JP2003152843A - Hands-free phone for mobile phone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hands-free phone for a mobile phone by which the hands of a user will be caught by a cable at driving of an automobile or the like, the user can make a speech and driving in a free state of both hands and its own information will not be recognized by other people. SOLUTION: This invention provides the hands-free phone for a mobile phone comprising a master unit 1 in wired connection to the mobile phone 3 and a slave unit 2 in wireless connection to the master unit, when power is supplied to all circuits of the mobile phone, the master unit and the slave unit, in the case that the voltage of the power supply is a prescribed voltage or higher and the master unit detects a microphone current outputted from the mobile phone in a transmission/reception state, the master unit reaches a speech operating state. When the master unit reaches the speech operating state, the master unit wirelessly transmits the voice signal from the mobile phone to the slave unit, wirelessly transmits the voice signal from the slave unit to the mobile phone, and the slave unit has a microphone 216 picking up voice and a speaker 215 for outputting the voice.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hands-free phone for a mobile phone, which can be used hands-free (free hands).

[0002]

2. Description of the Related Art In recent years, mobile phones have been often used in vehicles such as automobiles. However, when used in automobiles, both hands are used for steering wheel operation, and use of mobile phones is dangerous. There was a problem. FIG. 10 is a configuration diagram showing a conventional hands-free phone for a mobile phone for freeing both hands. In FIG. 10, 3 is a mobile phone, 4 is a microphone connected to the mobile phone 3 via the plug 6, 5 is an earphone connected to the mobile phone 3 via the microphone 4 and the plug 6, and 302 is the plug 6 combined. The earphone / microphone jack 303 is an antenna of the mobile phone 3. The microphone 4, the earphone 5, and the connector 6 form a hands-free phone for a mobile phone.

A schematic operation of the hands-free phone for a mobile phone configured as described above will be described. Figure 10
In the above, the microphone 4 and the earphone 5 can be mounted on a person's head or ear, and the voice is transmitted from the microphone 4 to the mobile phone 3 via the earphone microphone jack 302, and the voice from the mobile phone 3 is transmitted. It is sent out as sound from the earphone 5 via the earphone microphone jack 302. As described above, by mounting the microphone 4 and the earphone 5 on a person's head or ear, both hands are in a free state (hands-free state). Therefore, it is possible to avoid a dangerous state when using a mobile phone in an automobile or the like. It can be resolved.

[0004]

However, in the conventional hands-free phone for a mobile phone, the microphone 4 and the earphone 5 are connected to the mobile phone 3, and the cable between the microphone 4, the earphone 5 and the connector 6 is used. Has a problem that it may get caught in the hand, which may hinder driving, and when the microphone 4 and the earphone 5 are attached to the head of the person, There was a problem that the sound was leaked and others could know their information.

In order to meet these requirements, the present invention allows the user to talk and drive with both hands completely free from the cables being caught in the hands when driving an automobile, etc. It is an object to provide a hands-free phone for mobile phones whose information is never known.

[0006]

In order to solve the above problems, a hands-free phone for a mobile phone according to the present invention comprises a master unit wiredly connected to the mobile phone and a slave unit wirelessly connected to the master unit. In a mobile phone handsfree phone, when power is supplied to all circuits in the mobile phone, the parent device, and the child device, the parent device is in a transmission / reception state when the power supply voltage is equal to or higher than a predetermined voltage. When the microphone current output from the mobile phone is detected, the call becomes active. When the call becomes active, the voice signal from the mobile phone is wirelessly transmitted to the mobile device and the voice signal from the mobile device is wirelessly transmitted to the mobile phone. The mobile device is configured to have a microphone for inputting voice and a speaker for outputting voice. As a result, it is possible to obtain a hands-free phone for a mobile phone, in which a cable is not caught in a hand when driving an automobile or the like and a call and a driving can be performed with both hands completely free.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A hands-free phone for a mobile phone according to claim 1 of the present invention is for a mobile phone, which comprises a master unit wiredly connected to the mobile phone and a slave unit wirelessly connected to the master unit. If it is a hands-free phone and power is supplied to all circuits in the mobile phone, the master unit, and the slave unit, the master unit uses the mobile phone whose power supply voltage is equal to or higher than the predetermined voltage and is in the transmitting / receiving state. When the output microphone current is detected, the call becomes active. When the call becomes active, the voice signal from the mobile phone is wirelessly transmitted to the handset and the voice signal from the handset is wirelessly transmitted to the handset. The slave unit has a microphone for inputting voice and a speaker for outputting voice. With this configuration, the parent device and the child device wiredly connected to the mobile phone can be independently arranged at arbitrary positions regardless of each other. For example, if the child device can be mounted on the driver, Since the required cable is no longer required, the cable is not caught in the hands when driving an automobile or the like, and there is an effect that it is possible to talk and drive with both hands completely free.

According to a second aspect of the present invention, there is provided a hands-free phone for a mobile phone according to the first aspect, wherein the master unit is a microphone that detects a microphone current output from the mobile phone in a transmitting / receiving state. A current detector, a master transmitter that wirelessly transmits the voice signal from the mobile phone to the slave, a master receiver that wirelessly transmits the voice signal from the slave to the mobile phone, and master control that controls the whole Unit and a parent device rechargeable battery that always supplies power to the parent device control unit. With this configuration, the master unit can reliably detect the microphone current in the microphone current detection unit and enter the call operation state, so that the master unit transmission unit reliably transmits the voice signal from the mobile phone to the speaker of the slave unit. In addition, the master receiver has an effect of reliably wirelessly transmitting the audio signal from the microphone of the slave to the mobile phone.

A hands-free phone for a mobile phone according to a third aspect is the hands-free phone for a mobile phone according to the first or second aspect, in which the slave unit has a microphone for inputting voice and a speaker for outputting voice. When the supply voltage of the power supply is equal to or higher than the predetermined voltage, the electromagnetic wave radiated from the mobile phone in the transmission / reception state is detected, and the modulated wave signal level from the master unit is equal to or higher than the predetermined level, the call operation state is established and the call When in the operating state, the modulated wave signal including the voice signal from the master unit is received and the modulated wave signal including the voice signal is transmitted to the master unit. With this configuration, the parent device and the child device wiredly connected to the mobile phone can be independently arranged at arbitrary positions regardless of each other. For example, if the child device can be mounted on the driver,
Since the cable that was required in the past is no longer needed, the cable will not get caught in the hands when driving a car, etc., and you can talk and drive using the microphone and speaker with both hands completely free. Have an effect.

According to a fourth aspect of the present invention, there is provided a handsfree phone for a mobile phone according to the third aspect, wherein the handset has an electromagnetic wave detecting section for detecting an electromagnetic wave emitted from the mobile phone. Always supply power to the slave unit transmitter that sends the audio signal from the microphone to the master unit, the slave unit receiver that receives the audio signal from the master unit, the slave unit controller that controls the entire unit, and the slave unit controller. It is intended to have a cordless handset rechargeable battery to be supplied. With this configuration, the slave unit can reliably detect the electromagnetic wave emitted from the mobile phone by the electromagnetic wave detection unit and enter the call operation state. Therefore, the slave unit transmission unit carries the voice signal from the microphone through the master unit. This has the effect that wireless transmission can be reliably performed to the telephone, and that the slave receiver can reliably transmit the audio signal from the mobile telephone via the master to the speaker.

According to a fifth aspect of the present invention, there is provided a hands-free phone for a mobile phone according to the third or fourth aspect, wherein the handset has a disk portion in which a microphone and a speaker are housed, and a disk. And a mounting portion for mounting the portion to the ear-shaped portion. With this configuration, since the disk portion in which the speaker is housed can be attached to the ear-like portion, only the person wearing the speaker can hear the sound from the speaker, and the other person's information is not known. Have an effect.

A hands-free phone for a mobile phone according to a sixth aspect of the present invention is the hands-free phone for a mobile phone according to any one of the second to fifth aspects, wherein the master unit control section turns on / off a power switch. When determining and determining that the power switch is on, the power switch determining means for starting the operation, the setting means for setting the transmission / reception frequency, and the wake-up state in which power is supplied to all circuits Display means for displaying the wake-up state, battery voltage determination means for determining whether or not the output voltage of the master unit rechargeable battery is below a predetermined voltage, and microphone current for detecting the microphone current output from the mobile phone in the transmitting / receiving state. The detection means, the call operation means for performing the call operation, and the time determination means for shifting to the sleep state when the interruption of the microphone current continues for a predetermined time or more. When, in which was to have a plug insertion detection means for detecting the insertion state of the charging plug, and a charging processing means for performing charge processing in a state that charge plug insertion. With this configuration, the wake-up status can be displayed to inform the user, and
When the microphone current flows, the microphone current detection means can detect the microphone current to ensure that the master unit is in the call operation state.In addition, when the interruption of the microphone current continues for a predetermined time or longer, the master unit is in the sleep state. Therefore, there is an effect that the life of the base unit rechargeable battery can be extended.

A mobile phone hands-free phone according to a seventh aspect of the present invention is the mobile phone hands-free phone according to any one of the fourth to sixth aspects, in which the handset controller turns on / off a power switch. When determining and determining that the power switch is on, the power switch determining means for starting the operation, the setting means for setting the transmission / reception frequency, and the wake-up state in which power is supplied to all circuits Display means for displaying a wake-up state, battery voltage determination means for determining whether or not the output voltage of the slave unit rechargeable battery is less than or equal to a predetermined voltage, and electromagnetic wave detection means for detecting electromagnetic waves emitted from the mobile phone in the transmitting / receiving state. A call operation means for performing a call operation, a time determination means for shifting to a sleep state when the electromagnetic wave is interrupted for a predetermined time or longer, and a charging process. A plug insertion detection means for detecting a grayed merge state, in which it was decided to have a charging processing means for performing charge processing in a state that charge plug insertion. With this configuration, the wake-up state can be displayed and notified to the user, and when electromagnetic waves from the mobile phone are generated, the electromagnetic wave detection means can detect the electromagnetic waves and reliably bring the base unit into the call operation state. In addition, when the interruption of the electromagnetic wave continues for a predetermined time or longer, the slave unit is put into the sleep state, so that the life of the slave unit rechargeable battery can be extended.

According to an eighth aspect of the present invention, there is provided a mobile phone hands-free phone according to the sixth aspect, wherein the charging processing means determines whether or not charging of the master unit rechargeable battery is completed. Charge determining means, a charge switch control means for turning on the charge switch when it is determined that the charge is not completed, and a charge switch control means for turning off the charge switch when it is determined that the charge is completed, and whether or not the charge plug is removed. And a plug determination unit that terminates the charging process when the state where the charging plug is removed continues for a predetermined time or longer. With this configuration, it is possible to monitor the state of charge of the parent device rechargeable battery and to accurately charge the parent device rechargeable battery.

According to a ninth aspect of the present invention, there is provided a mobile phone hands-free phone according to the seventh aspect, wherein the charging processing means determines whether or not charging of the slave unit rechargeable battery is completed. Charge determining means, a charge switch control means for turning on the charge switch when it is determined that the charge is not completed, and a charge switch control means for turning off the charge switch when it is determined that the charge is completed, and whether or not the charge plug is removed. And a plug determination unit that terminates the charging process when the state where the charging plug is removed continues for a predetermined time or longer. With this configuration, it is possible to monitor the state of charge of the child device rechargeable battery and to accurately charge the child device rechargeable battery.

FIG. 1 shows an embodiment of the present invention.
~ It demonstrates using FIG. (Embodiment 1) FIG. 1 is a block diagram showing a hands-free phone for a mobile phone according to Embodiment 1 of the present invention. In FIG. 1, a mobile phone 3, an earphone microphone jack 3
02 and the antenna 303 are the same as those in FIG. 10, so the same reference numerals are given and the description thereof is omitted. Reference numeral 1 is a master unit connected to the mobile phone 3 via a plug 114, 2 is a slave unit that communicates with the master unit 1 wirelessly such as infrared rays, and 107 and 207 are antennas for transmitting and receiving radio signals such as infrared signals. .

An outline of the operation of the hands-free phone for a mobile phone configured as described above will be described. In FIG. 1, the cordless handset 2 can be worn on the head or ear of a person, and sound is output from a microphone 216 of the cordless handset 2 described later to the cordless handset 1
Is transmitted to the mobile phone 3 via the mobile phone 3, and the voice from the mobile phone 3 is transmitted as sound from the earphone 215 of the slave 2 via the master 1. Then, the microphone 216 and the earphone 21
The handset that stores 5 and 5 can be attached to the ear-like part that is shaped like a human ear, so that both hands are free (hands-free state). It is possible to eliminate a dangerous state when the mobile phone 3 is used.

FIG. 2 is a block diagram showing the hands-free phone for mobile phones of FIG. In FIG. 2, the base unit 1,
Handset 2, mobile phone 3, antennas 107, 207, 30
3, plug 114, earphone microphone jack 302,
Since it is the same as FIG. 1, the same reference numerals are given and the description thereof is omitted. Reference numeral 101 is a control unit that controls the entire base unit (base unit control unit), 102 is a transmission unit (base unit transmission unit) that wirelessly transmits an audio signal from the mobile phone 3 to the handset unit 2, and 103 is a unit from the handset unit 2. A receiving unit (master unit receiving unit) that wirelessly transmits an audio signal to the mobile phone 3, 104 is a microphone current detecting unit that detects a microphone current that flows when the mobile phone 3 is connected to the mobile phone 3, and 105.
Is a power switch (main unit power switch), 106 is a demultiplexer (parent unit demultiplexer) for separating a transmission signal and a reception signal, 10
Reference numeral 8 denotes an attenuating unit (attenuating unit attenuating unit) for attenuating the audio signal level output from the receiving unit 103, 109 an LED (parent device LED) as a display, and 110 an external charger (not shown). A charging jack (parent device charging jack) to which a charging plug is coupled to supply a charging current, 111 is a charging switch (parent device charging switch) whose on / off is controlled by the control unit 101, and 112 is a secondary battery. Reference numeral 113 denotes a rechargeable battery of a certain master unit, and reference numeral 113 denotes a stabilizing power source (main unit stabilizing power source) that stabilizes the output battery voltage of the rechargeable battery 112.

Reference numeral 201 denotes a control unit (slave unit control unit) for controlling the entire slave unit, 202 denotes a transmitting unit (slave unit transmitting unit) for wirelessly transmitting an audio signal from the microphone 216 to the master unit 1, 203
Is a receiving unit (slave unit receiving unit) that outputs the audio signal from the base unit 1 to the speaker 215, 204 is an electromagnetic wave detecting unit that detects the radiated radio waves from the mobile phone 3, 205 is a power switch (slave unit power switch), Reference numeral 206 is a demultiplexer that separates a transmission signal and a reception signal (slave unit demultiplexer), and 208 is a receiving unit
3, an attenuator (attenuator attenuator) for attenuating the audio signal level output from the device 3, 209 is an LED (child device LED) as a display, and 210 is a charging current supplied from an external charger (not shown). To this end, a charging jack (slave unit charging jack) to which a charging plug is coupled, a reference numeral 211 is a charging switch (slave unit charging switch) whose on / off is controlled by the control unit 201, and a reference numeral 212 is a secondary battery which is a secondary unit Rechargeable battery,
Reference numeral 213 is a stabilizing power source (slave unit stabilizing power source) that stabilizes the output battery voltage of the rechargeable battery 212, and 214 is the attenuator 208.
An amplifier (AMP) that amplifies the audio signal from the microphone 215, a speaker that outputs the audio signal as audio, a microphone 216 that converts the audio into an audio signal, and a LPF (217) that low-pass filters the audio signal from the microphone 216. It is a low pass filter). Furthermore, 301 is a control unit for controlling the entire mobile phone.

With respect to the hands-free phone for a portable telephone configured and connected as described above, its schematic operation will be described below. First, the master device 1 will be described. When the power switch 105 is turned on and the on signal b is input to the master unit control unit 101, the control unit 101 starts operating and turns on the stabilized power supply 113 by the on / off control signal e that controls the stabilized power supply 113. , Set to the state where power is supplied to all circuits (wakeup state). Next, the control unit 10
1 outputs a transmission / reception frequency setting signal c to the transmission unit 102 and sets the local oscillation signal frequency of the transmission unit 102 to a predetermined frequency. The local signal d is supplied to the receiving unit 103. In a state where the plug 114 of the base unit 1 is coupled to the earphone microphone jack 302 of the mobile phone 3, the mobile phone 3 is in a radio wave reception state of receiving a radio wave from a base station (not shown) or an off-hook state for transmission. Then, a current of about 3.7 μA is input to the microphone current detection unit 104 and electromagnetic waves are radiated from the mobile phone 3. 3.7 above
An input current of about μA is 1 m at the microphone current detection unit 104.
It is amplified to about A and detected, and is input to the control unit 101 as a microphone current detection signal a. The voice signal f from the mobile phone 3 is modulated by the transmission signal 102 by the local oscillation signal d, and is transmitted to the handset 2 via the duplexer 106 and the antenna 107. The modulated audio signal from the handset 2 is transmitted to the antenna 10
7. The signal is demodulated by the receiving unit 103 via the demultiplexer 106, and output as the audio signal g to the mobile phone 3 via the attenuating unit 108. The charging switch 111 is the charging jack 110.
When the charging current is supplied to, the charging current is detected and the charging current detection signal h is output to the control unit 101. When the charging current detection signal h is input, the control unit 101 turns off the stabilized power supply 113. The charging switch 111 also outputs a battery voltage detection signal i indicating the battery voltage of the rechargeable battery 112. The control unit 101 controls the charging of the rechargeable battery 112 by turning on / off the charging switch 111 according to the battery charging control signal j.

The operation of the child device 2 is also the same. That is, when the power switch 205 is turned on and the ON signal b is input to the control unit 201 of the child device, the control unit 201 starts operation and the stabilized power supply 213 is controlled by the ON / OFF control signal e that controls the stabilized power supply 213. To turn on the power to all circuits (wake-up state). Next, the control unit 201 outputs the transmission / reception frequency setting signal c to the transmission unit 202 and sets the local oscillation signal frequency of the transmission unit 202 to a predetermined frequency. The local signal d is supplied to the receiving unit 203. Further, when the mobile phone 3 is in a radio wave reception state for receiving radio waves from a base station or in an off-hook state for transmission, the mobile phone 3 initially transmits a strong radio wave (electromagnetic wave) in order to search for an appropriate radio field intensity. , Then, gradually reduce the radio field strength. The strong electromagnetic wave in the early stage is detected by the electromagnetic wave detection unit 20.
4 detects, the control unit 201 outputs an electromagnetic wave detection signal k.
Output to. The audio signal f from the microphone 216 is transmitted to the transmitter 2
In 02, it is modulated by the local oscillation signal d and transmitted to the master unit 1 via the duplexer 206 and the antenna 207. The modulated voice signal from the base unit 1 is demodulated by the receiving unit 203 via the antenna 207 and the demultiplexer 206, and is output as the voice signal g by the attenuating unit 20.
8 and the amplifier 214 to output to the speaker 215. The amplifier 214 has its amplification degree controlled by the volume control signal m from the control unit 201, and outputs the buzzer signal amplified by the buzzer signal n to the speaker 215. When the charging current is supplied to the charging jack 210, the charging switch 211 detects the charging current and outputs a charging current detection signal h to the control unit 201. When the charging current detection signal h is input, the control unit 201 turns off the stabilized power supply 213.
The charging switch 211 also outputs a battery voltage detection signal i indicating the battery voltage of the rechargeable battery 212. Control unit 20
1 controls the charging of the rechargeable battery 212 by turning on / off the charging switch 211 by the battery charging control signal j.

FIG. 3 is an external view showing the external appearance of the base unit 1 and the mobile phone 3. In FIG. 3, a base unit 1, a mobile phone 3,
The power switch 105, the LED 109, the plug 114, the earphone microphone jack 302, and the antenna 303 are the same as those in FIG. As shown in FIG. 3, the base unit 1 is formed in a disc shape and can be stored in any place.

FIG. 4 is an external view showing the external appearance of the slave unit 2.
In FIG. 4, the child device 2, the speaker 215, and the microphone 216.
2 is the same as that of FIG. 2, and 218 is a disk portion of the child device 2,
Reference numeral 219 is a mounting portion for mounting the slave unit 2 to a human ear (ear-shaped portion), 220 is a fixed portion of the mounting portion 219, and 221 is a movable portion of the mounting portion 219. The movable part 221 has a shaft 222.
It is rotatable around and is biased by a spring in the clockwise direction when viewed from above in the drawing. By applying the movable portion 221 of the slave unit 2 having such a configuration to a person's ear (ear-shaped portion), the slave unit 2 can be fixed to the ear. In this case, since the movable portion 221 is biased by the spring, the cordless handset 2 does not easily come off from the ear.

FIG. 5 shows a control unit (master unit control unit) 10 of the master unit 1.
It is a functional block diagram which shows the function implementation means in 1.
In FIG. 5, reference numeral 11 is a power switch determination means for determining whether the power switch 105 is on or off and starting operation when it is determined that the power switch 105 is on,
Reference numeral 12 is a setting means for setting the transmission / reception frequency in the transmission portion 102 and the reception portion 103, 13 is a display means for displaying the wake-up state when the power is supplied to all the circuits, and 14 is a parent Battery voltage determining means for determining whether or not the output voltage of the machine rechargeable battery 112 is below a predetermined voltage, 15 is a microphone current detecting means for detecting a microphone current output from the mobile phone 3 in a transmitting / receiving state, 1
6 is a call operation means for performing a call operation, 17 is a plug insertion detection means for detecting the insertion state of the charging plug, 18
Is a time determination means for shifting to a sleep state when the interruption of the microphone current continues for a predetermined time or more, 19 is a charging processing means for performing a charging process when the charging plug is in a plugged state, and 191 is a completion of charging of the parent device rechargeable battery 112. A charge determination means for determining whether or not it is, a charge switch control means 192 for turning on the charge switch 111 when it is determined that the charge is not completed, and a charge switch control means 193 for turning off the charge switch 111 when it is determined that the charge is completed. It is a plug determination unit that determines whether or not the charging plug is removed, and ends the charging process when the state where the charging plug is removed continues for a predetermined time or longer.

FIG. 6 shows a control unit (slave unit control unit) 20 of the slave unit 2.
It is a functional block diagram which shows the function implementation means in 1.
In FIG. 6, reference numeral 21 is a power switch determination means for determining whether the power switch 205 is on or off and starting operation when it is determined that the power switch 205 is on.
22 is a setting means for setting the transmission / reception frequency of the transmission section 202 and the reception section 203; 23 is a buzzer sounding means for generating a buzzer signal n to cause the speaker 215 to sound a buzzer; 24 is a wake where power is supplied to all circuits. A display means for displaying the wake-up state when the up state is reached, 25 is a battery voltage determination means for determining whether or not the output voltage of the slave unit rechargeable battery 212 is a predetermined voltage or less, and 26 is the mobile phone 3 in the transmission / reception state. An electromagnetic wave detecting means for detecting an electromagnetic wave emitted from the device, 27 is a call operation means for performing a call operation, 2
8 is a modulated wave signal (modulated voice signal) radiated from the base unit 1.
To receive the modulated wave signal level to detect the modulated wave signal level, 29 is a plug insertion detection means for detecting the insertion state of the charging plug, and 30 is a sleep state when the interruption of the electromagnetic wave continues for a predetermined time or longer. A time determination means for controlling, 31 is a volume adjusting means for adjusting the volume output from the speaker 215, 32 is a charging processing means for performing a charging process when the charging plug is in a plugged state, and 321 is a charging completion of the slave unit rechargeable battery 212 The charging determination means 322 for determining whether or not the charging switch 211 turns on when it is determined that the charging is not completed, and turns off the charging switch 211 when it is determined that the charging is completed. It is determined whether the charging plug has been removed and the state where the charging plug has been removed has continued for a specified time or longer. The case is plug judging means for terminating the charging process.

The operation of the hands-free phone for mobile phones having the above-described structure and function will be described with reference to FIGS.
Will be described in detail. 7 is a flowchart showing the operation of the master unit 1, FIG. 8 is a flowchart showing the operation of the slave unit 2, and FIG. 9 is a flowchart showing the charging control operation of the master unit 1 and the slave unit 2.

First, the operation of the base unit 1 will be described with reference to FIG. When the power switch 105 is turned on, the ON signal b is input to the control unit 101, and the control unit 101 starts operating,
The power switch determination means 11 turns on the stabilized power supply 113 by the on / off control signal e, and starts supplying power to all circuits (S1). That is, the main | base station 1 is made into a wake-up state. Next, the setting means 12 outputs the transmission / reception frequency setting signal c to the transmission unit 102 in order to set the transmission / reception frequency (local oscillation frequency) in the transmission unit 102 and the reception unit 103 to a predetermined frequency (S2). The transmission unit 102 sets a transmission / reception frequency, that is, a local oscillation frequency based on the transmission / reception frequency setting signal c, and outputs the local oscillation signal d of this frequency to the reception unit 103. Next, the display means 13 displays that it is in the wake-up state (S3). This is done, for example, by turning the LED on for 0.1 seconds and off for 1.5 seconds.

Next, the battery voltage determination means 14 determines whether or not the battery voltage is below a predetermined voltage (for example, 2.85V) (S4). If it is above the predetermined voltage, the microphone current detection means 15 is next. Determines whether or not there is a microphone current based on the microphone current detection signal a (S5), and the microphone current detection means 15
When it is determined that the microphone current is present, the power switch determination means 11 next determines whether or not the power switch 105 is turned on (S6), and the plug insertion detection means 17 determines whether or not the charging plug is inserted. It is detected (S7). When the power switch 105 is not on and the charging plug is not inserted, the call operation means 16 shifts the base unit 1 to the call operation state (S8).

When it is determined in step S5 that there is no microphone current, the time determination means 18 next determines whether the interruption of the microphone current is 20 seconds (predetermined time) or more (S1).
0) If the interruption of the microphone current is 20 seconds or less, the microphone current is detected again. When the interruption of the microphone current is 20 seconds or less, the process proceeds to step S13 described later. When it is determined in step S6 that the power switch 105 is on, the time determination unit 18 determines that the power switch 105 is on.
7 is terminated for 2 seconds or more (S11), the processing of FIG. 7 is terminated if it is 2 seconds or more, and if it is 2 seconds or less, then the time determination means 18 causes the power switch 105 Is on for 0.5 to 2 seconds, and if 0.5 to 2 seconds and 2 seconds, the sleep state of steps S13 to S16 is entered and the microphone current in the microphone current detecting means 15 is detected. Determination (S13), whether the power switch 105 in the power switch determination means 11 is on (S14), and whether the plug insertion detection means 17 has detected the insertion of the charging plug (S15). )I do. When the microphone current is not detected, the power switch 105 remains off, and the insertion of the charging plug is not detected, the power switch determination means 11 turns off the stabilized power supply 113 (S16). If the microphone current is detected or the power switch 105 is on, the process proceeds to step S1, and if the insertion of the charging plug is detected, the process proceeds to step S9.

Step S9 is a charging process to be performed when the insertion of the charging plug is detected in step S7. This charging process will be described later with reference to FIG. When the power switch 105 is on for 0.5 seconds or less in step S12, the process proceeds to step S8.

Next, the operation of the handset 2 will be described with reference to FIG. When the power switch 205 is turned on, the ON signal b is input to the control unit 201, and the control unit 201 starts its operation.
The power switch determination means 21 turns on the stabilized power supply 213 in response to the on / off control signal e, and starts supplying power to all circuits (S21). That is, the slave unit 2 is put into the wakeup state. Next, the setting unit 22 outputs the transmission / reception frequency setting signal c to the transmission unit 202 in order to set the transmission / reception frequency (local oscillation frequency) in the transmission unit 202 and the reception unit 203 to the predetermined frequency (S22). The transmission unit 202 sets a transmission / reception frequency, that is, a local oscillation frequency based on the transmission / reception frequency setting signal c, and the local oscillation signal d of this frequency is received by the reception unit 203.
Output to. Next, the buzzer sounding means 23 generates a buzzer signal n to cause the speaker 215 to sound a buzzer (S23), and the display means 24 displays that the wake-up state is in effect (S24). This is for example an LED
Is turned on for 0.1 seconds and turned off for 1.5 seconds. Next, the battery voltage determination means 25 determines that the battery voltage is a predetermined voltage (for example, 2.
85 V) or less (S25), and if it is equal to or higher than the predetermined voltage, the electromagnetic wave detecting means 26 next determines the presence or absence of an electromagnetic wave based on the electromagnetic wave detection signal k (S26), and the electromagnetic wave detecting means 26. When it is determined that the electromagnetic wave is present, the power switch determination means 21 next determines whether or not the power switch 205 is turned on (S27), and the master modulated wave level detection means 2 is detected.
8 is 6 when the level of the modulated wave signal from base unit 1 is lowered.
It is determined whether or not it has continued for more than a second (S28), and the plug insertion detecting means 29 detects whether or not the charging plug is inserted (S29). When the power switch 105 is not on, the state in which the level of the modulated wave signal from the base unit 1 is lowered does not continue for 6 seconds or longer, and the charging plug is not inserted, the call operating means 27 causes the handset 2 to talk. The operation state is entered (S29a).

When it is determined in step S26 that there is no electromagnetic wave, the time determination means 30 next determines that the electromagnetic wave is interrupted by 2 times.
It is determined whether the time is 0 seconds (predetermined time) or more (S31), and when the interruption of the electromagnetic wave is 20 seconds or less, the electromagnetic wave is detected again. When the interruption of the electromagnetic wave is 20 seconds or less, the process proceeds to step S35 described later. When it is determined in step S27 that the power switch 205 is on, the time determination means 30 determines whether the on time of the power switch 205 is 0.5 seconds or less (S32). Adjust the volume on the speaker 215 for step S
The process moves to 27 (S38). When the on time of the power switch 205 is 0.5 seconds or more, the time determination means 30
Determines whether or not the on time of the power switch 205 is 2 seconds or more (S33), and if it is 2 seconds or more, the buzzer sounds and the process of FIG. 8 is ended (S39). Next, the time determination means 18 determines whether or not the on time of the power switch 105 is 1.9 seconds or more, and if it is 1.9 seconds or more, the time determination means 18 shifts to the sleep state of steps S35 to S37a. If it is 9 seconds or less, the process proceeds to step S29a.

In the sleep state of steps S35 to S37a, it is judged whether or not the electromagnetic wave is detected by the electromagnetic wave detecting means 26 (S35), and the power switch determining means 2 is used.
1. Whether or not the power switch 205 in 1 is ON (S
36), it is determined whether or not the plug insertion detecting means 29 has detected insertion of the charging plug (S37). When the electromagnetic wave is not detected, the power switch 205 remains off, and the insertion of the charging plug is not detected, the power switch determination means 21 turns off the stabilized power supply 213 (S37a). If an electromagnetic wave is detected or the power switch 205 is on, the process proceeds to step S21, and if it is detected that the charging plug is inserted, step S30.
Move to. If it is determined in step S28 that the level of the modulated wave signal from the master unit 1 has decreased for 6 seconds or more, the process proceeds to step S35.

Step S30 is a charging process to be executed when the insertion of the charging plug is detected in step S29. This charging process will be described later with reference to FIG. When the power switch 205 is on for 1.9 seconds or less in step S34, the process proceeds to step S29a.

Next, the charge control operation of the base unit 1 will be described with reference to FIG. First, the charging determination unit 191 determines whether or not the charging of the parent device rechargeable battery 112 is completed (S41). The charging switch control means 192 turns on the charging switch 111 when it is determined that the charging is not completed in step S41 (S42), and turns off the charging switch 111 when it is determined that the charging is completed (S43). After turning off the charging switch 111, the plug determining unit 193 determines whether or not the charging plug is removed, and ends the charging process when the removal of the charging plug continues for a predetermined time or more. (S44).

Finally, the charge control operation of the slave unit 2 will be described with reference to FIG. First, the charging determination unit 321 determines whether or not the charging of the parent device rechargeable battery 212 is completed (S41). The charging switch control means 322 turns on the charging switch 211 when it is determined that the charging is not completed in step S41 (S42), and turns off the charging switch 211 when it is determined that the charging is completed (S43). After turning off the charging switch 211, the plug determination means 323
It is determined whether or not the charging plug is removed, and if the removal of the charging plug continues for a predetermined time or more, the charging process is ended (S44).

As described above, according to the present embodiment, base unit 1 is in the call operation state when it detects the microphone current output from mobile phone 3 in which the power supply voltage is equal to or higher than the predetermined voltage and is in the transmission / reception state. When a call operation state is established, a voice signal from the mobile phone 3 is wirelessly transmitted to the handset 2, and a voice signal from the handset 2 is wirelessly transmitted to the mobile phone 3, and the handset 2 inputs a voice. By including the speaker 216 and the speaker 215 that outputs a voice, the master unit 1 and the slave unit 2 that are wire-connected to the mobile phone 3 can be independently arranged regardless of each other, and for example, the slave unit. If 2 can be attached to the driver, the cable that was required in the past will be unnecessary, so the cable will not get caught in the hand when driving a car etc., and you can talk with your hands completely free. Advantageous effect rolling can be performed is obtained.

The base unit 1 also includes a microphone current detection unit 104 for detecting a microphone current output from the mobile phone in the transmission / reception state, and a base unit transmission unit for wirelessly transmitting a voice signal from the mobile phone 3 to the handset 2. 102, a master receiver 103 that wirelessly transmits a voice signal from the slave 2 to the mobile phone 3, a master controller 101 that controls the whole, and a master charger that always supplies power to the master controller 101. Since the master unit 1 can reliably detect the microphone current in the microphone current detection unit 104 and become in the call operation state by including the formula battery 112, the master unit transmission unit 102 causes the master unit transmission unit 102 to output the voice signal from the mobile phone 3. Wirelessly transmitted to the speaker 215 of the handset unit 2, and the base unit receiving unit 103 sets the microphone 216 of the handset unit 2.
It is possible to reliably wirelessly transmit the voice signal from the mobile phone 3 to the mobile phone 3.

Further, the slave unit 2 has a microphone 216 for inputting voice and a speaker 215 for outputting voice, and the electromagnetic wave radiated from the mobile phone 3 in a transmitting / receiving state when the supply voltage of the power source is equal to or higher than a predetermined voltage. Is detected and the modulated wave signal level from the base unit 1 is equal to or higher than a predetermined level, the call operation state is set. When the call operation state is set, the modulated wave signal from the base unit 1 including the voice signal is received and the voice signal is received. By transmitting a modulated wave signal including a signal to the base unit 1, the base unit 1 and the handset 2 that are wire-connected to the mobile phone 3 can be independently arranged at arbitrary positions regardless of each other. If the driver can wear the cordless handset 2,
Since the cable which has been conventionally required is not necessary, the cable is not caught in the hands when driving an automobile or the like, and the call and the driving using the microphone and the speaker can be performed with both hands completely free. The handset 2 detects an electromagnetic wave emitted from the mobile phone 3, an electromagnetic wave detecting unit 204, a handset transmitting unit 202 that transmits an audio signal from the microphone 216 to the base unit 1, and an audio signal from the base unit 1. By having the slave unit receiving unit 203 for receiving, the slave unit control unit 201 for controlling the entire unit, and the slave unit rechargeable battery 212 that constantly supplies power to the slave unit control unit 201, the slave unit 2 is operated from the mobile phone 3. Since the electromagnetic wave detection unit 204 can surely detect the radiated radio wave and enter into the call operation state, the handset transmission unit 202 reliably wirelessly transmits the voice signal from the microphone to the mobile phone 3 via the base unit 1. In addition, the child device reception unit 203 can reliably send the audio signal from the mobile phone 3 via the parent device 1 to the speaker 215.

Further, the slave unit 2 has a disk portion 218 in which a microphone 216 and a speaker 215 are housed, and a disk portion 218.
Since the disc portion 218 accommodating the speaker 215 can be attached to the ear-shaped portion by having the attachment portion 219 that attaches the speaker 215 to the ear-shaped portion, only the person who wears the sound from the speaker 215 can hear it. It is possible to prevent others from knowing their information.

Furthermore, the master unit control section 101 determines whether the power switch 105 is on or off, and the power switch 1
Power switch determination means 11 that starts operation when it is determined that 05 is on, setting means 12 that sets the transmission / reception frequency, and wakes up when power is supplied to all circuits. Display means 13 for displaying the state and battery voltage determination means 1 for determining whether or not the output voltage of the parent device rechargeable battery 112 is below a predetermined voltage
4, a microphone current detection means 15 for detecting a microphone current output from the mobile phone 3 in the transmission / reception state, a call operation means 16 for performing a call operation, and a sleep state when the interruption of the microphone current continues for a predetermined time or more. The wake-up state is displayed by including the time determination means 18, the plug insertion detection means 17 that detects the insertion state of the charging plug, and the charging processing means 19 that performs the charging process when the charging plug is in the insertion state. The microphone current can be notified to the user, and when the microphone current flows, the microphone current detecting means 15 detects the microphone current and the base unit 1
Can be reliably put into the call operation state, and when the interruption of the microphone current continues for a predetermined time or longer, the parent device is put into the sleep state, so that the life of the parent device rechargeable battery 112 can be extended. .

Further, the handset controller 201 determines whether the power switch 205 is on or off, and the power switch 2
When it is determined that 05 is ON, the power switch determination means 21 that starts the operation, the setting means 22 that sets the transmission / reception frequency, and the wake-up state when the power is supplied to all the circuits Display means 24 for displaying the state and battery voltage determination means 2 for determining whether or not the output voltage of the slave unit rechargeable battery 212 is below a predetermined voltage.
5, an electromagnetic wave detecting means 26 for detecting an electromagnetic wave emitted from the mobile phone 3 in a transmitting / receiving state, a call operating means 27 for performing a call operation, and a time determination for shifting to a sleep state when the interruption of the electromagnetic wave continues for a predetermined time or more. Means 30
By having the plug insertion detecting means 29 for detecting the insertion state of the charging plug and the charging processing means 32 for performing the charging process when the charging plug is in the inserted state, the wakeup state is displayed and notified to the user. In addition, when the electromagnetic wave from the mobile phone 3 is generated, the electromagnetic wave detecting means 26 detects the electromagnetic wave to detect the electromagnetic wave.
Can be reliably put into a call operation state, and when the interruption of electromagnetic waves continues for a predetermined time or longer, the slave unit 2 is put into a sleep state, so that the life of the slave unit rechargeable battery 212 can be extended. .

Further, the charging processing means 19 is a charging determination means 1 for determining whether or not the charging of the parent device rechargeable battery 112 is completed.
91, charging switch control means 1 for turning on the charging switch 111 when it is determined that the charging is not completed and for turning off the charging switch 111 when it is determined that the charging is completed.
92, a plug determination unit 1 that determines whether the charging plug is removed and terminates the charging process when the state where the charging plug is removed continues for a predetermined time or more.
By having 93, it is possible to monitor the charging state of the parent device rechargeable battery 112 and to also provide the parent device rechargeable battery 1
12 can be accurately charged.

Further, the charging processing means 32 determines whether or not the charging of the slave unit rechargeable battery 212 is completed, and the charging determination means 3
21 and charging switch control means 3 that turns on the charging switch 211 when it is determined that the charging is not completed and turns off the charging switch 211 when it is determined that the charging is completed.
22 and plug determining means 3 for determining whether or not the charging plug is removed, and for ending the charging process when the state where the charging plug is removed continues for a predetermined time or more.
23, the charging state of the child device rechargeable battery 212 can be monitored and the child device rechargeable battery 2 is provided.
12 can be accurately charged.

[0045]

As described above, according to the hands-free phone for a mobile phone according to the first aspect of the present invention, the master unit wiredly connected to the mobile phone and the slave unit wirelessly connected to the master unit. A hands-free phone for mobile phones, comprising:
When power is supplied to all circuits in the mobile phone, the master unit, and the slave unit, the master unit detects the microphone current output from the mobile phone in which the power supply voltage is equal to or higher than the predetermined voltage and is in the transmitting / receiving state. When the call is activated, the voice signal from the mobile phone is wirelessly transmitted to the handset when the call is activated, and the voice signal from the handset is wirelessly transmitted to the mobile phone, and the handset inputs the voice. By having the microphone and the speaker that outputs the voice, the parent device and the child device that are wire-connected to the mobile phone can be independently arranged at arbitrary positions regardless of each other. For example, the child device can be provided to the driver. If you can attach it, the cable that was required in the past will be unnecessary, so the cable will not get caught in your hand when driving a car etc. You can talk and drive with both hands completely free. Advantageous effect can Ukoto is obtained.

According to the mobile phone hands-free phone of the second aspect, in the mobile phone hands-free phone of the first aspect, the master unit detects the microphone current output from the mobile phone in the transmitting / receiving state. The microphone current detector, the master unit transmitter that wirelessly transmits the audio signal from the mobile phone to the mobile phone, the master receiver unit that wirelessly transmits the audio signal from the mobile phone to the mobile phone, and the master that controls the entire unit. By having the master unit control unit and the master unit rechargeable battery that constantly supplies power to the master unit control unit, the master unit can reliably detect the microphone current in the microphone current detection unit and enter the call operation state. Therefore, the master unit transmitter can securely wirelessly transmit the voice signal from the mobile phone to the speaker of the slave unit, and the master unit receiver can reliably wirelessly transmit the voice signal from the microphone of the slave unit to the mobile phone. To do Advantageous effect can be obtained.

According to the hands-free phone for a mobile phone of claim 3, in the hands-free phone for a mobile phone according to claim 1 or 2, the slave unit is a microphone for inputting voice and a speaker for outputting voice. When the supply voltage of the power supply is equal to or higher than a predetermined voltage, the electromagnetic wave radiated from the mobile phone in the transmission / reception state is detected, and the modulated wave signal level from the master unit is equal to or higher than the predetermined level, the call operation state is set. , When a call operation state is set, a modulated wave signal including a voice signal from the master unit is received, and a modulated wave signal including a voice signal is transmitted to the master unit. The machine and the machine can be placed independently at any position independently of each other. For example, if the slave machine can be mounted on the driver, the cable that was necessary in the past can be eliminated. , The cable is not caught in the hand during operation, such as an automobile, advantageous effect is obtained that it is possible to perform the operation and call hands to use a microphone and a speaker in an entirely free state.

According to the mobile phone hands-free phone of the fourth aspect, in the mobile phone hands-free phone of the third aspect, the slave unit is an electromagnetic wave detecting section for detecting an electromagnetic wave emitted from the mobile phone. , The slave unit transmitting unit that transmits the audio signal from the microphone to the master unit, the slave unit receiving unit that receives the voice signal from the master unit, the slave unit control unit that controls the entire unit, and the slave unit control unit By having the cordless battery that supplies power to the cordless handset, the cordless handset can reliably detect radiated radio waves from the mobile phone in the electromagnetic wave detection unit and enter the call operation state. It is advantageous that the voice signal of the mobile phone can be securely wirelessly transmitted to the mobile phone via the master device, and the slave receiver can reliably send the voice signal from the mobile phone via the master device to the speaker. The effect is It is.

According to the hands-free phone for a mobile phone of the fifth aspect, in the hands-free phone for a mobile phone of the third or fourth aspect, the slave unit is a disk portion in which a microphone and a speaker are housed. Since the disc part housing the speaker can be mounted on the ear part by having the mounting part for mounting the disc part on the ear part, only the person wearing the speaker can hear the sound from the speaker. It is possible to obtain an advantageous effect that the information of oneself is not known to others.

According to the hands-free phone for a mobile phone described in claim 6, in the hands-free phone for a mobile phone according to any one of claims 2 to 5, the master unit control section has the power switch ON / OFF. When it is judged to be off and the power switch is judged to be on, the power switch judgment means to start the operation, the setting means to set the transmission and reception frequency, and the wake-up state in which power is supplied to all circuits Sometimes a display means for displaying a wake-up state, a battery voltage determination means for determining whether or not the output voltage of the parent device rechargeable battery is below a predetermined voltage, and a microphone current output from the mobile phone in the transmission / reception state are detected. Microphone current detection means, call operation means for performing a call operation, and the time to shift to the sleep state when the interruption of the microphone current continues for a predetermined time or longer A wake-up state is displayed and notified to the user by having a setting means, a plug insertion detection means for detecting the insertion state of the charging plug, and a charging processing means for performing charging processing when the charging plug is in the insertion state. When the microphone current flows, the microphone current detection means can detect the microphone current to reliably put the base unit into the call operation state. Furthermore, when the interruption of the microphone current continues for a predetermined time or longer, Since the base unit is put into the sleep state, there is an advantageous effect that the life of the base unit rechargeable battery can be extended.

According to the hands-free phone for a mobile phone of the present invention, in the hands-free phone for a mobile phone according to any one of claims 4 to 6, the slave unit control section has the power switch ON / OFF. When it is judged to be off and the power switch is judged to be on, the power switch judgment means to start the operation, the setting means to set the transmission and reception frequency, and the wake-up state in which power is supplied to all circuits Sometimes display means for displaying the wake-up state, battery voltage determination means for determining whether or not the output voltage of the slave unit rechargeable battery is less than or equal to a predetermined voltage, and electromagnetic waves for detecting electromagnetic waves emitted from the mobile phone in the transmitting / receiving state. A detection means, a call operation means for performing a call operation, and a time determination means for shifting to a sleep state when the interruption of the electromagnetic wave continues for a predetermined time or more, By having the plug insertion detection means for detecting the insertion state of the power plug and the charging processing means for performing the charging processing when the charging plug is in the insertion state, it is possible to display the wake-up state to notify the user, , When an electromagnetic wave from a mobile phone is generated, the electromagnetic wave detection means can detect the electromagnetic wave to reliably bring the base unit into a call operation state, and when the interruption of the electromagnetic wave continues for a predetermined time or longer, the slave unit sleeps. Since the state is set, the advantageous effect that the life of the slave unit rechargeable battery can be extended can be obtained.

According to the mobile phone hands-free phone of the eighth aspect, in the mobile phone hands-free phone of the sixth aspect, the charging processing means determines whether or not charging of the master unit rechargeable battery is completed. A charge determination means for determining, a charge switch control means for turning on the charge switch when it is determined that the charging is not completed, and a charge switch control means for turning off the charge switch when it is determined that the charging is completed, and whether the charging plug is removed. It is possible to monitor the charging state of the parent device rechargeable battery by having a plug determining unit that determines whether or not the charging plug is removed and continues the charging process when the state where the charging plug is removed continues for a predetermined time or more. At the same time, there is an advantageous effect that the master unit rechargeable battery can be accurately charged.

According to the hands-free phone for a mobile phone of the ninth aspect, in the hands-free phone for a mobile phone of the seventh aspect, the charging processing means determines whether or not the charging of the slave unit rechargeable battery is completed. A charge determination means for determining, a charge switch control means for turning on the charge switch when it is determined that the charging is not completed, and a charge switch control means for turning off the charge switch when it is determined that the charging is completed, and whether the charging plug is removed. It is possible to monitor the charging state of the slave unit rechargeable battery by having a plug determining unit that determines whether or not the charging plug is removed and terminates the charging process when the state where the charging plug is removed continues for a predetermined time or longer. At the same time, the advantageous effect that the slave unit rechargeable battery can be accurately charged is obtained.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a hands-free phone for a mobile phone according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a hands-free phone for a mobile phone in FIG.

FIG. 3 is an external view showing the external appearances of a master unit and a mobile phone.

FIG. 4 is an external view showing the external appearance of a child device and a mobile phone.

FIG. 5 is a functional block diagram showing a function realizing means in a control unit of the master unit.

FIG. 6 is a functional block diagram showing a function realizing means in a control unit of a child device.

FIG. 7 is a flowchart showing the operation of the master unit.

FIG. 8 is a flowchart showing the operation of the child device.

FIG. 9 is a flowchart showing a charge control operation of a master unit and a slave unit.

FIG. 10 is a configuration diagram showing a conventional hands-free phone for a mobile phone for freeing both hands.

[Explanation of symbols]

1 base unit 2 cordless handsets 3 mobile phones 11, 21 Power switch determination means 12, 22 Setting means 13, 24 Display means 23 Buzzer sounding means 14, 25 Battery voltage determination means 15 Microphone current detection means 16, 27 Call operation means 17, 29 Plug insertion detection means 18, 30 hours judgment means 19, 32 Charge processing means 26 Electromagnetic wave detection means 28 Parent device modulated wave level detection means 31 Volume control means 101, 201, 301 control unit 102, 202 transmitter 103, 203 receiver 104 Microphone current detector 105, 205 Power switch 106, 206 duplexer 107, 207, 303 antenna 108, 208 Attenuator 109, 209 LED (display) 110, 210 charging jack 111, 211 Charge switch 112,212 Rechargeable battery 113,213 Stabilized power supply 114 plug 191, 321 Charge determination means 192, 322 Charge switch control means 193, 323 Plug determination means 204 Electromagnetic wave detector 214 amplifier 215 speaker 216 microphone 217 Low-pass filter (LPF) 218 Disk part 219 mounting part 220 fixed part 221 Moving part 222 axis 302 Earphone microphone jack

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H04Q 7/32 H04B 7/26 V 7/38 109G F term (reference) 5K023 AA07 BB02 BB18 EE04 EE12 EE17 LL04 NN06 PP02 PP12 5K027 AA11 BB01 BB17 CC08 EE11 GG04 HH03 KK01 KK07 5K067 AA21 BB03 BB04 DD11 EE02 FF02 FF25 FF38 KK17

Claims (9)

[Claims] 1. A handsfree phone for a mobile phone, which comprises a master unit wiredly connected to a mobile phone unit and a slave unit wirelessly connected to the master unit, wherein the mobile phone unit, the master unit and the slave unit. When power is supplied to all the circuits in and, the master unit performs a call operation when the supply voltage of the power supply is equal to or higher than a predetermined voltage and the microphone current output from the mobile phone in the transmission / reception state is detected. When the call operation state is entered, a voice signal from the mobile phone is wirelessly transmitted to the slave unit, and a voice signal from the slave unit is wirelessly transmitted to the mobile phone, and the slave unit inputs voice. A handsfree phone for a mobile phone, which has a microphone and a speaker for outputting a voice. 2. The master unit, a microphone current detection unit for detecting a microphone current output from the mobile phone in a transmission / reception state, and a master unit transmission unit for wirelessly transmitting an audio signal from the mobile phone to the slave unit. A master unit receiving unit that wirelessly transmits a voice signal from the slave unit to the mobile phone; a master unit control unit that controls the entire unit; and a master unit rechargeable battery that constantly supplies power to the master unit control unit. The hands-free phone for a mobile phone according to claim 1, further comprising: 3. The slave unit has a microphone for inputting voice and a speaker for outputting voice, and the electromagnetic wave radiated from the mobile phone in a transmission / reception state when the supply voltage of the power source is equal to or higher than a predetermined voltage. When it detects and the modulated wave signal level from the master unit is equal to or higher than a predetermined level, it becomes the call operation state, and when it becomes the call operation state, the modulated wave signal from the master unit including the voice signal is received and the voice is received. The mobile phone handsfree phone according to claim 1 or 2, wherein a modulated wave signal including a signal is transmitted to the master unit. 4. The slave unit includes an electromagnetic wave detecting unit for detecting an electromagnetic wave emitted from the mobile phone, a slave unit transmitting unit for transmitting an audio signal from the microphone to the master unit, and a slave unit for transmitting the sound signal from the master unit. The slave unit receiving unit for receiving a voice signal, a slave unit control unit for controlling the whole, and a slave unit rechargeable battery for always supplying power to the slave unit control unit. Hands-free phone for mobile phones. 5. The sub-unit has a disc portion accommodating the microphone and the speaker, and a mounting portion for mounting the disc portion on an ear-shaped portion. Hands-free phone for the listed mobile phones. 6. The master unit control unit turns on / off a power switch.
When it is determined that the power switch is off and the power switch is on, a power switch determination means that starts operation, a setting means that sets the transmission / reception frequency, and a wakeup state in which power is supplied to all circuits. Display unit for displaying the wake-up state at the time of charging, a battery voltage determining unit for determining whether the output voltage of the base unit rechargeable battery is a predetermined voltage or less, and a microphone output from the mobile phone in the transmitting / receiving state. Microphone current detection means for detecting a current, call operation means for performing a call operation, time determination means for shifting to a sleep state when the interruption of the microphone current continues for a predetermined time or more, and a plug for detecting a plugged state of a charging plug And a charging processing means for performing charging processing when the charging plug is in a plugged state. Mobile phone hands-free phone according to any one of claims 2 to 5 that. 7. The slave unit controller is configured to turn on a power switch.
When it is determined that the power switch is off and the power switch is on, a power switch determination means that starts operation, a setting means that sets the transmission / reception frequency, and a wakeup state in which power is supplied to all circuits. Display means for displaying the wake-up state at the time of charging, battery voltage determination means for determining whether or not the output voltage of the slave unit rechargeable battery is less than or equal to a predetermined voltage, and electromagnetic waves emitted from the mobile phone in the transmission / reception state. Electromagnetic wave detecting means for detecting a state, a call operation means for performing a call operation, a time determining means for shifting to a sleep state when the interruption of the electromagnetic wave continues for a predetermined time or longer, and a plug insertion detecting means for detecting an insertion state of a charging plug. And a charging processing means for performing charging processing when the charging plug is in a plugged state. Mobile phone for hands-free phone according to any one of the optimum 6. 8. The charging processing means determines whether charging of the master unit rechargeable battery is completed or not, and when it is determined that charging is not completed, turns on a charging switch to indicate that charging is completed. When the determination is made, the charging switch control means for turning off the charging switch, and it is determined whether or not the charging plug is removed, and the charging process is performed when the removal state of the charging plug continues for a predetermined time or more. 7. A hands-free phone for a mobile phone according to claim 6, further comprising a plug determining means for terminating. 9. The charging processing means determines whether charging of the slave unit rechargeable battery is completed or not, and when it is determined that charging is not completed, turns on a charging switch to indicate that charging is completed. When the determination is made, the charging switch control means for turning off the charging switch, and it is determined whether or not the charging plug is removed, and the charging process is performed when the removal state of the charging plug continues for a predetermined time or more. 8. The handsfree phone for a mobile phone according to claim 7, further comprising a plug determining means for terminating.