KR20070050743A - Multi-purpose bluetooth headset system - Google Patents

Abstract

The present invention relates to a multi-purpose Bluetooth headset device, a short-range wireless audio channel connection and a wireless headset (hands free) between the Bluetooth stereo headset and a Bluetooth mobile communication terminal provided therein, and a mobile communication terminal using a charged internal secondary battery Emergency battery function is possible, and simultaneous charging is possible through the power of external charging device or USB port, data communication with PC or other mobile communication terminal is possible, and the laser pointer or flash using the power of internal secondary battery A multi-purpose Bluetooth headset device that can be used as an apparatus. A USB connector 10; A charging circuit unit 20; A charging display unit 21 indicating a charging state; When the external charging device 80 is connected, it is connected to the terminal connected to the external charging device 80, when the external charging device 80 is disconnected, the first switch unit for connecting with the terminal connected to the USB connector 10 ( 30); The mobile communication terminal connector 40 connected to the rechargeable battery 22 through the second switch unit 70 and serving as a laser pointer, and the battery charging pin 41 of the mobile communication terminal. ; An external charger device 81 connected to the external charger 80, a Bluetooth module 91, and a stereo codec unit for converting digital audio data transmitted / received by the Bluetooth module 91 into an analog / digital signal ( It further comprises a Bluetooth device unit 90 having a 92, a caller ID display unit 93 and a DC / DC boost converter 95 for a GSM mobile phone.

Mobile communication terminal, GSM terminal, battery, charging, Bluetooth, laser LED

Description

Multipurpose Bluetooth Headset Device {MULTI-PURPOSE BLUETOOTH HEADSET SYSTEM}

1 is a block diagram showing a multi-purpose Bluetooth headset device according to the present invention.

2 is a block diagram showing another embodiment of a multi-purpose Bluetooth headset device according to the present invention.

3 is a block diagram showing another embodiment of a multi-purpose Bluetooth headset device according to the present invention.

<Description of the symbols for the main parts of the drawings>

1: multi-purpose Bluetooth headset device

10: USB connector

20: charging circuit

21: charge display unit

22: rechargeable battery

30: first switch unit

31: Diode

40: mobile communication terminal connector

41: battery charging pin

50: data communication control device

60: laser LED

61: Fresh LED

70 second switch unit

80: external charging device

90: Bluetooth device unit

91: Bluetooth module

92: stereo codec

93: caller ID display unit

94: LCD control unit

95: DC / DC boost converter

The present invention relates to a multi-purpose Bluetooth headset device, and more particularly, a short distance wireless audio channel connection of a Bluetooth stereo headset and a Bluetooth mobile communication terminal and a hands-free function with a wireless headset are provided, and a caller number is provided through an internal LCD. The present invention relates to a multi-purpose Bluetooth headset device capable of confirming a function and enabling an emergency battery function of a mobile communication terminal using a charged internal rechargeable battery that is compatible with all mobile communication terminals to which the standard communication pin is applied.

The present invention also relates to a multi-purpose Bluetooth headset device capable of simultaneously charging a rechargeable battery and a mobile communication terminal provided inside the apparatus by receiving power from an external charging device or a USB port (PC power).

Recently, the use of Bluetooth hands-free is becoming more common as mobile communication terminals become more common and the use of mobile communication terminals in the world is prohibited by law. As the functions of terminals improve, USB devices for charging and data communication of mobile terminals are becoming more common. It is widely used.

In addition, a mobile communication terminal has a different battery for each manufacturer, so when a new terminal is purchased, a conventional battery cannot be used, and since it is incompatible with each other, the battery can be discarded and used as a waste of the country.

In addition, mobile communication terminals, such as mobile phones and PDAs (Personal Digital Assistants), are used by the user while carrying a dedicated battery. However, these batteries are limited in capacity and must be recharged after a certain period of time. The charger converts 220V power or DC 12V power into DC power suitable for the mobile communication terminal.

However, such a charger is not only inconvenient to carry, but also has a problem that can not be used in places where AC power or DC power is not available. In order to solve this problem, recently, a charging USB data communication cable that can be used to charge the battery of the mobile communication terminal by using a constant voltage power supply of DC 5V provided from the USB port of the PC, but this requires a PC In other mobile device charging station has to be charged, such charging takes more than 20 minutes, it was inconvenient to use when urgent calls. In order to solve this problem, a separate portable rechargeable battery has been developed, but since it has only a charging capacity of 20 to 30 minutes in case of emergency, it only serves as an emergency rechargeable battery, thus making a long call or a long time. There was a problem that was not suitable for use.

The present invention is to solve the above problems of the prior art, it is possible to connect the short-range wireless audio channel and the wireless headset and hands-free function of the Bluetooth stereo headset and Bluetooth mobile communication terminal provided therein, the caller number through the internal LCD It is an object of the present invention to provide a multi-purpose Bluetooth headset device capable of confirming and enabling the emergency battery function of a mobile communication terminal using a charged internal rechargeable battery.

In another aspect, the present invention provides a multi-purpose Bluetooth headset device that can be charged at the same time with a rechargeable battery and a mobile communication terminal provided in the interior of the device by receiving power from an external charging device (AC power) or USB port (PC power). For the purpose of

In addition, the multi-purpose Bluetooth headset device according to the present invention is to provide a multi-purpose Bluetooth headset device capable of charging function even in a GSM type mobile communication terminal.

The present invention also relates to a multi-purpose Bluetooth headset device capable of data communication with a PC or other mobile communication terminal, and can be used as a laser pointer or a flash by using a power source of an internal secondary battery.

In order to achieve the above object, the multi-purpose Bluetooth headset device according to the present invention, a battery for a mobile communication terminal using a USB connector and an external charging device, USB connector is connected to the PC side; A charging circuit unit which controls the charging operation by the constant voltage circuit and the current control method; A charge display unit connected to the charge circuit, the charge display unit comprising a charge display LED indicating a charge state according to a charge current; A rechargeable battery connected to the charging circuit; A first switch unit connected to a terminal connected to the external charging device when the external charging device is connected, and connected to a terminal connected to the USB connector when the external charging device is disconnected; A mobile communication terminal connector having a laser LED connected to the rechargeable battery through a second switch and functioning as a laser pointer, and a battery charging pin of the mobile communication terminal; An external charging device connection unit connected to the external charging device; A Bluetooth device unit including a Bluetooth module wirelessly connected to a mobile communication terminal having a Bluetooth chip and a stereo codec unit for converting digital audio data transmitted and received by the Bluetooth module into an analog / digital signal; Characterized in that it comprises a caller ID display unit for displaying the caller ID of the incoming call from the outside through the LCD control unit connected to the Bluetooth module.

The multi-purpose Bluetooth headset device according to the present invention further comprises a data communication control unit connected to the USB connector and the mobile communication terminal connector to control data communication with a PC and other mobile communication terminals.

In addition, the multi-purpose Bluetooth headset device according to the invention is characterized in that it further comprises a DC / DC boost converter for boosting the voltage charged in the rechargeable battery to the voltage used in the GSM terminal.

Hereinafter, a multi-purpose Bluetooth headset device 1 according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a mobile phone spare battery according to the present invention. As shown in FIG. 1, the multi-purpose Bluetooth headset device 1 according to the present invention includes a USB connector 10, a charging circuit unit 20, a charge display unit 21, a first switch unit 30, It comprises a laser LED 60, a mobile communication terminal connector 40, and an external charging device connection portion 81.

The USB connector 10 is composed of a USB jack connected to the PC side, the 5V PC power is charged through the USB connector 10.

The charging circuit unit 20 controls the charging operation in a constant voltage / current control method, and the charging circuit unit 20 is connected to a charging display unit 21 made of a charging display LED indicating a charging state according to the charging current. The battery 22 is connected. The charging circuit outputs 4.2V of Li-ion battery standard, and the charging current is usually about 100mA ~ 1A, and the charging current is added or subtracted according to the state of charge of the battery. When the rechargeable battery 22 is in a discharged state, the initial charging current is large, and when charged over time, the charging current gradually decreases. When charging is completed, the charging current becomes 0. At this time, the charge indicator LED is turned on to indicate that charging is completed.

The multi-purpose Bluetooth headset device 1 is provided with a mobile communication terminal connector 40 and an external charging device connecting portion 81, the external charging device connecting portion 81 is composed of a mobile communication terminal charging female jack, Here the male jack of the external charging device 80 is connected. The external charging device 80 includes an AC / DC converter and an external charging circuit of a constant voltage / current control method.

The mobile communication terminal connector 40 has a battery charging pin 41 composed of 24 pins or 18 pins, and includes a male jack for charging and data communication of a mobile communication terminal.

The first switch unit 30 is connected to the terminal connected to the external charging device 80 when the external charging device 80 is connected, and to the USB connector 10 when the external charging device 80 is disconnected. Connect with the connected terminal. When the external charging device 80 is connected, a charging voltage of 4.2V is applied to generate a high signal to the control input terminal of the first switch unit 30 and is connected to the third terminal connected to the external charging device 80. Charging is performed by the external charging device 80 to the battery charging pin (PB +) of the mobile communication terminal. When the external charging device 80 is disconnected, a low signal is generated at the control input terminal of the first switch unit 30 and is connected to the first terminal of the first switch unit 30, and through the USB connector 10. A 5V PC power supply is used to charge the mobile communication terminal through the charging circuit unit 20 or simultaneously charge the battery 22 to the charging side.

In addition, as shown in FIG. 2, the said 1st switch part 30 can also be comprised by the diode 31 in this. When the external charging device 80 is connected by replacing the first switch unit 30 with the diode 31, the charging voltage 4.2V performs the charging operation through the diode 31 to the charging pin 41. In this state, when the PC is connected to the USB connector 10, the charging operation is performed by the charging pin 41 through the charging circuit unit 20, and 4.2 V of the external charging device 80 by the diode 31. It will be separated automatically.

The laser LED 60 is connected to the rechargeable battery 22 or the battery charging pin 41 of the mobile communication terminal through the second switch unit 70, and functions as a laser pointer when a user presses a button (not shown). do. In addition, as shown in Figure 2, it is possible to use for a fresh flash used in the dark, instead of a flash LED in place of the laser LED.

In addition, the multi-purpose Bluetooth headset device 1 according to the present invention is connected to the USB connector 10 and the mobile communication terminal connector 40, a data communication control device for controlling data communication with a PC and other mobile communication terminals It is comprised including the part 50 further. The data communication control unit 50 uses a serial method (TX, RX) used by the conventional mobile communication terminal, and is connected to the mobile communication terminal and the PC via USB data communication lines (DM, DP), respectively.

In addition, the multi-purpose Bluetooth headset device 1 according to the present invention includes a Bluetooth module 91 and a stereo codec unit 92 for converting digital audio data transmitted / received by the Bluetooth module 91 into analog / digital signals. A Bluetooth device unit 90 is further provided. As is well known, the Bluetooth module is a digital short-range wireless communication technology using radio waves in the 2.4 GHz band, and is a module capable of stereo audio transmission and headset audio communication with a mobile phone with Bluetooth. The Bluetooth-embedded cellular phone and the Bluetooth module 91 are wirelessly connected, and when a call comes from the outside to the cellular phone, a ring rings to the Bluetooth module. When the call switch is turned on, the cellular phone and the Bluetooth module communicate. It is possible. In addition, if you play the multimedia file (MP3 ..) of the mobile phone in the Bluetooth connection state, the stereo data is transmitted to the Bluetooth module to receive the wireless stereo audio via the stereo codec. The stereo codec unit 92 converts digital audio data transmitted and received from the Bluetooth module 91 to analog or converts analog data into digital audio data.

In addition, the caller ID display unit 93 is connected to the Bluetooth module 91 through the LCD controller 94 so that when a call is received from the outside, the Bluetooth headset device 1 wirelessly connected to the Bluetooth chip of the mobile communication terminal. The caller number is displayed on the caller ID display unit 93 through the LCD control unit 94 so that a wireless call can be made by pressing a call button (not shown) provided in the Bluetooth headset device 1.

In addition, the multi-purpose Bluetooth headset device 1 according to the present invention further includes a DC / DC boost converter 95 connected to the charging circuit unit 20. In some mobile phones of the GSM terminal, when a voltage of 5 V is applied, the rechargeable battery 22 may not perform an external charging function because the rechargeable battery 22 has an output voltage of 3.7 V. Accordingly, the multi-purpose Bluetooth headset device 1 according to the present invention has a function of boosting the output voltage of the 3.7V charged in the rechargeable battery 22 to 5V from the 3.7V voltage so that the GSM terminal can also be used. A boost converter 95 is provided.

The multi-purpose Bluetooth headset device 1 of the mobile communication terminal according to the present invention having the above-described configuration may be configured to have a charge capacity of 300 mAh or more, for example, 300 to 500 mAh. Since the conventional portable charger has a charge capacity of 140 to 180 mAh, the charger can only talk about 20 to 30 minutes in a continuous call using the charger, but according to the battery of the present invention, it is possible to talk for more than 2 hours in a continuous call. Therefore, the battery according to the present invention can be configured as a spare rather than an emergency, compared to conventional portable chargers for emergency and auxiliary use.

The embodiments and drawings attached to this specification are merely to clearly show some of the technical ideas included in the present invention, and those skilled in the art can easily infer within the scope of the technical ideas included in the specification and drawings of the present invention. It is apparent that all modifications and specific embodiments that can be included in the scope of the technical idea of the present invention.

According to the present invention, it is possible to connect a mobile communication terminal and a short distance wireless audio channel to play multimedia (MP3, etc.), to select a volume and a song, and to switch the communication with the mobile communication terminal, so switching to hands-free operation Not only does it reduce the risk of an accident during the call, it also has the advantage of being able to perform various tasks during the call.

In addition, even when the battery of the mobile communication terminal is discharged or in places where external power supply is not possible, the terminal interface (information and communication unit standard 24-pin) of the device according to the present invention can be immediately charged and operated by connecting the mobile communication terminal. .

In addition, the terminal interface of the device is composed of a standard 24-pin terminal of the Ministry of Information and Communication, compatible with all terminals of the standard 24-pin, and can be used continuously even if a new mobile communication terminal is purchased, thereby reducing waste in the country, and the terminal battery is discharged. You can lend it to others to help.

In addition, by connecting the USB port of the unit and the USB port of the PC or AC USB adapter, the unit and mobile communication terminal can be charged and operated at the same time, it can also be used as a laser pointer, and the flash function can be pressed by pressing the flash button. Can be used.

In addition, by using the Bluetooth function of the device according to the present invention, the caller ID can be checked without looking at the mobile communication terminal through the LCD window, and in the case of the GSM terminal, the voltage output from the internal rechargeable battery of the device is connected to the GSM through the booster. As it boosts to the voltage used in, it can charge and operate the internal battery and GSM terminal, and it can send and receive data with PC.

In addition, the device can be charged and operated by supplying power to the GSM terminal in a place without external power.

In addition, according to the present invention, since the charging capacity can be configured to 500mAh or more, when using a conventional charger, only 20 to 30 minutes of continuous calls can be used to solve the discomfort that is more than 2 hours continuous call Since it is possible, it can be configured as a reserve rather than an emergency.

Claims (3)

In the battery for a mobile communication terminal using a USB connector and an external charging device, A USB connector 10 connected to the PC side; A charging circuit unit 20 for controlling the charging operation by the constant voltage circuit and the current control method; A charging display unit 21 connected to the charging circuit 20 and configured of a charging display LED indicating a charging state according to a charging current; A rechargeable battery 22 connected to the charging circuit 20; When the external charging device 80 is connected, it is connected to the terminal connected to the external charging device 80, when the external charging device 80 is disconnected, the first switch unit for connecting with the terminal connected to the USB connector 10 ( 30); A mobile communication terminal connector 40 having a battery charging pin 41 of the mobile communication terminal; A laser LED 60 connected to the battery charging pin 41 through the second switch unit 70 and serving as a laser pointer; An external charging device connection unit 81 connected to the external charging device 80; Bluetooth device having a Bluetooth module 91 wirelessly connected to a mobile communication terminal having a Bluetooth chip embedded therein, and a stereo codec unit 92 for converting digital audio data transmitted / received by the Bluetooth module 91 into analog / digital signals. Section 90; Multi-purpose Bluetooth headset device (1) characterized in that it comprises a caller ID display unit (93) for displaying the caller ID of the incoming call from the outside through the LCD control unit (94) connected to the Bluetooth module (91). The apparatus of claim 1, further comprising a data communication control unit (50) connected to the USB connector (10) and the mobile communication terminal connector (40) to control data communication with a PC and other mobile communication terminals. Multipurpose Bluetooth headset device characterized in that the. The multipurpose Bluetooth headset according to claim 1 or 2, further comprising a DC / DC boost converter (95) for boosting the voltage charged in the rechargeable battery (22) to a voltage used in a GSM terminal. Device.

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