JPH03150956A - Interphone set - Google Patents

Abstract

PURPOSE:To improve the convenience of use as an interphone by outputting a voice signal from a voice synthesis IC from a slave set provided at a gatedoor or the like. CONSTITUTION:The system is provided with a master set 1 and interphone slave sets 21-29, the slave set 21 is a doorphone slave set and the slave sets 21-29 are of the same constitution and operation. When a pushbutton 241 is depressed, a relevant voice signal is extracted from a voice synthesis IC 243 based on a switch output and fed to a speaker 225 to reply a visitor. Thus, when a resident is absent, the visitor immediately recognizes the absence and the interphone offers convenience and waste of time to the visitor is avoided.

Description

[Detailed description of the invention] The explanation will be given in the following order.

A. Industrial application field B. Summary of the invention C Conventional technology D Problems to be solved by the invention E. Means to solve the problem (Figure 1) F. Effect G Example (Figures 1 to 2) Effect of H invention A. Industrial application field The present invention relates to an intercom device.

B. Summary of the Invention The present invention improves the usability of an intercom device by outputting the voice from a voice synthesis IC from a cordless handset installed at an entrance or the like.

C. Conventional technology Intercom handsets installed at entrances, etc., i.e.
In door intercom handsets, when a visitor presses a button, a melody IC is generally activated to produce a sound such as "ping pong".

D Problems to be Solved by the Invention However, when using the conventional doorbell, the visitor can:
The visitor must press the push button many times until the householder responds, and when the householder does not respond no matter how many times the button is pressed, it is determined that the householder is away for the first time, which is inconvenient for the visitor.

This invention attempts to solve these problems.

E. Means for Solving the Problems Therefore, in this invention, it has a 1m and a handset,
One of the base unit and the slave unit has a voice synthesis IC, and when the push button of the slave unit is pressed, a predetermined voice signal is extracted from the voice synthesis IC, and this extracted voice signal is This is an intercom device which is supplied to the speaker of the handset and output as audio.

F Function When the visitor presses the push button, an appropriate message is output from the speaker of the intercom handset.

G Example The example shown in Figure 1 is a case where up to nine slave units can be connected to the base unit, where (1) is the base unit and (21) to (29) are connected to the base unit.
) indicates the intercom handset; in this example, (
21) is the doorphone handset. In addition, the handset (21) ~ (
The device numbers of 29) are set to "1" to "9".

Furthermore, since the slave units (21) to (29) have the same configuration and operation, the slave unit (21) will be described as a representative when there is no need to distinguish between these configurations and operations.

In the base unit (1), (110) is a transmitting circuit;
(120) indicates a receiver circuit, (140) indicates a control circuit,
(149) is a controller composed of, for example, a microcomputer. In addition, (191) is an AC adapter, and this adapter (191) converts a commercial AC voltage of 100cm into, for example, a DC voltage of 14V, and this DC voltage is stabilized in a constant voltage circuit (192) and then converted into a DC voltage of 14V. It is supplied to each circuit of the base unit (1) as their operating voltage.

Furthermore, the DC voltage from this constant voltage circuit (192) is
High output impedance buffer circuit (193) such as a constant current circuit → terminal (115) of main unit (1) → line (
12) -> Terminal (221) of slave unit (21) -> High input impedance buffer circuit (291) is supplied to the constant voltage circuit (292), and this constant voltage circuit (29
The output voltage of 2) is supplied to each circuit of the child device (21) as their operating voltage.

In addition, in the handset (21), (210) is a transmitting circuit;
(220) indicates a receiver circuit, (240) indicates a control circuit,
(249) is a controller composed of, for example, a microcomputer.

Furthermore, in the handset (21), (243) indicates a voice synthesis IC, and this IC (243) has voice signals (voice data) of a plurality of response messages, and can output any voice signal among them. They can be selected and taken out by a selection signal from a controller (249).

And when in standby state, I1 machine (1)
In the controller (149), the amplifier (
124) is turned on, and the operation of the FM modulation circuit (113) is prohibited.

Furthermore, when in standby mode, the handset (21)
Also, the controller (249) controls the amplifier (2).
24) muting is turned on, and
The operation of the FM modulation circuit (213) is prohibited.

However, for example, when a visitor presses the push button (switch) (241) of the doorbell, a trigger pulse PL is output from the trigger circuit (242) according to the switch output, and this pulse PL is supplied to the controller (249). It is notified that the button (241) has been pressed. Then, due to the control signal from the controller (249),
Muting of the amplifier (224) is turned off and operation of the FM modulation circuit (213) is permitted.

Furthermore, the pulse PL is supplied to the counter (244) and counted, and this count value CT is set to the controller (244).
249) and the count value CT, in this case CT
A selection signal corresponding to I = 1 is formed, and this selection signal corresponds to I
C (243), and the pulse Pt is supplied to I
It is supplied to the IC (243) as a start signal for extracting the audio signal, and from the IC (243), in response to CT=1, a melody signal of "Ping Pong" and an audio signal of "Please wait for a while" are sent. taken out. These signals then pass through the amplifier (224) to the speaker (22).
5), and from the speaker (225), the button (
241) is pressed, a "ping pong" sound is heard, and "
Please wait for a while" is output in sequence.

In addition, in the controller (249), a predetermined control signal is formed, and this signal is supplied to the [)TPIF signal encoder (248), and the DTMF signal S indicating the complement of the device number of the slave unit for "IO" If the signal S acid,
Since the device number of the handset (21) is rLJ, the DTMF signal S signal S indicating "9" is output.

The DTMF signal S signal is then supplied to the FM modulation circuit (213) through the S signal amplifier (212), for example, the second
As shown in the figure, FM with a carrier frequency of 5.5MHz
It is converted into a signal Su.

Then, this signal Su is filtered through a bandpass filter (214
) → Terminal (221) → Line (12) → Terminal (115)
→The original TMP signal Ss is supplied to the FM demodulation circuit (123) through the signal line of the bandpass filter (122), and the original TMP signal Ss is supplied to the DTMF signal decoder (145). The decode output is supplied to the controller (149) and the device number "
1'' child 4ffl (21) notifies the controller (149) that the DTMF signal S signal S has become weak.

Then, the melody circuit (
A trigger pulse is supplied to 146) to form a melody signal, and this signal is supplied to Teshy'J (148) through an amplifier (147), so that the button (241) is also pressed from the speaker (148). A melody indicating that the button (241) is pressed is played for a certain period of time each time the button (241) is pressed.

Therefore, for example, when a household member picks up the handset (101), this causes the hook switch (144) to go off-hook, and this also switches the controller (14) to the off-hook state.
9), and based on this detection result, the operation of the FM modulation circuit (113) is permitted, and the amplifier (
124) is turned off.

Then, the microphone (1) of the handset (101)
11), the voice signal St is transmitted from the microphone (ill) to the modulation circuit (112) through the amplifier (112).
13) and is converted into an FM signal Sd with a carrier frequency of 6.5 MHz, as shown in FIG. 2, for example.

Then, this signal Sd is filtered through a bandpass filter (114
) → Terminal (115) → Line (12) → Terminal (221)
→It is supplied to the FM demodulation circuit (223) through the signal line of the band pass filter (222), and this demodulation circuit (2
23), the audio signal St is taken out.

This signal St is then supplied to the speaker (225) through the amplifier (224), and therefore the speaker (
225) outputs the voice spoken to Handsef) (ill).

At this time, other handsets (22) to (29) also have FM.
Although the signal Sd is being supplied, these slave units (22) ~
In (29), since the button (241) is not pressed, the muting of the amplifier (224) is on and the operation of the FM modulation circuit (213) is prohibited. Therefore, no sound is output from the speakers (225) of the slave units (22) to (29), and no signal Su is sent from the slave units (22) to (29).

When the visitor speaks into the microphone (211) of the handset (21), the audio signal Sr is transmitted to the microphone (211).
) is supplied to the modulation circuit (213) through the amplifier (212), and similar to the DTMF signal S signal S acid, the FM signal S
u and sent to the base unit (1), and then sent to the demodulation circuit (12
3), the audio signal Sr is extracted. This extracted signal Sr is then supplied to the receiver (125) of the handset (101) through the amplifier (124).

Therefore, it is possible to make a phone call between the family member and the visitor.

Then, when the call ends, press the handset (101).
When on-hook, the encoder (
142) is controlled by the DTMF signal S indicating the "*" key.
c is output. Then, this signal Sc is the FM signal Sd
The decoder (245) of the slave unit (21) outputs the DTMF signal Sc of the “*” key.
The decoded output of is taken out and this output signal is supplied to the controller (249).

Then, the controller (249) controls the amplifier (22).
4) is turned on, the operation of the modulation circuit (213) is prohibited, and furthermore, the muting of the counter (213) is turned on.
The count value CT of 44) is reset to "0".

Therefore, parent a (1) and child 4ffi (21) have entered the standby state again.

In addition, if the visitor presses the push button (241) only once, the family member may not notice the visitor, and in that case, a "ping pong" sound and a voice saying "Please wait for a while" may be heard. After that, you will be kept waiting.

Therefore, when the visitor presses the button (241) many times, the pulse pt at that time is sequentially counted on the counter (244), and the count value CT is displayed on the button (241).
Each time is pressed, it is incremented by lJ.

When this count value CT reaches, for example, rto, this is determined by the controller (249), and a selection signal from the controller (249) causes IC(
243) is changed from the previously extracted audio signal to the next audio signal, for example, the melody signal of "ping pong" and the audio signal of "I'm sorry. Please wait a little longer." is taken out. These signals are then supplied to the speaker (225) through the amplifier (224), and the speaker (225)
), the sound of "ping pong" and "I'm sorry.

Please wait a little longer.'' is output in sequence.

Also, in parallel with this operation, the visitor clicks the button (241)
Each time you press , an FM signal Su having a DTMF signal Ss is sent to vAi (1) by a pulse Pt, and in the base unit (1), every time the DTMP signal Ss is sent, this is sent to the decoder. (145) in the controller (149) and its DT
For each MF signal Ss, that is, each time the button (241) is pressed, the amplifier (
147) has been increased.

Therefore, if the visitor presses the button (241) many times, the handset (21) will press the button (241:
Each time you press , the response voice changes in order, and the speaker (14) on the base unit (1) changes.
Melody from 8) - The sound gradually gets louder.

Therefore, the visitor can know that the doorbell is working properly, and the household members can also be sure of the presence of the visitor.

Also, when a householder picks up the hand cent (101), a call channel is opened between the base unit (1) and the child @ (21) as described above, and you can talk to the visitor. , instead of making a call, if you press the dial key (141), for example, the "#" key and the "1" key in sequence, the encoder (142) will output the DTMF signal Sc of the "#" and "1" keys in sequence. , this signal S'c is the FM signal Sd
is sent to the slave unit (21).

In the handset (21), a decoder (245)
The decoded outputs of r#J, rl, and key DT etc. signals Sc are extracted from the decoded outputs and supplied to the controller (249). Then, from the controller (249) to the IC (243)
) is supplied with a selection signal and a start signal to I C(2
43), a voice signal such as "Which way is it?" is taken out, and this signal is supplied to the speaker (225) through the amplifier (224), and from the speaker (255), a voice signal saying "Which way is it?" is output from the speaker (255). ” A voice is output as if asking a question.

If the visitor says something in response to this response, this can be heard on the receiver (125), but if the visitor is a salesman and has no business, for example, the dial key (141) can be used to When you press the "#" key and the "2" key in sequence, "#" and "2" will be output from the encoder (142).
The key DTMF signals Sc are output in order, and this signal Sc
is sent to the handset (21) by the FM signal Sd.

In the child 1 (21), the decoder (245)
to “#”, r2. The decoded output of the key DTMF signal Sc is taken out and supplied to the controller (249). Then, from the controller (249) to the IC (243)
) is supplied with a selection signal and a start signal to I C(2
43), an audio signal of, for example, "Please do it again next time" is extracted, and this signal is supplied to the speaker (225) through the amplifier (224).

That is, when there is a visitor, if the householder presses a predetermined key of the dial keys (141) instead of the householder responding, the voice from the LC (243) will respond instead of the householder.

Therefore, you can deal with this when you don't want to interact with visitors. Alternatively, when a woman lives alone, a crime prevention effect can be obtained by setting the reception voice to be a male voice.

Further, when the base unit (1) and the handset (21) are in the standby state, if the handset (101) is picked up and placed in the off-footer state, the base m(1) enters the talking state as described above.

Therefore, when the dial key (141), for example, the "#J primary key and the "0" key are pressed in sequence, the encoder (142) outputs the DTMF signal Sc of the "#" and "0" keys in order, and this signal Sc is sent to the handset (21) by the FM signal Sd.

In the handset (21), a decoder (245)
The decoded output of the DTMF signal Sc of the "#" and "0" keys is extracted from the controller (249) and supplied to the controller (249). Then, the fact that the "#" and "0" keys have been pressed is stored in the controller (249), and the operation of the FM modulation circuit (213) is permitted for a predetermined period, and the device number is set as described above. A DTMF signal Ss indicating "1" is sent to the base unit (1) by the FM signal Su.

Then, this DTMF signal Ss can be confirmed on the receiver (125), so once this is confirmed, the handset (101) is put on the hook.

In this way, the controller of child 1 (21) (
249) is in a state where the pressing of the "#" and "0" keys is memorized, there is a visitor, and the push button (
241), the controller (249) will
A selection signal and a start signal are supplied to (243) and I
For example, the melody signal of "Ping Pong J" and the audio signal of "I'm away from home" are taken out from C (243), and these signals are supplied to the speaker (225) through the amplifier (224). (225)
The ``ping pong'' sound and the voice ``I'm away at the moment'' are output in sequence.

Therefore, the visitor can know that the visitor is away without having to press the button (241) many times.

Alternatively, you can use a stay-at-home service.

In addition, on the base unit (1), after going off-hook, if you press the dial key (141), for example, the "#" key and the "9" key in sequence, when you press the "#" key and the "0" key, Similarly, "#" in the controller (249),
The memory of the pressing of the "0" key is cleared, and the absence response is canceled.

Furthermore, when you go out and lock the front door without setting up a response to your absence as described above, if you turn on the switch (271) of Child 1 (21), for example, you can prevent visitors from coming. When the user presses the button (241), a selection signal and a start signal are supplied from the controller (249) to the IC (243), and the IC (243) also outputs the ``Ping Pong J melody signal'' and the message ``I'm home.'' An audio signal saying "I'm away from home" is picked up to notify you that you're away.

In this case, by turning off the switch (271), the absentee service is canceled.

Also, when doing work that requires you to keep your hands off for a while,
For example, when cooking 1, press this dial key (
141) can also be stored in the controller (249), in which case the visitor presses the button (
241), an audio signal from the IC (243) causes the speaker (225) to output a voice message such as "I can't take my hands off you for a moment, so please wait a moment."

Note that in the above, the counter (244) can also be realized by software in the controller (249).

H Effects of the invention Thus, according to the invention, when the push button (241) is pressed, the voice synthesis I is performed based on the switch output.
Since the reception audio signal is extracted from C (243) and supplied to the speaker (225) to respond to the visitor, when the householder is away, the visitor knows immediately that the visitor is away. It is convenient and saves time for visitors.

Alternatively, when the button (241) is pressed, the audio signal corresponding to the input from the dial key (141) is
(243) and is outputted from the speaker (225), so it is possible to respond appropriately to the visitor.

In other words, if the visitor presses the button (241) many times, the response voice will be changed in sequence on the slave unit (21), and the speaker (148) will be changed on the base unit (1). The melody from the doorbell will gradually get louder, so the visitor will know that the doorbell is working properly, and the household members will also be sure to know that the visitor is there.

Furthermore, when there is a visitor, instead of the family member responding to the visitor, the user can press a predetermined key on the dial key (141).
Since the voice from the IC (243) will respond in place of the family member, you can deal with the situation when the visitor does not want to respond. Alternatively, when a woman lives alone, a crime prevention effect can be obtained by setting the reception voice to be a male voice.

Also, when doing work that requires you to keep your hands off for a while,
For example, when cooking, a voice can be output to notify you of this.

Moreover, the control signal sent from the base unit (1) to the slave unit (21) is a DTMF signal, and encoders and decoders for this DTMF signal are widely used and inexpensive in button-type telephones (Butshuphones). The cost of the entire device can be reduced.

Furthermore, an FM signal Su sent from the slave a (21) to the base unit (1), an FM signal Sd sent from the base unit (1) to the slave unit (21), and an FM signal Sd sent from the base unit (1) to the slave unit (21). Since all the operating voltages sent to the devices are sent through a common line (12), the wiring between the parent device (1) and the child device (21) is simplified, and from this point of view as well, the overall cost is reduced. be able to.

Moreover, since the operating voltage of the slave unit (21) is supplied from the master unit (1), the slave unit (21) can be installed even if there is no power outlet nearby. Moreover, the operating voltage supplied from the master unit (1) to the slave units (21) is also sent through a common line (12).

[Brief explanation of the drawing]

FIG. 1 is a system diagram of an example of the present invention, and FIG. 2 is a diagram for explaining the same. (1) is the main unit, (21) to (29) are the slave units, (101)
is a handset, (110) and (210) are transmitting circuits, (120) and (220) are receiving circuits, (140) are
), (240) is a control circuit, and (243) is a voice synthesis IC. Diagram

Claims (1)

[Claims] It has a base unit and a slave unit, one of the base unit and the slave unit has a voice synthesis IC, and when the push button of the slave unit is pressed, the voice synthesis IC
An intercom device in which a predetermined audio signal is extracted from C, and the extracted audio signal is supplied to a speaker of the handset and output as audio.