JPH071876Y2 - Telephone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a telephone capable of automatically setting a call holding state.

[Prior art and its problems]

Conventionally, some telephones have a mode called "hold". This mode refers to a function of temporarily prohibiting a call in a communication state and can be performed by manually operating an operation member such as a push-type switch. This kind of "hold" mode is mainly necessary because when the person who is appointed takes time to take over the call, the person who wants to call does not want to be heard by the other party. For example, when speaking.

However, the "hold" mode is operated manually, so when the caller is busy and busy,
It may not be possible to operate because you carelessly forget to operate it or hold the sample with one hand. In such a case, there is a possibility that the other party may be uncomfortable or secret information may be leaked to the outside. In addition, a caller who is taking in may inadvertently press another switch by mistake.

[Purpose of device]

The present invention has been made in view of the above-mentioned problems of the prior art, and provides a telephone capable of automatically and reliably temporarily prohibiting a call and preventing serious negligence such as leakage of confidential matters. The purpose is to

[Key points of device]

In order to achieve the above object, the present invention provides a telephone body including a telephone body and a handset with a detection member for detecting solid contact at the earpiece of the handset, and when the detection member detects solid contact. It is characterized in that a control circuit for permitting only the transmission of voice is provided.

[Example of device]

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS.

FIG. 2 is a perspective view showing the appearance of a tone line type (push button type) telephone as an embodiment of the present invention, and FIG. 1 is a block diagram showing the circuit configuration thereof.

In FIG. 2, the telephone set P includes a telephone body 1 and a cord 2 attached thereto.
It consists of a handset 3 connected by. Twelve push buttons 4a are installed on the front surface of the main body 1 in a known arrangement. On the upper part of the main body 1, a pair of pressing elements 5, 5 interlocking with a hook switch to be described later inside the main body 1 are provided so as to be retractable, and a mounting portion 1a of the handset 3 is formed.
When the handset 3 is placed on the placing section 1a, the hook switch is turned on (on-hook state), and when the handset 3 is removed from the placing section 1a, the hook switch is turned off (off-hook state). In FIG. 2, the handset 3 is detached from the placing portion 1a and is in an off-hook state.

The handset 3 includes a mouthpiece 3a and an earpiece 3b, and the earpiece 3b, which the caller puts on his / her ear, is provided with a contact detection member for detecting contact of a solid object. In this example, as the contact detection member, a pressure-sensitive sensor that detects the pressure when an object abuts is used, and the pressure-sensitive sensor 6 is attached to the peripheral portion of the earpiece 3b. Therefore, the caller picks up the handset 3 and
If you press the ear to 3b appropriately, the pressure sensor 6 turns on,
The detection signal is output. When the pressure sensor 6 is off, the control unit of the speech network 9 described later causes
It is automatically put on hold.

In FIG. 1, terminals L ₁ and L ₂ are connection terminals for connecting to an external telephone line, and are connected to, for example, an NTT (Nippon Telegraph and Telephone Corporation) telephone line. Speech circuit M extended from terminals L ₁ and L ₂
Is connected to the speech network 9 via the hook switch S ₁ , the rectifying circuit 7 and the protection circuit 8. The protection circuit 8 is provided to reduce the abnormal voltage induced in the NTT line by lightning or the like to a safe level.

The speech network 9 has a handset 3 transmitter
3a 'and handset 3b' are connected. The speech network 9 performs conversion between two lines and four lines and transmits the signal sent from the NTT line to the handset 3b 'without transmitting the signal to the handset 3a' of the handset 3 or the handset 3's transmission. Phone
The signal from 3a 'is sent to the NTT line without being transmitted to the handset 3b' side. That is, it plays a traffic control role for the flow of signals.

Further, the speech network 9 is connected with the push switch unit 4 including the above-mentioned twelve push buttons 4a. The push switch unit 4 has a DTMF (dual dual) corresponding to the telephone number data input by the push button 4a.
A tone multiple frequency signal is created and output to the speech network 9. This DTMF signal is
It is created by synthesizing low-frequency signals and high-frequency signals. For example, when the push button “1” is pressed, the DTMF signal is synthesized from the low frequency of 697 Hz and the high frequency of 1209 Hz and output to the speech network 9. The DTMF signal sent to the speech network 9 is output from the protection circuit to the external telephone line via the rectifying circuit and the terminals L ₁ and L ₂ .

Thus, the speech network 9 according to the present invention includes
The pressure-sensitive sensor 6 and the music box 11 provided in the handset earpiece 3b are connected to each other, and a control circuit for executing the automatic hold mode, which will be described later in detail, is formed inside the pressure-sensitive sensor 6.

An incoming call notification circuit R is connected to the terminals L ₁ and L ₂ via a hook switch S ₁ . The incoming call notification circuit R is composed of a coupling capacitor C ₁ , a rectifier circuit 12, a protection circuit 13, a tone ringer 14 and a speaker 15. The coupling capacitor C ₁ is provided for blocking direct current because the calling signal is an alternating current signal. Also, rectifier circuit
12 is provided for exchanging the ringing signal to direct current, and the tone ringer 14 is provided for generating vibration for ringing tone.

When an incoming call arrives at the telephone P, the ringing signal from the telephone line is input from the terminals L ₁ and L ₂ to the hook switch S _{1 in the} on state (the handset 3 is on hook) → the capacitor C ₁ → the rectifying circuit 12 → the protection circuit 13 → the tone ringer. Sound the speaker 15 via 14. When the handset 3 is picked up by the ringing sound of the speaker 15, the hook switch S ₁ is switched to the off side, and thereafter,
It is possible to talk with the other party through the rectification circuit 7 → the protection circuit 8 → the speech network 9.

Next, the operation of the automatic hold mode provided in the telephone P will be described with reference to the flow charts of FIGS. 3 (a) and 3 (b).

At the time of the incoming call shown in FIG. 3 (a), a ringing tone is received upon receiving a ringing signal from the other party (ST1), and the ringing tone is repeated until it is off-hook (ST2). When the handset 3 is picked up by the listener and the hook switch S ₁ is turned off to enter the off-hook state, the ringing tone is stopped (ST
3). Next, the first ON / OFF judgment of the pressure sensitive sensor 6 is first performed (ST4). At this stage, if the listener appropriately presses his / her ear to the earpiece 3b of the handset 3, the pressure sensor 6 is turned on, and the second on / off judgment of the pressure sensor 6 is performed (ST5). In the second ON / OFF judgment stage, if the receiver keeps the earpiece 3b on his / her ear, the transmitter circuit is connected and the telephone conversation is possible (ST6).

On the other hand, in the second ON / OFF judgment, if the listener removes the earpiece 3b of the handset 3 from his ear and the pressure sensor 6 is off, the transmission circuit is cut off and the music box is turned on (ST7). ). That is, the telephone P is put on hold. This hold state is continued until the listener puts the earpiece 3b on his ear again.

When the listener completes the consultation on the inner ring and puts the earpiece 3b on his ear again, for example, the pressure sensor 6 is turned on, the transmission circuit is connected, and the music box 11 is turned off (ST6). That is,
The telephone set P is again in a call state in which both reception and transmission are possible. If the listener finishes talking and removes the earpiece 3b from his ear and goes on hook, the hook switch is put on hold.
S ₁ is turned on (ST8), is cut off the call circuit call is completed.

In the incoming call operation flow described above, the pressure sensor 6 is judged to be turned on and off twice in succession, which allows the music box 11 to be put on hold simultaneously with off hook.
The inconvenience of ringing is prevented. It takes at least 1 to 2 seconds until the receiver picks up the handset 3 and puts the earpiece 3b on his ear. Therefore, unless the first ON / OFF judgment (ST4) stage of the pressure sensor 6 is provided, the music box 11 is put on hold at the same time as the off-hook, and the music box 11 sounds unscrupulous and makes the caller unpleasant. Therefore, the above-described inconvenience is prevented by adopting a flow configuration in which the pressure sensor 6 is not turned on once before proceeding to the hold state (ST7). Also ST5 to S
By inserting a small timer between T7, it is possible not to ring the music box from the end of the call to the on-hook (ST8).

3 (b), the caller first picks up the handset 3 and puts it in the off-hook state (ST1). Next, operate push button 4 to perform tone transmission (ST
2). Next, it is judged whether or not the other party has received a call (S
At T3), when the call arrives, the on / off judgment of the pressure sensor 6 is performed (ST4). After that, the same flow configuration as when receiving a call,
If the caller removes the earpiece 3b from the ear and the pressure sensor 6 is turned off, the call is put on hold (ST5), and if the pressure sensor 6 is turned on by touching the ear, the call is put (ST6). ).
To end the call, the caller removes the earpiece 3b from the ear, puts it on hold (ST5), and then goes on-hook (ST
7) The call ends. Inserting some timer between ST4 and ST5 is also effective in the case of this example as in FIG. 3 (a).

As described above, in the telephone P of this example, the call is reliably and automatically put on hold unless the caller presses his / her ear into the earpiece 3b of the handset 3 appropriately to prepare for the call. Therefore, it is possible to surely prevent the other party from unintentionally hearing a matter that the other party does not want to hear, making the other party uncomfortable, and leaking confidential information to the outside.

It should be noted that the present invention should not be limited to the above specific embodiment, and various modifications can be made within the technical scope of the present invention. For example, as the contact detection member provided in the earpiece, a well-known touch sensor can be used instead of the pressure sensitive sensor 6. In this case, one electrode of the touch sensor is attached to the earpiece 3b, and the handset 3
The other electrode may be laid on the handle portion 3c. The touch sensor is turned on by detecting a contact capacitance component generated when the human body touches both electrodes of the touch sensor. When the person's ear touches the electrode of the earpiece 3b, a detection signal is output. According to the touch sensor, even if an object other than the human body comes into contact with the earpiece 3b when the off-hook handset is carelessly placed on the desk,
No detection signal is output.

Further, the present invention is applicable not only to push button type telephones but also to dial type telephones. Further, the above-described automatic hold mode and the conventional manual hold mode may be provided so that the caller can appropriately select either mode by a switch.

[Effect of device]

As described above in detail, according to the present invention, a telephone is provided with a contact detection member for an object at the earpiece of the handset, and the switching between the call state and the hold state is controlled according to the detection signal. It is possible to reliably and automatically hold the call and cancel the call. Therefore, it is possible to surely prevent the other party from unintentionally hearing a matter that the other party does not want to hear, making the other party uncomfortable, and leaking confidential information to the outside. Further, even if the hand of the caller is occupied by a material or the like, it can be automatically put on hold, and a telephone having excellent operability can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing the circuit configuration of a push-button telephone as an embodiment of the present invention, FIG. 2 is a perspective view showing the appearance of the telephone, and FIGS. 3 (a) and 3 (b) are FIG. 7 is a flowchart showing respective operations of the above-mentioned telephone at the time of incoming and outgoing calls in the automatic hold mode. 1 ... Phone body, 3 ... Handset 3a ... Mouthpiece, 3b ... Earpiece 6 ... Pressure sensor 9 ... Speech network 1 ... Music box

Claims (1)

[Scope of utility model registration request] 1. A telephone comprising a telephone body and a handset, wherein a detection member for detecting contact with a solid object is provided in an earpiece of the handset, and transmission is permitted only when the contact member detects the contact with a solid object. A telephone having a control circuit for controlling the telephone.