KR20030010421A - Charger apparatus for portable phone capable of connecting to wire telephony network and implementation method thereof - Google Patents

Abstract

PURPOSE: An apparatus for charging a mobile phone connectable with a wire telephone network and a method for realizing the same are provided to make a call by using the mobile phone through a general wire PSTN, thereby improving the convenience of a user and reducing the telephone charges. CONSTITUTION: A telephone part is connected between a PSTN(Public Switched Telephone Network) and a Bluetooth part to interface an incoming call from the PSTN to a combined wireless telephone and mobile phone through the Bluetooth part, and to interface a call originated from the combined wireless telephone and mobile phone to the PSTN through the Bluetooth part. The Bluetooth part is connected between the telephone part and the combined wireless telephone and mobile phone to transmit and receive wireless data.

Description

CHARGER APPARATUS FOR PORTABLE PHONE CAPABLE OF CONNECTING TO WIRE TELEPHONY NETWORK AND IMPLEMENTATION METHOD THEREOF}

The present invention relates to a battery charging device of a mobile phone, and more particularly to a battery charging device having a Bluetooth module.

In general, mobile phones are limited to their use only when they go out, and most of them are used only for receiving at home. In other words, if a mobile phone is used to make a call in the home, the call charge is higher than that of a regular phone, so it is burdensome to use as a substitute for a cordless phone.

However, mobile phones are relatively expensive compared to landline phones, but since many phone numbers are stored in mobile phones, some users may want to search for the desired phone number directly from the mobile phone. You're not using a landline phone that requires manual dialing.

Meanwhile, recently, mobile phones have been developed to enable short-range wireless communication by mounting a Bluetooth module. Bluetooth is a standard that wirelessly connects portable devices such as portable PCs and mobile phones at a low cost within a narrow range. It uses radio frequency to provide voice and data without the need for physical cables for communication between various digital devices. Let me get it. For example, Bluetooth wireless technology can be implemented in mobile phones and laptop computers to connect and use without cables, and virtually any digital device can be part of a Bluetooth system, including personal digital assistants (PDAs), desktops, FAX, keyboards and joysticks. .

In other words, Bluetooth can connect various communication devices such as mobile phones, notebook computers, facsimile, MP3 players, etc. by wireless link, and the detailed transmission standard proposed by Bluetooth has the advantage of protecting data from security and interference. In addition, since the Bluetooth wireless device can be manufactured in the form of a small microchip, it can be easily coupled to communication devices and operates in the 2.4 GHz band, which is a globally compatible frequency band. The Bluetooth standard defines two power levels. The low power level operates only within the distance of the room, and the high power level can be operated throughout the house.

Therefore, an object of the present invention is to connect the desktop charger of the mobile phone used only for charging to a general wired telephone network and connected by a mobile phone and Bluetooth that can function as a cordless phone so that the mobile phone can be used as a substitute for a cordless phone And providing a method.

In order to achieve the above object, the present invention provides a charging device that is connected to an external power source to charge a battery of a cellular phone combined mobile phone, which is connected between a public network and a Bluetooth unit to interface an incoming call from the public network to a cellular telephone combined cell phone through a Bluetooth unit And a telephone unit for interfacing a call originating from the wireless telephone combined mobile phone to the public network through a Bluetooth unit, and a Bluetooth unit connected between the telephone unit and the wireless telephone combined mobile phone to transmit and receive wireless data.

1 is a block diagram of a charger according to a first embodiment of the present invention;

2 is a block diagram of a charger according to a second embodiment of the present invention;

3 is a block diagram of a charger according to a third embodiment of the present invention;

4 is a message flow diagram illustrating a pairing process between a cellular phone and a telephone gate equipped with a Bluetooth module according to an embodiment of the present invention;

5 is a control flowchart showing a registration procedure in a charger of a Bluetooth mobile phone according to the present invention;

6 is a control flowchart showing call processing in a charger according to the present invention;

7 is a flowchart showing call processing when a user responds to a call by a Bluetooth mobile phone according to the present invention;

8 is a control flowchart showing call processing when a user answers a call on a landline telephone according to the present invention;

9 is a control flowchart showing a wireless telephone mode operation in a Bluetooth cellular phone according to the present invention;

10 is a control flowchart when a call is made through a public network in a Bluetooth mobile phone according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Many specific details are provided in the following description and the accompanying drawings to aid a more general understanding of the invention. It is common knowledge in the art that these specific details may be changed or modified within the scope of the invention. It is self-evident for those who have

1 is a block diagram of a charger according to a first embodiment of the present invention.

The charger according to the first embodiment of the present invention includes a phone unit 100, a Bluetooth unit 200, and a charging unit 300. The telephone unit 100 is a ring signal detection circuit 110 for detecting a ring signal of a call received and coupled to the public network 400, a trunk line connection circuit 120 for interfacing audio signals and call commands of a telephone, and a Bluetooth unit ( And a codec 130 connected between the 200 and the CO line 120 to convert the PCM data to the analog voice.

The phone unit 100 is connected between the public network 400 and the Bluetooth unit 200 to interface incoming calls from the public network to the wireless telephone combined use mobile phone 600 through the Bluetooth unit 200. In addition, the telephone unit 100 interfaces a call originating from the wireless telephone combined mobile phone 600 to the public network through the Bluetooth unit 200. Specifically, the ring signal detection circuit 110 of the telephone unit 100 is coupled to a telephone line connected to the public network 400 to detect a ring signal input from the public network and to detect the detected ring signal by the CPU of the Bluetooth unit 200 ( 210). The trunk line connection circuit 120 of the telephone unit 100 is connected between the telephone line connected to the public network 400 and the codec 130 and the CPU 210 of the Bluetooth unit 200 to be received from the public network 400 or the public network ( Interface the audio signal and the call command to 400.

The Bluetooth unit 200 of the charger is composed of an RF transceiver 230 that transmits and receives data through the CPU 210, the memory 220, the PCM interface 240, and the Bluetooth antenna 250. The CPU 210 of the Bluetooth unit 200 according to the present embodiment controls the overall operations of the phone unit 100 and the charging unit 300 as well as the Bluetooth unit 200. Specifically, in the present embodiment, the CPU 210 of the Bluetooth unit 200 is connected to the charging circuit 330 and the voltage control circuit 32 of the charging unit 300 and the ring signal detection circuit 110 and the trunk line of the telephone unit 100. The connection circuit 120 is controlled. The memory 220 stores a program for controlling the CPU 220. The Bluetooth unit 200 also includes an RF transceiver 230 that is connected to the CPU 220 and modulates / demodulates data, and an antenna unit 250 that is connected to the transceiver 230 to transmit and receive data by RF. .

Meanwhile, the charging unit 300 of the charger includes an analog-digital converter 310, a voltage control circuit 320, a charging circuit 330, and a charging terminal 340. The charging unit 300 is connected to the external input power source 500 to receive external power, and when the battery is connected to the charger to charge the battery. The configuration and operation of the charging unit 300 is similar to that of a conventional charger and a detailed description thereof will be omitted. As described above, according to the first embodiment of the present invention, a mobile phone can be connected to a public network through a charger and used as a wireless phone.

2 is a block diagram of a charger according to a second embodiment of the present invention.

The charger according to the second embodiment of the present invention is configured in the same manner except that the charger is provided with the first embodiment and two CPUs. That is, according to the second embodiment, one CPU is provided in the phone unit 100 and the other CPU is provided in the Bluetooth unit 200.

In other words, in the first embodiment of the present invention, the phone unit, the Bluetooth unit, and the charging unit are all controlled by the CPU in the blue pitcher 200, but in the second embodiment, the Bluetooth unit 200 is connected to the Bluetooth unit 200. The control unit is controlled by the CPU 210 and the remaining phone unit 100 and the charging unit 300 have a configuration controlled by the CPU 150 in the charging unit 100. That is, the CPU 150 of the telephone unit 100 connects the ring signal detection circuit 110 and the trunk line connection circuit 120 and the voltage control circuit 320 and the charging circuit 330 of the telephone unit 100 to each other. The CPU 210 of the Bluetooth unit controls the memory 22, the RF transceiver 230, and the PCM interface 240. The two CPUs send and receive data through a mutual Universal Asynchronous Receiver-Transmitter (UART) interface.

As described above, the second embodiment of the present invention can be implemented with almost no modification of the configuration of the conventional telephone apparatus and the configuration of the Bluetooth module, and the cellular phone can be used as a wireless telephone by connecting to the public network through a charger.

3 is a block diagram of a charger according to a third embodiment of the present invention.

The charger according to the third embodiment of the present invention is configured in the same manner as the first embodiment described above except for the phone unit 100. The telephone unit 100 according to the third embodiment of the present invention includes an audio signal path control circuit 160, a key input circuit 170, and an audio signal amplifier unit in addition to the configuration of the telephone unit 100 according to the first embodiment. 180, a microphone 192, and a speaker 194 are provided. The microphone 192 and the speaker 194 function as a handset of a conventional telephone. The audio signal amplifier 180 amplifies the signals input and output through the microphone 192 and the speaker 194. The audio signal path control circuit 160 switches or synthesizes signals input and output through the microphone 192 and the speaker 194 and signals input through the codec 130 from the Bluetooth unit 200. In addition, the key input circuit 170 allows the charger to dial itself. The charger can thus function as a conventional landline telephone. Therefore, the charger according to the third embodiment of the present invention can function as a normal landline telephone and at the same time a cellular phone can be used as a wireless telephone.

4 is a message flow diagram illustrating a pairing process between a cellular phone and a mobile phone gate having a Bluetooth module according to an embodiment of the present invention.

According to the present invention, in order to use a mobile phone as a wireless telephone by connecting a charger and a wireless telephone combined mobile phone connected with a wired network by Bluetooth wireless communication, they should be paid. This paying means registering a cordless phone that can be used by connecting from a charger to Bluetooth. The primary purpose of this pairing is to prevent other phones from connecting to the charger and making connections over the wired network. The pairing procedure will be described below.

First, the mobile phone 600 transmits a registration request message BTMM_inquire_req to find out whether there is a nearby phone gate in step 10. In response to this registration request message, a predetermined number of telephone gates, i.e., the charger, transmit a response message BTMM_inquire_ind to the mobile phone in steps 12 and 14. Accordingly, the mobile phone 600 transmits a message BTMM_read_remote_name_req to the telephone gate found in step 16 requesting to transmit the Bluetooth address of the telephone gate. If the phone gate transmits its Bluetooth address to the mobile phone 600 in step 18, the mobile phone 600 can obtain a list of phone gates found in the vicinity. The mobile phone 600 selects the telephone gate to be registered by the user in step 20 by transmitting a Bluetooth message BTSM_pair_req. The selected phone gate receives the message BTSM_pair_req and requests the cellular phone to send the Bluetooth message BTSM_pin_ind for user rights authentication, described below in step 22. The user authority authentication process is divided into a case where there is no key input unit and a case where there is no key input unit. The telephone gate requires a password of the selected telephone gate if the cellular phone has a key input unit. If your phone doesn't have a key input, you can either turn it off and turn it on again, or you can check if a Bluetooth phone that meets the Desktop Top Charger specifications is inserted into your desktop charger. Accordingly, the mobile phone requires the user to enter a password. When the user enters the Bluetooth pin (BT_PIN) number of the telephone gate, the cellular phone transmits to the telephone gate as a message BTSM_pin_res (accep = TURE) in step 24. The phone gate determines whether the transmitted Bluetooth pin number is valid. After that, if the transmitted Bluetooth pin number is valid, the phone gate transmits the registration to the Bluetooth mobile phone as a Bluetooth message BTSM_pin_cfm (accept = TURE) and stores the mobile phone's Bluetooth address BD_ADDR in the pairing list. The telephone gate will only allow CO calls with Bluetooth mobile phones included in the pairing list in the future, and the maximum number of mobile phones that can be included in this pairing list is three.

5 is a control flowchart illustrating a registration procedure in a charger of a Bluetooth mobile phone according to the present invention.

First, the charger determines whether the Bluetooth mobile phone is mounted in the charger in step 602. If the mobile phone is mounted on the charger, the mobile phone is charged in step 604, otherwise the flow proceeds to step 606. The charger determines whether the Inquiry scan mode can be entered in step 606. In this case, the Inquiry scan mode is defined in the Bluetooth specification 1.0. The Inquiry scan mode is a state that can receive the Inquiry of another Bluetooth device and inform the Bluetooth address. This Inquiry scan mode can be entered in the following conditions: 1. The mobile phone that meets the current specifications of the charger is mounted, 2. After pressing the Bluetooth function key on the charger within a certain time, and 3. pressing the Bluetooth function key on the charger. It means a state within a certain time after entering the charger password (if the charger has a key input unit) and a state within a certain time after the charger is turned on. If the charger is capable of entering Inquiry scan mode, the charger enters Inquiry scan mode in step 608. The charger continues in step 610 to determine if there is a registration request from the Bluetooth mobile phone. If there is a registration request from the mobile phone, the charger determines in step 612 if the limited number of registered mobile phones is exceeded and then determines in step 614 whether the password from the mobile phone is correct. The charger stores the wireless telephone license registration so that the mobile phone can be used as a wireless telephone in step 618 if the password from the mobile telephone is justified. The charger is then in standby to make a call by the mobile phone at step 620. If the user requests that the registered mobile phone be deleted in step 622, the charger erases all registered mobile phones in step 624.

6 is a control flowchart showing call processing in the charger according to the present invention. According to the present invention, the charger connects a call from the public network to a wireless telephone combined mobile phone via Bluetooth wireless communication and connects a call from the mobile phone to the public network.

First, the charger determines in step 702 whether there is a call incoming from the public network. If there is a call incoming from the public network, the charger outputs a ring signal to the landline telephone at step 704. The charger then determines whether there is a licensed Bluetooth mobile phone in step 706. This determination is made by whether there is a mobile phone licensed by the above-described registration procedure.

The charger establishes a Bluetooth connection in step 718 and outputs a ring signal to the Bluetooth cell phone in step 720 if the licensed Bluetooth cell phone is in a cordless phone mode. The charger determines in step 722 whether the user responds to the incoming call on the landline telephone and in step 724 determines whether the user answers the incoming call on the Bluetooth cellular phone. If the user answers the incoming call with the genetic telephone, go to B. If the user answers the incoming call with the Bluetooth mobile phone, proceed to process A.

7 is a control flowchart showing call processing when a user responds to a call by a Bluetooth mobile phone.

The charger determines whether the Bluetooth connection is maintained at step 726 when the user answers the call on the Bluetooth cellular phone. If the Bluetooth connection is not maintained, the process proceeds to step 728 to reset the Bluetooth connection, and if the Bluetooth connection is maintained, the process proceeds to step 730. The charger opens the SCO link in step 730. Accordingly, the user can make a call through the public network using a Bluetooth mobile phone. In other words, the charger opens an SCO link with the Bluetooth cell phone to allow the user to use the Bluetooth cell phone as a cordless phone at step 732. The charger then determines in step 734 whether the user changes from a Bluetooth cell phone to a landline phone and makes a call. If the user changes the call to the landline, proceed to process B. The charger determines whether the user has terminated the call in step 736. The charger proceeds to step 740 if the user has terminated the call and returns to step 732 if the call continues. The charger closes the SCO link in step 740 when the call ends and then releases the Bluetooth connection in step 742.

8 is a control flowchart showing call processing when a user responds to a call by a landline telephone according to the present invention.

The charger allows the user to talk to the landline phone at step 760 when the user answers the call on the landline phone. The charger then determines in step 762 whether the user has switched to the Bluetooth mobile phone from the landline phone. The charger proceeds to process A when the user changes the call to the Bluetooth cell phone. If the user continues to talk on the landline phone, the charger proceeds to step 764 to release the Bluetooth connection. The charger then detects the end of the call at step 768 and returns to step 760 if it is still busy.

9 is a control flowchart illustrating a wireless telephone mode operation in a Bluetooth cellular phone according to the present invention.

First, the mobile phone 600 determines whether the mobile phone is busy in step 802 and proceeds to step 804 if the mobile phone is not in use. The mobile phone 600 determines in step 804 whether the wireless phone mode is allowed. Mobile phone 600 then determines if there is a paired Bluetooth charger at step 806 and proceeds to step 814 to switch to wireless phone mode. The mobile phone 600 determines whether there is a call call from the public network in step 816 after switching to the wireless phone mode, and proceeds to step 822 to output a ring signal if there is a call call from the public network. The mobile phone 600 determines whether the user responds in step 824 and performs normal call processing when the user responds. Thereafter, the mobile phone 600 determines whether the call has ended in step 828, and terminates the control flow when the call ends.

If it is determined in step 816 that there is no call call from the public network, the mobile phone 600 proceeds to step 818 to determine whether there is a call call to the mobile number. If there is a call call to the mobile number, the flow proceeds to step 820 to switch to the mobile phone mode and can be used as a normal mobile phone.

10 is a flowchart illustrating a case where a call is made through a public network in a Bluetooth mobile phone according to the present invention.

First, mobile phone 600 determines whether it is in a wireless phone mode in step 850. When the user wants to make a call through the public network using the mobile phone 600, the user can switch to the wireless phone mode. If the mobile phone 600 is not in the wireless phone mode, the mobile device 600 may proceed to step 852 to function as a normal mobile phone. Mobile phone 600 is removed at step 854 It asks for a Bluetooth connection and determines whether the result is a success or a failure. If the cellular phone 600 is connected to the Bluetooth charger via Bluetooth communication, the cellular phone 600 outputs a ringback tone signal in step 858 and proceeds to step 860 to perform call processing. Thereafter, the mobile phone 600 determines whether the call has ended in step 862, and terminates the control flow when the call ends.

If the mobile phone 600 determines that the connection with the Bluetooth charger has failed in step 854, the mobile phone 600 proceeds to step 870 and displays, for example, an "Out of Range" message. The user sees this message and can then use his mobile phone to go to an area where he can make calls to the public network. The mobile phone 600 then switches to the mobile phone mode in step 872 to be used as a normal mobile phone.

As such, the present invention enables the desktop charger of the mobile phone used only for charging to be connected to a general wired telephone network, and is connected by a mobile phone and a Bluetooth capable of functioning a wireless phone so that the mobile phone can be used as a substitute for the wireless phone.

As described above, according to the present invention, a mobile phone can be used to make a call through a general wired public network, thereby contributing to the user's convenience as well as saving telephone costs.

Claims (13)

A charging device connected to an external power source to charge a battery of a cordless telephone combined mobile phone, A telephone unit connected between the public network and the Bluetooth unit to interface incoming calls from the public network to the cellular phone combined mobile phone through the Bluetooth unit, and to interface a call originating from the cellular phone combined mobile phone to the public network through the Bluetooth unit; Charging device characterized in that it is connected between the telephone unit and the mobile phone combined phone and the Bluetooth unit for transmitting and receiving wireless data. According to claim 1, wherein the telephone unit is coupled to the public network ring signal detection circuit for detecting a ring signal of the call received, a trunk line connection circuit for interfacing audio signals and call commands of the telephone, and a connection between the Bluetooth unit and the trunk line connection circuit And a codec for converting the PCM data-analog voice. According to claim 1, wherein the Bluetooth unit is a control unit for controlling the operation of the Bluetooth unit, a memory for storing a program for controlling the control unit, a PCM interface circuit connected to the telephone unit for transmitting and receiving PCM data, is connected to the control unit An RF transceiver comprising a RF transceiver for modulating / demodulating, and an antenna unit connected to the RF transceiver for transmitting and receiving data in RF. The charging device of claim 3, wherein the controller of the Bluetooth unit controls a charging operation of the charging device and an operation of the telephone unit. The telephone unit of claim 3, wherein the telephone unit is configured to control an operation of the telephone unit, a memory to store a program for controlling the controller, a ring signal detection circuit to detect a ring signal of a call coupled to and received from a public network, and audio of a telephone. And a codec connected between the Bluetooth unit and the trunk line connecting circuit to convert a PCM data-analog voice. The charging device according to claim 5, wherein the codec of the telephone unit and the PCM interface circuit of the Bluetooth unit perform voice interface in a PCM format. The charging device according to claim 5, wherein the control unit of the telephone unit and the control unit of the Bluetooth unit interface HCI data packets. The charging device of claim 2, wherein the telephone unit further comprises a key input unit. The charging device of claim 2, wherein the telephone unit further comprises a speaker and a microphone. In the charging device including a Bluetooth module, a wired connection to the public network and connected to the wireless cell phone and the mobile phone to perform a call processing, Detecting a telephone call from the public network; Setting up a Bluetooth connection with the cellular phone; Outputting a ring signal to the cellular phone; And responding to the wireless telephone combined mobile phone, transmitting and receiving voice data through a Bluetooth connection to establish a call connection. In the charging device including a Bluetooth module, a wired connection to the public network and connected to the wireless cell phone and the mobile phone to perform a call processing, Detecting a telephone call from the wireless telephone combined mobile phone to a public network; Establishing a Bluetooth connection when there is a call call from the wireless telephone combined mobile phone to the public network; Requesting the call to the public network; Outputting a ringback tone signal through the wireless telephone combined mobile phone; And if there is a response from the public network, transmitting and receiving voice data through a Bluetooth connection and making a call connection. A wireless telephone combined cell phone including a Bluetooth module and connected to a publicly connected Bluetooth device via a Bluetooth network to perform call processing, Receiving a call call from the Bluetooth device to a public network; Outputting a ring signal for the call; And if the user responds, transmitting and receiving voice data with the public network through a Bluetooth connection and making a call connection. A wireless telephone combined cell phone including a Bluetooth module and connected to a publicly connected Bluetooth device via a Bluetooth network to perform call processing, Transmitting a call request message to the Bluetooth device when a call is attempted by a user; Outputting a ringback tone signal from the Bluetooth device; And if there is a response from the public network, transmitting and receiving voice data through a Bluetooth connection and making a call connection.