JP2560884B2 - Mobile phone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a mobile phone with a jack for a headset.

[Conventional technology]

2. Description of the Related Art Conventionally, this type of mobile phone radio device is composed of a ringing tone generating unit that generates a ringing tone when an incoming call is received, a transmitting unit, a receiving unit, a dial display unit, a keyboard unit including a numeric keypad and function keys, an antenna and a wireless transmitting / receiving unit. And
The ringing tone generating section that generates a ringing tone when an incoming call is directly attached to the body of the mobile wireless telephone.

[Problems to be Solved by the Invention]

In the above-mentioned conventional portable radio telephone, the ringing tone generating section for producing a ringing tone when a call arrives is directly attached to the portable radio telephone body, so for example, when carrying it in a sealed object such as a bag or a handbag. However, if there is ambient noise even if the ringing tone sounds, there is a drawback that it is hardly heard. Also, it may be possible to use by raising the ring volume, but for that purpose, a considerable volume is required,
For example, there is a means to enlarge the shape of the alarm phone or the speaker, which is the ringing tone generation part, but as a result, the portable wireless telephone becomes large and difficult to carry around.
At the same time, it is necessary to increase the signal level to the ringing tone generator, but as the general tendency is to reduce the operating voltage associated with miniaturization, the saturation level of the ringing tone signal decreases and large signal levels are reduced. It's getting harder to occur.

[Means for solving the problem]

A portable radio telephone according to the present invention is a portable radio including a portable radio telephone main body having a headset jack and a ringing tone generator main body connected to a cord having a headset plug connected to the tip thereof. The telephone has a detection means for detecting that the headset plug is joined to the headset jack of the portable radio telephone body, and the ringing tone generator body is connected to the portable radio telephone body. And a switching means for switching the ringing tone signal level at the terminal of the headset jack of the portable radio telephone body to a predetermined level necessary for the ringing tone generator body and transmitting the ringing tone signal level. A first terminal of the headset plug of the ring back tone generator body when the ring back tone generator body is connected to the portable radio telephone It is grounded, and the ringing tone from the mobile radiotelephone body terminal has a connection passage for connecting the second terminal of the ring tone generator body.

〔Example〕

 Next, the present invention will be described with reference to the drawings.

1 and 2 are a perspective view and a block diagram showing a portable radio telephone according to an embodiment of the present invention, and FIG. 3 is a diagram showing an example of use of the portable radio telephone according to the present embodiment.

1 and 2, the portable radio telephone of this embodiment comprises a portable radio telephone main body 1 and a ringing tone generator main body 9 connected by a cord 10.
Is a wireless transmission / reception unit 2 that transmits / receives communication information via an antenna 12, a ringing tone generation circuit 13 that generates a ringing tone when a ringing signal is detected by the wireless transmission / reception unit 2, and a ringing tone that amplifies the ringing tone. An amplifier 14, a ringing tone generating section 7 that amplifies a ringing tone, a receiving amplifier 15 that amplifies a receiving signal, a receiving section 4 that converts the receiving signal into voice, and a transmitting unit that converts the transmitted voice into a transmitting signal. It is configured to have a calling unit 3, a headset jack 8, and a detection circuit 6 for detecting that a headset (not shown) is used in the transmitting unit 3 or the headset jack 8 and call the unit. Code 10 on the sound generator body 9
It has a plug 11 which is joined to the headset jack 8 through the end of the plug 11.

Next, the operation of this embodiment will be described with reference to FIG. 1 and FIG.

Usually, when only the portable radio telephone main body 1 is used without connecting the ring back tone generator main body 9, a bias voltage is applied to the transmitter 3 from the power source in the radio transmitter / receiver 2, and the headset is used. When a headset (not shown) is connected to the jack 8 for use, the detection circuit 16 detects the applied voltage.

If the plug 11 is joined to the headset jack 8, the terminal 17 is grounded in the mobile radio telephone body 1 via the plug 11 and the detection circuit 16 detects that the terminal 17 has no bias voltage. The detection circuit 16 sends a detection signal to the amplifier 15, and controls the amplifier 15 to amplify the ringing tone signal from the ringing tone generating circuit 13 to a level required for the ringing tone generator main body 9, and as a result, the portable radio When the telephone main body 1 receives the ringing signal, the ringing tone generator main body 9 outputs a loud sound so that the ringing tone can be sufficiently heard.

When the plug 11 is separated from the headset jack 8, the detection circuit 16 detects the bias voltage of the terminal 17 and the amplifier 15 restores the level of the amplifier 15 to the original level.
To control.

FIG. 3 shows an example of use of the portable wireless telephone of this embodiment.

The mobile phone body 1 is placed inside the bag 30, and the ring back tone generator body 9 is attached outside the bag 30. When the user of this embodiment hears the ringing tone from the ringing tone generator main body 9 at the time of an incoming call, the portable wireless telephone body 1 is taken out from the bag 30, the ringing tone generator body 9 is removed, and the keyboard inside the portable wireless telephone body 1 is removed. You can enter into a call by operating the section.

〔The invention's effect〕

As described above, according to the present invention, the detecting means for detecting that the headset plug connected to the ringing tone generator main body is joined to the headset jack of the portable radio telephone, and the ringing tone at the time of this joining. A ringing tone is generated when the portable wireless telephone is carried in a sealed object such as a bag by having a sending unit that switches the ringing tone level from the generator body to a predetermined level and sends it out. By connecting the device to the headset jack of the mobile wireless phone body and exposing the ringer generator body to the outside of the sealed object, it is possible to hear the ringtone reliably when receiving a call and avoid the calling term. There is an effect that can be made.

[Brief description of drawings]

1 and 2 are a perspective view and a block diagram, respectively, showing a portable radio telephone according to an embodiment of the present invention, and FIG. 3 is a diagram showing an example of use of the portable radio telephone according to the present embodiment. 1 ... Mobile phone main body, 2 ... Wireless transceiver, 3 ...
… Speaker, 4 …… Receiver, 7 …… Ring tone generator, 8 ……
Headset jack, 9 ... Ringer generator body, 10
…… Cord, 11 …… Plug, 12 …… Antenna, 13 …… Ring tone generation circuit, 14,15 …… Amplifier, 16 …… Detection circuit, 17
…… Terminal, 30 …… bag.

Claims (3)

(57) [Claims] 1. A portable wireless telephone comprising a portable wireless telephone device main body having a headset jack and a ringing tone generator main body connected to a cord having a headset plug connected to the tip thereof. A portable wireless telephone having a detecting means for detecting that the headset plug is joined to the headset jack of the portable wireless telephone body. 2. A ringing tone signal level at a terminal of the headset jack of the portable wireless telephone body is set to the ringing tone generator body when the ringing tone generator body is connected to the portable wireless telephone body. 2. The portable radio telephone according to claim 1, further comprising a sending means for switching to a required predetermined level and sending the level. 3. A first terminal of the headset plug of the ring back tone generator main body is grounded when the ring back tone generator main body is connected to the mobile radio telephone main body, and the mobile radio telephone main body. 3. The portable radio telephone according to claim 2, wherein the terminal for the ringing tone from is connected to the second terminal of the ringing tone generator main body.