JPS623553A - Automatic answering telephone set - Google Patents

Abstract

PURPOSE:To facilitate the operation by allowing a user of an automatic answering telephone set to send a prescribed dial signal from a tone dial type or a pulse dial type telephone set at the visiting place so as to control remotely the automatic answering telephone set. CONSTITUTION:When a telephone set 1 is of tone dial type, while a message recorded on a reply tape T1 is sent to the telephone set 1, a dial, e.g, '3' of the telephone set is operated. Then a tone dial signal representing dial '3' generated from the telephone set 1 is 3-shot pulse signal in this case, where a DC is intermitted corresponding to the dial number. A leading voltage of the pulse is compared by a compatator 21 and detected. Then the pulse width is expanded by a pulse generator 22 consisting of a one-shot multivibrator and the result is inputted to a microcomputer CPU. Thus, the remote control reproduction for the reception message by the tone dial signal is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an answering machine that can be operated remotely using either a tone or pulse dial telephone dial signal as a remote control signal.

[Technical background of the invention] Conventional layer i,! The answering machine, in which the machine I itself was used as a remote control transmitter, was constructed as shown in Figure 3.

That is, a pulse dial type pushbutton telephone 1
When a call arrives via telephone line 2, terminal 3a
A bell signal appears between and 3b.

This bell signal is detected by a bell signal detection circuit 4, and the detection signal is provided to a system control microcomputer (hereinafter referred to as microcomputer) CPU. As a result, the microcomputer CPU counts the detection signal a preset number of times. Therefore, the microcomputer CPU outputs an output that turns on the transistor Q, thereby turning on the relay 5. Therefore, the relay contact 5a of the relay 5 is closed and the telephone line 2 and answering machine (hereinafter referred to as TA) are connected.
(referred to as M). Thereafter, the microcomputer CPU drives the response tape T1 on which a response message has been recorded in advance, and turns on the switches S1, S2, and S6. As a result, the response message recorded on the response tape T1 is transmitted from the playback head 6 to switch S1 → switch S6 → preamplifier 7 → buffer I7 and switch S2.
-> band 14111 limited filter 9 -> line amplifier 10 Then, the signal is sent to the telephone line 2 via the line 1 Herance LT, respectively. When the response message is finished, the response tape T
When the marker signal 1 is detected, the microcomputer CPU stops driving the response tape T+. Also, the microcomputer CPU has switch S+ that was on until now.

Turn off S2, S6 and switch $3, S
, , Ss is turned on and the received message is controlled to be recorded.

That is, a message for reception is introduced from the caller's telephone 1 and is applied through the telephone line 2 to the primary side of the line transformer LT. Then, the reception message is recorded on the reception tape T2 from the recording head 11 via the secondary side of the line transformer LT, switch S3, preamplifier, buffer amplifier 8, switch $5, switch S4.

Then, when the telephone 1 is hooked on to the ringing tone, the microcomputer CPU reads the change in level that occurs at this time, stops the running of the receiving tape T2, and prepares for the next incoming call.

By the way, the signal emitted when each button of the telephone 1 is operated is a superposition of two different frequencies for one push button, as shown in the following table. For example, dial number "1"
”, 697 Hz and 12091! The superimposed frequency of z is transmitted to the telephone line 2. Therefore, the response tape T
When the dial number of telephone 1 is operated to "1" and "3" while the message recorded in 1 is being sent, the microcomputer CP
The program is programmed so that U stops the response tape T1 and rewinds and reproduces the reception tape T2.

(Left below) In other words, while the response message is being sent, the dial fiJ of the pulse-dial button telephone 1 outside the home,
When you operate r3J, first dial "1" 697+1
Z and 1209 H2 1st frequency is line transformer LT
appears on the secondary side of the bandpass filters 13 to 15.
is input. Here, the bandpass filter 13 is G9
711z, the bandpass filter 14 is +2
09 Hz is passed. Then, P that entered these
L L 16. The output of 17 is from H level to L level respectively.
level, and the output of OR circuit G1 is L level,
This is input to the input port of the microcomputer CPU. In addition, the band pass filter 15 that passes 1447 Hz has no output, and the output of P'LL18 maintains the 1'' level, and the output from the OR circuit G2 that inputs the L level of PLL 17 and the )'' level of PLL 18 becomes H level. , this is input to the input port of the microcomputer CPU.

Next, dial "3" 697 Hz and 1477 H
The 5-fold frequency of z is input to each bandpass filter 13-15. Here, the bandpass filters 13.15 pass 697 fiz and 1477 Hz, respectively, so that the output of the PLL 16.18 changes from the "]" level to the L level. Therefore, the OR circuits Gl and G2 output H level, which is input to the input ports of the microcomputer CPU, respectively.

Here, ○R circuit G+, G2 is Ll)'' to T1, H
When a signal is output, in other words, when the button buttons "1" and "3" are operated, the microcomputer CPU causes the TAM to stop the response tape T1 and start the reception tape T2. Since the message is programmed to be rewound and played back, the message recorded on the receiving tape 2 can be listened to using the telephone 1.

Similarly, in order to set another operating state, for example, the microcomputer CPU may be programmed when the button "1" is operated after the button "3".

[Problems in the Background Art] However, conventional answering machines cannot be applied to tone dial telephones other than pulse dial telephones, and tone dial telephones still require the use of a remote control device. .

[Purpose of the Invention] The present invention eliminates the above-mentioned problems, and allows an answering machine to be operated by remote control from either a pulse or tone dial telephone by dialing signals from the telephone body.

[Summary of the Invention: The answering machine of the present invention automatically closes the telephone line in response to the arrival of a bell signal, sends the response message recorded in the response message recording means as a dial tone, and then makes a call. After recording the message from the sound in the receiving message recording means, the answering machine is released from the lock and placed in a standby state, and the user of the answering machine goes out while the answering message is being sent. The answering machine can be operated by remote control by transmitting a predetermined dial signal from either a tone dial type or a pulse dial type telephone.

[Embodiment of the Invention] An embodiment of the present invention will be described in detail below with reference to the drawings. Note that the same parts as in the prior art are given the same reference numerals and their explanations will be omitted.

That is, the remote control operation in the case where the telephone 1 is of the tone dial type will be explained.

Response day! While the message recorded in T1 is being sent to telephone 1, for example, the dial dial "3-" of the telephone is operated.In other words, the tone dial signal of dial "3" generated from telephone charge 1 is transmitted by direct current. In this case, three pulse signals are made in succession corresponding to the A full number. by the way,
20PPS and 10PPS for tone dial phones
Either of these waveforms appears on the secondary side of the lined lance. Then, by passing this signal through the waveform shaping circuit 2o, unnecessary pulse components are removed and only necessary pulse components are extracted.

The rising voltage of the pulse is measured by the comparator 21.
Compare and detect. Comparing this with the rising edge of the pulse, the output pulse of the comparator 21 is extremely short. That is, the waveforms shown in FIGS. 2(a) and 2(b) are pulses obtained as the output of the comparator 21 by operating the dial r3J of a 20 PPS and 10 PPS type telephone, respectively. Since this pulse causes the microcomputer CPU to malfunction, the pulse generator 22, which is configured with a one-shot multi-pulse, stretches the pulse width and inputs it to the microcomputer CPU. The waveform in Figure 2 (C) is 2
The waveform in (d) shows the output of the pulse generator 22 when using a 0 PPS telephone, and the waveform in (d) shows the output of the pulse generator 22 at 10 PPS.

The output waveforms shown in Fig. 2 (C) and (d) are input to the microcomputer CPU and have a pulse width T.
The microcomputer CP (J counts the pulse from the telephone) as an input. Therefore, when three 1-- dial signals from the telephone 1 are input to the microcomputer CPU while a response message is being sent via the telephone line 2, the microcomputer CPU receives the pulse. The microcomputer CPU is programmed to take up the tape T2 and control Ll to put it in the playback state.This enables reception by tone dial signal (remote control playback of busy messages).

In addition to playing the reception tape T2, for example, by operating the dial "2", the response tape T'
Microcomputer CPU for writing response messages etc.
This is possible by programming.

Further, the operation mode may be set by combining a plurality of dial numbers, and in this case, eavesdropping can be prevented.

Therefore, in this embodiment, the TAM can be operated by remote control on a telephone using a pulse dial signal and remote control using a telephone using a tone dial signal.

[Effects of the Invention] As described above, according to the answering machine of the present invention, it is possible to use either a pulse dial signal using a push button type or a tone dial signal using a rotary type or a push button type, without using a separate remote controller. Since the remote control can be operated simply by operating a predetermined dial number on the main body, it is extremely advantageous in terms of operation and handling.

[Brief explanation of drawings]

Fig. 1 is a circuit diagram showing one embodiment of the present invention, and Fig. 2 is a circuit diagram showing an embodiment of the present invention.
The output waveform diagram in the figure and FIG. 3 are conventional circuit diagrams. T1...Response tape T2...
......Receiving tape 20...
...Waveform shaping circuit 21...Comparator 22...Pulse generator Fig. 1

Claims (1)

[Claims] Automatically closes the telephone line in response to the arrival of a bell signal,
An answering machine configured to transmit a response message recorded in a response message recording means to a caller, record a message from the caller in a reception message recorder, and then release the connection and enter a standby state. In contrast, while the response message is being sent, the user of the answering machine can remote control the answering machine by transmitting a predetermined dialing signal from either a tone dial or pulse dial telephone outside the home. answering machine.