JPH07121028B2 - Telephone device with hands-free cordless handset - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a telephone device provided with a hands-free handset suitable for use in a home telephone system or the like.

[Prior Art] Conventionally, there is a home telephone system or the like that includes a main device connected to a central office line and a plurality of telephone slave units connected to the main device.

Here, each telephone subunit has an outgoing / incoming call function for the central office line (all functions of outgoing call, incoming call and call) and an outgoing / incoming call feature between the telephone subunits.

Further, the main device has a connection function between the central office line and each telephone slave unit and a connection function between the telephone slave units.

[Problems to be Solved by the Invention] However, since the above-described conventional telephone slave unit has an outgoing / incoming call function with respect to an office line and other telephone slave units,
The structure becomes complicated, and it must be heavy and large. This hinders the installation of a second or third telephone subunit in the kitchen or bathroom.

Further, in the above-mentioned conventional telephone handset operation, it is necessary to pick up a handset including a transmitter and a receiver with one hand and keep the handset held at the mouth and ears. This hinders workability in a kitchen, an office, or the like where a hand cannot be released.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a telephone device equipped with a hands-free cordless handset in which a lightweight and compact cordless handset can be easily added and a telephone call can be made freely with both hands.

[Means for Solving the Problems] The present invention is directed to a main device for connecting a station line to a telephone cordless handset and a handsfree cordless handset, a telephone cordless handset for making incoming and outgoing calls to the telephone line, and the telephone line. From the voice output unit that outputs the incoming call signal and the reception signal from the voice as a voice, the voice input unit that inputs the voice of the user, the voice output unit and the control unit that controls the connection between the voice input unit and the central line. It has a hands-free cordless handset that responds to an incoming call from a station line with either a telephone cordless handset or a hands-free cordless handset, and makes a call to the station line only with the telephone cordless handset. .

[Operation] According to the present invention, the telephone cordless handset performs the operations of making a call, receiving a call, and making a call to and from the office line by way of the main device.
It is possible to perform operations such as making a call, receiving a call, and making a call with the handsfree child machine. In addition, the hands-free cordless handset can perform operations such as incoming call and telephone call with the central office line and originating, receiving, and telephone call operations with the telephone cordless handset via the main unit. .

Here, since the hands-free cordless handset does not have a transmission function (for example, a dial circuit) for the office line, the structure is simple and the weight is small. Therefore, it is possible to easily add a second or third slave unit to the kitchen or bathroom.

Further, the call operation by the hands-free slave device can be performed with both hands free (release) after using one hand during the response operation applied to the response switching means. Therefore, a call can be made without impairing workability in a place such as a kitchen or an office where the hands cannot be released.

[Embodiment] FIG. 1 is a system diagram showing a home telephone system according to an embodiment of the present invention, FIG. 2 is a schematic diagram showing connection wiring of the home telephone system, FIG. 3 is a circuit diagram showing a main device, and FIG. FIG. 5 is a circuit diagram showing a normal telephone handset, FIG. 5 is a circuit diagram showing an answering machine handset, and FIG. 6 is a circuit diagram showing a handsfree handset.

As shown in FIG. 1 and FIG. 2, the telephone device 10 has a central line (L1,
L2) main unit 12 connected to 11, normal telephone subunit 13 connected to main unit 12, answering machine subunit 14, hands-free subunit
15, an intercom 16, and an alarm device 17.

The normal telephone handset 13 and the hands-free handset 15 are normal power consumption type handset handsets that can be driven by the electric power supplied through the station line 11. On the other hand, the above answering machine cordless handset 14 is
It is a high-power-consumption telephone handset that cannot be driven only by the power supplied at 11, and needs to be provided with auxiliary power.

(A) The main device 12, as will be described in detail later, has an outside line connection function for connecting the office line 11 to each of the telephone cordless handsets 13 and 14 and the handsfree cordless handset 15, the telephone cordless handsets 13 and 14, and the handsfree cordless handset. It has an extension connection function for connecting each of the four units of the machine 15 and the intercom 16, and an alarm connection function for connecting the alarm device 17 to each of the telephone subunits 13 and 14, the handsfree subunit 15 and the intercom 16. .

The main unit 12 is constructed as shown in FIG. 21 is an incoming call detection element, 22 is a call detection element, 1, l2, h are relays, t1
Is a transformer, 23 is a CPU, L1, L2, H is a relay drive unit, 24 is a key press detection circuit, 25 is a doorphone / extension ring tone generation circuit, 26 is a hold tone circuit, 27 is a filter, 28 is a doorphone communication circuit , 29 is an alarm receiving circuit, 30 is a power supply circuit, and 30A is a power plug.

(B) The normal telephone slave unit 13 is, as described in detail later,
An incoming / outgoing call function for 11, an incoming / outgoing call function for an answering machine slave 14, an outgoing / incoming call function for a hands-free slave 15, an incoming call function for an intercom 16, and an incoming call function for an alarm device 17 are provided.

The normal telephone subunit 13 is constructed as shown in FIG. D1,
D2 is a rectifier circuit, 31 is a tone ringer circuit, S is a sounder,
32 is a calling circuit, 33A is a transmitter, 33B is a receiver, 34 is a dial key, 34 is a dial IC, 36 is a dial circuit, 37 is a constant voltage circuit, 38 is a filter, 39 is an on-hook button, HS is a hook switch, Reference numeral 40 is a control IC, SP is a speaker, 41 is an extension call button, and 42 is a hold button.

(C) The telephone answering machine 14 has an answering machine function (message recording / playback function) in addition to all the functions of the normal telephone handset 13 as described later.

The answering machine subunit 14 is constructed as shown in FIG. In the answering machine slave unit 14, the same functional parts as those in the normal telephone slave unit 13 are designated by the same reference numerals. In the answering machine slave unit 14, functional parts different from those in the normal telephone slave unit 13 are as follows. That is, t2, t3
Is a toance, 51 is a PB receiver, 52 is a BT receiver, 53 is a CP
U and 54 are DRAM, 55 is various function keys (for example, family button), 56 is an incoming call detection switch, 57 is a power failure detection switch,
Reference numeral 58 is a power supply circuit.

(D) The handsfree cordless handset 15 will be described in detail later.
Incoming call function for the central office line 11, outgoing / incoming call function for the telephone subunits 13 and 14, incoming call function for the intercom 16, incoming call function for the alarm device 17, and a hands-free function that allows the above-mentioned call functions to be performed with both hands freely. Is equipped with.

The handsfree slave unit 15 is constructed as shown in FIG.
E1 and E2 are rectifier circuits, 61 is a tone ring circuit, SP is a speaker, 62 is a call circuit, 63 is a voice switch control circuit, 64 is a microphone, t4 is a transformer, 65 is a control IC, and 66 is a response button (response switching means). ), 67 is an extension call button, and 68 is a hold button.

(E) The intercom 16 is a telephone subunit 1 as will be described later.
It is equipped with outgoing call function for each of 3, 14 and hands-free handset 15.

(F) The alarm device 17 is, as will be described in detail later, a telephone slave unit 1.
It has a transmission function for each of 3, 14, hands-free cordless handset 15, and intercom 16.

In the above-mentioned telephone device 10, the main device 12 is provided with the main telephone connection device 13 for the normal power consumption type telephone handset, and the main normal connection line (voice / control main signal) for the hands-free handset device 15. Line) 71 is connected, and sub-normal connection lines (audio / control sub-signal lines) 73A and 73B that are distributed to two systems via a distributor 72 are connected to this connection line 71, and one sub-normal connection The normal telephone slave unit 13 is connected to the line 73A, and the handsfree slave unit 15 is connected to the other sub-normal connection line 73B. Connection lines 71, 73A, 73B
Consists of a four-core cable that constitutes a voice / control signal line, two cores A1 and A2 of which are station lines and the other two cores B1 and B2 of which are extension lines.

Further, in the above-mentioned telephone device 10, the main device 12 and the answering machine telephone handset 14 as a high power consumption telephone handset are connected by a special-purpose connection line 81. The special-purpose connecting line 81 is made of a 6-core cable, and the 2-cores A1 and A2 thereof are station lines, the other 2-cores B1 and B2 are internal lines, and the other 2-cores C1 and C2 are power source lines. The above 4
The cores A1, A2, B1 and B2 form a voice / control signal line. The power supply lines C1 and C2 connect the power supply circuit 30 of the main device 12 and the power supply circuit 58 of the answering machine subunit 14.

That is, in the telephone device 10, the main device 12 and the answering machine subunit 14 are connected to the special equipment connecting line 81 including the power lines C1 and C2.
And supplies power to the power supply circuit 58 of the answering machine subunit 14 as a high power consumption type cordless handset, and the CPU 53 and DRA described above are connected.
It is possible to secure auxiliary power to drive the M54, etc.

Further, in the telephone device 10, the main device 12 and the intercom 16 are connected by the intercom connection line 91. The connection line 91 is
It consists of a two-core cable that constitutes an audio signal line.

Hereinafter, various operation modes of the telephone device 10 will be described.

External line transmission The external line transmission operation by the telephone handsets 13 and 14 is as follows. In other words, pressing the dial key 34
The IC 35 operates, which drives the dial circuit 36. The dial signal emitted by the dial circuit 36 is a rectifier circuit D.
2, sent to the office line 11 via the office lines A1, A2 and the relay 1.

External line incoming call The external line incoming operation by the telephone subunits 13 and 14 for the incoming call from the office line 11 is as follows. Signal from station line 11 (16Hz75
V) arrives at the tone ringer circuit 31 via the relay 1, office lines A1, A2, and rectifier circuit D1, and further the incoming volume control switch
The ringtone is transmitted from the sounder S via 31A.

The external line incoming operation by the hands-free cordless handset 15 is similar to the above, and the signal from the station line 11 reaches the tone ringer circuit 61 via the relay 1, the station lines A1 and A2, and the rectifier circuit E1, and the speaker.
Ring tone is sent from SP.

External line call (1) External line transmission ... External line transmission by the telephone subunits 13 and 14 is performed as follows. The transmission signal from the transmitter 33A is the communication circuit 3
2, rectifier circuit D2, station line A1, A2, relay 1 via station line 11
Sent to.

(2) External line reception ... External line reception by the telephone subunits 13 and 14 is performed as follows. The received signal from the station line 11 is relay 1,
Handset 33B via station lines A1, A2, rectifier circuit D2, call circuit 32
Is received.

(3) External call by the hands-free cordless handset 15 (sending and receiving) ... When the answer button 66 is pressed in response to the ring tone from the speaker SP of the hands-free cordless handset 15, the call circuit 62 is activated by the operation of the control IC 65. Will start. As a result, the reception signal from the office line 11 is sent from the speaker SP via the relay 1, the office lines A1 and A2, the rectifier circuit E2, the communication circuit 62, the voice switch control circuit 63, and the transformer t4, and is added to the microphone 64. The transmitted voice signal is the voice switch control circuit 63 and the communication circuit.
62, rectifier circuit E2, station lines A1, A2, relay 1 and then station line 11
Sent to.

While holding a call using the outside line hold telephone cordless handsets 13 and 14, handsfree cordless handset 15,
When the hold buttons 42 and 68 are pressed, the hold signal generated thereby reaches the key press detection circuit 24 of the main device 12 via the extensions B1 and B2, and the UPU 23 operates. The relay drive unit H sends a signal by the operation of the CPU 23, which causes the holding sound circuit.
26 issues a hold sound signal, and this hold sound signal is sent to the station line 11 via (a) amplifier 27A and relay h closed by the relay drive unit H after passing through the filter 27.
(B) Telephone on-hold monitor route 26A, amplifiers 27B and 27C, telephone extensions 13 and 14, hands-free extension 15 via extensions B1 and B2
Is sent to each speaker SP as a monitor.

Extension call When the extension call is made between the telephone subunits 13 and 14 and the hands-free subunit 15 when the extension call buttons 41 and 67 are pressed and the extension signal is transmitted by this, this signal is transmitted to the extension B.
The key press detection circuit 24 of the main unit 12 is reached via 1 and B2, and C
PU23 works. The intercom / extension ringing tone generation circuit 25 sends out a signal by the operation of the CPU 23, and this extension ringing tone signal passes through the amplifiers 27B and 27C, the extension lines B1 and B2, and the telephone subunits 13, 14,
It reaches each speaker SP of the hands-free slave unit 15 and is output as an extension ringing tone. In this case, an extension call can also be made from the handsfree slave unit 15 to the telephone slave unit 13 connected by the distributor 72.

Extension call (1) Extension call between the telephone subunits 13 and 14 is performed as follows. For example, the transmission signal sent from the transmitter 33A of the telephone slave unit 13 is a communication circuit 32, a rectifier circuit D2, station lines A1 and A2 on the slave unit 13 side, relays 1 and 12 (at this time, driven by the CPU 23). The relays 1 and 12 are switched to the opposite side in FIG. 2 by the signal transmission of the relay driver 1 and 12), and further, the station lines A1 and A2, the rectifier circuit D2, and the communication circuit 32 on the side of the slave unit 14 side. To reach the handset 33B of the telephone subunit 14.

(2) Telephone handsets 13, 14 and hands-free handsets 15
The mutual call with is made as follows. For example, telephone handset 13
When the response button 66 is pressed while the extension ringing sound is transmitted from the speaker SP of the handsfree cordless handset 15, the call circuit 62 is activated by the operation of the control IC 65. As a result, the transmission signal transmitted by the transmitter 33A of the telephone subunit 13 is the communication circuit 32, the rectifier circuit D2, the office lines A1, A2, the relays 1 and 12 (at this time, the relay drive unit 1 driven by the CPU 23). , L2 are switched to the opposite side in FIG. 3 by the signal transmission of L1, L2), and further, the office lines A1, A2, the rectifier circuit E2, the communication circuit 62, the voice of the handsfree slave unit 15 side. It is transmitted from the speaker SP via the switch control circuit 63. On the contrary, the transmission signal applied to the microphone 64 goes through the voice switch control circuit 63, the communication circuit 62, and the rectifying circuit E2 and follows the route opposite to the above, and reaches the handset 33B of the telephone subunit 13.

Family message recording function When the family button in the various function keys 55 of the answering machine subunit 14 is pressed, the CPU 53 operates. Under this condition, when voice input to the transmitter 33A of the answering machine subunit 14,
This audio signal passes through the transformer t2, recording route 55A, and CPU53.
And it is recorded in DRAM54.

Family Message Playback Function When the CPU 53 recognizes that the sounder S of the telephone answering machine 14 continues to ring for 9 seconds or more in response to an incoming call from the station line 11, the CPU 53 sends a response message to the station line 11.
When the touch-tone signal (PB signal), which is a recall, is input from the station line 11 to this response message, this PB
The signal reaches the CPU 53 through the station line 11, the relay 12, the station lines A1 and A2, the rectifier circuit D2, the communication circuit 32, the transformer t2, and the PB receiver 51. If the PB signal is appropriate as a memory, the signal recorded in the DRAM 54 is the CPU 53, the playback route 55B, the transformer t
3, the call circuit 32, the rectifier circuit D2, the office lines A1, A2, and the relay 12 are sent to the office line 11.

Calling the intercom When the intercom button on the intercom 16 is pressed, the main unit 12
The intercom communication circuit 28 is activated to detect the intercom incoming call. As a result, the CPU 23 drives the intercom / extension ringing tone generation circuit 25, and the intercom ringing tone signal generated thereby passes through the amplifiers 27B and 27C, the extension lines B1 and B2, and the telephone cordless handsets 13 and 14 and the handsfree cordless handsets. It is transmitted from each of the 15 speaker SPs.

Doorphone call The call added to the doorphone 16 is the doorphone call circuit 28,
Transformer t1, relay 1 (at this time, relay 1 is switched to the opposite side in FIG. 3 by the signal transmission of relay drive unit L1 driven by CPU 23), station lines A1, A2, rectifier circuit D2, dial circuit 36 , Via the call circuit 32, the phone cordless handset 1
It is possible to communicate with 3 and 14 transmitters 33A and receivers 33B. The call added to the intercom 16 can also be communicated with the microphone 64 and the speaker SP of the handsfree slave 15 in the same manner as in the above-mentioned "extension call".

When the alarm receiving device 17 is activated, the alarm receiving circuit 29 receives this signal, and the CPU 23 makes a differential. The CPU 23 drives the intercom / extension ringing tone generation circuit 25 to generate a warning sound signal, and the warning sound signal is amplified by the amplifiers 27B, 27C, extension B1,
The signal is sent from each speaker SP of the telephone subunits 13 and 14, the hands-free subunit 15, and the intercom 16 via B2.

Next, the operation of the above embodiment will be described.

According to the above-described embodiment, the telephone slave units 13 and 14 perform the operations of making a call, receiving a call, and making a call with the office line 11 by way of the main unit 12, and even with the handsfree slave unit 15. It is possible to perform operations such as making a call, receiving a call, and making a call. In addition, the hands-free cordless handset 15 allows the local line 11
Incoming and outgoing operations are performed between the
It is possible to perform operations such as making a call, receiving a call, and making a call to and from.

Here, the hands-free cordless handset 15 does not have a transmission function (for example, a dial circuit) for the curve 11, so that the structure is simple and the weight is small. Therefore, it is possible to easily add a second or third slave unit to the kitchen or bathroom.

Further, the call operation by the hands-free cordless handset 15 can be performed with both hands free (release) after using one hand during the response operation applied to the response button 66 (response switching means). Therefore, a call can be made without impairing workability in a place such as a kitchen or an office where the hands cannot be released.

Further, in the above embodiment, the main normal connection line (voice / control main signal line) 71 is connected to the main device 12, and the distributor 72 and the sub-normal connection line (voice / control line) are connected to the main normal connection line 71. It is decided to connect the normal telephone slave unit 13 and the hands-free slave unit 15 via the auxiliary signal lines 73A and 73B. Therefore, the main device
Compared to the case where the signal lines extending from 12 to the normal telephone handset 13 and the hands-free handset 15 are separated over all lines, the main unit 12 and the distributor 72 are shared, and the connection wiring is used. Can be simplified.

[Effects of the Invention] As described above, according to the present invention, it is possible to provide a telephone device provided with a hands-free handset that allows a lightweight and small handset to be easily added and allows a telephone call with both hands.

[Brief description of drawings]

FIG. 1 is a system diagram showing a home telephone system according to an embodiment of the present invention, FIG. 2 is a schematic diagram showing connection wiring of the home telephone system, FIG. 3 is a circuit diagram showing a main device, and FIG. 4 is a normal telephone. FIG. 5 is a circuit diagram showing a handset unit, FIG. 5 is a circuit diagram showing an answering machine handset unit, and FIG. 6 is a circuit diagram showing a handsfree handset unit. 10 …… telephone device, 11 …… station line, 12 …… main device, 13,14…
Telephone handset, 15 handsfree handset, 66 answer button (response switching means), 71 main main connection line (voice / control main signal line), 72 distributor, 73A, 73B ...... Sub normal connection line

Claims (1)

[Claims] Claim: What is claimed is: 1. A main device for connecting a station line to a telephone cordless handset and a hands-free cordless handset, a telephone cordless handset for making and receiving telephone calls to and from the telephone line, and an incoming signal and an incoming call signal from the telephone line. It has a hands-free cordless handset consisting only of a voice output unit for outputting as voice, a voice input unit for inputting the voice of the user, the voice output unit and a control unit for controlling the connection between the voice input unit and the central line. , It has a hands-free cordless handset characterized in that it responds to an incoming call from a station line with either a telephone cordless handset or a hands-free cordless handset, and makes a call to the telephone line only with a telephone cordless handset. Telephone device.