JPH036058Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a modification of Japanese Patent Application No. 18672/1984 (Japanese Patent Publication No. 5162/1983) filed by the same applicant. The above patent was already filed about 10 years ago and there are some points that are not suitable for the current situation, so this time we will modify it and apply for a utility model with a different scope of claims. It is.

The detailed structure and operation of the embodiments of the present application will be explained below.

In the figure, TEL-1 is the telephone of the unspecified number of people who are calling, TEL-2 is the incoming telephone of this device connected to the central office line-1, and TEL-4 is the telephone of the central office line-2. It is convenient to use a push-phone, which is a phone connected to the device for making outgoing calls and can be used for speed dialing. Further, TEL-3 is the nearest telephone for the person carrying a pager. Also, EX−, EX
- is an exchange, and LT-1 and LT-2 are line transformers for connecting this device and the central office line. Circuit A surrounded by a dotted line is an auto-dial means for calling a pager or forwarding destination telephone via exchange FX- when a call is received from TEL-1.The details are as follows. , 2 is a first ringing signal detection circuit for detecting a ringing signal, IC-7 is a flip-flop circuit set by the output of 2 above, and 3 is a loop on the TEL-4 side for calling a pager. In this embodiment, a PLL is used in the dial tone detection circuit. Further, 4 is an approximately 1Hz clock oscillation circuit that oscillates by the output of 3 above, IC-8 is a shift register that is shifted by the output of 4 above,
5, 6, and 7 are audible signal generation circuits for speed dialing that are oscillated by the output of the above IC-8;
The first reset circuit 9 resets the TEL-4 through the IC-7 about 10 seconds after calling the exchange EX- to call the pager.
a second reset circuit for releasing the side loop;
Further, Y-2 is a relay held by the output of the IC-7 and has a contact y2-1.

Next, the area surrounded by dotted line B detects the polarity reversal when the person carrying the pager picks up the calling signal or the handset of the transfer destination phone.
-3 and TEL-1 are in a communication state,
Of these, 10 are the second ringing signal detection circuit, 12 are the polarity reversal detection circuits, and IC-9 is set by receiving the output of the second ringing signal detection circuit or the polarity reversal detection circuit 12 via the changeover switch SW-4. Flip-flop Y-3 is a relay held by the output of IC-9, and contacts y3-1, y3-
It has 2. Also, transistor Q4 is TEL
This is a recovery circuit that detects the pulse from the line that occurs when TEL-1 or TEL-3 hangs up and resets the IC-9.

Next, the part C surrounded by another dotted line illustrates the main control circuit of the answering machine,
Among them, T-1 is an endless response tape,
M1 is a motor for driving the T-1, T-2 is a receiving tape such as a cassette, and M2 is a motor for driving the T-2. Furthermore, P-1 attached to the end point of T-1 is a conductive foil, and CP-1 is an electrode for detecting P-1. Also IC-1, IC-
3. IC-5 is a flip-flop circuit, IC-2 is an inverter, and IC-6 is a NAND gate. Further, the transistor Q1TEL-1 side is a recovery circuit for detecting the pulse when the telephone is hung up and restoring the answering machine, and the transistors Q2 and Q3 are for driving the above-mentioned motor.
SW-1 is also a switch that can be switched to the 1WAY side to function as an answer-only machine, and when switched to the 2WAY side to record a message from the caller after answering. Also, when SW-2 is switched to the call recording side,
This is a switch that allows you to record the content of calls between TEL-1 and TEL-4. Next, with SW-3
SW-4 is a selection switch between a circuit that calls a pager and a circuit that directly calls TEL-3, and functions as described below. The present application is constituted by each of the circuits as described above.

Next, the effect of the present application will be specifically described. First, TEL
Assume that there is an incoming call from TEL-1 to TEL-2. The ringing signal is detected by the first ringing signal detection circuit 2, and its output sets two flip-flops, IC-1 and IC-7. Here IC-1
When the terminal becomes 1, the relay Y-1 is held in the operating state, and a loop is formed by the contact y1-1 via the line transformer LT-1, so that the ringing signal stops. At the same time, the Q terminal of IC-1 goes high.
Then, the flip-flop IC-3 is set via the capacitor C1, so its terminal becomes L and turns on the transistor Q2 via the resistor R5, which energizes the motor M1 and drives the response tape in the direction of the arrow. , T-1 in advance are sent to the TEL-1 side via the above-mentioned IT-1 by a reproducing circuit (not shown). When one IC-7 is set and its terminal becomes 1, relay Y-2 is held in the operating state, so the contact y2-1 closes the TEL-4 side, so the dial tone is set to the exchange EX. −
It is sent from. This dial tone is first
When the Q terminal of IC-7 becomes H, the signal is input to the dial tone detection circuit 3, which is set to the operating state, via the line transformer IT-2 and the capacitor C5. Here, by switching the output level of the dial tone detection circuit 3, a clock of about 1 Hz composed of, for example, a multivibrator is activated, and its oscillation output is transmitted to the shift register IC-8.
When the output terminal OP1 becomes H due to the first clock, the first audible signal generating circuit 5 generates a signal corresponding to the first digit number of the speed dial. This signal is connected to capacitor C
2. Exchange FX- via line transformer LT-2
sent to. Next, by the second shot of Clock 4
Only the terminal OP2 of the IC-8 becomes H, and the second audible signal generating circuit 6 sends out the second digit speed dial number. Thereafter, when the third digit dial number is sent in the same manner, it is sent to the IC via the first reset circuit 8.
-8, and the sending of the series of speed dial numbers ends. The above-mentioned short dial number generation circuit is already commercially available as an LSI from General Instrument (GI) and other companies, and is a well-known means. When the speed dial is sent out as described above, in the case of a pager call, a message indicating that the pager is ringing will be returned from the central office shortly, but after about 10 seconds, the output of the second reset circuit 9 becomes H. The flip-flop IC-7 is reset via the switch SW3 which is switched to the pager side. As a result, the above-mentioned relay Y-2 is restored, so the contact y2-
1 is opened, and the closed state on the TEL-4 side is opened.
However, in EX-, the pager keeps calling.

Now, since the above response term usually ends in about 20 seconds, the person carrying a pager usually calls the nearest phone number.
Before calling TEL-4 from TEL-3, the sending of the response term to TEL-1 has been completed. As mentioned above, when the changeover switch SW-1 is on the 1WAY side, the answering machine section C works as a dedicated answering machine. Therefore T-
When the foil P-1 comes into contact with the electrode CP-1 after one rotation of the foil P-1, the IC-3 is reset via the inverter IC-4 and the running motor M1 of the T-1 is stopped. However, in this case, the flip-flop IC-5 is not set by SW-1, so the receiving tape T-2 is not driven, and the caller waits until the person carrying the pager answers the phone after hearing the response terms. I will do it.

On the other hand, changeover switches SW-1 and SW-2
When it is switched to the 2WAY side, flip-flop IC-5 is set at the end of one cycle of T-1 mentioned above, and its terminal Q becomes H, so the NAND
The IC-6 is H, and the IC-6 is H by switch SW-2 which is switched to the caller's message recording side, so the IC-6 is I and the resistor R.
Transistor Q3 is turned on via 7 and energizes motor M2, thereby driving the receiving tape T-2, and the caller records the necessary information on T-2 while waiting, thereby saving time. It can be omitted.

On the other hand, selector switch SW-1 is on the 2WAY side,
When SW-2 is on the call recording side, when the person carrying the pager calls TEL-4 from TEL-3 and the call is closed, the receiving tape T-2 is driven.
The contents of the conversation between TEL-1 and TEL-3 are recorded on T-2. To explain this in detail, TEL-3
When TEL-4 is called from the terminal, the calling signal is detected by the second calling signal detection circuit 10, the flip-flop IC-9 is set by its output, and the relay Y-3 is held in the operating state by its terminal. Therefore, the contact y3-1 allows TEL-
3. A closed state is formed between TEL-4, and line transformers LT-2 and LT are connected by contact y3-2.
-1, a communication circuit between TEL-3 and TEL-1 is formed. At the same time, since the Q of the above IC-9 is set to H, the above IC-6 is set to H through SW-2 for the first time, and since the IC-6 is already set to H, the I of IC-6 is set to H. Since the receiving tape T-2 is then driven as described above, the contents of the mutual conversation can be recorded on T-2.

Next, the recovery operation of this device will be described.

No matter which side of TEL-1 or TEL-3 hangs up first, the high level pulse when hanging up the line and line transformer TI-1 or IT-2,
Transistor Q4 is momentarily turned on via resistor R8. At this point, since the above IC-9 is reset via the inverter IC-10, the relay Y-
3 is restored, the loop on the TEL-4 side is opened by the contact y3-1, and the transistor Q1 is also instantaneously turned on by the above pulse, and the flip-flop IC is connected via the inverter IC-2.
-1, IC-5 is reset, so IC-1 restores relay Y-1, opens the loop on TEL-2 side, and IC-5 causes T-2's running motor M
2, and the device is now completely restored to the standby state.

Next, switch the aforementioned changeover switches SW-3 and SW-4.
The effect when is placed in the opposite position (transfer) to that shown in the figure will be described. This position is for directly calling TEL-3 when an incoming call is received on the TEL-2 side, instead of calling the pager as described above. To do so, please send TEL-3 to the storage device below IC-8 in advance.
It is assumed that the speed dial number corresponding to the number is memorized. So now, from TEL-1
TEL-2 receives a call and T-1 sends a response term.
While sending to TEL-1, contact y2
-1 creates a closed circuit for TEL-4, ie, office line-2, and sends abbreviated dial information for TEL-3. When TEL-3 receives an incoming call and picks up the handset, the polarity reversal detection circuit 12 shown in the figure is activated, which causes the set terminal S of IC-9 to become H, and relay Y
-3 operates and holds relay Y-3 in operation. Therefore, the contact y3-2, line transformer
TEL-1, TEL-3 via LT-1, LT-2
A communication circuit is formed between them, allowing them to communicate with each other. When the device is restored, relays Y-3 and Y-2 are restored at the same time by a restoration circuit consisting of transistor Q4. This is because SW-3 has been switched so that relay Y-2 has no relation to second reset circuit 9 at this time.

As described above, the present application adds practically convenient functions to the earlier application, and its circuit also uses logic circuits to improve the overall function and reduce the production cost. Therefore, it can be said that the practical effects of this type of device have been increased.

[Brief explanation of the drawing]

The figure is a circuit diagram showing the main parts of an embodiment of the present invention.

Claims (1)

[Scope of claim for utility model registration] Telephone answering machine that operates by detecting incoming calls from the receiving party's office line, telephone originating party's office line, and telephone receiving party's office line, and detecting incoming calls from the telephone receiving party's office line. A telephone auxiliary device having an auto-dial means for automatically dialing the calling party's office line by closing the calling party's office line, which includes a ringing signal detection circuit that detects an incoming call from the telephone originating party's office line or detecting polarity reversal of the telephone calling party's office line. Either signal from the polarity reversal detection circuit is
A central office line connecting means is provided which detects the telephone number via a changeover switch and connects both the receiving and calling party's telephone lines to establish a telephone call state, and the automatic dialing means has a second switch which selects between a pager call and a telephone transfer. With the switch,
When the second changeover switch is switched to the pager calling side, a reset circuit is provided that disconnects the caller's office line after the auto-dial is completed, and the answering machine is provided with a reset circuit that sends out only a response message. a third changeover switch for switching between position 1 and a second position in which a message is recorded after sending a response term; and a message recording means when the third switch is switched to the second position by a response term sending end signal; A fourth changeover switch is provided for selecting whether to drive the message recording means or to drive the message recording means by a signal when the office line is connected by the office line connecting means, and the fourth changeover switch selects whether to drive the message recording means by the signal when the office line is connected by the office line connecting means, A telephone accessory device characterized by having a recovery means for detecting the termination of a call between lines and restoring the device.