2. In this way, when Q7 is turned on, both terminals of R23 will be shorted, so the semi-fixed resistor VR
This is equivalent to 2 moving upwards as seen from the diagram,
This can also increase the unsaturated state of Q5 and reduce the rotational speed of the motor, as described above.
Now, as mentioned above, when the response tape T-1 starts running, the pre-recorded response terms are displayed on the mirror head RPH.
-1, is amplified by the amplifier circuit A-2 via contacts b-3 and c-3, and is further added to the tertiary winding T-law of the line transformer LT via contact b-4 and resistor R7. ) and 1
It is induced by the next line PR and is sent to a third party.

Subsequently, when the response tape T-1 goes around once and the conductor foil P-1 attached to the starting point contacts the electrode CP-1, the resistance R5
Transistor Q2 is turned on via , energizing relay B of the load, and switching contacts b-1, b-2, b-3, and b-4 to the make side. Therefore, the plunger SDI is restored through contact b-1, and SD2 is operated, so that the running of the response tape T-1 is stopped and the normal feeding of the reception tape T-2 is started. Further, a holding circuit for relay B is formed by contact b-2, and a recording circuit is formed by contacts b-3 and b-4. Therefore, when an intercom message from a third party is transferred from the primary feeder PR of the line truss to the secondary winding SEC, the resistor R2, contacts b-3, c-3, amplifier circuit A-2, contact b -4, resistor R-8, and contact c-4 to the recording/reproducing head RH-2, where it is recorded on the receiving tape T-2. During this time, relay A is connected to capacitor CI.
After a predetermined period of time, the discharge of CI ends and transistor QI turns off, relay A is restored, and at the same time, the power to each circuit is cut off and the standby state is restored. In this way, the above-described operation is repeated every time a call arrives. Next, a process in which the owner remotely listens to an incoming message from a third party recorded on the receiving tape will be described.

The remote control signal for this purpose is, in principle, sent out while the response tape T-1 is being driven. However, as an object of the present invention, there is no problem even if the receiving tape T-2 is sent out by mistake after being switched to the recording state. First, a case will be described in which a remote control signal is sent while the response tape T-1 is being driven.

That is, when this device is called and a remote control signal is sent while the response tape T-1 is being played, the primary winding PR of the line transformer LT is transferred to the secondary winding SEC, and the signal is transferred to the amplifier circuit A via the resistor R3. After being amplified by 13, it passes through a microfork F having the same frequency as the remote control signal, and is further separated into two parts from the emitter side of transistor Q3.
It is rectified by D3 and starts charging the capacitor C3.

When the above remote control signal is continuously sent for about 1 second or more, a predetermined charge is accumulated in the above C3, which triggers the Schmitt circuit 1, and the output of the Schmitt circuit 1 sets the flip-flop circuit 2. Therefore, the output turns on the transistor Q4 and energizes the load relay C. ), contacts c-1, c-2 of relay C
, c-3, and c-4 are switched to the make side. Therefore, the contact c-1 restores the plunger SDI for driving the response tape T-1, so the response tape T-1 stops running midway. In this case, since the response term cannot be used, it can be confirmed that the remote control has definitely started, and the transmission of the above-mentioned remote control signal can be stopped. At the same time, the above contact c-1
unwinding plunger SDR via contact d-2.
is energized, and therefore the rewinding of the receiving tape T-2 starts. In addition, the receiving tape erasing head EH- is connected to the contact c-2.
2 is cut off, and input terminal 2 of AND circuit 4 is turned off.
Raise it to H. Further, contacts c-3 and c-4 form a reproducing circuit for the receiving tape T-2. On the other hand, the remote control signal separated from the emitter side of the transistor Q3 is transmitted to the diode 04, via the capacitor C4.
It is rectified by D5 and starts charging the capacitor C6.

However, since the capacitance of capacitor C5 is smaller than the capacitance of capacitor C3, C3 reaches a predetermined charge after the remote control signal is applied for about 1 second as described above, whereas C5 reaches a predetermined charge of about 0.2 When the sand reaches a predetermined charge, the input terminal 1 of the AND circuit 4 is pulled up to "H". In order for the output terminal 3 of this AND circuit 4 to become "H", input terminals 1 and 2 must be simultaneously "H". As is clear from the above, this point is about 1 hour after the start of transmitting the remote control signal.
This is the period from when the relay c operates after seconds until the remote control signal is stopped. In this way, when the output terminal 3 of the AND circuit 4 becomes "H", the bias applied through the resistor R21 switches the transistor Q7 from OFF to ON, and the bias applied through this Q7 brings the transistor into an unsaturated state as described above. Transistor Q5, which was located in When Q5 becomes saturated like this,
Since a sufficient bias current is applied to the base of the transistor Q6 via Q5, the transistor Q6, which was in the unsaturated state as described above, also becomes saturated at the same time, and at this time, the voltage applied to the DC motor M increases, causing its rotation. Increase speed. However, as is clear from the above, this rotational speed returns to a constant speed state when the remote control signal is stopped. When the rotation speed of the DC motor M increases in this way, since the receiving tape T-2 is being rewound as described above, the rewound speed only increases and there is no problem with other operations. .
It should be noted that this circuit is different from the present invention and will be described later. As described above, when the receiving tape is rewound and reaches the starting point, the conductor foil P-2 attached to the starting point short-circuits the electrode CP-2 and conducts the relay D.

At this step, contacts d-1 and d-2 of relay D are switched to the make side. That is, the relay D is self-held by the contact d-1,
The rewinding plunger SDR is restored by the contact d-2, and the normal feeding plunger SD2 is energized, so that the receiving tape T-2 is automatically changed from rewinding to normal feeding. In this step), it is possible to remotely listen to an incoming message from a third party recorded on the receiving tape T-2, but the details thereof are omitted because they are not directly related to the present invention. Next, in order to cancel the above-mentioned remote control, a second remote control signal is sent.

Then, as is clear from the above, the output of Schmitt circuit 1 resets flip-flop circuit 2, which restores relay C, and its contact c-1 also restores relay D, allowing normal feeding of the receiving tape. The response tape T-1 stops, and since the plunger SDI is opened, the response tape T-1, which had been stopped midway as described above, resumes running. This) stops the second remote control signal.
Thereafter, as mentioned above, once the response tape T-1 has made one revolution, the recording state is switched to the reception tape T-2, and after a predetermined period of time, the state is restored to the standby state. Next, unlike the above, the user made a mistake in the operation and sent the remote control signal to the receiving tape T-2.
The following describes the case where the signal is sent while the is being driven in the recording state. In addition, in this recording state, relay A and relay B
Two of these are retained. Since it is in the recording state, recording of the remote control signal is immediately started on the receiving tape T-2.
On the other hand, this remote control signal starts accumulating charge in the capacitor C3 as described above, and after about one second, the relay C is energized via the Schmitt circuit 1 and the flip-flop circuit 2. ), contacts c-1, c-2, c-3 of relay C
・C-4 switches to the make side, but since the bias applied to the base side of transistor Q2 is cut off by contact c-1, relay B is restored, and as is clear from the above, the recording state of the receiving tape is changed. is released and rewinding begins in the playback state. Therefore, the remote control signal is recorded on the receiving tape for about 1 second at normal speed.
As mentioned above, in the playback state after the receiving tape is switched from rewinding to normal forwarding, this recorded remote control signal is transmitted through the amplifier circuit A-2 in the same way as the incoming message from the third party. Tertiary winding T of line transformer LT
H, and is transferred to the secondary winding SEC as well as the primary winding PR, so it is amplified by the amplifier circuit A-3 via the resistor R3, and starts charging the capacitors C3 and C4 as described above. First, after about 0.2 seconds, the capacitor C5 is charged to a predetermined charge, and the input terminal 1 of the AND circuit 4 is set to "H".
”. On the other hand, since input terminal 2 has already been pulled up to "H" by contact c-2 of relay C,
Then, the output terminal 3 becomes "H" and turns on the transistor Q7. As mentioned above, when Q7 is turned on, the rotational speed of the DC motor M increases. This) is the receiving tape T.
-2 is fast forward. However, when fast forwarding, the playback frequency of the recorded remote control signal increases, so it does not appear on the output side of Microfork F, and capacitor C3,
Charging of C5 is stopped. However, in the embodiment, the discharge of the capacitor is about 0. Since the current seconds are required, the above mentioned fast forwarding ends up being approximately 0. a Continue to restore normal feeding. Therefore, the remote control signal that was recorded for about one second will not be completely overplayed by the above-mentioned fast forwarding. if,
If such a fast-forward circuit does not exist, the regenerated remote control signal charges the capacitor C3 to a predetermined potential, resets the flip-flop circuit 2 as described above, and restores the relay C. Since listening is canceled, you will no longer be able to listen to any recorded incoming messages from third parties.
This is because, in the above example, the position where the remote control signal was recorded was also the last position of the incoming message from the third party, but in reality, the receiving tape T-2 was recorded many times. It is unknown where the remote control signal is recorded for use, for example, if a remote control signal that was incorrectly recorded last time is played, it will automatically stop, and the incoming message recorded from the next time onwards will be automatically stopped. This is because you will not be able to hear it unless you go home and manually operate it. Note that in order to cancel remote listening, the owner must perform remote control as described above. In this embodiment, when an unnecessary remote control signal is played back via the electronic governor 3, the receiving tape is fast-forwarded, but this is not limited to electronic governors. Needless to say, a short circuit may be used, or the speed may be reduced by known means instead of the high speed.

As described above, the present application provides that even if remote control of an answering machine is performed while the receiving tape is being driven, instead of being performed while the answering tape is running, the above-mentioned transfer recording is performed during playback during remote control. When the signal is played back, the tape speed changes immediately, which causes a change in the frequency generated on the tape, thereby preventing the internal remote control circuit from operating. It can be said that it provides a novel method compared to seed prevention devices.

[Brief explanation of drawings]

The figure is a circuit diagram showing one embodiment of the present invention.

Claims (1)

[Claims] 1. In response to an incoming telephone call, after sending out the response terms from the answering tape T-1, the customer's voice is recorded on the receiving tape T-2,
A remote listening answering machine, which is operated by a user from a remote location using a remote control signal of a predetermined frequency while the answering tape is running to reproduce and listen to the receiving tape, is configured such that the remote control signal is transmitted for a predetermined period of time or longer. a relay circuit which sets and resets a flip-flop circuit each time the flip-flop circuit is operated or restored by its output; means for rewinding and reproducing the reception tape T-2 by the operation of the relay circuit; a motor speed control means that immediately operates to change the motor speed in response to an input remote control signal; In the erroneously recorded section, even if this is played back, the motor speed control means is operated to run the receiving tape T-2 at a speed different from the normal speed before resetting the flip-flop circuit. a means for maintaining the flip-flop circuit in a set state by reproducing a frequency different from a predetermined frequency of the remote control signal; An answering machine with remote listening installation, characterized by comprising means for resetting the flip-flop circuit and canceling the remote listening state by means of a remote control signal from the outside that continues even if the motor speed control means is instantaneously activated. .