JP3699018B2 - Automatic volume control device for telephone - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic volume control apparatus for a telephone, and more particularly to an automatic volume control apparatus for a telephone that automatically controls a reception volume.
[0002]
[Prior art]
When using a mobile phone, use in a noisy environment is unavoidable. Therefore, a conventional mobile phone is provided with a function for adjusting the volume. However, it is cumbersome to adjust the volume during a call, and there is a drawback that the call must be interrupted due to frequent button presses and the like.
[0003]
[Problems to be solved by the invention]
The object of the present invention is to improve the above-mentioned disadvantages of the prior art, and in particular, when the receiving part is provided with a pressure sensor and a distance sensor, when the receiving volume is high, the receiving part is moved away, and the receiving volume is low. If this is the case, the volume of the handset is automatically controlled according to the human's natural action of trying to press the earpiece against the ear. A device is provided.
[0004]
[Means for Solving the Problems]
In order to achieve the above-described object, the present invention basically employs a technical configuration as described below.
[0005]
That is, the first aspect of the automatic volume control device for a telephone according to the present invention is as follows.
A pressure sensor for measuring the pressure when pressing the ear against the receiver; a distance sensor for measuring the distance between the receiver and the ear when the ear is moved away from the receiver; the pressure data measured by the pressure sensor; A volume control means for controlling the reception volume of the receiver based on the distance data measured by the distance sensor;
When the pressure sensor detects a pressure equal to or higher than a preset initial value of the pressure sensor , the volume control means increases the volume when the difference between the pressure measured by the pressure sensor and the initial value increases. When the distance sensor detects a distance that is equal to or greater than a preset initial value of the distance sensor , the volume control means is configured to control the distance measured by the distance sensor and the initial value of the distance sensor. The received sound volume is controlled so that the sound volume decreases as the difference from the value increases ;
In addition, the second aspect is
According to the difference between the distance measured by the distance sensor and the initial value of the distance sensor, a frequency characteristic control means for controlling the frequency characteristic of the receiver is provided,
In the third aspect,
An initial value setting means for setting an initial value of the pressure sensor and an initial value of the distance sensor is provided.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
An automatic volume control device for a telephone according to the present invention is as follows.
A pressure sensor for measuring the pressure when pressing the ear against the receiver; a distance sensor for measuring the distance between the receiver and the ear when the ear is moved away from the receiver; the pressure data measured by the pressure sensor; It is characterized by comprising volume control means for controlling the reception volume of the handset based on the distance data measured by the distance sensor.
[0007]
【Example】
Hereinafter, a specific example of an automatic volume control device for a telephone according to the present invention will be described in detail with reference to the drawings.
(First specific example)
FIG. 1 is a diagram showing the structure of a telephone according to the present invention, FIG. 2 is a block diagram showing the configuration of an automatic volume control device of the present invention, and FIGS. 3 and 4 show the operation of the automatic volume control device of the present invention. It is a flowchart to explain, these figures,
A pressure sensor 4 for measuring a pressure when pressing the ear against the receiver 6; a distance sensor 5 for measuring a distance between the receiver 6 and the ear when the ear is moved away from the receiver 6; and the pressure sensor 4 An automatic volume control device for a telephone, characterized by comprising volume control means 27 for controlling the reception volume of the receiver 6 based on the measured pressure data and the distance data measured by the distance sensor 5, is shown.
Further, when the pressure sensor 4 detects a pressure equal to or higher than a preset initial value, the volume control means 27 increases the volume according to the difference between the pressure measured by the pressure sensor 4 and the initial value. When the distance sensor 5 detects a distance greater than or equal to a preset initial value, the volume control means 27 determines whether the distance measured by the distance sensor 5 is different from the initial value. An automatic volume control device for a telephone is characterized in that the reception volume is controlled so that the volume is reduced in response to an initial value for pressure detection and an initial value for distance detection. There is shown an automatic volume control device for a telephone, characterized in that an initial value setting means (step 4) for setting is provided.
[0008]
Hereinafter, the first specific example of the present invention will be described in more detail.
[0009]
FIG. 1 is an exploded perspective view of a mobile phone.
[0010]
In FIG. 1, 1 is a front case of a mobile phone, 2 is a rear case combined with the front case 1, and 3 is a device substrate stored in a case composed of a front case 1 and a rear case 2. 4 is provided on the device substrate 3 or on the front housing 1, and a pressure sensor 5 is provided on the device substrate 3 or on the front housing 1 for detecting the pressure when the ear is pressed against the receiver. A distance sensor using infrared rays for detecting the distance between the receiver and the ear, 6 is a receiver or receiver that is assembled on the apparatus substrate 3 or on the front housing 1, and 7 is incorporated in the front housing 1. An operation unit such as a keyboard for operating the device substrate 3, 8 a display unit such as a display assembled on the device substrate 3, 9 a microphone for transmission provided on the device substrate 3 or the front housing 1, and 10 Rear housing 2 The assembled antenna, 11 is a cover for the pressure sensor 4 provided in the front casing 1, 12 is a sound hole for the distance sensor 5 provided in the cover 11, 13 is a sound receiving hole in the front casing 1, 14 Is a sound hole for transmission of the front housing 1.
[0011]
FIG. 2 is a block diagram of the mobile phone of the present invention.
[0012]
In FIG. 2, reference numeral 21 denotes a CPU that controls the entire mobile phone. The CPU 21 performs various arithmetic processes related to a telephone call, and also performs a process such as an instruction to switch the volume of a ringtone / voice. The operation unit 7 is connected to the CPU 21 and is operated by a user when making a call, inputting a key when starting / ending a call, and setting a function. The display unit 8 is connected to the CPU 21 and displays a selection screen at the time of function setting, a function setting state, and the like. The pressure / distance detection circuit 22 is connected to the CPU 21, the pressure sensor 4, and the distance sensor 5, and notifies the CPU 21 of pressure data and distance data detected by the pressure sensor 4 and the distance sensor 5.
[0013]
The wireless unit 23 is connected to the CPU 21 and performs communication with a base station omitted in the figure. The antenna 10 is connected to the radio unit 23. The DSP 24 is connected to the CPU 21 and the radio unit 23, and performs processing such as reception signal characteristics and radio circuit connection with the base station, speech channel switching, audio signal processing between the radio unit 23, the receiver 6, and the microphone 9. I do.
[0014]
The memory 25 is connected to the CPU 21 and the DSP 24, and stores melody data used for the ring tone, processing data such as a calculation result in the CPU 21, and various function setting data. The A / D / D / A converter 26 is connected to the DSP 24, and converts a digital signal of voice / music output from the DSP 24 into an analog signal. The volume switching control unit 27 is connected to the CPU 21 and performs volume switching control of the receiver 6 in accordance with a control signal output from the CPU 21. Accordingly, the volume switching control unit 27 performs volume control of the analog signal output from the A / D / D / A converter 26 and outputs the sound having the controlled volume to the receiver 6 via the reception amplifier 28. It is configured as follows.
[0015]
Next, the operation of the present invention will be described with reference to FIGS.
[0016]
FIG. 3 is a flowchart for setting the automatic volume adjustment function of the present invention.
[0017]
It is assumed that the reception volume (output volume of the receiver 6) of the mobile phone in the standby state in step 1 is set in advance. In step 2, a specific key on the operation unit 7 is pressed to select whether or not to set the automatic reception volume adjustment function of the present invention. When the automatic reception volume control function is not set (when it is off), the standby state of Step 6 is set.
[0018]
In step 2, when the automatic reception volume adjustment function is set (when turned on), the CPU 21 stores “automatic reception volume adjustment function ON” data indicating that the automatic reception volume adjustment function is set in the memory 25. . In step 3, it is determined whether or not there is an initial value of the distance / pressure data (the volume changes depending on the amount of change from the initial value, so an initial value must be set). The specific key is pressed to instruct the memory 25 to store the initial values of the pressure data and the distance data. If there is an initial value, the process branches to step 5. When the receiver 6 is used, the DSP 24 processes the signal, and when the received voice is output from the receiver 6, the pressure sensor 4 and the distance are detected via the pressure / distance detection circuit 22. The sensor 5 is instructed to be activated, and the standby state of Step 6 is set.
[0019]
Next, the operation of the mobile phone during a call will be described using the flowchart of FIG.
[0020]
When the mobile phone enters the talking state (step 21) from the standby state (step 6 in FIG. 3), the CPU 21 stores in the data stored in the memory 25 whether or not the automatic reception volume adjustment function is in the operating state. Based on the determination (step 22). If the result of determination is “volume adjustment function off”, a call is started at a preset reception volume (step 23). If it is determined in step 22 that “volume adjustment function is ON”, both the pressure sensor 4 and the distance sensor 5 are activated, and the initial value of the pressure sensor 4 and the initial value of the distance sensor 5 are set in advance. A call is made at the received volume based on the received call volume (step 24). In this state, it is assumed that volume data based on the amount of change in pressure / distance from the initial value is set in advance.
[0021]
During the call in step 25, when the received sound volume is low and the ear is strongly pressed against the receiver 6, the pressure sensor 4 detects a pressure increase from the initial value (step 26), and the pressure / distance detection circuit 22 is activated. Then, the CPU 21 instructs the volume switching control unit 27 to control the reception volume to be large. The received sound volume is increased, and the received sound volume is fixed when the strong pressing is stopped (step 27).
[0022]
When the reception volume is high (step 28), when the receiver 6 is moved away from the ear, the distance sensor 5 detects the distance (step 29), and the CPU 21 controls the volume via the pressure / distance detection circuit 22. The switching control unit 27 is instructed to reduce the received sound volume. As a result, the received sound volume is decreased, and the received sound volume is fixed when it is stopped away (step 30).
[0023]
If the received volume is not low at step 25 (does not press the ears strongly), and if the received volume is not high at steps 28 (does not keep the ears away), the preset received volume is not reached. You can make calls without any changes.
[0024]
When the call ends and the end key of the operation unit 7 is pressed (step 31), the first standby state is established.
(Second specific example)
FIG. 5 is a block diagram showing a second specific example of the present invention.
[0025]
When the distance between the ear and the receiver is increased, the low frequency volume tends to deteriorate due to the characteristics of the receiver. Therefore, the pressure sensor 4 and the distance sensor 5 are used, and a filter 29 for controlling the frequency characteristics of the receiver 6 is provided in front of the reception amplifier 28 to emphasize the low frequency characteristics as the distance between the receiver and the ear increases. It is possible to perform control such as switching to a filter, emphasize low-frequency characteristics as the ear leaves the receiver, and control so that the volume and sound quality do not change even when the ear is away from the receiver.
[0026]
【The invention's effect】
Since the automatic volume control device for a telephone according to the present invention is configured as described above, the volume that has been conventionally adjusted by pressing or turning a switch or button, by pressing the ear to the receiver, By releasing the ear from the receiver, the reception volume can be automatically adjusted, and a call with an optimum volume can be made.
[0027]
In addition, by storing the distance between the handset and the ear of the user and the pressure in advance, the volume can be adjusted according to the user. It becomes possible.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a telephone according to the present invention.
FIG. 2 is a block diagram of a first specific example of an automatic volume control device for a telephone according to the present invention.
FIG. 3 is a flowchart showing the operation of the present invention.
FIG. 4 is a flowchart showing the operation of the present invention.
FIG. 5 is a block diagram of a second specific example of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Front housing | casing 2 Rear housing | casing 3 Apparatus substrate 4 Pressure sensor 5 Distance sensor 6 Receiver 7 Operation part 8 Display part 9 Transmitting microphone 10 Antenna 11 Pressure sensor cover 12 Distance sensor sound hole 13 Receiving sound hole 14 Transmitting sound hole

Claims (3)

A pressure sensor for measuring the pressure when pressing the ear against the receiver; a distance sensor for measuring the distance between the receiver and the ear when the ear is moved away from the receiver; the pressure data measured by the pressure sensor; A volume control means for controlling the reception volume of the receiver based on the distance data measured by the distance sensor;
When the pressure sensor detects a pressure equal to or higher than a preset initial value of the pressure sensor , the volume control means increases the volume when the difference between the pressure measured by the pressure sensor and the initial value increases. When the distance sensor detects a distance greater than or equal to a preset initial value of the distance sensor , the volume control means is configured to control the distance measured by the distance sensor and the initial value of the distance sensor. An automatic volume control apparatus for a telephone, characterized in that the received volume is controlled so that the volume decreases as the difference from the value increases . 2. The automatic sound volume of a telephone according to claim 1, further comprising frequency characteristic control means for controlling a frequency characteristic of the handset according to a difference between a distance measured by the distance sensor and an initial value of the distance sensor. Adjustment device. 3. The automatic volume control device for a telephone according to claim 1, further comprising initial value setting means for setting an initial value of the pressure sensor and an initial value of the distance sensor .

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