JP2003115899A - Mobile radio terminal and speaking volume control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that speaking in a stable state is difficult since the fluctuation of received field level can not be confirmed during speaking since the received field level during speaking is displayed on a display part in a conventional mobile radio terminal equipped with an extensible transmitting/receiving antenna. SOLUTION: In an antenna housing state, a control part 15 compares the received field level during speaking detected by a received field level detecting part 14 which preset received field thresholds A, B and C for volume level and corresponding to the compared result, a volume control signal is supplied to a volume control part 16 so that the volume of voices from a loudspeaker 17 can be controlled. In the antenna housing state, the user of a portable telephone set can judge a change in the received field level during speaking from the received voice level from the loudspeaker 17 even without watching the indication on an LCD display part 19 and stable speaking is enabled by changing the position or angle of the portable telephone set so that the received volume level can become most satisfactory.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile radio terminal and a call volume control method, and more particularly to a mobile radio terminal such as a mobile phone having an extendable transmitting / receiving antenna and a call volume control method.

[0002]

2. Description of the Related Art In recent years, mobile phones, which are an example of mobile radio terminals, have become widespread indispensable for daily life.
Such a mobile phone is a transmission / reception antenna that is pulled out from the housing when in use and is contracted when not in use as a transmission / reception antenna in order to ensure a good call position when in use and portability when not in use. A retractable whip antenna or a rotary antenna that is housed inside the body is used.

[0003]

However, in the conventional mobile radio terminal equipped with the above-mentioned extendable transmission / reception antenna,
Calls when the antenna is stored are more likely to be affected by the human body because the antenna is closer to the head than when the antenna is extended,
There is a problem that a stable call is difficult because the received electric field level varies greatly depending on the angle and position of the mobile wireless terminal.

Therefore, when a telephone is talking with an antenna position detecting means provided in a weak electric field and with the antenna housed, a warning sound or vibration is given to the user that the antenna is housed. Conventionally, a mobile radio terminal has been proposed which notifies the user and prompts the user to pull out the antenna (Japanese Patent Laid-Open No. Hei 7-162356).

However, in this conventional mobile radio terminal, when notifying the user that the antenna is housed by a warning sound, the volume of the warning sound is set regardless of the received electric field level. The warning sound only tells that the received electric field level when the antenna is housed is lower than the set threshold value. As described above, a call when the antenna is housed is more likely to be affected by the human body because the antenna approaches the head than when the antenna is extended, and a sufficiently large received electric field level can be obtained depending on the angle and position of the mobile wireless terminal. Nevertheless, even if the mobile radio terminal happened to be at an inappropriate angle or position, so that a practically sufficient reception electric field level could not be obtained,
The conventional mobile radio terminal described above has a problem that it is inconvenient to use because the antenna must be always pulled out.

Further, in the conventional mobile radio terminal equipped with an extendable transmission / reception antenna, the received electric field level during a call is displayed on the display unit, so that it is not possible to confirm the fluctuation of the received electric field level during a call. There is also a problem that it is difficult to make a stable call.

The present invention has been made in view of the above points,
It is an object of the present invention to provide a mobile radio terminal and a call volume control method that can easily confirm a change in the received electric field level during a call.

Another object of the present invention is to provide a mobile radio terminal and a call volume control method capable of making a stable call even when the antenna is housed.

[0009]

In order to achieve the above object, a mobile radio terminal of the present invention is a mobile radio terminal provided with an extendable transmission / reception antenna, wherein the transmission / reception antenna is extended to the outside of the housing. A first detecting means for detecting whether it is stored in the housing or a stored state, a second detecting means for detecting a received electric field level during a call, and a sounding means for producing a reception volume. , A plurality of preset reception electric field level threshold values for different sound volume levels and a reception electric field level detected by the second detection means when the first detection means detects the stored state. And a control means for comparing, selecting one of a plurality of different sound volume levels according to the comparison result, and setting the received sound volume of the sounding means to the selected one sound volume level. Those were.

According to the present invention, when the transmission / reception antenna is in the housed state, the reception electric field level is in a range of a plurality of preset reception electric field level threshold values for different sound volume levels, or a maximum value. One of a plurality of different volume levels depending on the comparison result of whether it is equal to or higher than the reception electric field level threshold value for the volume level or is less than the minimum reception electric field level threshold value for the volume level. Since the level is selected and the reception volume is set to the selected volume level, the change in the reception electric field level can be determined from the reception volume level when the transmitting / receiving antenna is in the housed state.

Further, in order to achieve the above object, the mobile radio terminal of the present invention causes the control means to select a larger volume level among a plurality of different volume levels as the received electric field level increases, and generate a sound. It is characterized in that the listening volume of the means is set to the selected volume level. According to the present invention, it can be determined that the reception electric field level is higher as the reception sound volume is higher.

Further, in order to achieve the above object, the mobile radio terminal of the present invention presets the above-mentioned control means to the reception volume of the sounding means when the first detecting means detects the expanded state. It is characterized by setting a fixed volume level. According to the present invention, when the transmitting / receiving antenna is in the extended state, it is possible to talk at a fixed volume regardless of the received electric field level.

Further, in order to achieve the above object, the mobile radio terminal of the present invention is a variable radio terminal for variably setting at least one of a volume level reception electric field level threshold value and a plurality of different volume levels. It is characterized by further comprising means. In the present invention, the volume level can be set according to the preference of the user of the mobile wireless terminal.

Further, in order to achieve the above object, a call volume control method for a mobile radio terminal according to the present invention is a control method for controlling a call volume of a mobile radio terminal provided with an extendable transmission / reception antenna. A first step of detecting whether the antenna is in an extended state where the antenna is pulled out of the housing or a stored state where the antenna is stored in the housing; and a second step of detecting a received electric field level during a call. When the stored state is detected in the first step, among the preset plurality of mutually different volume level reception electric field level threshold values, the threshold values are from the highest threshold value to the lowest threshold value, or the lowest. The third step of comparing the received electric field level with the detected reception electric field level in order from the lower threshold to the higher one, and among a plurality of different volume levels according to the comparison result of the third step Select volume level, characterized in that it comprises a fourth step of setting the call volume to a volume level of the selection.

According to the present invention, when the transmission / reception antenna is in the housed state, the reception electric field level is in a range of a plurality of preset reception electric field level threshold values for different sound volume levels, or a maximum value. One of a plurality of different volume levels depending on the comparison result of whether it is equal to or higher than the reception electric field level threshold value for the volume level or is less than the minimum reception electric field level threshold value for the volume level. Since the level is selected and the reception volume is set to the selected volume level, the change in the reception electric field level can be determined from the reception volume level when the transmitting / receiving antenna is in the housed state.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a block diagram of an embodiment of a mobile radio terminal according to the present invention. The present embodiment shown in the figure is an example applied to a mobile phone.
Reference numeral 1 denotes a portion having an extendable transmission / reception antenna, which is connected to the radio unit 12 and also has an antenna extension / storage detection unit 13
It is connected to the. The radio unit 12 is connected to the reception electric field level detection unit 14 to detect the reception electric field level, and at the time of transmission, the transmission unit inputted through the control unit 15 is subjected to processing necessary for transmission such as modulation to cause the antenna unit 11 to perform the processing. While supplying and wirelessly transmitting from this, the signal received by the antenna unit 11 is subjected to receiving processing such as demodulation at the time of reception and supplied to the control unit 15.

The volume control unit 16 controls the audio signal input from the control unit 15 to a volume based on the control signal from the control unit 15 and supplies the audio signal to the speaker 17 to produce a sound. The memory 18 stores a program for causing the control unit 15 to perform a predetermined operation described later, a volume level, and the like,
In addition, data required for control is stored or read. The LCD display unit 19 is a display unit composed of a liquid crystal display element (LCD), and displays a display signal from the control unit 15. The key operation unit 20 is an operation unit operated by a user and includes various keys for performing various operations such as dial operation, and supplies a key input signal according to the pressed key to the control unit 15. To do.

The antenna extension / storage detection unit 13 detects whether the transmission / reception antenna of the antenna unit 11 is in an extended state where it is pulled out from the housing or the transmission / reception antenna is stored in the housing. Then, the detection signal is supplied to the control unit 15. When a detection signal of a logical value indicating “expansion” is input from the antenna expansion / storage detection unit 13, the control unit 15 does not adjust the volume regardless of the value of the received electric field level and is set in the memory 18 in advance. The volume control unit 16 is operated so that it operates at a predetermined volume level.
Send a volume control signal to.

On the other hand, when the control signal is input from the antenna extension / storage detection unit 13 as a detection signal having a logical value indicating "storage", the control unit 15 detects the reception electric field level detected by the reception electric field level detection unit 14 in advance. Compared with the three electric field level thresholds A, B and C for volume level,
According to the comparison result, a volume control signal is supplied to the volume control unit 16 to control the volume of the sound produced by the speaker 17.

That is, the control unit 15 controls the antenna extension / extension
When a detection signal having a logical value indicating "storage" is input from the storage detection unit 13, as shown in FIG. 2, the reception electric field level is the first reception electric field level threshold value A [d for volume level].
Bμ] or more (three antenna bars are displayed), the volume level is 4, and the reception electric field level is the second volume level reception electric field level threshold B [dBμ] or more and the above threshold A [d
If the value is less than Bμ] (two antenna bars are displayed), the volume level is 3, and the reception electric field level is equal to or higher than the reception electric field level threshold C [dBμ] for the third volume level.
A volume control signal to the volume control unit 16 such that the volume level is 2 when Bμ] is less than (1 antenna bar display), and the volume level is 1 when the received electric field level is less than C [dBμ] (0 antenna bar display). Supply with audio signal.

Here, as shown in FIG. 2, the reception electric field level has a relation of A [dBμ]> B [dBμ]> C [dBμ], and the volume level is level 4> level 3> level 2>.
There is a level 1 relationship. As a result, the mobile phone user can always make a stable call at the best reception level by simply moving the mobile phone to change the angle and position of the mobile phone so that the listening volume becomes louder. , It is possible to prevent sudden disconnection of the call, and the work of pulling out the antenna can be almost eliminated. Whether or not to perform the above-described operation of the present embodiment can be set by the user using the display of the LCD display unit 19 and the key operation unit 20.

Next, the operation of the embodiment of FIG. 1 will be described with reference to the flowchart of FIG. 3 and FIG.
After the start of the call (step 101), the control unit 15 determines whether the antenna of the mobile phone is currently in the extended state or the housed state based on the detection signal from the antenna extension / housed detector 13 (step 102). If the antenna is in the expanded state, a volume control signal is supplied to the volume control unit 16 to fix the volume level of the speaker 17 to a level preset by the user regardless of the received electric field level (step 1).
03).

On the other hand, when the control section 15 determines in step 102 that the antenna is in the housed state, it confirms the detected reception electric field level from the reception electric field level detection section 14 (step 104). The reception electric field level detected by the reception electric field level detection unit 14 is the reception electric field level of the channel (frequency) used by the mobile phone itself in the current call. However, during communication, transmission / reception operations are alternately performed in a time division manner, and the electric field level is detected at the time of reception.

Subsequently, the control unit 15 determines whether or not the detected reception electric field level is equal to or higher than the threshold value A [dBμ] (step 105), and if it is equal to or higher than the threshold value A [dBμ], the volume control is performed. A volume control signal is supplied to the section 16 to set the volume level of the speaker 17 to the maximum volume level 4 (step 106). If the volume level is less than the threshold value A [dBμ], then the threshold value B [dBμ] or more. Is determined (step 107). The control unit 15 performs step 1
When it is determined in 07 that the received electric field level is equal to or higher than the threshold value B [dBμ], a volume control signal is supplied to the volume control unit 16 to set the volume level of the speaker 17 to the second highest volume level 3. (Step 108) If it is less than the threshold value B [dBμ], the threshold value C [dB]
μ] or more is determined (step 109).

When it is determined in step 109 that the received electric field level is equal to or higher than the threshold value B [dBμ], the control unit 15 supplies a volume control signal to the volume control unit 16 to set the volume level of the speaker 17 to 3 levels. The second largest volume level 2 is set (step 110), and the threshold value C [dBμ] is set.
If less, the volume control signal is supplied to the volume control unit 16 so that the volume level of the speaker 17 becomes the minimum volume level 1
(Step 111).

When the setting of the sound volume level in any of the above steps 106, 108, 110 or 111 is completed, the control section 15 judges whether or not a call is in progress based on the signal from the wireless section 12 (step 112). If a call is in progress, the process returns to step 102. If no call is in progress, the process ends. That is, during a call, the above steps 102 to 1 are performed.
The process of 12 is repeated.

As a result, the user of the mobile phone determines the change in the received electric field level during a call according to the volume level of the received voice from the speaker 17 without looking at the display of the LCD display unit 19 when the antenna is in the housed state. It is possible,
By changing the position and angle of the mobile phone so that the listening volume level becomes the best, it is possible to make a stable call without the work of pulling out the antenna normally.

The present invention is not limited to the above-described embodiment. For example, the volume level receiving electric field threshold values A, B and C and the volume levels 4 to 4 for each threshold value.
The volume level 1 may be set arbitrarily by the user of the mobile phone. For example, in a strong electric field (three or more antenna bars are displayed), a change in the received electric field level of the strong electric field can be confirmed by setting the received electric field threshold value for volume level to be high. On the other hand, in a weak electric field, by setting the volume level reception electric field threshold value to a lower level,
It is possible to secure the best call position in a weak electric field.

Further, by setting the volume level to a high level, it is possible to make a call at the optimum volume level for each user of each mobile phone without being too small even in a weak electric field. Further, it is possible to set the volume level according to the preference of each user of the mobile phone. Further, the fixed volume level when the antenna is extended may be adjustable by the user.

Further, in the example of FIG. 3, when the antenna is stored,
The respective threshold values and the received electric field levels are compared in order from the highest volume level received electric field threshold value A to the lower one. The respective threshold values and the received electric field level may be sequentially compared toward each other.

[0031]

As described above, according to the present invention,
When the transmission / reception antenna is in the retracted state, the reception electric field level is within a range of a plurality of preset reception electric field level thresholds for different volume levels, or the maximum reception electric field level for the volume level. Depending on the comparison result, which is equal to or more than the threshold value or less than the reception electric field level threshold value for the minimum volume level, one of the plurality of different volume levels is selected, and the volume is received. By setting the volume to the selected volume level, when the transmitting / receiving antenna is in the retracted state, it is possible to determine the change in the reception field level based on the reception volume level. Even without looking, it is possible to make a stable call at the call position where the best received electric field level is always obtained.

Further, according to the present invention, even when the transmitting / receiving antenna is housed, it is possible to make a stable call at the call position where the best reception electric field level can be obtained. It can be avoided as much as possible and the usability can be improved.

[Brief description of drawings]

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

FIG. 2 is a diagram showing a relationship between a reception electric field level and a volume level in the present invention.

FIG. 3 is a flowchart for explaining the operation of the present invention.

[Explanation of symbols]

11 Antenna part 12 radio section 13 Antenna extension / storage detector 14 Received electric field level detector 15 Control unit 16 Volume control section 17 speakers 18 memory 19 LCD display 20 key operation part

Claims (6)

[Claims] 1. A mobile radio terminal equipped with an extendable transmission / reception antenna for detecting whether the transmission / reception antenna is in an extended state in which the transmission / reception antenna is pulled out of the housing or in a storage state in which the transmission / reception antenna is stored in the housing. First detection means, second detection means for detecting a received electric field level during a call, sounding means for producing a reception volume, and preset when the first detection means detects a housed state The received electric field level thresholds for different sound volume levels that are different from each other are compared with the received electric field level detected by the second detecting means, and among the plural different sound volume levels according to the comparison result. A mobile radio terminal, comprising: a control means for selecting one volume level and setting the reception volume of the sounding means to the selected one volume level. 2. The control means selects a larger volume level among the plurality of different volume levels as the received electric field level is higher, and sets the reception volume of the sounding means to the selected volume level. The mobile radio terminal according to claim 1, wherein: 3. The control means sets the reception sound volume of the sounding means to a preset fixed sound volume level when the expanded state is detected by the first detection means. 2. The mobile wireless terminal described in 2. 4. A variable means for arbitrarily variably setting at least one of the volume level received electric field level threshold value and the plurality of different volume levels. Mobile wireless terminal. 5. A control method for controlling a call volume of a mobile radio terminal equipped with an extendable transmission / reception antenna, wherein the transmission / reception antenna is extended outside a housing or housed inside a housing. A first step of detecting which one of the stored states is present, a second step of detecting the received electric field level during a call, and a preset step when the stored state is detected by the first step. Among a plurality of reception electric field level threshold values for different sound volume levels which are different from each other, the reception electric field level detected in order from the highest threshold value to the lower one, or from the lowest threshold value to the higher one in order. A third volume comparing step and one volume level among a plurality of different volume levels are selected according to the comparison result of the third step, and the call volume is selected as the one volume level. And a fourth step of setting the level. A method for controlling a call volume of a mobile wireless terminal, comprising: 6. The fourth step selects a larger volume level from the plurality of different volume levels as the received electric field level is higher, and sets the call volume to the selected volume level. The call volume control method for a mobile wireless terminal according to claim 5.