JPH10304463A - Hand-free system and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent illegal use of a portable telephone set, even in the case that a vehicle is stolen while a portable telephone set is connected to the hands- free system by detecting an incoming call to the portable telephone set to generate a call tone, picking up a voice raised in a cabin in the case of a speech, sending a speech voice from an opposite party and controlling the portable telephone set, a microphone and a speaker with key operations. SOLUTION: A control means 22 controls each section, in response to a control code signal outputted from a portable telephone set HT via a communication means 20 and controls a speaker 6 and a microphone 8 to pick up and to transmit a voice in the case of a speech. Furthermore, a control code in response to an operation key is outputted to the portable telephone set HT responding to the operation key via the communication means 20, in the case of operating the operation key 7 to control it to be in a prescribed operating state. A keyless entry system 21 discriminates whether or not an entered keyless signal matches with a registration code, and when matching, a door operation in response to a door open/close state and lock/unlock of a dial of the portable telephone set HT are conducted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hands-free device which is provided in a vehicle compartment and allows a user to talk without holding a telephone, and a control method therefor.

[0002]

2. Description of the Related Art Conventionally, it has been proposed to install a hands-free device capable of making a call without holding a telephone hand in a vehicle cabin, and particularly with the recent spread of portable telephones (hereinafter referred to as mobile telephones). A hands-free device of a type in which a portable telephone is mounted has been considered, and this type of device is configured as shown in FIG. 5, for example.

As shown in FIG. 5, a cradle 1 is installed in a center console, a glow box, or the like, and a concave portion 2 capable of accommodating various types of commercially available mobile phones HT is formed in the cradle 1, and the concave portion 2 has a portable portion. A detection switch S for detecting accommodation of the telephone HT and enabling a hands-free operation is provided.

Further, as shown in FIG. 5, a cable 3 is connected to the cradle 1, and a connector 4 provided at the end of the cable 3 is connected to a connector provided also on the mobile phone HT side. By Cradle 1
The mobile phone HT is connected to a control circuit (not shown) via the
The operation of T is controlled.

As shown in FIG. 5, a speaker 6 for transmitting sound from the other party is connected to the cradle 1 so as to be freely connected to and detached from the cradle 1, and a telephone key such as a talk key, an end key, and a hold key. Operation means having various operation keys 7 of
An operation unit 9 including a built-in microphone 8 for collecting voices emitted by a passenger in the vehicle cabin is connected to the cradle 1 so as to be freely separated from the cradle 1, and a volume control knob 10 is provided on the cradle 1.

When the connector 4 is connected to the connector of the mobile phone HT and the mobile phone HT is accommodated in the concave portion 2 of the cradle 1, the mobile phone H is controlled by the control circuit described above.
T can be controlled. For example, when a driver receives an incoming call while driving alone, a ringing tone is transmitted from the speaker 6 and the driver turns on the talk key of the operation unit 9 so that the mobile phone HT While being controlled by the line connection state, it is possible to make a call with the destination, while when the driver makes a call, the user turns on the call key of the operation unit 9 and dials a predetermined telephone number, or calls the mobile phone HT. By operating a predetermined key of the operation unit 9 and dialing to call a predetermined telephone number from among telephone numbers registered in advance, the mobile phone HT is controlled to a calling state, and a telephone of a desired destination is called.

At this time, a control code signal corresponding to the operated key is output to the mobile phone HT from the predetermined control code signal defined in advance by the normal control circuit, and the mobile phone HT is controlled to a predetermined operation state. It is supposed to be.

Further, since the cradle 1 is also connected to the battery of the vehicle, the mobile phone HT can be charged by housing the mobile phone HT in the concave portion 2.

[0009]

By the way, the door is normally locked when the driver leaves the car, but when the door is pry open or the vehicle is stolen by using an illegally obtained duplicate key. If the mobile phone HT is still connected to the hands-free device, the mobile phone HT may be used improperly and the telephone usage fee may be charged.

[0010] However, in the above-mentioned conventional apparatus,
There is a problem that unauthorized use of the mobile phone due to the theft of the vehicle cannot be prevented.

An object of the present invention is to prevent unauthorized use of a mobile phone when a vehicle is stolen while the mobile phone is connected to the hands-free device.

[0012]

According to the first aspect of the present invention, there is provided a communication means connected to a portable telephone for detecting an incoming call and generating a ringing tone, and a telephone operation such as a call key, an end key and a hold key. Operating means consisting of a plurality of keys for use, a microphone for collecting sound emitted in the vehicle cabin during a call, a speaker for transmitting a call sound from the other party during a call, and a communication means connected to the communication means. Control means for controlling the telephone through the communication means in response to a key operation and controlling the microphone and speaker during a call, wherein the control means captures an identification code sent from a keyless entry system. And a door lock sensor that detects the locked and unlocked state of the door and outputs a door lock detection signal and a door unlock detection signal. An input unit, a determining unit that compares the identification code captured by the identification code capturing unit with a preset registration code to determine whether the two match, and determines that the two match. And when the door lock detection signal is input to the input unit, outputs a dial lock signal for controlling the telephone to a dial lock state via the communication means, and the determination unit determines that they match with each other; A dial lock / unlock unit that outputs a dial unlock signal for controlling the telephone to a dial unlock state via the communication unit when the door unlock detection signal is input to the input unit. It is characterized by being.

As a control method of such a hands-free device, a door lock sensor detects lock / unlock of a door and captures an identification code sent from a keyless entry system. Comparing the captured identification code with a preset registration code to determine whether or not the two coincide with each other. The captured identification code and the registration code match, and the door lock sensor locks the door. When is detected, the telephone is controlled to a dial lock state,
It is preferable that the telephone is controlled to be in a dial unlock state when the received identification code and the registration code match and when the door lock sensor detects unlocking of the door.

According to this configuration, when the driver locks the door with the keyless entry system when the driver tries to leave the car, the captured identification code matches the registration code and the door is locked. Then, the portable telephone is controlled to the dial lock state.

Therefore, even if the vehicle is stolen due to the door being opened in this state, the portable telephone is in the dial locked state, so that unauthorized use of the portable telephone is prevented. It is.

By the way, when the driver gets into the car, the door is unlocked by the keyless entry system, so that the condition for matching the acquired identification code with the registration code and the condition for unlocking the door are both satisfied. Therefore, the portable telephone is controlled to be in the dial unlock state, and the portable telephone can be used as usual.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. Here, FIG. 1 is a block diagram, FIG. 2 is a partial detailed block diagram, and FIGS.
Is a flowchart for explaining the operation. However, the external configuration of the hands-free device in this embodiment is basically the same as that shown in FIG.
5 is substantially the same as that shown in FIG.
See also

First, FIG. 1 will be described. In FIG. 1, reference numeral 20 denotes a communication unit, which is connected to the mobile phone HT accommodated in the cradle 1 by the cable 3 and the connector 4, and detects an incoming call to generate a ringing tone.

Reference numeral 21 denotes a keyless entry system,
For example, when a keyless signal such as an infrared signal or an ultrasonic signal composed of a predetermined identification code assigned to the driver is input by the driver, it is determined whether the input identification code matches a registration code registered in advance. A determination is made, and if they match, the door is locked if the door is unlocked at that time, and the door is unlocked or unlocked if the door is locked.

Reference numeral 22 denotes control means, which is constituted by a microcomputer or the like, is connected to the communication means 20, and basically transmits a control code signal corresponding to a key operation of the operation unit 9 to the mobile phone HT via the communication means 20. The mobile phone HT is output to control the hands-free device in accordance with a control code signal output from the mobile phone HT via the communication means 20.
Has the function of controlling In FIG. 1, AT is an antenna of the mobile phone HT.

Next, FIG. 2 showing the internal structure of the control means 22 will be described.

In FIG. 2, reference numeral 22a denotes a door lock sensor SA which detects a door lock and an unlock, respectively, and outputs a door lock detection signal and a door unlock detection signal.
An input unit to which signals from a vehicle speed sensor SB for detecting a vehicle speed and a parking brake sensor SC for detecting a parking brake state are input, 22b is an identification code capturing unit for capturing an identification code from the keyless entry system 21, and 22c is a judgment. The same registration code as that of the keyless entry system 21 is registered in advance, and it is determined whether or not the identification code captured by the identification code capturing unit 22b matches the registration code.

Reference numeral 22d denotes a main control unit, 22e denotes a code signal output unit, and the main control unit 22d controls each unit in accordance with a control code signal output from the mobile phone HT via the communication means 20, and in particular, It has a function of controlling the speaker 6 and the microphone 8 to collect and transmit call voice during a call, and controls the code signal output unit 22e when any one of the operation keys 7 is operated, so that a predetermined predetermined And outputting a control code signal corresponding to the operated key among the control code signals to the mobile phone HT via the communication means 20,
It has a function of controlling the mobile phone HT to a predetermined operation state.

Further, the main control unit 22d includes an input unit 22a
Speed sensor SB and parking brake sensor SC
It is determined whether the vehicle is stopped from the output of
It has a function of detecting the locked or unlocked state of the door from the output signal of the door lock sensor SA.

The main control unit 22d also functions as a dial lock / unlock unit together with the code signal output unit 22e, and this is used when the judgment unit 22c judges that the identification code matches the registration code. If the lock is detected, the code signal output unit 22e is controlled to output the control code signal corresponding to the dial lock signal to control the mobile phone HT to the dial lock state, and the identification code is determined by the determination unit 22c. If the main control unit 22d detects that the door is unlocked when it is determined that the password matches the registration code, the main control unit 22d controls the code signal output unit 22e so as to control the mobile phone HT to be in the dial unlocked state. The control code signal corresponding to the lock signal is output.

Next, the operation of the above-mentioned hands-free device will be described with reference to the flowcharts of FIGS.

First, as shown in FIG. 3, the main control unit 22d of the control means 22 determines whether or not there is an outgoing call operation, that is, whether or not the call key as the operation key 7 is turned on and a predetermined telephone number is dialed. Is determined (step S1), and if the determination result is YES, a predetermined calling process including a call of the dialed party is performed (step S2), and thereafter, the process returns to step S1 again.

On the other hand, if the decision result in the above step S1 is NO, the main control unit 22d determines whether there is an incoming call, that is, whether there is an incoming signal from the telephone of the caller (step S3). If the result of this determination is YES, the line with the caller is connected by a predetermined incoming call process (step S4), and the process returns to step S1. If the result of determination in step S3 is NO, it is determined whether or not a call is in progress. A determination is made (step S5).

Then, the decision result in the step S5 is YES.
If so, it is determined whether or not the end operation, that is, the operation of the end key which is the operation key 7 has been performed (step S6). If the result of this determination is YES, a call termination process for disconnecting the line is performed. (Step S7), and then Step S1
Returning to step S6, if the decision result in the step S6 is NO, it is decided whether or not there is an end signal by the end operation of the transmission destination (step S8). If the decision result is YES, the process in the step S7 is performed. The process returns to step S1 if the determination result is NO.

On the other hand, if the decision result in the step S5 is NO, the process shifts to a standby process described in detail below (step S5).
9) Then, the process returns to step S1.

Next, the standby process will be described in detail. As shown in FIG. 4, first, the identification code from the keyless entry system 21 is stored in the identification code capturing unit 22.
b is determined (step T).
1) If this determination result is NO, the operation is terminated as it is, and if the determination result is YES, it is determined whether or not the identification code captured by the determination unit 22c matches the registration code registered in advance. This is performed (step T2).

If the decision result in the step T2 is NO, the operation is ended as it is, and if the decision result is YES, it is determined whether or not the door is locked based on the output signal of the door lock sensor SA ( In step T3), if the result of this determination is YES, for example, it is determined that the door has been locked in order for the driver to move away from the car, so that the mobile phone HT is dialed from the code signal output unit 22e under the control of the main control unit 22d. A predetermined control code signal is output to control the locked state (step T4), and the operation ends thereafter.

On the other hand, if the decision result in the step T3 is NO, for example, it is determined that the driver has unlocked or unlocked the door in order to get into the car, and the code signal output is controlled by the main control unit 22d. The control unit 22e controls the mobile phone HT to be in the dial unlocked state, that is, outputs a predetermined control code signal to unlock the dial (step T5), and then the operation ends.

Therefore, when the driver locks the door with the keyless entry system 21 when the driver tries to leave the car, the dial lock, which is the same as the registration code of the identification code taken into the identification code take-in section 22b and the lock of the door. Are satisfied, and the mobile phone HT is controlled to the dial lock state by the processing of steps T1 to T4 in FIG. 4, so that even if the door is pryed open and the vehicle is stolen in this state, Since the phone HT is in the dial lock state, the mobile phone HT
Would be impossible to use illegally.

When a driver gets into a car,
By unlocking the door by the keyless entry system 21, two conditions for dial unlocking, that is, matching of the acquired identification code with the registration code and unlocking of the door, are both satisfied. Since the mobile phone is controlled to be in the dial unlocked state by the processes at T2, T3, and T5, the driver can use the mobile phone HT as usual.

As described above, according to the above-described embodiment,
When the driver tries to leave the vehicle, the keyless entry system 21 locks the door, so that the mobile phone HT can be controlled to a dial lock state, so that even if the vehicle is stolen, unauthorized use of the mobile phone is prohibited. It is possible to prevent unfair charging of the telephone usage fee.

The keyless entry system 21
The invention is not limited to the case of using a radio signal such as an infrared ray or an ultrasonic wave as described above, and it is needless to say that a keyless signal including a predetermined identification code may be input by operating a keyboard provided on a door. is there.

[0038]

As described above, according to the present invention, when the door is locked by the keyless entry system, the identification code matches the registration code and the door is locked. In this state, even if the vehicle is stolen, for example, when the door is opened and the vehicle is stolen in this state, it is possible to prohibit unauthorized use of the portable telephone and prevent improper charging of the telephone usage fee. Therefore, it is possible to provide a hands-free device having excellent functions.

[Brief description of the drawings]

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

FIG. 2 is a detailed block diagram of a part of the above.

FIG. 3 is a flowchart for explaining the operation of the above.

FIG. 4 is a flowchart for explaining the operation of the above.

FIG. 5 is an external perspective view of a hands-free device as a background of the present invention.

[Explanation of symbols]

 Reference Signs List 6 speaker 7 operation key 8 microphone 20 communication means 21 keyless entry system 22 control means 22a input section 22b identification code capture section 22c determination section 22d main control section 22e code signal output section HT mobile phone

Claims (2)

[Claims] 1. A communication means connected to a portable telephone for detecting an incoming call and generating a ring tone; an operation means comprising a plurality of telephone operation keys such as a call key, an end key, and a hold key; A microphone for collecting voices emitted in the vehicle cabin, a speaker for transmitting voice calls from the other party during a call, and a telephone connected to the communication means and via the communication means in response to a key operation of the operation means. Control means for controlling the microphone and the speaker during a call, wherein the control means controls an identification code capturing unit for capturing an identification code transmitted from the keyless entry system, and a lock / unlock state of the door. An input unit for receiving a signal from a door lock sensor that detects and outputs a door lock detection signal and a door unlock detection signal; A judging unit for comparing the identification code taken into the unit with a preset registration code to judge whether or not the two coincide with each other; When the input is input, a dial lock signal for controlling the telephone in the dial lock state is output through the communication unit, and the determination unit determines that the two match, and the input unit detects the door unlock detection signal. A hands-free device comprising: a dial lock / unlock unit that outputs a dial unlock signal for controlling the telephone to be in a dial unlock state via the communication means when input is performed. . 2. A call key, an end key separately provided in addition to a key of the telephone while being connected to the portable telephone so as to be freely attached and detached and installed in a vehicle interior,
The operation state of the telephone is controlled according to the operation of a telephone operation key such as a hold key. When an incoming call is received, a ringing tone is generated. A hands-free device that collects a sound emitted by a microphone and sends the sound to a destination, wherein a door lock sensor detects whether the door is locked or unlocked, captures an identification code transmitted from a keyless entry system, and captures the identification. A code is compared with a preset registration code to determine whether they match, and when the acquired identification code and the registration code match and a door lock is detected by the door lock sensor. Then, the telephone is controlled to be in the dial lock state, and only if the acquired identification code and the registration code match. And controlling the telephone to a dial unlocked state when the door lock sensor detects that the door is unlocked.