KR100360615B1 - apparatus for detecting call signal of a mobile wireless phone - Google Patents

Abstract

PURPOSE: An apparatus for sensing termination in a mobile wireless telephone is provided to automatically block a reproduced audio signal, inform a user that a call is terminated, and perform a telephone call with a caller through an earphone when a termination signal is sensed in situation in which a user listens to the audio signal reproduced from an audio reproducing device by using the earphone. CONSTITUTION: The first interfacing unit(52) connects to an earphone jack of a mobile wireless telephone(30), interfaces a user voice signal amplified through an amplifying unit(57) to the mobile wireless telephone(30), and interfaces a voice signal of a caller inputted from the mobile wireless telephone(30) to a switching unit(56) when being converted into a cellular phone mode. The second interfacing unit(51) connects to an earphone jack of an audio reproducing device(40), and interfaces an audio signal reproduced from the audio reproducing device(40) to the switching unit(56). The third interfacing unit(58) interfaces the audio signal reproduced from the audio reproducing device(40) to stereo earphones in an audio reproducing mode, and interfaces a voice signal inputted from one earphone between the stereo earphones to the amplifying unit(57) through the switching unit(56) in the cellular phone mode. The third interfacing unit(58) outputs the voice signal of the caller inputted from the mobile wireless telephone(30) through the switching unit(56) to the other earphone.

Description

Apparatus for detecting call signal of a mobile wireless phone}

The present invention relates to an incoming call detection device of a mobile wireless telephone, and in particular, when an incoming call is detected in a situation where a user is listening to audio played by an audio reproducing apparatus using earphones, The present invention relates to an incoming detection device of a mobile wireless telephone which notifies a user that a call has been received and switches a mode to make a phone call with a caller through the earphone.

At present, development of various low-cost, high-quality and high-performance mobile phones has been progressing significantly according to the development of electronic / semiconductor technology and communication technology, consumer demand, and business competition between mobile phone manufacturers and mobile operators. .

The mobile communication market is rapidly expanding with the development of infrastructure and core technologies. As a result, the demand for mobile wireless telephones is increasing day by day, and is owned by most people. Here, mobile wireless telephones are largely classified into a personal communication service (PCS), a city phone, and a cellular phone.

Hereinafter, a general mobile wireless telephone will be described with reference to FIG. 1.

FIG. 1 is a schematic block diagram of a typical mobile wireless telephone. Referring to FIG. 1, the receiver 10 receives an incoming signal of a mobile wireless telephone through an antenna ANT, and a receiver ( Incoming signal detection unit 20 for detecting whether the incoming signal received in 10) is the incoming signal of the mobile radio telephone, and the vibration mode and the bell to inform the user of the mobile radio telephone when the incoming signal is received A mode selector 30 capable of selecting a mode is configured.

In addition, the storage unit 50 storing a plurality of different audio data corresponding to the bell mode, and the signal output from the incoming signal detection unit 2 is detected as the incoming signal of the mobile radio telephone, the mode selection unit If the mode selected in the 30 is a bell mode, it outputs and outputs any one audio data stored in the storage unit 50, and outputs a vibration generation control signal when the mode selected in the mode selector 30 is a vibration mode. It consists of the control part 40.

In addition, the vibration generating unit 70 for generating an audio sound corresponding to the audio data output from the control unit 40.

Let us explain the operation of the incoming and outgoing call of the general mobile radiotelephone having such a configuration.

First, when the other party, that is, the caller makes a call and the call signal is transmitted through the base station, the signal is received by the receiving unit 10 through the antenna ANT of the mobile radio telephone, and then outputs to the incoming signal detecting unit 20. .

The incoming signal detecting unit 20 detects whether the call signal (frequency) output from the receiving unit 10 is an incoming signal corresponding to the corresponding mobile radio telephone, and then, when the received call signal is an incoming signal of the corresponding mobile radio telephone, high ( High signal is transmitted to the controller 40, and when it is not an incoming signal of the mobile radio telephone, a low signal is applied to the controller 40. In this case, the incoming signal is detected by detecting an ID on the carrier frequency received from the receiver 10 and comparing the detected ID with an ID unique to the mobile radio telephone. When the signal output from the incoming signal detecting unit 20 is a low signal, it is determined that the signal is not the incoming signal of the mobile radio telephone and does not perform any operation. In contrast, when the signal output from the incoming signal detecting unit 20 is high. Is determined to be an incoming signal for the mobile radio telephone. At this time, the control unit 40 determines whether the mode selected by the mode selection unit 30 is a vibration mode or a bell mode. If the mode selected by the user is the vibration mode, the control unit 40 generates the vibration unit 70. By generating a vibration by applying a vibration generating control signal to the), it informs the user that the call is received. Here, the vibration generating unit 70 is a vibration motor.

However, when the mode selected by the user is not the vibration mode but the bell mode, the controller 40 reads one audio data (melody sound) selected by the user from among a plurality of audio data stored in the storage 50 and generates a sound generator ( 60), the user can hear the selected melody sound and know that the call is received. Here, the sound generator 60 includes an amplifier and a speaker, and the controller 40 includes an A / D converter for converting audio data read from the storage unit 500 into an analog signal.

In addition, the mode selection unit 30 has a mode selection function for allowing the user to select a mode arbitrarily, and an audio selection for selecting any one melody sound among a plurality of audio data (melodies) stored in the storage unit 50. It is equipped with a function at the same time. All these selections are done in software.

After the user switches to the bell mode or the vibrate mode, the mobile cordless phone is stored in a bag or clothes, and while listening to an audio signal reproduced from an audio reproducing apparatus such as a cassette, a CD player, or a radio through an earphone. When a call is received, there is a problem that the user cannot easily confirm that the call is received according to the reproduced audio signal.

In order to solve this problem, the user switches the mobile cordless phone to vibrate mode and then, while the phone is attached to the body, wears earphones and listens to music played on the audio playback device. Even if this occurs, the user has a problem that the user does not easily feel the incoming vibration of the phone because the nerve is concentrated on the audio signal (music, etc.) to be reproduced. Therefore, the user has an inconvenience that the user must always carry the phone in hand after switching the phone to the vibration mode.

Accordingly, the present invention has been made to solve the above-mentioned problems according to the prior art, an object of the present invention is to detect the incoming call signal in the situation where the user is listening to the audio played by the audio playback device using the earphone If so, it provides a call detection device for a mobile wireless telephone that automatically cuts off the audio signal to be played back to inform the user that the call was received, and to switch the mode to make a phone call with the caller through the earphone.

Another object of the present invention is to use one earphone of the R / L (Right / Left) earphone as the original function of the earphone when the telephone call with the caller in the state of switching from the audio playback mode to the mobile cordless phone mode, the other The earphone of the present invention is to provide an incoming call detection device of a mobile radio telephone for signal processing to be used as a microphone.

A feature of an incoming call detection device of a mobile wireless telephone according to the present invention for achieving the above object is connected to an earphone jack of a mobile wireless telephone and converts a user voice signal amplified by the amplification unit when switching to a mobile phone mode. A first interfacing unit comprising a plug for interfacing the voice signal of the caller input from the mobile wireless telephone to the switching unit, and an audio signal connected to the earphone jack of the audio reproducing apparatus and reproduced by the audio reproducing apparatus to the switching unit. A second interfacing unit comprising a plug for interfacing with the two earphone plugs, the audio signal being reproduced from the audio reproducing apparatus in the audio reproducing mode is interfaced with the earphones, and in one of the stereo earphones in the mobile phone mode. Input voice The third interface interface comprises a jack for interfacing the call to the amplification unit through the switching unit and outputting a caller's voice signal input through the switching unit from the wireless mobile wireless telephone to the other earphone.

1 is a schematic block diagram of a typical mobile wireless telephone;

2 is a perspective view showing a state in which a call detection device of a mobile wireless telephone according to the present invention is connected to a mobile wireless telephone, an audio reproducing apparatus, and an earphone;

Figure 3 is a block diagram showing the detailed configuration of the incoming call detection apparatus of the mobile radio telephone according to the present invention.

<Explanation of symbols for main parts of drawing>

30: mobile wireless telephone 40: audio playback device

50: telephone call detection device 51, 52, 58: interfacing unit

53: detection unit 54: malfunction prevention unit

55: mode switching control unit 56: switching unit

57: amplification part SW1: malfunction prevention switch

SW2: mode forced switch

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the incoming call detection apparatus of the mobile radio telephone according to the present invention will be described in detail.

2 is a perspective view showing a state in which the incoming detection device of the mobile wireless telephone according to the present invention is connected to the mobile wireless telephone, an audio playback device, and earphones, and FIG. 3 is a detailed view of the incoming detection device of the mobile wireless telephone according to the present invention. As a block diagram showing the configuration, it will be described.

First, as shown in FIG. 2, the audio reproducing apparatus is connected to the mobile wireless telephone 30, the audio reproducing apparatus 40 for reproducing an audio signal, and the mobile wireless telephone 30 and the audio reproducing apparatus 40, respectively. The audio signal reproduced at 40 is interfaced to be output to the earphone 60, and while the audio signal reproduced at the audio reproducing apparatus 40 is listened through the earphone 60, the incoming call signal is detected by detecting the incoming call signal. When detected, it is composed of a call reception detection device 50 to switch the audio playback mode to the telephone transmission and reception mode to turn on the mobile wireless phone 30 to perform a phone call with the caller through the earphone (60).

In addition, the phone call detection device 50 has a plurality of plugs (51, 52) to be connected to the earphone jack 31 of the mobile radio telephone 30 and the earphone jack 41 of the audio playback device 40, respectively; It is also provided, and is provided with the earphone jack 58 so that the plug 60a of the earphone 60 can be inserted. At this time, the mobile radio telephone 30 and the audio reproducing apparatus 40 use the existing earphone jacks 31 and 41 as they are. The audio player 40 may be a cassette tape record, a CD player, a radio, or the like.

This will be described in detail with reference to Figure 3 the configuration of the incoming call detection device 50 is configured.

When the incoming signal of the mobile wireless telephone 30 is detected through the detector 53 and the detector 53, which detects an incoming signal of the mobile wireless telephone 30 through the antenna ANT, a mode according to the detected signal. A mode switching control unit 55 for outputting a switching control signal, a switching unit 56 for switching from an audio reproduction mode to a cellular phone mode according to the mode switching control signal output from the mode switching control unit 55, and an incoming signal is detected. According to the incoming call detection signal output from the detection unit 53 is composed of a display unit (LED4) for displaying so that the user can easily know that the incoming call.

In addition, the display unit (LED2, LED3) for displaying the mode currently switched by the mode switching control unit 55 so that the user can easily know, and the switching unit 56 for the audio signal reproduced in the audio playback device 40 Interface the second interface unit 51 for interfacing with the earphone 60 to the audio signal reproduced from the audio reproducing apparatus 40 in the audio reproducing mode, and to at least one earphone of the earphone 60 in the mobile phone mode. The third interfacing unit 58 is configured to interface the voice signal inputted from the mobile station to the switching unit 56 and to output the voice signal of the caller received through the mobile wireless telephone 30 to another earphone.

In addition, the amplification unit 57 for amplifying and outputting a predetermined level of a user's voice signal input through the third interfacing 58 from one of the stereo earphone 60, and the user amplified by the amplification unit 57 And a first interfacing unit 52 for interfacing the voice signal to the mobile radio telephone 30 and for interfacing the caller's voice signal input from the mobile radio telephone 30 to the switching unit 56. Here, one of the stereo earphones 60 and the amplifier 57 for amplifying a predetermined level of the user's voice signal input through the earphones to perform a single microphone function.

In addition, when the telephone call is completed in the mobile phone mode or when the user wants to stop the call, a forced mode switching switch (SW2) for inputting a switching signal to the mode switching controller 55 for forcibly switching the mobile phone mode to the audio playback mode. And a switching signal for continuously maintaining a mobile phone mode so that a telephone call can be stabilized in a state where an incoming signal is detected from the detector 53 and switched from an audio play mode to a mobile phone mode. The malfunction prevention switch SW1 and the malfunction prevention switch SW1 are turned on as the sensor is turned on, so that the mode switching control unit 55 continuously maintains the switching unit 56 in the cellular phone mode. It is composed of a transistor (Tr1) for blocking the output of the detection signal output from the).

It will be described the operation of the incoming call detection device of the mobile radio telephone according to the present invention having such a configuration.

First, the first, second and interfacing units 51 and 52 of the call reception detecting device 50 are connected to the earphone jack 31 of the mobile radio telephone 30 and the earphone jack 41 of the audio reproducing apparatus 40. And the power of the mobile radio telephone 30 and the audio reproducing apparatus 40 in a state where the plug 60a of the earphone 60 is connected to the third interface 58 of the incoming call detecting apparatus 50. When the user inserts the earphone 60 into the ear and controls the reproducing operation of the audio reproducing apparatus 40 remotely by the manual or remote control 70 while the power is turned on, the record inserted into the audio reproducing apparatus 40 is recorded. The audio recorded on the medium is played back. Here, the first and second interfacing units 51 and 52 are plugs connected to the earphone jacks mounted on the mobile radio telephone 30 and the audio reproducing apparatus 40, and the third interfacing unit 58 is the earphone 60 It is an earphone jack configured to be inserted into the plug (60a) of.

As described above, when the reproducing operation of the audio reproducing apparatus 40 is performed, the reproduced audio signal is input to the switching unit 56 through the second interfacing unit 51. In this case, the switching unit 56 is always switched to the audio reproduction mode, that is, the output line of the second interfacing unit 51 unless a control signal for mode switching is applied through the mode switching controller 55. Accordingly, the audio signal reproduced by the audio reproducing apparatus 40 is output to the earphone 60 through the second interfacing unit 51, the switching unit 56 and the third interfacing unit 58, and reproduced by the user. To listen to the signal. At this time, the sensing unit 53 continuously detects whether an incoming signal of the mobile radio telephone 30 is received.

As a result of the detection, when an incoming signal of the mobile radio telephone 30 is detected through the sensing unit 53 in the audio reproduction mode, the sensing unit 53 applies the sensing signal to the collector terminal of the transistor Tr1 and simultaneously displays the display unit ( By driving LED4), the user is notified that the call has been received. At this time, since the malfunction prevention unit 54 continuously applies the base voltage to the base terminal of the transistor Tr1, the transistor Tr1 is turned on so that a current is supplied to the mode switching controller 55 through the emitter terminal. . Therefore, the mode switching control unit 55 switches the switching unit 56 from the audio reproduction mode to the mobile phone mode. That is, by switching the switching unit 56 from the output line of the second interfacing unit 51 to the first interfacing unit 52 and the amplifying unit 57, the switching from the audio reproduction mode to the cellular phone mode is performed.

In addition, the mode switching control unit 55 switches the mode of the switching unit 56 to the mobile phone mode and simultaneously blocks driving of the display unit LED1 and drives the display unit LED1 to allow the user to change the current mode to the audio reproduction mode. To confirm that you have switched to mobile phone mode. That is, the display unit LED1 indicates that the current mode is the audio reproduction mode, and the display unit LED1 indicates that the mobile phone mode is present.

As such, when the mode of the switching unit 56 is switched from the audio reproduction mode to the cellular phone mode, the voice signal of the caller input through the mobile wireless telephone 30 is transmitted to the first interfacing unit 52 and the switching unit 56. And one earphone 60 of the stereo earphone 60 through the third interfacing unit 58. Thus, the receiver can hear the caller's voice through the earphone. When the voice signal of the user is input to one of the earphones 60 of the stereo earphones 60, the input voice signal of the user (receiver) is amplified by the third interfacing unit 58 and the switching unit 56. Applied to the unit 57.

The amplifier 57 amplifies the user's voice signal to a level that can be heard by the caller, and is then applied to the mobile radio telephone 52 through the first interface 52. Accordingly, the mobile radio telephone 30 transmits a voice signal of an applied user through an antenna, thereby making a telephone call. That is, the R (Right) or L (Left) earphones of the stereo earphone 60 can be used as the original earphone to listen to the caller's voice signal, and the other earphone 60 receives the user's voice signal. Is to use the microphone to type. In order to use the earphone 60 as a microphone, a very weak voice signal input by the user is amplified by a predetermined level through the amplifier 57 to perform a function of a microphone.

As such, when the reception sensitivity during the phone call, that is, the detection signal of the detection unit 53 is very weak, when the user turns on the malfunction prevention switch SW1 to prevent the switching from the cellular phone mode to the audio playback mode, the malfunction prevention unit (54) cuts off the base power applied to the base terminal of the transistor Tr1, that is, turns off the transistor Tr1 to block the output of the sensing unit 53 from being input to the mode switching controller 55. At the same time, the display unit LED3 is driven so that the user can easily confirm that the malfunction prevention mode is operating.

Therefore, the mode switching control unit 55 controls the switching unit 56 so that the cellular phone mode is continuously maintained until the mode forced switching switch SW2 is turned on.

In addition, when a telephone call is completed during a telephone call or a user is forced to stop the telephone call and the user turns on the mode forced switch SW2, the mode switch controller 55 may forcibly switch according to the switching signal applied. 56) is switched from the cellular phone mode to the audio playback mode and at the same time the drive of the display unit LED2 is cut off, and the display unit LED3 is driven to indicate that the current mode has been switched from the mobile phone mode to the audio playback mode. In addition, by turning off the malfunction prevention switch SW1 and releasing the malfunction prevention mode, when an incoming signal is always detected from the detection unit 53, the mode is automatically changed through the mode switching controller 55 in the audio playback mode. Allows you to switch to cell phone mode. At this time, when the malfunction prevention switch SW1 is turned off and the malfunction prevention mode is released, the malfunction prevention unit 54 turns off the display unit LED1 so that the user can easily confirm that the malfunction prevention mode has been released.

Therefore, an audio reproduction mode operation in which the audio signal reproduced by the audio reproducing apparatus 40 is reproduced to the earphone 60 through the second interface 51, the switching unit 56, and the third interfacing unit 58 is performed. You lose. At this time, all of the earphone 60 is to perform the original function of the earphone. That is, using one of the earphones of the microphone 60 as a microphone is possible only in the mobile phone mode.

As a result, the incoming detection device of the mobile radio telephone according to the present invention is connected to the mobile radio telephone 30, the audio reproducing apparatus 40, and the stereo earphone 60 to automatically switch the audio reproduction mode to the cellular phone mode when the incoming call is received. The user can easily recognize that the call is received while listening to the audio signal played by the audio reproducing apparatus 40 through the earphone 60, and through one of the stereo earphones 60 in the mobile phone mode. It allows you to listen to the caller's voice and input your voice using another earphone as a microphone.

In addition, the incoming call detection device of the mobile radio telephone according to the present invention can also be used in connection with a pager (aka pager). That is, when the call signal is detected, the audio reproduction mode is switched to the call reception mode (pager mode) to block the audio to be played, thereby informing the user that the call signal has been received.

An incoming call detection device of a mobile radio telephone according to the present invention as described above connects a mobile radio phone and an audio playback device to a separate call reception detection device, and connects an earphone to the call reception detection device so that a user uses an audio playback device. When the incoming call signal is detected while listening to audio, the audio playback mode is automatically switched to the cellular phone mode so that a call can be made with the caller. Thus, the user can easily confirm that the incoming call is received during audio listening.

In addition, by using one of the stereo earphones as a microphone instead of a separate microphone during a telephone call, the structure is simplified, and there is an effect that can provide an inexpensive incoming call detection device.

Claims (4)

A detection unit for detecting whether an incoming signal of the mobile wireless telephone is received through the antenna, a mode switching control unit for outputting a mode switching control signal according to the detection signal when an incoming signal of the mobile wireless telephone is detected through the detection unit; Switching unit for switching the audio playback mode to the mobile phone mode according to the mode switching control signal output from the control unit, and a plurality of LEDs indicating that the incoming call according to the incoming call signal, and the mode is displayed by the mode switching control unit A display unit, an amplifying unit for amplifying a user's voice signal input through the switching unit from one of the stereo earphones through a switching unit in a state where the switching unit is switched to the mobile phone mode, and outputting the amplified unit to the mobile wireless phone; Switching signal to forcibly switch to playback mode before mode A mobile wireless telephone having a forced mode switching switch provided to the control unit and a malfunction prevention circuit unit for blocking a detection signal output from the detection unit so that the switching unit can continuously maintain the mobile phone mode in the state of switching from the audio playback mode to the mobile phone mode. To A plug which is connected to the earphone jack of the mobile cordless phone and interfaces the user voice signal amplified by the amplification unit to the mobile cordless phone when the mobile phone mode is switched to, and the voice signal of the caller input from the mobile cordless phone to the switching unit. A first interface consisting of: A second interfacing unit which is connected to an earphone jack of the audio reproducing apparatus and comprises a plug for interfacing an audio signal reproduced by the audio reproducing apparatus to a switching unit; Connected to the two earphone plugs, the audio signal reproduced from the audio reproducing apparatus is interfaced to the earphones in the audio reproducing mode, and the voice signal input from one of the stereo earphones in the mobile phone mode is interfaced to the amplifying unit through the switching unit. And a third interfacing unit comprising a jack for outputting a voice signal of the caller input through the switching unit to the other earphone in the wireless mobile wireless telephone. delete delete The apparatus of claim 1, wherein the malfunction prevention circuit unit comprises: a malfunction prevention switch configured to provide a forced switching signal for continuously maintaining the switching unit in the cellular phone mode when the cellular phone mode is switched to the cellular phone mode; Incoming detection of the mobile wireless telephone, characterized in that the transistor is turned off according to the control of the malfunction prevention switch as the malfunction prevention switch is turned on, and thus the mode switching controller blocks the output signal of the detector so that the switching unit can be continuously maintained in the cellular phone mode. Device.