JPS61288545A - Automatic response device for telephone set - Google Patents

Abstract

PURPOSE:To facilitate the selection of a message from a desired caller and to attain effective prevention of leakage of secrecy by using an identification code so as to record and reproduce a reply message and a message to a specific caller in a telephone automatic response system using an IC memory as a recording medium. CONSTITUTION:After an identification code is set while numeric keys 0-9 of an operation section 12 are operated and when a reproduction key is operated, a microcomputer 11 stores tentatively a set identification code in an internal buffer memory so as to retrieve a code coincident with the identification code stored in the buffer memory among plural identification codes stored in the index area of an IC memory 13. A start address and a stop address stored in the index area of the IC memory 13 are read together with the retrieved identification code and the result is preset in an address counter. Then the data is read from the preset start address.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an automatic telephone answering device, and in particular, an I/O system that transmits a response message to a caller and a message message from the caller.
This invention relates to an improvement in a C (integrated circuit) memory.

[Technical background of the invention and its problems]

As is well known, automatic answering devices, so-called answering machines, have become widely used in telephone communication systems, and in recent years, automatic answering devices with various functions have also been developed. It's coming.

In other words, the basic answering operation of this type of device is to first detect the arrival of a ringing signal from the calling party (incoming call), and then play back a tape with a pre-recorded response message. and sends the response message to the caller. After the response message has been sent, a recording tape is driven to record the caller's message on the tape for a predetermined period of time, and when the bell ringing is finished, the telephone line automatically returns to its original standby state. It was designed to let you do so.

By the way, the conventional automatic response equipment that uses tape to record and play back messages and messages as described above requires a mechanism to drive the tape, and is inevitably large and heavy. In addition, it has various problems, such as the need for maintenance work on moving parts, failures and noise caused by wear, and time delays in operation due to tape running. As a result, the movements tend to be uncertain and it is difficult to make precise movements.
There are limits to the development of an automatic response system that can adequately meet the needs of users.

Therefore, recently, it has been considered to use IC (integrated circuit) memory as a recording medium instead of tape to record response messages and messages from callers. In other words, this type of system converts a response message into digitized data and stores it in an IC memory, reads the digitized data from the IC memory when a call arrives, converts it to the original analog signal, and sends it to the caller. do. The message from the caller is then converted into digital data and stored in the IC memory, which is later read out by the user and converted into the original analog signal.

As mentioned above, the advantage of using IC memory as a recording medium is that it has no mechanically moving parts and can be constructed entirely from electric circuits, so it is small and lightweight, highly reliable in operation, and has no effect on time delays. Because it allows for flexible design without being overly complicated, it has elements that can be developed to fully meet the needs of users.

However, automatic response devices using IC memory are still in the development stage, and despite the various advantages mentioned above, the current situation is that no fully practical application of them has been developed. Further development is strongly desired, not only in terms of structure and operation, but also in terms of storage capacity for response messages and messages from callers.

[Purpose of the invention]

This invention was made based on the above circumstances, and is an automatic telephone answering system using an IC memory as a recording medium.
In addition to recording and playing back messages for unspecified callers, it is also possible to record and play back messages for specific callers by using an identification code. An object of the present invention is to provide an extremely good automatic telephone answering device that facilitates the selection of messages from users and is effective in preventing leakage of secrets.

[Summary of the invention]

That is, the automatic telephone answering device according to the present invention includes an operation section that includes a recording operation element, a code setting operation element, and a playback operation element, and digitally outputs a response message to a caller based on the operation of this operation element. a first storage means for converting the converted data into data and selectively storing it in a first storage area for unspecified callers and a first storage area for specific callers of the memory; The digitized data stored in the storage area for unspecified callers is reproduced and sent to the calling party, and the first specified code of the memory is received in a state where the specific code sent by the calling party is received. a sending means for reproducing digitized data stored in a calling party storage area and sending it to the calling party; and a message message from the calling party which is digitized when the sending means has finished sending a response message. and storing it in a second storage area for unspecified calling parties in the memory, and converting the message from the calling party into digitized data while the specific code sent by the calling party is received. and a second storage means for storing in a second specific caller storage area of the memory;
Based on the operation of the operation unit, the first and second
and reproduction means for reproducing the digitized data stored in the storage area for unspecified callers and the first and second storage areas for specified callers. In addition to recording and reproducing response messages and recorded messages for specific callers, it is also possible to record and reproduce response messages and recorded messages for a specific caller using a specific (@-specific) code. This makes it easier to select candidates and is effective in preventing leakage of secrets.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. Note that unless otherwise specified, the automatic telephone answering device of the embodiments described below operates by receiving power from a power supply circuit (not shown), and the automatic telephone answering device of the embodiment described below operates by receiving power from a power supply circuit (not shown). The IC memory that stores messages and messages from callers is equipped with a backup battery (not shown) so that the data can be retained even in the event of a power outage.

First, the operation of recording a response message to the caller in the IC memory will be explained. In this case, the caller is an unspecified caller. That is, when the power supply circuit is driven, the microcomputer 11 is initialized and enters a state of waiting for an interrupt (HALT). Then, the user can use the operating section 12 for recording, the details of which will be described later.
When * is operated, the microcomputer 11 accepts an interrupt, and the IC memory 13 specified by this interrupt is
A start address (address at which writing of audio data starts, for example 400 (hexadecimal)) is written to the address (for example, address 0 (hexadecimal)). In the IC memory 13, audio data is written from address 400 (hexadecimal), and the above start address, stop address, identification code, etc. described later are written from addresses 0 to 3FF (hexadecimal). It is used as an index area.

Then, the response message supplied to the microphone 14 is amplified by the necessary amount in the recording amplifier circuit 15, and then
The wave circuit 16 removes components outside the required band, thereby preventing aliasing noise and the like. Thereafter, the response message is converted into digitized data by the delta modulation/demodulation circuit 17, and the 400 (1
They are written sequentially starting from the hexadecimal (hex) address.

Here, if the response message exceeds the storage capacity of the IC memory 13, the microcomputer 11 controls to sequentially switch to other IC memories 18 to 20 and continue writing. In this case, the microcomputer 11 is configured to be able to specify the addresses of each IC memory 13.18-20 using consecutive numerical values. For example, if the final address of the first IC memory 13 is rn (hexadecimal), then the next IC memory 18
The first address is specified by "n+1 (hexadecimal)". Therefore, each I in the microcomputer 11
As the count value of an address counter (not shown) that generates a numerical value for specifying the address of C memory 13.18 to 20 increases, it automatically switches to the next IC memory 18 to 2°0. is to be carried out.

When the response message is finished, the user operates the stop key 0 of the operation section 12.

Then, the microcomputer 11 holds the value of the address counter when the stop key 0 was operated, and stores the count value in the index area of the IC memory 13 as a strike address. A start address, which is the storage start address of the response message, and a start address, which is the storage end address, are stored in the index area, and the response message to an unspecified caller is recorded here. .

At this time, the microcomputer 11 also controls the f-tare refresh counter (
All pulse outputs are stopped, except for the supply of shoes (not shown).

In addition, in this embodiment, each IC memory 13°18~
20 is assumed to be a dynamic RAM, and refreshing for data retention is performed by a circuit 71 (not shown) provided in the delta modulation/demodulation circuit 17.

Next, the operation of recording a response message for a specific caller (hereinafter referred to as a specific message) will be described.

First, the user operates the numeric keys θ to 9 as code setting operators on the operation unit 12 to set an identification code for a specific caller. This identification code is, for example, 4
It consists of a combination of digits, etc. Then, this set identification code is transmitted to the microcomputer 11.
The data is read in as binary data and temporarily stored in an internal buffer memory (not shown).

In this state, when the user operates the recording key * of the operation unit 12, the microcomputer 11 transfers the identification code stored in the buffer memory and the start address for recording the specific message to the IC memory. 13 index area. In this case, the above-mentioned start address is automatically set to the address next to the above-mentioned start address (held in the above-mentioned address counter) of the response message to the unspecified caller. .

Here, when a specific message is supplied to the microphone 14, this specific message is converted into digitized data in the same way as described above, and is sequentially written into the XC memories 13.18-20 from the above-mentioned start address. In this case, depending on the length of the specific message, the IC memories I J and I
Switching between II and 20 is performed in the same manner as described above.

When the specific message ends, the user operates the stop key 0 of the operation section 12.

Then, as described above, the strike address at this time is stored in the index area of the IC memory 13.

In other words, the identification code for a specific caller and the start address and start address of a specific message are stored in the index area, and the specific message is recorded here.

If there is more than one specific caller, the process repeats the operation of setting the identification code again and recording the specific message after the previous specific message has been recorded and the stop key O is operated. This is to make it return to normal. in this case,
The number of specific messages is stored in the index area of the IC memory 13 or in the IC memory 13. This is possible until any one of the storage capacities Ill to 20 becomes full.

Next, as above, XC memo I) 13.18-20
The operation of listening to the response message and specific message recorded in the message will be explained. First, listening of a response message to an unspecified caller will be explained. That is,
When the user operates the regeneration keyer of the operation section 12,
The microcomputer 11 reads a start address to which no identification code is assigned and a stop address stored following the start address from the index area of the IC memory 13, and presets these in the address counter. Then, the microcomputer 11 operates to sequentially read data stored in the IC memories 13, 18 to 20 from the preset start address until reaching the stop address.

This read data is transmitted to the delta modulation/demodulation circuit 17.
supplied to Then, the delta modulation/demodulation circuit 17
IC memory 13. The data is converted into an analog signal based on a clock pulse output from the microcomputer 11 in synchronization with the timing of reading data from the microcomputer 11. The analog signal output from the delta modulation/demodulation circuit 17 is smoothed by a band F-wave circuit 21, amplified by a reproduction amplifier circuit 22, and then reproduced by a speaker 24 via a changeover switch 23, where it is responded to. This is a preview of the message.

In this case, the changeover switch 23 is set to the playback key φ.
Switching is controlled in conjunction with the operation of the keyer, and when the regeneration keyer is operated, it is switched to the position shown in the figure.

-i, and when the count value of the address counter of the microcomputer 11 matches the preset stop address, the microcomputer 11 starts the count value of the address counter in the same way as when the stop key 0 was operated. The preset value and count value are held, and all pulse outputs except the refresh clock and arm pulse are stopped.

Next, preview listening of a specific message to a specific caller will be explained. First, the user operates the numerical keys θ to 9 of the operation section 12 to set an identification code, and then operates the reproduction key φ. Then, microcomputer 1
1 temporarily stores the set identification code in an internal buffer memory, and selects one that matches the identification code stored in the buffer memory from among the plurality of identification codes stored in the index area of the IC memory 13. search for.

Then, the microcomputer 1 reads out the start address and stop address stored in the index area of the IC memory 13 together with the searched identification code, and presets them in the address counter.

Then, similarly to the above, the microcomputer 11
IC memory 13 from the preset start address
, 18 to 20 are successively read out until the stop address is reached, and this read data is converted into an analog signal and supplied to the speaker 24, where a specific message is previewed. It is something.

Next, the operation of sending a response message and a specific message to a caller will be explained. First, sending a response message to an unspecified caller will be explained. That is, in this case, the standby switch 25 connected to the microcomputer 11 is turned on. Then, the microcomputer 11 enters a state in which it does not accept operations on the number keys 1 to 9 other than the recording key, the stop key 0, and the playback key in the operation section 12, and the changeover switch 23 After switching so that the output of the reproducing amplification path 23 is guided to the line transformer 26, it enters a state of waiting for an input signal from the photocoupler 27.

If you receive a call in this condition, the telephone line 'rl
When a bell signal arrives at , 'r, the telephone line T1*
T! Photocoupler 2 connected via capacitor C to
At the output end of 7, an output signal corresponding to the bell signal is generated. The frequency and repetition period of this bell signal are patterned, for example, in Japan at 16 (Hz), with a repetition of 1 second continuous and 2 second off. 7. By detecting that the output signal from the Oto coupler 27 corresponds to the pattern of the bell signal, it is determined that the bell signal has arrived,
The line switch 28 is turned on.

After that, the microcomputer 11 reads out the start address and stop address to which no identification code is attached from the index area of the IC memory 13, and reads out the start address and the stop address, in the same way as the above-described preview operation of the response message to the unspecified caller. From IC memory 1
The data stored in 3°18 to 20 is sequentially read out until the stock address is reached. This read data is converted into an analog signal by the delta modulation/demodulation circuit 17, and is converted into an analog signal by the band wave circuit 2, the reproduction amplifier circuit 22, the changeover switch 23, and the line transformer 2.
6. Line switch 28 and the telephone line T1yT! A response message is sent to the caller via the caller, and a response message is sent here.

Here, the microcomputer 11 operates to transmit the response message again after a certain period of time after the response message has been transmitted as described above. This operation is performed when the count value of the address counter of the microcomputer 11 matches the stop address when the first response message is sent, and a timer circuit (not shown) provided in the microcomputer 11 is activated. , a certain period of time is counted, and then the microcomputer 11 again reads out the data stored in the IC memories 13.18-20 from the start address until the stop address is reached. Note that even after the second response message has been sent, a certain period of time continues due to the action of the timer circuit.

Here, the reason for sending the response message twice is
This is to ensure message transmission. The reason for waiting a certain period of time after each response message is sent is explained in detail later, but if a specific caller presses or dials a button on his or her telephone to send out his or her identification code. , provides an opportunity to obtain a specific message corresponding to the identification code, and prevents identification code discrimination errors due to mixing of the response message sent to the caller and the identification code sent by the caller. This is to do so.

In this embodiment, there is a 2-second delay after the sending of each response message, and the calling party does not send an identification code even after 2 seconds have passed after sending the second response message. If not, the microcomputer 11 turns off the line switch 28 and is then returned to the state before the call was received.

As a means of giving the caller an opportunity to send an identification code, for example, when the count value of the address counter of the microcomputer 11 matches the stop address while the response message 7 is being sent, Of course, it is also possible to send out a tone or the like to detect the sending of the identification code.

Next, the operation of sending a specific message to a specific caller will be explained. First, a case where the caller's telephone is a push-button type will be described.

In other words, the caller operates the numeric keys on his or her telephone to send out his or her identification code during the state in which a response message is sent to an unspecified caller, or until 2 seconds have elapsed after the message has been sent. . This transmitted identification code is the telephone line 'r! e T2 *It is supplied to the high band finished wave circuit 29 and the low band ν wave circuit 30 via the line switch 28 and line transformer 26, respectively.

These high distortion range F-wave circuit 29 and low-band F-wave circuit 30 are
This is for discriminating the frequency signal (two-liquid mixed signal) generated from the push-button telephone, and the discriminated signals are converted into pulse-like signals by the waveform shaping circuits 31 and 32, respectively, and then sent to the counter circuits 33 and 32. It is supplied to the tart input terminal of 34.

Here, the counter circuits 33 and 34 have f-)
A clock pulse having a pulse width sufficiently shorter than the /4' pulse width of the signal supplied to the input terminal is supplied. This clock pulse is generated from the time when the microcomputer 11 determines that the bell signal has arrived. Then, the counter circuit 33°3
4 is set at the rising edge of the signal supplied to its f-) input terminal, and the clock /4' is set during the H level period of the signal.
The operation of counting pulses, outputting the counted value to the detection circuit 35 and the microcomputer 11 at the falling edge of the signal supplied to the dart input terminal, and resetting it is repeated.

Here, the detection circuit 35 functions to discriminate between a response message and an identification code when an identification code is sent from the caller while the response message is being sent to the caller. That is, this detection circuit 35 detects a frequency signal (hereinafter referred to as a dial signal) sent out when a caller operates each numeric key of the telephone.
A response message and a dial signal are determined based on whether or not the count value outputted from the counter circuits 33 and 34 matches the reference value. It is something.

Here, it has been revealed through experiments that the above-mentioned count value can be regarded as a dial signal if it is equal to or greater than the reference value of about 70 inches.

Then, when the dial signal determines that there is a dirt, the detection circuit 35 outputs a dirt pulse to the Y-T circuit 36.

Then, e-) the circuit 36 is connected to the microcomputer 11
outputs a read signal. Here, when the microcomputer 11 is supplied with the read signal, it accepts the output count value of the counter circuits 33 and 34 as a dial signal from the caller. When this dial signal is accepted four times in this embodiment, the microcomputer 11 determines that an identification code has been sent from the calling party, and converts this dial signal into a format corresponding to the identification code.

Thereafter, the microcomputer 11 temporarily stores the identification code in the internal pack memory, and
Search the index area for one that matches the identification code stored in the buffer memory. Then,
As described above, the microcomputer 11 reads out the start address and stop address stored in the index area of the IC memory 13 together with the searched identification code, and presets them in the address counter. For this reason, the microcomputer 11
reads the data stored in the IC memory 13°18-20 from a preset start address sequentially until reaching the stop address, and this read data is converted into an analog signal by the delta modulation/demodulation circuit 17. Band Toba circuit 21, reproduction amplifier circuit 22, selector switch 23, line transformer 26, line switch 28
and telephone lines TI and T to the calling party, and a specific message is sent to the specific calling party.

Also, during the sending of a response message to the caller, a frequency signal close to or having the same frequency as the dial signal is sent to the telephone line TleT! If the frequency signals are mixed, the phases of the frequency signals are different, and the pulse width of the signal supplied to the f-) input terminal of the counter circuits 33 and 34 is not constant, resulting in fluctuations in the output count value. In this case, when the variation in the count value spans the entire period in which the dial signal can be sent and extends to both the high and low frequencies, it is determined that it is a response message, and the detection circuit 35 reads the message to the dart circuit 36. The signal generation is stopped and the count value at this time is invalidated.

Furthermore, in order to improve the discrimination ability between the dial signal and the response message, a single peak filter with a steep characteristic that passes only the frequency of the dial signal corresponding to each numeric key is used in the high and low ranges. One filter is provided for each frequency band, and the caller operates a key to drive the single-peak filter before transmitting the identification code, thereby reducing the chance of mixing the dial signal and the response message. , the reading of data corresponding to the response message from the IC memories 13.18-20 may be stopped while the microcomputer 11 receives the output count value from the counter circuit 33.34.

Here, instead of directly supplying the signals output from the waveform shaping circuits 31 and 32 to the microcomputer 11 as described above, the dial signal is generated by counting clock pulses having a pulse width shorter than the pulse width of the signal. By making this determination, even dial signals with similar frequencies can be discriminated with sufficient reliability, and discrimination errors can be reduced.

Next, a case where the caller's telephone is a dial type will be explained. That is, when the caller sends an identification code using a rotary telephone, the number corresponding to the dialed number is supplied to the primary side of the line transformer 26 via the telephone lines T1+T2 and the line switch 28. .

Then, positive and negative impulses are generated on the secondary side of the line transformer 26, and the impulses are supplied to the waveform shaping circuit 37. This waveform shaping circuit 37 generates a z4 pulse signal corresponding to the dial pulse by using the rising edge bt or falling edge of the inno-9 pulse.

The pulse signal output from the waveform shaping circuit 37 is supplied to another waveform shaping circuit 38. This waveform shaping circuit 38 generates an integral action to remove dial chattering and pulse noise other than dial pulses, and generates a pulse of time approximately equal to the make rate and break rate, and the pulse width and the waveform shaping circuit 37 I? It performs a discriminating action of comparing pulse signals and determining whether or not they are dial pulses.

Here, the Noculus signal output from the waveform shaping circuit 38 is supplied to a counter circuit 39. This counter circuit 39 counts the number of pulse signals output from the waveform shaping circuit 38 and outputs the count value to the microconbeater 11.

The microconbeater 11 determines the dial number from the count value and reproduces the identification code.

The microcomputer 11 then searches the index area of the IC memory 13 for an identification code that matches this reproduced identification code, and thereafter a specific message is sent to the caller in the same manner as described above.

Note that each of the counter circuits 33, 34, and 39 controls the microcontroller 11 when the transmission of a specific message is started or when the period of the dial signal becomes longer than a predetermined time. Next, the operation of recording a message from the caller will be explained. First, recording of a message from an unspecified caller will be explained. That is, after listening to (or while listening to) the response message sent as described above, the caller presses a key predetermined for recording from among the push buttons on his or her telephone (in this example, Operate the key.Then, the dial signal corresponding to the operated key* will be sent to the telephone line T1pT.
2 and the line transformer 26 via the line switch 28
The high-band wave circuit 29, the low-band wave circuit 30, the waveform shaping circuit J1.32, and the counter circuit 33.3
4 and the detection circuit 35 and then supplied to the microcomputer 11.

Here, the microcomputer 11 discriminates the supplied dial signal and is set to the same mode as when recording the response message described above, and the changeover switch 40
is controlled in a position opposite to that shown in the figure, that is, so that the secondary side of the line transformer 2σ and the recording amplifier circuit 15 are connected.

Then, the message message sent from the caller to the telephone lines 'rl and 'r2 is sent to the line switch 28, line transformer 26, recording amplifier circuit 15 and band door wave circuit 16.
The data is converted into digitized data by the delta modulation/demodulation circuit 17, and recorded in the IC memory 13°18-20.

In this case, the memory area in which the message is recorded is controlled by the microcombi 11 so that it starts from the address next to the final address of the data already written. Further, the start address of the message is stored in the index area of the IC memory 13.

While recording such a message, the counter circuits 33, 34, and 39 perform a counting operation based on the message. However, since the count value at this time corresponds to the recorded message,
The signal will not match the reference value stored in the detection circuit 35, and will not be mistaken for a dial signal.

Then, the sending of the message from the caller is completed,
When the caller returns the handset (hereinafter referred to as on-hook), the telephone lines 'ri, 'r are in a no-signal state or a state in which a certain frequency is transmitted. Therefore, each counter circuit 3
The count value of 3, 34.39 must be "0" or a constant value, and when such a state occurs, the microcomputer 11 determines that it is on-hook, and the line switch 28
After turning it off, it returns to the state before the call was received, and
This is where messages are recorded.

At this time, the stop address of the transmitted message is stored in the index area of the IC memory 13 together with the start address.

Further, by repeating the above-described operations, messages from a plurality of unspecified callers can be sequentially recorded. In this case, the start address of each message and the order data indicating the recorded order are stored on the IC.
The information is recorded in an index area of the memory 13.

Next, recording of a message from one particular caller will be explained. First, after listening to (or while listening to) the response message or specific message, the caller operates the number keys on his/her own telephone to send his/her own identification code, and then presses the record key * operate. Then, the dial signal of the numeric key is determined as described above and reproduced by the microcomputer 11 as an identification code.

(-), the microcomputer 1 temporarily stores the identification code in the buffer memory, and stores the identification code in the recording key*.
When the dial signal is received, the start address is written together with the identification code in the index area of the IC memory 13. Thereafter, the specific caller's message sent to the telephone line TITT2 is converted into digitized data as described above. Converted from the above start address to I
Recorded in C memory 1.9, 18-20. and,
When the caller's on-hook state is detected, the stop address at this time is written into the index area of the IC memory 13, and the message of the specific caller is recorded here.

Next, as described above, the IC memories 13, 18 to 20
The operation of reproducing a recorded message from an unspecified caller or a specific caller will be explained. First, the reproduction of a message from an unspecified caller will be explained. That is, in the same way as the preview of the response message described above, the reproduction keyna of the operation section 12 is operated. Then, the changeover switch 23 is switched to the speaker 24 side, as shown by the knob. At this time, the microcomputer 11 reads the start address to which no identification code is assigned and the stop address stored following the start address from the index area of the IC memory 13, and from the start address, the IC memory 13.
The data stored in the address is sequentially read out until the stop address is reached.

This read data is transmitted to the delta modulation/demodulation circuit 17.
is converted into an analog signal by the following band F wave circuit 2
1. The message is reproduced by the speaker 24 via the reproduction amplifier circuit 22 and the changeover switch 23, and a message from an unspecified caller is reproduced here.

If the reproduction key ◆ is operated each time the reproduction of one recorded message is completed, the recorded messages from a plurality of unspecified callers will be reproduced in the order of the order data described above. Further, once the reproduction key ◆ is operated, a desired message can be reproduced simply by setting the order data using the numerical keys O to 9.

Furthermore, if you operate the stop key 〇 while the message message is being played, the value of the address counter of the microcomputer 11 will be held at that point, and if you operate the reproduction key again, data will be read from the held address. It is something that is started.

Next, the reproduction of a message from a specific caller will be explained. That is, similarly to the above-described trial listening of a specific message, after operating the numerical keys θ to 9 of the operation unit 12 to set an identification code, the reproduction keyer is operated. Then, the microcomputer 11 searches for one that matches the set identification code from among the plurality of identification codes stored in the index area of the IC memory 13.

Then, the microcomputer 11 reads out the start address and stop address stored in the index area of the IC memory 13 together with the searched identification code, and reads out the start address and the IC memory IJ'.
, J 8 to 20 are sequentially read out until the stop address is reached.

Thereafter, in the same manner as described above, the read data is converted into an analog signal and reproduced by the speaker 24, thereby reproducing the message from the specific caller.

Here, after the sending of the specific message to the specific calling party is completed, the message message from the specific calling party may be recorded in the storage area of the IC memory 13.18 to 20 where the specific message was recorded. can. In other words, a specific message sent to a specific caller is often no longer needed once the caller has finished listening to the message, so it is necessary to record the caller's message in this specific message storage area. Additionally, multiple pieces of information can be exchanged using the same memory capacity, allowing effective use of memory capacity.

Particularly when short messages are frequently exchanged, a large amount of information can be exchanged with a small capacity IC memory, which is economically advantageous.

Specifically speaking, after listening to a specific message, the specific calling party waits for a predetermined period of time (2 in the example).
By setting the same identification code as the one that selected the specific message, the microcomputer 1 stores the start address and stop address of the specific message in the address counter. to hold. Then, when the specific caller operates the recording key* on his/her telephone and sends a message, the IC memory 13°18~20 between the start address and stop address held in the address counter is recorded. Messages are recorded in the storage area.

Note that reproduction in this case can be performed in the same manner as the preview of the specific message described above.

Next, the automatic telephone answering device described above is connected in parallel to the user's telephone 41 shown in the drawing, and a line changeover switch section 4 is installed at this connection part.
2, the operation section 12 can be connected to the telephone 4.
One operation section 41a can be used for both purposes. That is,
By turning on the switch 42a of the line changeover switch section 42, the switches 42c and 42d are switched to the opposite position as shown in the figure by the power of the built-in battery 42b, and the telephone 41 and the automatic telephone answering device are switched to the telephone line T1. *Completely separated from T2. Also, at this time, the switch 42a
In conjunction with being turned on, the line switch 28 is turned on.

Then, the telephone 41 disconnected from the telephone line T1+T2
is driven by the power of the battery 42b. In addition,
As described above, the automatic telephone answering device itself is driven by power supplied from a power supply circuit (not shown).

Here, when any key on the operating section 41h of the telephone 41 is operated, a dial signal corresponding to that key is sent from the telephone 4. This dial signal is transmitted via a line switch 28 and a line transformer 26 to a high-band wave circuit 29, a low-band P-wave circuit 3θ, and a waveform shaping circuit 31.32.
, the counter circuits 33 and 34 and the detection circuit 35 perform discrimination and are supplied to the microconbeater 11. In addition, when the telephone 41 is a dial type, the dial signal is sent to the waveform shaping circuit 37.3B, the counter circuit 39 and the dart circuit 3.
6, it is supplied to the microcombi and user 11.

That is, the dial signal is determined by the microcomputer 11 regardless of whether the telephone 4 is a push-button type or a dial type.

Therefore, by operating the operating section 41a of the telephone 41, you can record and preview response messages and specific messages for unspecified callers and specific callers, and listen to messages from unspecified callers and specific callers. Each operation such as message reproduction is performed in the same manner as described above.

Next, the micro converter 11 has a driver circuit W#4 connected to the data input/output terminal for the buffer memory.
A digital display 44 is connected via 3.

This display 44 is, for example, a 7-segment Japanese character LE.
The driver circuit 43 has a data latch function and a 7-segment IJ.
It has a D code conversion function.

Here, the identification code used for operations such as recording, previewing, and reproducing the aforementioned specific message, and recording and reproducing a specific message from the caller is set by the user. When the message is sent from the specified caller, it is temporarily stored in the buffer memory within the microcomputer 11. and,
The identification code stored in this buffer memory is used to search for the identification code from the index area of the IC memory 13 when the recording key or the reproducing keyer is operated. At this time, the identification code is latched by the driver circuit 43 and displayed on the display 44 when it is input to the Pazza memory.

Specifically, the dial signal generated when one of the above-mentioned recording keys or playback keyers is operated (regardless of the user or caller) is converted into a P4 pulse, and the rising sequence of this pulse is converted into a P4 pulse. The identification code is displayed by reading the identification code of the buffer memory into the driver circuit 43 at (' or falling edge) and causing the driver circuit 43 to latch the identification code at the falling edge (I) (or rising edge) of the pulse. It is something that will make you feel better.

The display of this identification code is the effect of a stop signal generated by operating the stop key 0 or by matching the count value of the address counter of the microconbeater 11 with the stop address. This continues until the latch of the driver circuit 43 is cleared.

The display 44 is designed to display not only the identification code but also the numbers (that is, the telephone number of the other party) when the user operates the number keys on the operation unit 41a when making a call. It is also possible.

Therefore, according to the configuration of the above embodiment, not only can a response message be sent to an unspecified caller and a message message from the caller can be recorded in the incoming call state, but also a specific caller can be sent by using an identification code. Since it is possible to record a specific message sent to the caller and a specific message at a specific location in the IC memo I713, 18 to 20, it is effective in selecting the necessary message and preventing leakage of secrets. .

In addition, by using the line changeover switch section 42,
The operating section 41 of the telephone 41 can be used for operations such as recording and previewing response messages and specific messages, and playing back messages, thereby simplifying the configuration.

Furthermore, in order to discriminate the dial signal sent from the calling party, a high band p-wave circuit 29, a low band p-wave circuit 30, waveform shaping circuits 31, 32, counter circuits s3, 34, a detection circuit 35, a waveform shaping Circuit 37.3 & Counter circuit 3
9, etc., to detect when the telephone line T, l'r, has reached a certain electrical state, detect the caller's on-hook state, and determine the end of the message. In this respect as well, the configuration can be simplified.

Further, since the identification code for designating a specific message or a specific message message is displayed on the display 44, the user can easily check the identification code, which is effective in preventing mistakes.

Furthermore, since the IC memory 13 is provided with an index area for storing identification codes, start addresses, stop addresses, etc., the IC memory can be easily increased or decreased without making major changes to the circuit. Note that the present invention is not limited to the above-mentioned embodiments, and can be implemented with various modifications without departing from the gist thereof.

〔Effect of the invention〕

Therefore, as detailed above, according to this invention, I
In an automatic telephone answering system using C memory as a recording medium, it is possible to record and play not only response messages and message messages for unspecified callers, but also recording of response messages and message messages for specific callers by using identification codes. It is possible to provide an extremely good automatic telephone answering device that can reproduce messages, facilitate selection of a message from a desired caller, and be effective in preventing leakage of secrets.

[Brief explanation of the drawing]

The drawing is a block diagram showing an embodiment of an automatic telephone answering device according to the present invention. 11...Microcomputer, 12...Operation unit,
13...IC memory, 14...microphone, 15
...Recording amplifier circuit, 16...Band Toba circuit, 17
...Delta modulation/demodulation circuit, 18-20...IC memory, 21...Band F wave circuit, 22...Reproduction amplifier circuit, 23...Selector switch, 24...Speaker, 25
...Standby switch, 26...Line transformer, 27
...Photocoupler, 28...Line switch, 29
...High band F wave circuit, 30...Low band F wave circuit, 3
1゜32... Waveform shaping circuit, 33.34... Counter circuit, 35... Detection circuit, 36... Dirt circuit,
37゜38... Waveform shaping circuit, 39... Counter circuit, 4゜... Changeover switch, 41... Telephone, 42
...Line selection switch section, 43...Driver circuit,
44...Display device.

Claims (2)

[Claims] (1) In an automatic telephone answering device that sends a response message to a caller when a call is received, and records a message from the caller on a recording medium when the response message has been sent, an operation section including an operation element, a code setting operation element, and a playback operation element; and a first unspecified output in memory that converts the response message to the caller into digitized data based on the operation of the operation element; a first storage means for selectively storing information in a calling party storage area and a first specific calling party storage area;
The digitized data stored in the storage area for unspecified callers is reproduced and sent to the calling party, and the first specified code of the memory is received in a state where the specific code sent by the calling party is received. a sending means for reproducing the digitized data stored in the calling party's storage area and sending it to the calling party; and a message message from the calling party which is digitized as data when the sending means has finished sending a response message. and storing it in a second storage area for unspecified callers of the memory, and converting the message from the caller into digitized data while the specific code sent by the caller is received. and a second storage means for storing data in a second specific caller storage area of the memory, and a first and second unspecified caller storage area of the memory based on the operation of the operation unit. 1. An automatic telephone answering device comprising: first and second storage areas for specific callers; and reproducing means for reproducing digitized data stored in the first and second specific caller storage areas. (2) The automatic telephone answering device according to claim 1, wherein the first and second specific caller storage areas of the memory share the same storage area.