KR100262157B1 - Cellular phone with base station function - Google Patents

Abstract

PURPOSE: A mobile phone having base station functions is provided to support both terminal mode and base station mode so as to reduce numbers of base stations. CONSTITUTION: A key pad(10) sets up terminal mode and base station mode of a mobile phone. A micom(20) controls communication line and communication channel for terminal mode and base station mode set up through the key pad(10). An LCD(Liquid Crystal Display) driver(120) and LCD panel(130) display setup process. A power unit(140) supplies powers for mobile phone operations. An EEPROM registers at least more than one terminal under the base station mode. A central office connection unit switches call signals and voice signals through phone line under base station mode. The central office connection unit is composed of a ring signal detection unit, a phone line interface unit, a communication line detection unit, and a voice network. A connector holder which connects a connector of a phone line is established under the base station mode.

Description

Mobile phone with base station function

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile phone having a base station function, and more particularly, to a mobile phone having a base station function for adding a base station function to a CT2 terminal as a mobile phone to function as a base station apparatus at home.

As is well known, in order to solve the disadvantage that the mobility of the subscriber terminal connected to the switching system is guaranteed only within an extremely limited range, an outgoing call, now called 'CT2 (Cordless Telephone-Second Generation)' A dedicated mobile phone or a PCS (Personal Communication Service) terminal capable of sending / receiving is applied to practical use so that it can be used in a state that guarantees subscriber mobility.

Among them, a mobile telephone called CT-2 is a form developed from a conventional wireless telephone (i.e., CT-1), and is designed for transmission only within a certain distance from a base station by a digital method.

1 is a block diagram showing the configuration of a cellular phone according to a conventional example.

In the figure, reference numeral 10 denotes a keypad portion defined on the outer surface of a corresponding cellular phone, in which the keypad portion 10 typically has a 10-key for manipulation of the called number and a called number operated by the 10-key. Send key for calling, the LCD (Liquid Crystal Display) panel for displaying the operation status of the 10-key, the operation state of the corresponding mobile phone or the current time visually, A function key for selective operation of a specific function designed for the cellular phone, a power key for ON / OFF control of a power supply, and the like are provided.

In FIG. 1, reference numeral 20 denotes wireless output of a dialing signal for call of a called party or control of a transmission / reception path of a voice signal in response to an operation state from the keypad unit 10, the keypad unit 10 As a microcomputer that is in charge of control of the execution of a specific function selected from the microcomputer 20, the microcomputer 20 is preferably a dialer, an audio signal path controller, and an RF signal for transmitting / receiving an audio signal. An integrated circuit of 'Am79C410A', in which a processing means or the like is designed integrally is employed.

In addition, in FIG. 1, 30 denotes a receiver side that wirelessly transmits a radio signal (that is, a call signal / voice signal) to be transmitted to the base station side under the control of the microcomputer 30 from the antenna 40 or is received through the antenna 40. An RF unit for relaying a radio signal (call answer signal / audio signal) from the microcomputer 30 is shown. The RSSI (between the RF unit 30 and the RF signal processing means of the microcomputer 20) is displayed. Receive Signal Strength indicator), CMOS-level 72KHz digital receiving data CT2RX, active high strobe signal RXEN indicating CT2 receiving window for enabling receiver to IF and RF circuitry, DC level between receiver receiving receiver Sample / hold control signal SHCTR for holding as a divider, active high strobe signal TXEN indicating CT2 transmission window for enabling the transmitter to IF and RF circuits, top of modulator The output TXI, TXQ, the reference signal of the modulator MREF, FREECH, PWRSAVE, PLL / LE / DAT / CLK are exchanged.

In FIG. 1, reference numeral 40 preferably denotes a first oscillator for providing an oscillation signal of 18.432-MHz, and 50 denotes a second oscillator for providing an oscillation signal of 32.768-Khz. Here, an input of an 18.432-MHz oscillation signal (MXTAL 1) and an output of an 18.432-MHz oscillation signal (MXTAL 2) are assumed between the microcomputer 20 and the first oscillator 40. ) Between the second oscillator 50 and the real-time clock oscillation input (RXTAL 1) of 32.768-Khz and the real-time clock oscillation output (RXTAL 2) of 32.768-Khz and the backup battery. Ground (BATVss) is designed.

60 denotes an EEPROM. The digital B channel encryption output (BDP4-OUT8), the A-law PCM data input function (SDIN), and the A-law PCM data output are provided between the microcomputer 20 and the EEPROM 60. Function (SDOUT) and A-law PCM clock output function (SCLK) are connected. In addition, 70 denotes a RAM provided to the work area of the microcomputer 20, and an active-low external data memory read strobe RD ′ and an active-low are interposed between the microcomputer 20 and the RAM 70. External data memory write strobe (WR '), CS1'-INT1 for providing emulating data for its RAM 70, multiplexed data and subaddress buses for external data and program memory access (P0.7) P0.0), lower address bytes (A7-A0) latched on the ALE from the P0 bus, fetches from the program memory 80, and higher during access to external data memory to which the MOVX @ DPTR command is applied. The address bytes (P2.7-P2.0) are designed to be exchanged. In addition, the microcomputer 20 and the program memory 80 are latched on the ALE from the multiplexed data and lower address buses P0.7 to P0.0 and P0 buses for external data and program memory access. Lower address bytes (A7-A0), fetches from program memory 80 and upper address bytes (P2.7-P2.0) during access to external data memory to which MOVX @ DPTR command is applied, external The active-low read strobe PSEN 'for the conventional program memory 80 is designed to be exchanged.

In FIG. 1, reference numeral 90 denotes a loud speaker connected to the high current drive analog audio output AO2 of the microcomputer 20, and 100 denotes a receiver for reproducing and outputting a voice signal on the called side. Reference numeral 110 denotes a transmitter for inputting a voice signal on the called side.

Reference numeral 120 denotes an LCD driving unit for driving the LCD panel unit 130 provided on the outer surface of the mobile phone corresponding to the control of the microcomputer 20, 140 is a power supply unit for generating the operating power of the corresponding mobile phone As shown, the power supply unit 140 is a battery is suitably employed in the case of a mobile phone. In addition, the power supply unit 140 is provided with a power key 140a for turning on / off the power of the corresponding cellular phone.

Therefore, a mobile phone having the above-described configuration usually has a frequency of use defined to have a bandwidth of approximately 4 MHz in the frequency range of 910 to 914 MHz, has a frequency channel of 100 KHz bandwidth of 40CH, and a two-level FSK is adopted as the modulation method. . In addition, 32 Kbps Adaptive Differential Pulse Code Modulation (ADPCM) is employed for encoding the audio signal, the data transmission rate is 72 Kbps, the access method is FDMA / TDD, and the channel assignment method is Dynamic Channel Allocation (DCA). The output is designed with specifications up to 10mW (100-200m radius) and no handoff / roaming.

FIG. 2 is a block diagram of a home base station apparatus for effectively operating the mobile phone shown in FIG. 1 at home.

In the figure, reference numeral 210 denotes a keypad portion provided on the outer surface of a corresponding base station control apparatus, and the keypad portion 210 typically has a 10-key for dialing a called number, a memory button, a shortcut button, and the like. Among the many mobile phones operated mainly by the base station apparatus, a call button for calling a specific mobile phone, a hold button for temporarily holding a call, a power lamp, a call lamp and a call lamp, etc. are provided. A handset equipped with a handcuff and a telephone line connection terminal for connection of a telephone line are provided.

Reference numeral 220 denotes a microcomputer that is responsible for setting up a call path and exchanging voice signals with a called subscriber terminal in response to an operation from the keypad unit 210 or a request from the cellular phone. Similar to the microcomputer 20 of the mobile phone 220, a dialer, a voice signal path controller, and an RF signal processing means for transmitting / receiving a voice signal are integrally designed with 'Am79C410A'. Integrated circuits are employed.

In addition, in FIG. 1, 230 denotes wireless transmission of a radio signal (i.e., a call signal / voice signal) to be relayed to the cellular phone side under the control of the microcomputer 220, or the antenna 230a of the antenna 230a. An RF unit for relaying a radio signal (call answering signal / voice signal) received from the cellular phone side to the microcomputer 220 side. According to the present invention, between the RF unit 230 and the RF signal processing means of the microcomputer 220 RSSI (Receive Signal Strength indicator) signal, CMOS level of 72KHz-digital reception data CT2RX, receiver and IF and RF circuit Active high strobe signal RXEN indicating CT2 receiving window for enabling the circuit, sample / hold control signal SHCTR to maintain the receiver as a DC level divider between receiving windows, and transmitter to IF and RF circuits. The active high strobe signal TXEN, which indicates the CT2 transmission window for bleeding, the phase outputs TXI, TXQ of the modulator, and the reference signals MREF, FREECH, PWRSAVE, PLL / LE / DAT / CLK of the modulator are exchanged.

In FIG. 1, reference numeral 240 preferably denotes a first oscillator for providing an oscillation signal of 18.432-MHz, and 250 denotes a second oscillator for providing an oscillation signal of 32.768-Khz. Here, the input of the 18.432-MHz oscillation signal (MXTAL 1) and the output of the 18.432-MHz oscillation signal (MXTAL 2) are assumed between the microcomputer 220 and the first oscillator 240, the microcomputer 220 ) Between the second oscillator 250 and the real-time clock oscillation input (RXTAL 1) of 32.768-Khz and the real-time clock oscillation output (RXTAL 2) of 32.768-Khz and the backup battery. Ground (BATVss) is designed.

260 denotes an EEPROM. The digital B channel encryption output (BDP4-OUT8), the A-law PCM data input function (SDIN), and the A-law PCM data are located between the microcomputer 220 and the EEPROM 260. Output function (SDOUT) and A-law PCM clock output function (SCLK) are connected. In addition, 270 denotes a RAM provided to the work area of the microcomputer 220, and an active-low external data memory read strobe RD ′ and an active-row are disposed between the microcomputer 220 and the RAM 270. External data memory write strobe (WR '), CS1'-INT1 for providing emulating data for its RAM 270, multiplexed data and subaddress buses for external data and program memory access (P0.7) P0.0), lower address bytes (A7-A0) latched on the ALE from the P0 bus, fetches from the program memory 280, and higher during access to external data memory to which the MOVX @ DPTR command is applied. The address bytes (P2.7-P2.0) are designed to be exchanged. In addition, the microcomputer 220 and the program memory 280 are latched on the ALE from the multiplexed data and lower address buses (P0.7 to P0.0) and the P0 bus for external data and program memory access. Lower address bytes (A7-A0), fetches from program memory 280, and upper address bytes (P2.7-P2.0) during access to external data memory to which MOVX @ DPTR command is applied, external Active-low read strobes PSEN 'for conventional program memory 280 are designed to be exchanged.

In FIG. 2, reference numeral 290 denotes a loudspeaker connected to the high-current driving analog audio output terminal AO2 of the microcomputer 220, and 300 and 310 designate a handset by forming a handset by mutual combination. A receiver for reproducing and outputting a voice signal of a voice signal and a talker for inputting a voice signal on the called side.

Reference numeral 320 denotes an extension microphone for extension calls, 33 denotes a switching element for turning on / off the function of the extension microphone 320 under the control of the microcomputer 220, and 340 denotes a microphone of the microcomputer 220. An LCD driver for driving the LCD panel 350 provided on the outer surface of the base station apparatus under control.

In addition, in FIG. 2, reference numeral 360 detects a ringing signal arriving through a telephone line (TIP / RING) extending to the switching system and returns the ring signal detection result (RING DET) to the microcomputer 220. 370 denotes a telephone line interface, 380 denotes a state of the handset constituted by the receiver 300 and the receiver 310 (i.e., a call waiting state; hook-on, call) A hook-switch for switching a medium state; hook-off, and 390 indicates a call path detection unit for detecting a call path setting state and notifying the microcomputer 220 based on the state of the hook-switch 380. Reference numeral 400 denotes a voice network for exchanging a voice signal between a corresponding base station apparatus and a called party subscriber terminal connected to a wired telephone line. Here, the muting of the voice signal is controlled by the voice mute control signal MUTE CTRL of the microcomputer 220 with respect to the voice network 400. In addition, 410 and 420 represent the AC / DC adapter and the rated power supply which comprise the power supply of the corresponding base station apparatus.

Accordingly, when the mobile phone illustrated in FIG. 1 is operated by a battery power applied from the power supply unit 140 and the call number is manipulated from the keypad unit 10, the microcomputer 20 controls the LCD driving unit 120. The manipulated call number is displayed on the LCD panel 130 and the RF unit 30 is controlled to transmit a pilot signal to an adjacent base station through the antenna 30a. When the microcomputer 20 is transmitted to the microcomputer 20 through the RF unit 30a and the RF unit 30, the microcomputer 20 transmits a call setup request to a base station having an optimal electric field strength. The setting of the call path is to be made, and when the setting of the call path is performed, the voice signal is exchanged as the output and input of the voice signal are made from the receiver 100 and the transmitter 110. do.

In the state in which the cellular phone illustrated in FIG. 1 is registered in the base station apparatus illustrated in FIG. 2, when an external ring signal arrives by the ring signal detector 360, the microcomputer 220 uses the loudspeaker 290. Ring the ring or transmit the ring signal to the RF unit (mobile phone terminal registered in the EEPROM 260 side) to ring the ring. When the hook switch 380 is turned off or a response occurs from the mobile phone terminal The microcomputer 220 may make a call by delivering a voice message of the receiver 300, the transmitter 310, or the mobile phone terminal to the telephone line through the voice network 400.

However, the mobile phone shown in FIG. 1 is shown in FIG. 2 in order to make it possible to use the mobile phone smoothly at home in consideration of the optimal call service in the cell area assumed relatively short from the base station. Although the home base station apparatus is provided, the mobile telephone apparatus shown in FIG. 1 and the home base station apparatus illustrated in FIG. 2 are economically available to subscribers of the cellular telephone as they are implemented in completely separate configurations even though they include similar components. It is a burden on the person.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described state of the art, and a mobile telephone having a base station function provided with a base station function is provided to give a base station function to the mobile phone to enable selective execution of the mobile phone function and the base station function under mode setting. The purpose is to provide.

In order to achieve the above object, according to a preferred embodiment of the present invention, in a mobile phone in which a voice signal is exchanged through an allocated call channel wirelessly connected to a base station apparatus, a terminal mode for the mobile phone is provided. And a keypad unit for setting a base station mode, a microcomputer controlling a call / call channel of a mobile phone corresponding to a terminal mode or a base station mode set by the keypad unit, and a microcomputer unit under the control of the microcomputer. An LCD driving unit and an LCD panel unit for displaying a setting procedure of a terminal mode / base station mode, a telephone line connection means for exchanging call and voice signals through a telephone line while the mobile phone is operated in a base station mode; In the terminal mode of the cellular phone, a device for applying the operating power of the cellular phone under the control of the microcomputer. Provided is a mobile phone having a base station function configured with an EEPROM in which at least one mobile phone terminal is registered in the base station mode of the mobile phone.

According to the present invention, the predetermined position of the cellular phone is provided with a connector holder to which the telephone line connector is connected when the base station mode is set. The telephone line connection means includes a ring signal detector for detecting a ring signal arriving through the telephone line, a telephone line interface for interfacing the telephone line, a telephone line detector for detecting a setting of a call path, and a voice signal. It is configured to include a voice network for the exchange of. Preferably, according to the present invention, the telephone line connection means is connected to the telephone line voltage applied through the telephone line in the base station mode of the mobile phone.

According to the present invention, the keypad unit includes a mode setting button for setting the terminal mode and the base station mode of the cellular phone and a selection button for selecting the terminal mode or the base station mode set by the mode selection button. It is composed.

According to the mobile phone having the base station function according to the present invention having the above-described configuration, when the mobile phone is set to the terminal mode by the mode setting button and the selection button of the keypad, the base station apparatus and the call channel are controlled by the RF unit under the control of the microcomputer. By setting the voice signal is exchanged. On the other hand, when the corresponding cellular phone is set to the base station mode, the telephone line is connected by the telephone line voltage provided through the telephone line while the connector of the telephone line is coupled with the connector holder installed at a predetermined position of the portable apparatus. The connection means is activated, and the audio path is detected for the cellular phone terminal (or talker / receiver) registered under the control of the microcomputer by detecting the call signal on the telephone line, and the audio signal is transmitted through the cellular phone in the base station mode. The call is made.

1 is a block diagram showing the configuration of a mobile phone according to a conventional example;

FIG. 2 is a block diagram showing an example of the configuration of a home base station for the cellular phone shown in FIG. 1;

3 is a block diagram showing the configuration of a mobile phone having a base station function according to a preferred embodiment of the present invention;

4 is a view showing the appearance of a mobile phone having a base station function according to a preferred embodiment of the present invention by way of example;

5 and 6 are exemplary diagrams for explaining switching between the base station mode and the terminal mode of the cellular phone shown in FIG.

* Description of the symbols for the main parts of the drawings *

10: keypad portion, 12: mode setting button,

14: select button, 20: microcomputer,

30: RF unit, 60: EEPROM,

90: loudspeaker, 120: LCD driver,

130: LCD panel unit, 460: telephone line,

470: connector, 480: connector holder,

500: ring signal detection unit, 510: telephone line interface,

520: a channel detection unit, 530: a voice network.

Hereinafter, with reference to the accompanying drawings, the present invention will be described in detail.

3 is a block diagram showing the configuration of a mobile telephone having a base station function according to the present invention. The mobile phone shown in FIG. 3 is generally configured to include components for realizing a home base station function in addition to the function of the mobile phone shown in FIG. That is, in the cellular phone having the base station function shown in FIG. 3, the keypad unit 10 has a mode setting button 12 for setting the mobile phone to the CT2 terminal mode or the base station mode as shown in FIG. A selection button 14 for selecting the CT2 terminal mode or the base station mode set by the setting button 12 is provided.

In addition, in the cellular phone having the base station function shown in FIG. 3, the microcomputer 20 determines whether the corresponding cellular phone is set to the CT2 terminal mode or the base station mode, and controls the RF unit 30 when the terminal mode is set. While the call setting request for the adjacent base station is transmitted through the antenna 30a to perform a well-known call path setting procedure, when the base station mode is set, it is received by the antenna 30a and received through the RF unit 30. In response to the request from the terminal registration function and the registered terminal, the call path setting function is executed.

In addition, the mobile phone having the base station function includes a first oscillator 40 and a second oscillator 50 for oscillating a signal applicable to the battery save function, and when the corresponding mobile phone is set to the base station mode, the base station of the mobile phone. Executing the CT2 terminal function and the base station function set by the EEPROM 60 where the cellular phone is registered to use the function, the RAM 70 as the work area of the microcomputer 20, and the mode setting button 12 A program ROM 80 including a program for registering the program includes a loudspeaker 90 connected to the high current driving analog audio output terminal AO2 of the microcomputer 20 and a sign language unit 100 for reproducing and outputting a voice signal of the called party. And a talker 110 for inputting a voice signal on the called side.

In addition, the mobile phone having a base station function includes an LCD driver 120 for driving the LCD panel 130 (see FIG. 4) provided on the outer surface of the mobile phone corresponding to the control of the microcomputer 20, for example, CT2. A power supply unit 140 for generating the operating power of the corresponding mobile phone in the terminal mode and a power key 140a for turning on / off the power path from the power supply unit 140 of the mobile phone are also provided.

In addition, the predetermined position of the mobile phone having a base station function according to the present invention is provided with a connector holder 480 to which the connector 470 of the telephone line 460 extending from the trunk line is coupled to perform the base station function. When the connector 470 of the telephone line 460 is coupled to the connector holder 480 of the cellular phone, the telephone line voltage applied from the telephone station is applied to the cellular phone side.

In addition, the mobile phone corresponding to the base station function has a ring signal detector 500 for detecting a ring signal applied through the TIP terminal and the RING terminal of the telephone line 460, and the TIP terminal of the telephone line 460. And a call line interface 510 connected to a RING terminal, a call path detection unit 520 for detecting a setting state of a call path, and a mobile phone having a corresponding base station function and a call line 460 connected to a wired telephone line 460. A voice network 530 for exchanging voice signals with the side subscriber station is provided.

Here, the ring signal detector 500, the telephone line interface 510 and the voice network 530 are operated by the telephone line voltage provided from the telephone station through the telephone line 460.

According to the mobile phone having a base station function according to the present invention having the above-described configuration, in order to operate the mobile phone as a CT2 terminal function, the connector 470 of the telephone line 460 is the connector holder 480 of the corresponding mobile phone. When the mode setting button 12 of FIG. 4 provided in the keypad unit 10 is not coupled to the microcomputer 20, the microcomputer 20 controls the LCD driving unit 120 on the LCD panel unit 130. The mode setting procedure 130a shown in FIG. 5A is displayed on the screen, and in response to the display, the position of the cursor 130b is controlled to use the corresponding mobile phone as the terminal as shown in FIG. 5B. When the terminal mode is selected by the button 14, the microcomputer 20 controls the mobile phone to operate in the terminal mode.

On the other hand, when the connector 470 of the telephone line 460 is connected to the connector holder 480 of the cellular phone and the mode selection button 12 is operated, the LCD panel 130 is shown in FIG. 6A. As shown in FIG. 6B, the mode setting procedure 130a is displayed, and the selection button 14 is controlled by controlling the position control of the cursor 130b to act as the home base station as shown in FIG. 6B. When the selection of the base station mode is made by the microcomputer 20, the microcomputer 20 acts as a home base station.

That is, when the corresponding mobile phone is set to the base station mode, the mobile phone terminal for using the mobile phone as a base station is registered under the control of the microcomputer 20 and stored in a predetermined area of the EEPROM 60. In this state, when an external call setup request arrives through the telephone line 460, a ring signal is detected by the ring signal detector 500 to apply a ring detection signal RING DET to the microcomputer 20. Accordingly, the microcomputer 20 controls the RF unit 30 while ringing at the loudspeaker 90 in response to the input of the ring detection signal RING DET, thereby controlling the arrival of a call signal to an adjacent mobile phone terminal. The ring will ring.

When a voice signal flows through the phone line interface 510, the call detector 520, and the voice network 530, the microcomputer 20 is applied to the microcomputer 20 through the AI1 line. The audio channel may be output through the receiver 100 or may be applied to the terminal through which the communication channel is established through the RF unit 30.

In addition, the voice signal input through the transmitter 110 is output on the AO1 line under the control of the microcomputer 20 and output to the telephone line 460 side through the voice network 530.

As described above, according to the mobile phone having a base station function according to the present invention, a base station apparatus for a plurality of mobile phones is designed by designing a base station function in the mobile phone so that the mobile phone is selectively operated between the terminal mode and the base station mode. Need to be prepared separately.

Claims (5)

A mobile telephone which is wirelessly connected to a base station apparatus and exchanges voice signals through an assigned call channel, A keypad unit for setting a terminal mode and a base station mode for the cellular phone; A microcomputer for controlling a call / call channel of a mobile phone corresponding to a terminal mode or a base station mode set by the keypad unit; An LCD driving unit and an LCD panel unit for displaying the setting procedure of the terminal mode / base station mode set by the keypad unit under the control of the microcomputer; Telephone line connection means for exchanging a call signal and a voice signal through a telephone line while the cellular phone is operated in a base station mode; A power supply unit which applies an operating power of a mobile phone corresponding to the control of the microcomputer in a terminal mode of the mobile phone, And a base station function comprising an EEPROM in which at least one mobile terminal is registered in the base station mode of the cellular phone. A mobile telephone having a base station function according to claim 1, wherein a predetermined position of said mobile telephone is provided with a connector holder to which a telephone line connector is connected when the base station mode is set. 3. The telephone line connection means according to claim 1 or 2, wherein the telephone line connection means comprises a ring signal detection unit for detecting a ring signal arriving through the telephone line, a telephone line interface for interfacing the telephone line, and setting of a call path. A mobile telephone having a base station function, comprising a call path detector for detecting and a voice network for exchanging voice signals. 4. A cellular phone with a base station function according to claim 3, wherein said telephone line connection means is connected to a telephone line voltage applied through said telephone line in the base station mode of said cellular phone. The apparatus of claim 1, wherein the keypad includes a mode setting button for setting a terminal mode and a base station mode of the cellular phone, and a selection button for selecting a terminal mode or a base station mode set by the mode selection button. Mobile phone with base station function, characterized in that.

Images