JP3033700B2 - Mobile phone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a portable telephone and a PH.
It relates to an S terminal and the like.

[0002]

2. Description of the Related Art Conventionally, in this type of portable telephone, a user can set the receiving volume and the receiving volume to an optimum volume by an external switch, but the transmitting volume is appropriate. It does not have the function of notifying or setting.

[0003]

As described above, in the conventional portable telephone, since the user is not involved in the transmission volume at all, the user does not notice even if the call is made with a loud voice more than necessary, or the ambient noise is reduced. The higher the pitch, the louder the natural voice. For this reason, for example, in a public place such as in a train, there is a problem that the voice of the user of the mobile phone causes discomfort to the surrounding people and causes trouble.

[0004]

A portable telephone according to the present invention comprises:
The volume level of the call signal from the handset and the ambient noise level
Measure the sound of the call signal relative to the noise level
A transmission level measurement processing section for outputting an excessive volume signal when the volume level is equal to or more than a predetermined value; and a gain for amplifying a call signal from the transmitter for changing the gain from 0 to a predetermined value by a gain control signal. comprising a variable amplifier, and a control unit for outputting the gain control signal by the control and signal from the display operation unit after the control to operate the vibrating unit or the speaker for a predetermined time by the volume excessive signal, the predetermined value Above
If not, the call signal is output with a gain of 0,
If it is more than the fixed value, after inputting the signal from the display operation unit
And the input level of the speech signal by the gain control signal.
Is compensated for and output .

For example, the transmission level measurement processing section measures a volume level and a surrounding noise level during a non-communication, and detects a ratio (S / N ratio) between the volume level and the noise level. An S / N detection circuit for comparing the detection value of the S / N detection circuit with a predetermined reference value, and outputting the excessive volume signal when the detection value becomes larger than the reference value. It is composed.

In particular, the level measuring circuit may output a digital signal obtained by digitizing a measured value, and the S / N detecting circuit and the comparing circuit may be constituted by a circuit for digitally processing the digital signal.

A variable gain amplifier for amplifying a speech signal from the transmitter for changing a gain from 0 to a predetermined value with a gain control signal from the control unit, and a display operation unit for outputting the gain control signal May be added.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing an internal configuration of a transmission level measurement adjustment unit of FIG.

In FIG. 1, the present portable telephone is provided with an antenna 10 for transmitting and receiving radio waves to and from a base station, a radio transmitting and receiving unit 1 for converting a signal from the antenna 10 to a baseband signal, a call signal for a baseband signal and a call. The baseband processing unit 2 that performs signal processing, the receiver 4 that is a receiver, the transmitter 5 that is a microphone, and the volume level from the transmitter 5 are measured. When the volume level is equal to or higher than a predetermined value, an excessive volume signal 101 is output. The gain is always 0 and the gain control signal 1 from the control unit 6
02, a transmission level measuring and adjusting unit 3 having a variable gain type amplifier for amplifying a speech signal from the transmitter 5 having a predetermined gain value, and when the excessive volume signal 101 is received, the vibration unit 8 or the vibration unit 8 for a predetermined time. The control unit 6, which controls the wireless transmission / reception unit 1, the baseband processing unit 2, and the like, operates the speaker 9 and outputs the gain control signal 102 by operating the display operation unit 7, and receives a call from the base station. A vibrating section 8 for notifying a user of a call signal or an excessive volume signal 101 by vibration, an incoming call signal or an excessive volume signal 10
Speaker 9 and power supply unit 11 for notifying 1 by speaker sound
These are housed in a small, handy casing.

FIG. 2 shows the internal configuration of the transmission level measuring and adjusting unit 3.
As shown in the figure, the variable gain amplifier 31 amplifies the communication signal from the transmitter 5, measures the transmission volume level, and outputs the measured value as a digital signal. A level measuring circuit for measuring the noise level and outputting the measured value as a digital signal, storing the noise level value of the digital signal, performing arithmetic processing, and calculating the ratio between the average volume level and the noise level, ie, S / S An S / N detection circuit 33 for detecting the N ratio, an appropriate S / N ratio set in advance and stored as a reference value, and the S / N ratio output from the S / N detection circuit 33 and this reference value And S
A comparison circuit 34 outputs an excessive volume signal 101 when the / N ratio exceeds a reference value.

Next, an operation centering on the transmission level measuring and adjusting section 3 which is a target of the present invention will be described. When the user makes a call from the transmitter 5, the volume of the call signal is measured by the transmission level measuring and adjusting unit 3, and the S / N ratio between the volume level and the noise level measured during no call is used as a reference. When the value is exceeded, an excessive volume signal 101 is output. As a result, the vibration unit 8 or the speaker operates via the control unit 6 to notify the user that the transmission sound volume is excessive.

When the user speaks down, the user operates the operation unit 7 to output the gain control signal 102 through the control unit 6. At this time, the variable gain amplifier 31 inserted in the transmission circuit is activated. The higher the gain, the lower the voice. At this time, the S / N ratio deteriorates as much as the voice is dropped, but the other party's receiving side does not change the volume, so that it is easy to hear. It should be noted that this function may be normally used for the purpose of speaking in a low voice, or may not be used when unnecessary.

[0013]

As described above, the portable telephone according to the present invention monitors the transmission volume level of the user and informs the user if the level is higher than necessary. Can be. In addition, since it has an amplifier that compensates for the volume level of the dropped voice, it is possible to talk beforehand with a lowered voice, and it is less likely to inconvenience people around you in public places such as trains. effective.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a portable example of an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a transmission level measurement adjustment unit in FIG. 1;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 wireless transmission / reception unit 2 baseband processing unit 3 transmission level measurement adjustment unit 4 receiver 5 transmitter 6 control unit 7 display operation unit 8 vibrating unit 9 speaker 10 antenna 11 power supply unit 31 variable gain amplifier 32 level measurement circuit 33 S / N detection circuit 34 Comparison circuit

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-199551 (JP, A) JP-A-60-261238 (JP, A) JP-A-57-97262 (JP, A) JP-A-4- 35144 (JP, A) JP-A-63-79451 (JP, A) JP-A-62-278858 (JP, A) JP-A-4-332237 (JP, A) Japanese Utility Model Laid-Open No. 61-166649 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 1/725 H04M 1/60 H04Q 7/38

Claims (1)

(57) [Claims] 1. A volume level of a speech signal from a transmitter.And
And the surrounding noise level are measured and the
The volume level of the call signalExcessive volume signal when the value is over the specified value
Signal level processing unit that outputs the signal and the gain control signal
A call from the transmitter that changes the gain from 0 to a predetermined value
A variable gain amplifier for amplifying a signal;
The vibrating part or speaker is activated for a predetermined time by a large signal.
Control to operate and signal from display operation unit after this control
And a control unit for outputting the gain control signal., If the value is not equal to or greater than the predetermined value, the call signal is gained at zero.
And if the value is equal to or greater than the predetermined value, the display operation unit
After the signal is input from the
Compensate and output the reduced input level of the signal
 A mobile phone characterized by the above-mentioned.