JP3048916B2 - Mobile phone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone,
In particular, the present invention relates to a mobile phone having a hands-free function.

[0002]

2. Description of the Related Art An example of a conventional telephone having a function of switching to a hands-free mode is disclosed in Japanese Patent Laid-Open No. 5-1992.
No. 89, "Cordless telephone" can be mentioned.

FIG. 4 is a block diagram showing an example of a conventional cordless telephone, which is equivalent to the one described in the above publication. FIG. 5 is a flowchart for explaining the operation in FIG.

Referring to FIG. 4, this conventional cordless telephone comprises a base unit 5 and a handset 4, and the handset 4 is a distance sensor 41 for measuring the distance to the user during a call and when operating various functions. A distance judging unit 42 for judging a distance based on the measurement result of the distance sensor 41, a radio unit 43 for receiving and demodulating the other party's voice signal from the master unit 5 through the antenna 44, an internal speaker 45, and an earpiece. (Receiver) and a control unit 47 for controlling switching with the receiver 46 and controlling the volume of the internal speaker 45.

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

When the distance sensor 41 emits infrared rays, receives reflected light from the user, and measures time during the time, sends time data obtained to the distance determining unit 42 (step 51).
The distance determination unit 42 analyzes the time data input at regular time intervals to determine the distance to the user (S5).
2).

That is, the distance determining section 42 first determines whether or not the previously measured distance matches the currently measured distance (S53). If there is no change in the distance (N in S53), the previous state is maintained. (S56).

If Y is determined in S53, that is, if there is a change between the distance measured last time and the distance measured this time, the distance judging section 42 judges whether it is possible to communicate with the earpiece 46 (S54). ).

If it is determined in step S 54 that the call can be made with the earpiece 46, the distance judging section 42 sends a switching instruction signal to the earpiece 46 to the control section 47.

The control unit 47 switches its internal connection based on the switching instruction signal so that the other party's voice transmitted from the wireless unit 43 is transmitted to the earpiece 46 (S55).

In S54, N, that is, the earpiece 46
If the telephone call is not possible, the distance determination unit 42 sends a switching instruction signal to the internal speaker 45 to the control unit 47.

The control unit 47 switches its internal connection based on the switching instruction signal so that the other party's voice transmitted from the wireless unit 43 is transmitted to the internal speaker 45 (S57).

Thereafter, the control section 47 determines whether or not the volume of the internal speaker 45 at that time is appropriate based on the distance data sent from the distance determination section 42 (S58).

If Y in S58, that is, if the volume of the internal speaker 45 is appropriate, the control unit 47 maintains the volume at that time.

In S58, N, that is, the internal speaker 4
When the volume of the speaker 5 is not appropriate, the controller 47 adjusts the volume of the internal speaker 45 to a volume corresponding to the distance (S
59).

[0016]

In this conventional cordless telephone, a certain distance is set between the user and the slave unit of the cordless telephone during a call, and the voice of the other party is set from the internal speaker. When the cordless telephone is moved closer to the user without directing the distance sensor of the cordless telephone from the user at the maximum volume, infrared rays emitted from the distance sensor always hit the user and reflect the reflected light. It is not always possible to receive light, and it is not possible to accurately measure the distance between the user and the slave unit. Therefore, the user will approach the user's ear while the volume is at the maximum, which may hurt the user's ear There is. Further, there is a problem that the user is uncomfortable even if the ear is not hurt.

An object of the present invention is to prevent the mobile phone from approaching the user's ear while the volume is at the maximum by judging that the user is really near the mobile phone by the touch sensor. To provide an improved mobile phone.

[0018]

According to the present invention, there is provided a distance sensor for measuring the time from emitting an infrared wave to receiving a reflected wave from a user during a call and during operation of various functions,
A distance determining unit that determines a distance to the user based on a measurement result of the distance sensor; a touch sensor that detects that the user's hand is touching the mobile phone; A sensor signal detecting unit for detecting an output signal from a wireless base station, a wireless unit for receiving and demodulating the other party's voice signal from the wireless base station, a receiver for receiving the other party's voice signal, and the user inputting voice. And a microphone sensitivity switching unit that adjusts the sensitivity of the microphone, and a control unit that controls all sequences in the mobile phone.

Further, the distance judging section analyzes time data inputted from the distance sensor at fixed time intervals, and the distance measured last time and the distance measured this time do not match , and the sensor signal detecting section detects the distance. When detecting the output signal from the touch sensor, the control unit checks whether the distance between the mobile phone and the user is within a set value by the user. After adjusting the output of the receiver according to the distance within a maximum volume range that does not hurt the user's ear and does not cause discomfort, the microphone sensitivity switching unit adjusts the sensitivity of the microphone. Is obtained.

Furthermore, the control unit the previous values respectively output and the sensitivity of the microphone of the receiver when the distance measured time and distances measured last time said distance determination section by analyzing the time data matches A mobile phone characterized by performing a maintenance process is obtained.

Further, when the sensor signal detecting section does not detect the output signal from the touch sensor, the control section adjusts the output of the receiver according to the distance and then switches the microphone sensitivity. Thereby, a process of adjusting the sensitivity of the microphone is performed, thereby obtaining a mobile phone.

When the distance between the mobile phone and the user is not within the set value by the user, the control unit outputs the output of the receiver to a maximum volume that does not hurt the user's ear. After adjusting the sensitivity, a process of adjusting the sensitivity of the microphone by the microphone sensitivity switching unit is performed, thereby obtaining a mobile phone.

[0023]

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

FIG. 1 is a block diagram showing an embodiment of a mobile phone according to the present invention. FIGS. 2A and 2B are front and side views of the mobile phone shown in FIG. 1, and FIG. 6 is a flowchart for explaining the operation of the mobile phone.

First, referring to FIG. 1, the mobile phone 1 of this embodiment measures a distance sensor 11 for measuring a time from emitting an infrared wave to receiving a reflected wave from a user during a call and when operating various functions. A distance determination unit 12 that determines the distance to the user based on the measurement result of the distance sensor 11, a touch sensor 13 that detects that the user is holding the mobile phone 1 in his hand, A sensor signal detecting unit 14 for detecting an output signal from the touch sensor 13, a wireless unit 18 for receiving and demodulating a partner voice signal from a wireless base station (not shown) through an antenna 19, and receiving a partner voice signal Receiver 15, a microphone 16 for inputting a user's voice, a microphone sensitivity switching unit 17 for adjusting the sensitivity of the microphone 16, and all sequences in the mobile phone 1. And a control unit 110 for control.

Referring to FIG. 2, in addition to the distance sensor 11, the receiver 15, and the microphone 16, a display 111 and operation buttons 11 are provided on the front of the main body of the portable telephone.
2 are provided, and touch sensors 13 are provided on both side surfaces of the main body of the mobile phone.

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

The distance sensor 11 measures time data from the emission of an infrared wave to the reception of a reflected wave, and inputs the measured data to the distance determination unit 12 (step S31).

The distance judging unit 12 judges the distance to the user by analyzing the time data input at regular time intervals (S32).

Next, it is checked whether or not the previously measured distance matches the currently measured distance, that is, whether or not this distance has changed (S33).

Then, when they do not match , that is, when the
If yes (Y in S33), it is checked whether the sensor signal obtained by the touch sensor 13 has been detected by the sensor signal detector 14 (S34). Also, when they match,
If no change has occurred ( N in S33 ), the control unit 11
0 is the output of the previous receiver 15 and the microphone 16
After performing the process of maintaining the sensitivity of (S35), the process returns to S31.

When Y is determined in S34, that is, when the sensor signal is detected by the touch sensor 13, the control unit 110 determines that the distance between the mobile phone 1 and the user is within a value set by the user (for example, 1 m). It is checked whether it is (S36).

The distance referred to here is the distance between the user and the mobile phone 1 in a state where the user reaches the hand holding the mobile phone 1 and points the distance sensor 11 toward the user. The set value within 1 m is merely an example, and may be set arbitrarily.

If N in S34, that is, if the sensor signal is not detected by the touch sensor 13, the control unit 1
10 adjusts the output of the receiver 15 according to the distance (S37), then adjusts the sensitivity of the microphone 16 by the microphone sensitivity switching unit 17 controlled by the control unit 110 (S38), and returns to S31.

If Y in S36, that is, if the distance is within 1 m, the control unit 110 determines the distance between the receiver 15 and the receiver 15 within the maximum volume range that does not hurt the user's ear and does not cause discomfort. Is adjusted (S39).

For example, if the output of the receiver 15 is set to five levels, the output of the receiver 15 switches every 1 m / 5 = 20 cm.

Then, proceeding to S38, the control section 110 adjusts the sensitivity of the microphone 16 by the microphone sensitivity switching section 17 (S38), and then returns to S31.

Further, if N in S36, that is, if the distance is not within 1 m, the control unit 110 adjusts the output of the receiver 15 to the maximum volume that does not hurt the user's ear (S31).
0). Thereafter, the process proceeds to S38, where the control unit 110 adjusts the sensitivity of the microphone 16 by the microphone sensitivity switching unit 17 (S38), and then returns to S31.

[0039]

As described above, the present invention provides a distance sensor for measuring the time from emitting an infrared wave to receiving a reflected wave from a user during a call and during operation of various functions, and a measurement of the distance sensor. A distance determining unit that determines a distance to the user based on the result, a touch sensor that detects that the user's hand is touching the mobile phone, and an output signal from the touch sensor. A sensor signal detection unit, a radio unit that receives and demodulates the other party's voice signal from the wireless base station, a receiver that receives the other party's voice signal, a microphone into which the user inputs voice, and the sensitivity of this microphone. By providing a microphone sensitivity switching unit for adjustment and a control unit for performing all sequence control in the mobile phone, the distance determination unit is input from the distance sensor at regular time intervals. When and sensor signal detection unit does not match the distance measured time and distances measured last time detects the output signal from the touch sensor is by analyzing the time data is, the control unit from the present mobile telephone and user Check whether the distance between is within the set value by the user, and if it is within this set value, according to the distance within the maximum volume range that does not hurt the user's ear and does not cause discomfort by adjusting the sensitivity of the microphone by the microphone sensitivity switching section after adjusting the output, further, the distance determination unit control unit when the distance measured time and distances measured last time matched by analyzing the time data of the receiver When the sensor signal detection unit does not detect the output signal from the touch sensor by performing the process of maintaining the output and the sensitivity of the microphone at the previous values, respectively. The control unit adjusts the output of the receiver according to the distance, and then performs the processing of adjusting the sensitivity of the microphone by the microphone sensitivity switching unit. Also, the distance between the mobile phone and the user is determined by the user. If it is not within the set value, the control unit adjusts the output of the receiver to the maximum volume that does not hurt the user's ear, and then performs the processing of adjusting the sensitivity of the microphone by the microphone sensitivity switching unit, so that the sensor of the touch sensor output is The detection of the signal can determine that the user is really near the mobile phone, so even if the user approaches the user without pointing the distance sensor of the mobile phone toward the user, the user's ear may be hurt. In addition, the volume can be automatically adjusted so as not to give the user discomfort, and the effect of improving the reliability of the mobile phone is obtained.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an embodiment of a mobile phone according to the present invention.

FIGS. 2A and 2B are a front view and a side view of the mobile phone shown in FIG.

FIG. 3 is a flowchart illustrating the operation of the mobile phone according to the embodiment.

FIG. 4 is a block diagram showing an example of a conventional cordless telephone.

FIG. 5 is a flowchart for explaining the operation in FIG. 4;

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 mobile phone 4 slave unit 5 master unit 11, 41 distance sensor 12, 42 distance determination unit 13 touch sensor 14 sensor signal detection unit 15 receiver 16 microphone 17 microphone sensitivity switching unit 18, 43 wireless unit 19, 44 antenna 45 internal speaker 46 Earpiece 47, 110 Control unit 111 Display 112 Operation button

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) H04M 1/60 H04M 1/725

Claims (4)

(57) [Claims] 1. A distance sensor for measuring a time from emitting an infrared wave to receiving a reflected wave from a user during a call and during operation of various functions, and a communication between the user and the user based on a measurement result of the distance sensor. A distance determination unit that determines a distance between the two,
A touch sensor that detects that the user's hand is touching the mobile phone, a sensor signal detection unit that detects an output signal from the touch sensor, and receives a partner voice signal from a wireless base station. Radio section for receiving and demodulating the voice signal, a receiver for receiving the voice signal of the other party, a microphone for inputting voice by the user, a microphone sensitivity switching section for adjusting the sensitivity of the microphone, and all sequences in the mobile phone. A control unit for performing control , wherein the distance determination is performed.
Unit is input from the distance sensor at regular time intervals
The distance measured last time by analyzing the distance data and the distance measured this time
The separation does not match and the sensor signal detection unit detects the touch
When the output signal from the sensor is detected, the control
The section indicates that the distance between the mobile phone and the user is
Check whether the value is within the set value by the
If it does not hurt the user's ear and cause no discomfort
Of the receiver according to the distance within the range of the maximum volume
After adjusting the output, the microphone sensitivity switching unit
A mobile phone characterized by adjusting the sensitivity of an microphone . 2. The distance determination unit analyzes the time data.
The distance measured last time and the distance measured this time match
When the control unit outputs the receiver and the microphone
The mobile phone according to claim 1, wherein processing is performed to maintain the sensitivity of each of the lophones at the previous value . 3. The touch sensor according to claim 1, wherein
If the output signal from the
The controller adjusted the output of the receiver according to the distance
Then, the sensitivity of the microphone is changed by the microphone sensitivity switching unit.
Mobile phone according to claim 1, characterized in that the process of adjusting the degree. 4. The distance between the mobile phone and the user
Is not within the set value by the user, the control unit
Mobile phone according to claim 1, characterized in that the process of adjusting the sensitivity of the microphone by the microphone sensitivity switching section after adjusting the output of the receiver to maximize the volume which does not damage the ear of the user .