KR100917188B1 - Method for controlling bell volume of mobile phone - Google Patents

Abstract

The present invention relates to a bell volume control method of a mobile communication terminal for recognizing the ambient noise level using a microphone attached to the mobile communication terminal, and adjusting the bell volume of the terminal according to the recognized ambient noise level.

Mobile terminal, bell volume control

Description

Method for controlling bell volume of mobile communication terminal

1 is a view showing the external structure of a general mobile communication terminal.

2 illustrates a system configuration according to the present invention.

3 illustrates an operational flow according to the method of the present invention.

The present invention relates to a method for adjusting the ring volume by measuring the ambient noise of the mobile communication terminal.

In general, the external structure of the mobile communication terminal is as shown in FIG.

As shown in FIG. 1, the external structure of the mobile communication terminal includes a terminal main body 10, a liquid crystal display 11 displaying various messages, and an antenna 12 which increases transmission / reception sensitivity when talking to the outside. And a keypad unit 13 having various function keys, English / Korean character keys, numeric keys, and the like, a microphone unit 14 which transmits a caller's call tone to the receiver during a call, and a call tone of the other party to the receiver during a call. Consists of a speaker unit 15 for transmitting.

In the conventional mobile communication terminal as described above, the ring tone volume control according to the prior art allows the user to manually set the size of the ring tone in the terminal menu.

At this time, the ringing level set by the user of the terminal is divided into a total of five levels such as a normal silence level, a first level increase level, a second level increase level, a third level increase level, and a four level increase level. It is divided into 10 levels from the silence level to 9 levels of increase.

Therefore, when the user wants to adjust the volume of the bell sound of the terminal, there is inconvenience of having to operate manually manually according to the level divided into the above several levels, and sometimes the level operation is wrong and a strong level bell sounds in a quiet place. In a noisy place, there was a problem in that a weak level of bell sound was activated, causing inconvenience to the terminal.

In addition, by changing the terminal to vibrate during meetings or places where quietness is required, the terminal user generally sets the ringtone to be used, but changes the setting to vibrate mode when quietness is required or minimizes the ringtone. There was an inconvenience of using it in steps.

The present invention has been proposed to solve the above problems of the prior art, using a microphone attached to a mobile communication terminal to recognize the ambient noise level, the ring volume output to the outside according to the recognized ambient noise degree An object of the present invention is to provide a bell volume control method of a mobile communication terminal that can adjust the volume.
In addition, the present invention, by adjusting the bell volume according to the characteristics of the place where the user is located, by increasing the bell volume in a noisy place to eliminate the inconvenience of not hearing the bell sound, in a quiet place to reduce the bell volume bell Another object of the present invention is to provide a bell volume control method of a mobile communication terminal that does not cause inconvenience to others due to sound.

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In order to achieve the above object, the bell volume control method of the mobile communication terminal according to the present invention comprises the steps of periodically measuring the ambient noise signal input through the microphone in the communication standby state of the mobile communication terminal; Recognizing the measured ambient noise signal at a microphone volume level; Using an analog-to-digital conversion circuit, converting the ambient noise signal recognized at the microphone volume level from an analog signal form into a digital signal form, and transferring the ambient noise signal converted into the digital signal form to a central processing unit; Determining a location of the mobile communication terminal; Setting a bell volume level to correspond to the identified position; Using the central processing unit, comparing a microphone volume level of the transmitted ambient noise signal with a speaker gain level for each microphone volume level corresponding to the set bell volume level; And when the speaker gain level corresponding to the microphone volume level of the ambient noise signal exists as a result of the comparison, adjusting the ring tone to correspond to the speaker gain level corresponding to the microphone volume level of the ambient noise signal. .
Here, the speaker gain level for each microphone volume level corresponding to the bell volume level may be previously input and stored in a memory.
Furthermore, in the recognition step, the microphone volume level may be divided into eight levels, and the measured ambient noise signal may be recognized as one of the eight levels.
In addition, the speaker gain level for each microphone volume level may be divided into eight levels for each microphone volume level corresponding to the ambient noise signal input to the microphone. Furthermore, the speaker gain level for each microphone volume level may be set differently depending on whether the microphone is exposed to the outside.
Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention.
2 shows a system configuration of the present invention, and shows a ringing operation block diagram of a mobile communication terminal.

 A central processing unit (CPU) 21 is provided to control the overall ringing operation of the mobile communication terminal, and is connected to the central processing unit 21 and the memory 22 that exchanges various data with the central processing unit 21 and the central processing unit 21. Is connected to the vocoder 23 for synthesizing these voice signals on the receiving side, and converts analog signals such as voice into digital signals suitable for transmission using pulse code modulation. Conversely, a codec 24 converting a digital signal into an analog signal at a receiving side, a speaker amplifier 25 connected to the codec 24 to amplify a bell sound signal, and a speaker amplifier 25 A speaker 26 for outputting the amplified speaker signal to the outside of the terminal, a microphone 28 for transmitting the volume signal from the outside of the terminal to the codec 24, and controls the bias voltage of the signal input through the microphone 28And a microphone bias circuit 27 and an ADC circuit 27 for converting an analog signal input through the microphone 28 into a digital signal and transferring the analog signal to an ADC port of the central processing unit 21. It is composed.

3 is a flowchart illustrating an operation of a ringing operation of a mobile communication terminal for explaining the method according to the present invention.

The mobile communication terminal of the present invention automatically recognizes the noise level around the terminal as the microphone volume level in the microphone 28 and automatically adjusts the volume of the bell sound output to the speaker 26 of the terminal.

To this end, in the mobile communication terminal of the present invention, when the analog voice signal input through the microphone 28 is transferred to the codec 24, the codec 24 converts the analog voice signal input from the microphone 28 into a digital voice signal. To the vocoder 23.

The vocoder 23 then converts the digital voice signal input from the codec 24 into a voice algorithm and transfers it to the central processing unit 21 to process the voice signal. The central processing unit 21 stores the memory 22 Process bell volume data stored in).

In addition, a random analog audio signal input through the microphone 28 is converted into a digital signal which is a signal of a constant DC level by the ADC circuit 27, and then an input port of the central processing unit 21 (ADC port). To pass.                     

Here, the data stored in the memory 22 stores the bell volume data set according to the microphone volume level corresponding to the noise level around the terminal and the data according to the bell type.

On the other hand, when the operation is reversed, the central processing unit 21 processes the memory 22 data, and the processed data signal is processed into a digital voice signal through the vocoder 23, and then the analog voice is executed by the codec 24. It is converted into a signal and processed.

The analog audio signal processed by the codec 24 is amplified to a predetermined level by the speaker amplifier 25 and then output to the outside of the terminal through the speaker 26.

In the present invention, when the terminal possessed by the user is in communication standby, the noise level around the terminal can be recognized through the microphone 28. In addition, the same operation process as described above continues to check the noise level around the current terminal.

Here, the standard for measuring the noise level around the terminal is set at a very noisy level when boarding in a vehicle or on a subway, and at a very quiet level in a library or a quiet building, and at a mid-sized place. Decide on the level.

The level according to the above can be variously determined according to the experimental value, but the very noisy place is 70dB or more, the very quiet place is 30dB or less, and in the middle place, the level is set between 30dB and 70dB. .
That is, the mobile communication terminal can grasp the current location of the mobile communication terminal (eg, while in a vehicle, in the subway, a library, a park, etc.), and set a bell volume level according to the location characteristics of the identified location. have.

For example, in setting the speaker gain level for the bell volume level between 30 dB and 70 dB, it is appropriate to set between 30 dB and 70 dB in 5 steps by 5 dB, and the data divided into 8 steps (35 dB, 40 dB, 45 dB, 50 dB, 55 dB, 60 dB, 65 dB, 70 dB) are pre-stored in the form of NV (Non Volatile) memory in the memory 22, and are stored in a table form.

And when setting the microphone volume level, the signal input from the microphone to the ADC can be recognized in 256 steps from 0 to 255, but it is recognized in about 8 steps.

That is, by setting the level of the ADC to the microphone volume (mic_volume) (80,200) to recognize up to 80 to 200 of the ADC level to recognize the 15 levels in one step, the gain of the speaker can be adjusted to eight levels. .

That is, the gain (gain) level of the speaker may be adjusted using eight levels of microphone volume levels of (95, 110, 125, 140, 155, 170, 185, 200).

In order to prolong the waiting time, the terminal implements a sleep mode. Usually, in Korea, the slot cycle index (Slot cycle Index) of the sleep mode is set to "2" to 5.12 seconds (recently cut in half to 2.56 seconds). In each case, the terminal stays awake for 0.08 ~ 0.24 seconds to maintain the reception state of the terminal and check whether the terminal is received. Therefore, the mobile communication terminal can periodically measure the ambient noise level.

Accordingly, as described above, the terminal ambient noise signal measured during the waking time of the terminal may be input through the microphone as one of the microphone volume levels of the eight levels, and thus the degree of ambient noise of the terminal may be checked.

As described above, when the terminal wakes up, only the receiving end of the terminal wakes up. However, if the present invention is applied, the codec 24 and the vocoder 23 also wake up but do not consume much current, and thus do not affect the standby time of the terminal. Do not.                     

When the user likes the loud speaker sound of the terminal regardless of the ambient noise of the terminal, the function of the present invention may be turned off.

The data divided into eight steps as described above is converted into a speaker gain signal which is compared with each other by the central processing unit 21 and determines the speaker 26 output signal suitable for the data.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 2 and 3.

When the ambient noise signal input through the microphone 28 of the terminal is recognized as the microphone volume level of any one of the above eight microphone volume levels (301), the signal recognized as the microphone volume level (301) is the ADC circuit In step 302, a random analog signal is converted into a digital signal having a constant DC level, and then transmitted to an input port (ADC port) of the central processing unit 21 (303).

Then, the central processing unit 21 receives the ambient noise signal corresponding to any one of the eight stages received from the ADC circuit 29 303 and the speaker gain level of the eight stages previously input to the table in the memory 22. The data is compared 304 with each other.

Here, the ambient noise signal received from the ADC circuit 29 is a signal recognized at the microphone volume level corresponding to any one of the eight stages, and the data previously input to the memory table are the speaker gains of the eight stages. As the level data, it corresponds to the microphone volume level divided into eight levels with respect to the ambient noise signal.

As a result of the comparison 304 of the central processing unit 21, if the microphone volume level corresponding to the speaker gain level pre-inputted in the memory table and the microphone volume level corresponding to the received ambient noise signal are inconsistent with each other, they continue until they match each other. Compare 305, and if they match, the matched signal is passed back to the central processing unit 21 (306).

Then, the matched signal transmitted to the central processing unit 21 is modulated into an analog signal by the codec 25 through the vocoder 23 and then amplified to a predetermined level by the speaker amplifier 25 so that the speaker 26 is amplified. It is output (307) to the outside of the terminal through.

Therefore, when the signal of the ambient sound is heard in the microphone of the terminal, it outputs a low bell sound, and when the signal of the ambient noise is heard, it outputs a high bell sound, and when a variety of signals between quiet and loud are received, Output the bell sound.

The method to which the present invention is applied is differently applied according to the shape of the mobile communication terminal. For example, when the microphone of the terminal is exposed outside, the existing microphone is used as it is, but the terminal of the folder type has a microphone inside. As a result, the microphone recognition level may be slightly reduced.

In this case, the relationship between the noise level and the ringing volume is retested according to the degree of deterioration of the microphone recognition level, and more efficiently, by attaching one more microphone to the upper side exposed to the outside of the folder type terminal.
The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the accompanying drawings. In addition, the above-described embodiments may be configured by selectively combining all or part of the embodiments so that various modifications may be made.

As described above, according to the present invention, by using a microphone attached to the mobile communication terminal, the amount of ambient noise is recognized, and the ring volume output to the outside of the terminal can be adjusted according to the recognized amount of ambient noise. There is.
In addition, according to the present invention, since the bell volume can be adjusted according to the location of the terminal, when the terminal is located in a meeting place or a public place requiring solemnity, a small bell volume of a certain size or less is set and the terminal is located in a noisy place. This has the effect of setting a large bell volume over a certain amount.

Claims (4)

Periodically measuring an ambient noise signal input through a microphone in a communication standby state of a mobile communication terminal; Recognizing the measured ambient noise signal at a microphone volume level; Using an analog-to-digital conversion circuit, converting the ambient noise signal recognized at the microphone volume level from an analog signal form into a digital signal form, and transferring the ambient noise signal converted into the digital signal form to a central processing unit; Determining a location of the mobile communication terminal; Setting a bell volume level to correspond to the identified position; Using the central processing unit, comparing a microphone volume level of the transmitted ambient noise signal with a speaker gain level for each microphone volume level corresponding to the set bell volume level; And If the speaker gain level corresponding to the microphone volume level of the ambient noise signal is present as a result of the comparison, adjusting the ring tone to correspond to the speaker gain level corresponding to the microphone volume level of the ambient noise signal; The speaker gain level for each microphone volume level corresponding to the bell volume level is pre-stored in a memory and stored in the bell volume of the mobile communication terminal. The method of claim 1, wherein the recognition step, Dividing the microphone volume level into eight levels and recognizing the measured ambient noise signal as one of the eight levels. The method of claim 1, wherein the speaker gain level for each microphone volume level is Bell volume control method of the mobile communication terminal is divided into eight levels for each microphone volume level corresponding to the ambient noise signal input to the microphone.  The method of claim 1, wherein the speaker gain level for each microphone volume level is Bell volume control method of the mobile communication terminal is set differently depending on whether the microphone is exposed to the outside.

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