KR20020057305A - Cellular phone capable of communicating by bluetooth protocol - Google Patents

Abstract

PURPOSE: A mobile station enabling Bluetooth communication is provided to enable a bluetooth communication service and a mobile communication service by embedding a Bluetooth chip and designing PCM data inputted through a Bluetooth local network and a wide area network, and share the equal codec. CONSTITUTION: A Bluetooth module(100) performs wireless local communication with Bluetooth peripherals. If a user selects a mode of a mobile station in a mobile telecommunication mode, a hands-free mode, and a PSTN mode, an MSM(Mobile Station Modem)(200) outputs a path set control signal corresponding to the selected mode. The MSM(200) processes modulation and demodulation of voice, character, and image data, and performs vocoder function as well as various control functions. If receiving PCM voice data from the Bluetooth module(100) or the MSM(200), a codec(300) converts the received PCM voice data to analog signals. If receiving analog voice data, the codec(300) converts the analog voice data to digital signals for outputting to the Bluetooth module(100) or the MSM(200). If receiving the path set control signal from the MSM(200), a path set part(400) switches connections between the Bluetooth module(100) and the codec(300), the Bluetooth module(100) and the MSM(200), or the MSM(200) and the codec(300) to be correspondent to the control signal.

Description

CELLULAR PHONE CAPABLE OF COMMUNICATING BY BLUETOOTH PROTOCOL}

The present invention relates to a terminal capable of Bluetooth communication, and more particularly, a PCM (Pulse Code Modulation; hereinafter referred to as "PCM") coming in through a short-range Bluetooth network while simultaneously embedding a Bluetooth chip in a mobile communication terminal. The present invention relates to a Bluetooth communication terminal capable of providing both a Bluetooth communication service and a mobile communication service by designing the data and the PCM data coming through a remote network to share the same codec.

As is well known, Bluetooth refers to wireless short-range communication that enables two-way real-time communication without connecting complicated wires by connecting computers and peripheral devices, mobile terminals, computers, and home appliances that are located in a short distance. In recent years, Bluetooth has emerged as an important component of not only computers and home appliances but also third generation digital mobile communication represented by International Mobile Telecommunication (IMT-2000). When data transmission between devices is required in a home or office, wireless communication between devices is performed directly through devices without passing through a remote base station. Thus, high-speed data transmission without waiting time is possible without placing a communication load on a base station. It is a service.

This eliminates the inconvenience of having to connect and maintain communication lines in the home, thereby facilitating the convergence between information devices such as computers and communication devices such as telephones. Since 1998, European and American countries have established and promoted universal short-range high-speed wireless data interface standards. As a result, Ericsson, International Business Machine Corporation, Intel, Toshiba Standards and support systems such as Bluetooth, Mobile Station (MS), and HomeRF, which Symbionics claims, have emerged. Among other standards, Bluetooth is highly versatile and can be implemented at the lowest cost, so it is likely to be attached to all information devices in a short time. The typical user model seen from the Bluetooth user side is the 3-in-1 phone, which is an extension phone in the office, a cordless phone and a short-range walkie-talkie indoors, and a mobile phone outdoors.

On the other hand, Bluetooth is designed to be installed in all the information equipment used in homes and offices to configure a wireless network to be able to interwork with any wired / wireless network. Therefore, when the ultra short-range wireless network including Bluetooth is completed, all data devices (especially laptops and portable terminals) are freely exchanged data, and when the Internet bridge is formed, an optical cable, an asynchronous digital subscriber line (ADSL), a modem ( Modem, etc., until the Internet information reaching the desktop computer can reach the user's hand. In other words, it can be seen as the completion of the goal of exchanging any type of information anytime, anywhere, anyone, the ultimate goal of wireless communication. The development of low cost wireless access system and components for this is in progress. Accordingly, the present invention is an implementation technology related to a 3-in-1 phone equipped with a Bluetooth chip.

However, since conventional mobile communication, that is, code division multiple access (CDMA), personal communication service (PCS), and IMT-2000 terminal is not equipped with a Bluetooth chip or module, mobile communication services such as CDMA, PCS, IMT-2000, etc. Is possible, but wireless local area network (Bluetooth network) services such as wireless hands-free, wireless public switched telephone network (PSTN) communication, and near field radio function are not available indoors. .

Accordingly, the present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to install a wireless local area network (Bluetooth network) interface to a mobile communication terminal providing a wireless long range network (CDMA, PCS) service In a local area network service area, not only to enable cheap local area network communication, but also to provide a terminal capable of Bluetooth communication to allow communication through a telecommunication network in other areas.

In order to achieve the above object, a Bluetooth communication terminal of the present invention includes a Bluetooth chip in a terminal capable of Bluetooth communication supporting both wireless long-range and short-range communication.

A Bluetooth module for performing wireless short-range communication with Bluetooth peripheral devices;

When the user selects any one of the mobile communication mode, the hands-free mode, and the PSTN mode, a corresponding routing control signal is output, and the modulation, demodulation processing, and vocoder of voice, text, and video data are performed according to the user-set mode. MSM that performs various functions while performing a function;

A codec for converting the PCM voice data from the Bluetooth module or the MSM into an analog signal and outputting the converted analog signal, and converting the analog voice data into a digital signal and outputting the analog signal to the Bluetooth module or the MSM; And

Receiving a routing control signal from the MSM comprises a routing setting unit for switching the connection between the Bluetooth module and the codec, between the Bluetooth module and the MSM, or between the MSM and the codec to correspond to the control signal. It features.

1 is a functional block diagram showing the configuration of a terminal capable of Bluetooth communication according to an embodiment of the present invention;

2 is a functional block diagram illustrating a configuration of a path setting unit in a terminal capable of Bluetooth communication according to FIG. 1;

3 is a functional block diagram showing another configuration of a route setting unit in a terminal capable of Bluetooth communication according to FIG. 1;

4 is a functional block diagram illustrating a state in which a path setting unit according to FIG. 3 is switched to a PSTN mode;

5 is a reference diagram illustrating an operating environment of a terminal capable of Bluetooth communication according to FIG. 1.

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

100: Bluetooth module 200: MSM

300: codec 400: path setting unit

410: multiple mux 420: PLD

431: 2 port mux 432: first buffer

433: second buffer

Hereinafter, a terminal capable of Bluetooth communication according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a functional block diagram of a Bluetooth communication terminal according to an embodiment of the present invention, the Bluetooth communication terminal according to an embodiment of the present invention Bluetooth module 100, MSM (Mobile Station Modem) (200) ), A codec 300, and a path setting unit 400.

The Bluetooth module 100 is a module installed in the terminal and manages a Bluetooth network and a link. When receiving a peripheral device search command from the MSM 200 during Bluetooth communication, indoor Bluetooth peripheral devices currently present in its surroundings, that is, After finding devices such as access points, wireless handsfree, and notebooks connected to the PSTN network, the list is reported to the MSM 200, and voice, text, and video data with the peripheral devices are then reported. Serves to perform wireless local area communication.

In addition, the MSM 200 is a modem that performs various demodulation processing and vocoder functions of voice, text, and video data, and performs various control functions in a terminal. The MSM 200 includes one of a mobile communication mode, a handsfree mode, and a PSTN mode. If the mode is selected, the corresponding path setting control signal is output to the path setting unit 400, and after receiving the voice data according to the mode set by the user, it is converted into PCM data and transmitted to the codec 300. It plays a role.

Meanwhile, when the codec 300 receives the PCM voice data from the Bluetooth module 100 or the MSM 100, the codec 300 converts the PCM voice data into an analog signal and outputs the same to the speaker 1, while the microphone ( When receiving the analog voice data from 2) converts it to a digital signal and then outputs to the Bluetooth module 100 or the MSM (200).

In addition, when the path setting unit 400 receives the path setting control signal from the MSM 200, the path setting unit 400 is between the Bluetooth module 100 and the codec 300 and the Bluetooth module 100 to correspond to the control signal. It serves to switch the connection between the MSM 200, or between the MSM 200 and the codec 300, as shown in Figure 2 multiple mux 410 or PLD (Program Logic Device) 420 Can be implemented.

At this time, the MUX 410 or the PLD 420 mounted in the routing unit 400 receives all of the routing control signals '00' from the 2-port control line of the MSM 200. When the path is blocked and the routing control signal '01' is received from the 2-port control line of the MSM 200, the Bluetooth module 100 and the MSM 200 are connected to each other. Upon receiving a routing control signal of '10' from a port control line, the MSM 200 and the codec 300 are connected, and a routing control signal of '11' is received from a two-port control line of the MSM 200. When received, it serves to connect the Bluetooth module 100 and the codec 300.

Meanwhile, as another implementation plan of the route setting unit 400, as illustrated in FIG. 3, the path setting unit 400 may be implemented using a two-port mux 431, a first buffer 432, and a second buffer 433.

At this time, the 2-port MUX 431 mounted in the path setting unit 400 may input / output data (Din, Dout) and data input of the Bluetooth 100 of the MSM 200 and the codec 300. Is connected between the output terminals Din and Dout, and blocks all paths when a NO PASS routing control signal of '00' is received from the two-port control line of the MSM 200, and the MSM 200 is blocked. When a hands-free routing control signal of '01' is received from the 2-port control line of the control panel, the data input terminal (Din) of the Bluetooth module 100 and the data output terminal (Dout) of the MSM 200 are connected to each other. When the data output terminal Dout of the module 100 and the data input terminal Din of the MSM 200 are connected, and a PSTN routing control signal of '10' is received from the 2-port control line of the MSM 200, Data input terminal Din of the Bluetooth module 100 and data of the codec 300 And simultaneously connected to an output terminal (Dout) serves to connect the data input terminal (Din) of the data output (Dout) and the codec (300) of the Bluetooth module 100.

In addition, the first buffer 432 mounted in the path setting unit 400 may be mounted between the data input terminal Din of the MSM 200 and the data output terminal Dout of the codec 300 to provide the MSM 200. ) Is a buffer for achieving stabilization between the codec 300 and the data input terminal Din of the MSM 200 and the data output terminal of the codec 300 when receiving the enable control signal from the MSM 200. Dout) is connected, and upon receiving the disable control signal from the MSM 200, it blocks the data input terminal Din of the MSM 200 and the data output terminal Dout of the codec 300.

Meanwhile, a second buffer 433 mounted in the path setting unit 400 is mounted between the data output terminal Dout of the Bluetooth module 100 and the two port mux 431 to provide the Bluetooth module 100 with the Bluetooth module 100. As a buffer for stabilization between the two-port mux 431, upon receiving an enable control signal from the MSM 200, the data output terminal (Dout) and the two-port mux 431 of the Bluetooth module 100 are connected. On the other hand, upon receiving the disable control signal from the MSM 200, the data output terminal Dout of the Bluetooth module 100 and the two port mux 431 are blocked.

Next, an operation process of a terminal capable of Bluetooth communication according to an embodiment of the present invention having the above configuration will be described. In this case, the data transmission / reception process of the Bluetooth communication and the mobile communication (CDMA, PCS) will be described. The data transmission / reception process of IMT-2000 is already known in the protocol specification and will be omitted, and the transfer process of PSTN communication, wireless hands-free communication, and mobile communication will be described in full with the object of the present invention. Shall be.

First, an operation process of a terminal capable of Bluetooth communication according to an embodiment of the present invention in which the path setting unit 400 of FIG. 2 is mounted will be described with reference to FIGS. 1, 2, and 5.

Initially, the terminal user selects various modes via a key input not shown according to his current position.

At this time, when the user selects the terminal in the mobile communication mode as it is located outdoors as shown in FIG. 5, the MSM 200 transmits a routing control signal of '10' through the two-port control line to the route setting unit 400. Output to multiple mux 410 or PLD 420. Then, the MUX 410 or the PLD 420 receives a routing control signal of '10' from the MSM 200 and then the MSM 200 and the codec 300 as shown in path 2 of FIG. 2. Connect the remote mobile communication.

On the other hand, if the user selects the terminal in the PSTN mode as the indoor location as shown in Figure 5, the MSM 200 is a routing control signal of '11' through the two-port control line in the route setting unit 400 Output to multiple mux 410 or PLD (420). Then, the multi-mux 410 or the PLD 420 receives a routing control signal of '11' from the MSM 200 and then the Bluetooth module 100 and the codec 300 as shown in path 3 of FIG. ) To proceed with PSTN communication.

In addition, when the user selects the terminal in the hands free mode as shown in FIG. 5, the MSM 200 transmits a routing control signal of '01' through the two port control line in the route setting unit 400. Output to multiple mux 410 or PLD (420). Then, the MUX 410 or the PLD 420 receives the routing control signal '01' from the MSM 200 and then the Bluetooth module 100 and the MSM 200 as shown in path 1 of FIG. 2. ) To proceed with wireless hands-free communication.

When the user selects the NO PASS mode, the MSM 200 transmits a routing control signal of '00' through the 2-port control line to the multiple mux 410 or the path setting unit 400. Output to the PLD 420. Then, the multi mux 410 or the PLD 420 blocks all passes after receiving the routing control signal '00' from the MSM 200 to block all communication.

At this time, in addition to the method of changing each mode by the user's manual operation as described above, the method to automatically change the routing control signal according to each mode after identifying the position of the terminal itself by the MSM (200) It can be implemented by design.

Meanwhile, hereinafter, an operation process of a terminal capable of Bluetooth communication according to an embodiment of the present invention equipped with the path setting unit 400 of FIG. 3 will be described with reference to FIGS. 1, 3, 4, and 5. Shall be.

Initially, the terminal user selects various modes via a key input not shown according to his current position.

At this time, when the user selects the terminal in the mobile communication mode as it is located outdoors as shown in FIG. 5, the MSM 200 sends a routing control signal of '00' through the two-port control line to the route setting unit 400. ) Is output to the 2-port mux 431. Then, the two-port mux 431 blocks the path after receiving the routing control signal '00' from the MSM 200. Therefore, the MSM 200 proceeds the long-distance mobile communication of voice, text, and video data received from the mobile communication network through data transmission / reception with the codec 300.

On the other hand, when the user selects the terminal in the PSTN mode as the indoor location as shown in Figure 5, the MSM 200 is a routing control signal of '10' through the two-port control line in the route setting unit 400 2 port mux 431 to output. Then, the 2 port mux 431 receives the routing control signal of '10' from the MSM 200 and switches the path as shown in FIG. 4 to connect the Bluetooth module 100 and the codec 300. Simultaneously proceeds with PSTN communication. At this time, the connection between the MSM 200 and the codec 300 is all blocked by the control of the MSM 200.

In addition, when the user selects the terminal in the hands free mode as shown in FIG. 5, the MSM 200 transmits a routing control signal of '01' through the two port control line in the route setting unit 400. 2 port mux 431 to output. Then, the two-port mux 431 receives the routing control signal '01' from the MSM 200 and switches the path as shown in FIG. 3 to connect the Bluetooth module 100 and the MSM 200. Simultaneously, wireless hands-free communication is carried out. At this time, the connection between the MSM 200 and the codec 300 is all blocked by the control of the MSM 200.

At this time, in addition to the method of changing each mode by the user's manual operation as described above, the method to automatically change the routing control signal according to each mode after identifying the position of the terminal itself by the MSM (200) It can be implemented by design.

As described above, according to the terminal capable of Bluetooth communication according to the present invention, when the Bluetooth interface is implemented in the mobile communication terminal, both the Bluetooth codec and the PCM data coming from the local Bluetooth network and the PCM data coming from the remote network have the same codec. Designed to be shared, it provides convenience to producers by making it easier to implement Bluetooth interface on the inside and outside of the terminal, while allowing users to make calls using cheap LAN in the LAN service area. In other areas, it is possible to communicate via a telecommunication network, thereby increasing the efficiency of the terminal.

Claims (3)

In a terminal capable of Bluetooth communication that is built-in Bluetooth chip to support both wireless long-distance and short-range communication, A Bluetooth module for performing wireless short-range communication with Bluetooth peripheral devices; When the user selects any one of the mobile communication mode, the hands-free mode, and the PSTN mode, a corresponding routing control signal is output, and the modulation, demodulation processing, and vocoder of voice, text, and video data are performed according to the user-set mode. MSM that performs various functions while performing a function; A codec for converting the PCM voice data from the Bluetooth module or the MSM into an analog signal and outputting the converted analog signal, and converting the analog voice data into a digital signal and outputting the analog signal to the Bluetooth module or the MSM; And Receiving a routing control signal from the MSM comprises a routing setting unit for switching the connection between the Bluetooth module and the codec, between the Bluetooth module and the MSM, or between the MSM and the codec to correspond to the control signal. Characterized by the Bluetooth communication terminal. The method of claim 1, The path setting unit blocks all paths when receiving a routing control signal of '00' from the MSM, and connects the Bluetooth module and the MSM when the routing control signal of '01' is received from the MSM. Upon receiving a routing control signal of '10' from the MSM, the MSM and the codec are connected. When receiving a routing control signal of '11' from the MSM, the MUX or PLD connects the Bluetooth module and the codec. Bluetooth communication terminal, characterized in that configured. The method of claim 2, When the path setting unit receives a hands-free routing control signal from the MSM, the path setting unit connects the data input terminal of the Bluetooth module and the data output terminal of the MSM and at the same time connects the data output terminal of the Bluetooth module and the data input terminal of the MSM. A two-port mux connecting the data input terminal of the Bluetooth module and the data output terminal of the codec while receiving the PSTN routing control signal from the MSM, and connecting the data output terminal of the Bluetooth module and the data input terminal of the codec; A first buffer connecting or blocking a data input terminal of the MSM and a data output terminal of the codec under the control of the MSM; And And a second buffer configured to connect or block the data output terminal of the Bluetooth module and the two port mux under the control of the MSM.